AAF -HermanNelson Classroom Self-Contained Unit Ventilator ...mcquayservice.com/bizlit/literature/lit_at_uv/IMOM/IM_789_AZ.pdf · Installation Manual IM 789 Group: Unit Ventilator

Installation Manual IM 789

Group: Unit Ventilator

Part Number: 106506230

Date: October 2006

AAF®-HermanNelson® Classroom Self-Contained Unit VentilatorModel AZS, AZQ, AZV, AZU, AZRMicroTech II™, Electromechanical Controls

©2006 McQuay International IM 789 (10-06)

Vertical Floor Self-Contained Air Conditioner –Models AZS, AZQ, AZV, AZU, and AZR

Improper installation can cause equipment damage, personal injury or death. Before beginninginstallation, please read this publication in its entirety.Develop a thorough understanding before starting the installation procedure.This manual is to be used as a guide. Each installation is unique, so only general topics are covered.The order in which topics are covered may not be those required for the actual installation.

IMPORTANT!

C

Page 2 of 68 / IM 789 Self-Contained Unit Ventilator

Table of Contents

Safety Information ............................................... 3Meeting Seismic Standards ............................................................. 3

Receiving, Handling, & Storage ............................... 4Important Information ..................................................................... 4Transportation Damage ................................................................... 4Equipment Storage .......................................................................... 4Lifting, Moving, and Stacking ........................................................ 4

Stacking Component Cartons ................................... 5Complete Installation Procedure Summary Checklist ................... 5

Typical Self-Contained Floor Unit, Wall Sleeve, LouverComponents ....................................................... 6

Step 1 – Wall Opening ProcedureWall Sleeve Opening Procedure ..................................................... 7Locating Exterior and Interior Wall Opening(Existing Building) ......................................................................... 7Cutting Exterior Wall Opening ...................................................... 8

Cutting Interior Wall Opening ..................................................... 8-9Louver and Grille Details ............................................................. 10

Step 2 – Installing LouverLouver Installation Considerations .............................................. 11Installing Louvers .................................................................... 11-12

Top Plan Views .............................................. 13-14No Recess ...................................................................................... 13Partial and Full Recess .................................................................. 14

Louver Installation Methods ............................... 15-17

Step 3 – Installing Wall SleeveWall Sleeve Details ....................................................................... 18Pre Wall Sleeve Installation Checklist ......................................... 19Wall Sleeve Details & Dimensions .............................................. 19Typical Wall Sleeve Applications ................................................ 20Unit Room Projection and Splitter Length Details ...................... 21Recessed and Full Projection Wall Sleeve ................................... 22Recessed Applications .................................................................. 23Sealing Wall Sleeve and Horizontal Air Splitters ........................ 23Sealing Wall Sleeve to Louver ..................................................... 24Full Projection Applications .................................................... 24-26Cross-Over Piping Considerations ............................................... 26

Step 4 – Wall Sleeve Electrical ConnectionsElectrical Connection Procedure ................................................. 27Wall Sleeve Electrical Stub-up Details ....................................... 28Wall Sleeve Junction Box Electrical Terminals .................... 29-30

Step 5 – Installing the Unit VentilatorPre Installation Checklist ............................................................. 31Remove Packaging and Inspect the Unit(s) ................................ 31Before Moving the Unit Up to Wall Opening Checklist ............ 32Position the Unit Ventilator ......................................................... 32Removing Unit from the Skid ..................................................... 32Before Sliding the Unit into Place ............................................... 33Installing Casters .......................................................................... 33

Step 6 – Making Piping ConnectionsWater Coil Connections ............................................................... 35Hot Water Coil Connections ........................................................ 36Steam Coil Connections .............................................................. 37

Valves and Piping (Typical) .............................. 38-42Hot Water End of Cycle Valve Data ........................................... 38Steam End of Cycle Valve Data .................................................. 38End of Cycle Valves & Piping Specifications (Typical) ............ 39Installation/Mounting End of Cycle Valve ................................. 39End of Cycle Valve Piping (Typical) .......................................... 40

Typical EOC Piping Arrangements ........................... 41

Hot Water Modulating Control Valve for MicroTech II ... 42Heating - Modulating Valve Piping (Typical) ............................ 43

Steam Modulating Control Valve for MicroTech II ........ 44Steam Modulating Valve Piping (Typical) ................................. 45

Step 7 – Unit Electrical Control ConnectionsModel AZ Electrical Data - Size 024 .......................................... 46Model AZ Electrical Data - Size 030-036 ................................... 47Model AZ Electrical Data - Size 040-044 ................................... 48Model AZ Electrical Data - Size 048-054 ................................... 49

MicroTech II Wiring Diagram (Typical) ..................... 50

MicroTech II Unit Mounted DDC Control Components 51-53

MicroTech II Remote Wall Mounted Sensor ........... 54-56

Electromechanical Control Components ............... 57-58Thermostat Control, HW or Steam Heating Wiring Diagram .... 57Remote Mounted Room Air Sensor Wiring Diagram ................ 58

Step 8 – Installing Wall Filler, Spacer,End Panel18" Wall Filler Section ................................................................ 59

12" Spacer Assembly ................................................................... 60End Panel Dimensions ................................................................. 61Installing End Panels ................................................................... 62

Step 9 – Installing VentiMatic ShutterInstalling VentiMatic Shutter ................................................. 63-64

Step 10 – Prepare for Start-upPrepare Unit Ventilator for Start-up ....................................... 64-65

Step 11 – Check, Test and Start ProcedureCheck, Test and Start Procedure ................................................. 65

Product Identifier (Data Plate Specific Information) ..... 66

Glossary of Related Terms ................................... 67

Index Alphabetical Listing .................................... 68

IM 789 Self-Contained Unit Ventilator / Page 3 of 68

Recognize safety information. When you see a safety symbol onthe unit or in these instructions, be alert to the potential for personalinjury. Understand the meanings of the words DANGER,WARNING, and CAUTION.

DANGER identifies the most serious hazards that will result indeath or severe personal injury.

WARNING means the hazards can result in death or severepersonal injury.

CAUTION identifies unsafe practices that can result in personalinjury or product and property damage.

Safety Information

Disconnect all electrical power before servicingunit to avoid injury or death due to electricalshock.

Hazardous Voltage!Disconnect all electric power including remote disconnectsbefore servicing. Failure to disconnect power before servicingcan cause severe personal injury or death.

Use copper conductors only. Unit terminals are not designedto accept other types of conductors. Failure to do so cancause damage to the equipment

DANGER!

WARNING!

CAUTION!

Installation and maintenance are to be performed only byqualified personnel who are familiar with and in compliancewith state, local and national codes and regulations, andexperienced with this type of equipment, Sharp edges andcoil surfaces are a potential injury hazards. Avoid contact withthem.

CAUTION!

During installation, testing, servicing and troubleshooting ofthis product, it may be necessary to work with live electricalcomponents. A qualified licensed electrician or other techniciantrained and experienced in live electrical components shouldperform these tasks. Failure to follow all electrical safetyprecautions when exposed to live electrical components canresult in death or severe injury.

WARNING!

Improper installation, adjustment, service, maintenance, or usecan cause, fire, electrical shock, or other conditions which can resultin personal injury or property damage. This product must be installedonly by personnel with the training, experience, skills, and appli-cable licensing that makes him/her “a qualified professional HVACRinstaller.”

Follow all applicable safety codes. Wear safety glasses and workgloves. Use a quenching cloth for brazing operations. Have a fireextinguisher available. Follow all warnings and cautions in theseinstructions and attached to the unit. Consult applicable local build-ing codes and National Electrical Codes (NEC) for specialrequirements.

To meet IBC Seismic standards, the self-contained unit ventilatormust be secured to the floor, and should only be done after complet-ing all procedures described in Step 5, on pages 32 through 34.

When the unit is in the correct location, remove the optionalcasters from the right and left end unit compartments, and retain forlater use. The bottom plate cutouts, removed earlier to accomodatethe caster wheels, should be replaced.Using a 1/4" masonry bit, drillthrough the unit bottom plate and into the floor in the areas indicatedin the figure at right (circled). Determine the location of the holesbased on clearance, and the existence of the unit bottom plate, and asclose to the front edge of the unit as possible. Vacuum the concretedust that remains, so it is not drawn into the unit components uponstart up.

Using a power drill with a 5/16" hex socket bit, secure the right andleft ends of the unit with two (2) (contractor supplied)1/4" dia. x 2" x 5/16" hex washer head masonry screws (or equiva-lent). Tighten the screws down until the unit is secure to the floor,without distorting the unit bottom plate.

Meeting Seismic Standards

1/4"dia. x 2" x 5/16"Hex Washer HeadConcrete Screw – 2

Right End CompressorCompartment

Right End -OptionalCaster

Left End Compartment -Area for Securing Unit to Floor

Right End Compartment -Area for Securing Unit to Floor


Equipment StorageIf equipment is stored for any length of time before installation, it

should remain in its shipping packaging in a clean, dry, climatecontrolled area. For extended storage times, rotate indoor fan motorand outdoor fan /motor assemblies periodically to prevent flatteningof the bearing.

Lifting, Moving, and StackingA forklift with 72" tines, or other lifting device is needed to move

these products (Figure 1).Move the louver, wall sleeve, or unit to the location at which it is

to be installed before uncrating. Check tagging on carton to confirmthat the item is correct for the location. The carton for the unit isimprinted with the AAF®-HermanNelson® trademark which is the"front" or room side of the unit. The end of the unit carton marked"Truck From This End" should be on the right-hand side when facingthe front of the carton.

Forklift-type vehicles may be used to unload and move thecartons. When using a forklift, it is important that the productsremain banded to its skid and be lifted only from the end designatedon the carton (Figure 5). Move only one unit at a time. Do not dropunit.

Use 72" length forklift tines. Short tines will damage the unitbottom. Improper handling can damage internal components

CAUTION!

4’6’

Figure 1 – Forklift Lifting Requirements

Important InformationMade in the U.S.A., pride and workmanship go into every AAF®-

HermanNelson® Model AZ self-contained unit ventilator to provideour customers with quality products. Products should be installedand serviced only by qualified installers and service techniciansfamiliar with and in compliance with state, local and national codesand regulations, and experienced with this type of equipment. Thisinstallation manual is designed to help with the installation andstart-up.

Transportation DamageItems supplied by McQuay may include louvers, wall sleeve,

Model AZ unit and accessories. Each item has been carefullyinspected and securely packed in a McQuay-approved carton at thefactory. In addition, each Model AZ unit has been operated at thefactory to verify proper performance. The carrier checked the itemswhen the shipment was loaded and assumed responsibility fordamage or loss upon acceptance of the shipment.

The purchaser is responsible for filing the necessary claims withthe carrier. Check each carton upon arrival for external damage orshortages. Note any damage or shortage and any damage on allcopies of the freight bill. If damage or shortages are found, theconsignee should:

1) Note any visible damage to the shipment or container on allcopies of the delivery receipt and have it signed by the carrier’sagent. Failure to adequately describe such external evidence ofa loss or damage may result in the carrier refusing to honor aclaim.

2) Notify carrier promptly with a written request for an inspection.3) In case of concealed loss or damage, or damage and/or loss that

does not become apparent until the product has been unpacked,notify the carrier as soon as possible, preferably within five (5)days and no later than 15 days.

4) File the claim within the six (6) month statute of limitations ofthe carrier with the following supporting documents:

a) Original Bill of Lading, certified copy, or indemnity bond.b) Original paid freight bill or indemnity in lieu thereof.c) Original invoice, or a certified copy thereof, showing trade and

other discounts or reductions.d) Copy of the inspection report issued by carrier’s representative

at the time damage is reported to the carrier.

The carrier is responsible for making prompt inspection of damageand for providing a thorough investigation of each claim. McQuaywill not accept claims for transportation damage.

To help avoid concealed damage:1) Lay the louvers on their side for shipping, handling and storage.

Do not stack louver more than 10 high (Figure 2).2) Do not stack wall sleeves more than 2 high (Figure 3).3) Model AZ unit ventilators must be shipped, handled and stored

right-side up. Do not stack units more than two (2) high(Figure 4).

Receiving, Handling, and Storage

NOTICE

McQuay louvers, wall sleeves, Model AZ units and accessoriesare carefully packed and thoroughly inspected before leavingthe factory. The carrier assumed responsibility for damage orloss upon acceptance of the shipment.Claims for loss ordamage sustained in transit must be made upon the carrier asfollows:VISIBLE LOSS OR DAMAGEAny external evidence of loss or damage must be noted on thefreight bill or carrier’s receipt and signed by the carrier’sagent. Failure to adequately describe such external evidenceof loss or damage may result in the carrier’s refusing to honora damage claim. The form required to file a claim will besupplied by the carrier.CONCEALED LOSS OR DAMAGEFor concealed loss or damage (damage and/or loss that doesnot become apparent until the product has been unpacked),make a written request for inspection by the carrier’s agentwithin fifteen (15) days of the delivery date. File a claim withthe carrier since such damage is the carrier’s responsibility.


Stacking

Correct

Incorrect

10 high

Louver CartonsFigure 2 – Stack Louvers Maximum 10 High as Shown

Unit CartonsFigure 4 - Stack Units Maximum 2 High as Shown

Wall Sleeve CartonsFigure 3 – Stack Wall Sleeve Maximum 2 High as Shown

Figure 5 - Unit Package Dimensions

By McQuayMADE IN USA

Unit Ventilator

TRUCK FROM THIS END

CAUTION

To prevent unit damage, 72”

forklift tines must be used to

lift or move this crate

CAUTION

Damage to the unit can result

if crates are stacked more

than (2) high

4’

Plastic packaging is a suffocation hazard.

Dispose of properly. Keep away from

children.W A R N I N G

Heavy 3-ply cardboard.

Recycle to help the environment.

N O T I C E

UP

HANDLE WITH CAREMANEJE CON CUIDADOMANIEZ AVEC PRUDENCE

FRAGILE6’

CorrugatedRecycles

Instruction Sheet Included

Se Incluye Hoya De Instrucciones

Feuille D Instruction Incluse

UP

HANDLE WITH CARE

MANEJE CON CUIDADO

MANIEZ AVEC PRUDENCEFRAG

ILE

DAMAGEIMPORTANTThis merchandise was carefully packed and thoroughly inspected before

leaving our factory. Responsibility for safe delivery was assumed by the

carrier upon acceptance of the shipment. Claims for loss or damage sustained

in transit must be made to the carrier as follows:

VISIBLE LOSS OR DAMAGE

Any external sign of loss or damage must be noted on the freight bill or express

receipt, and signed by the carrier’s agent. Failure to adequately describe such

external evidence of loss or damage may result in the carrier refusing to honor

a damage claim. The carrier will supply the form required to file such a claim.

CONCEALED LOSS OR DAMAGE

Concealed loss or damage means loss or damage which does not become

apparent until the merchandise has been unpacked. The contents may be

damaged in transit due to rough handling even though the carton may not

show external damages. Such damage is the carriers responsibility.

When the damage is discovered upon unpacking, make a written request

for inspection by the carrier agent within fifteen days of the delivery date,

and file a claim with the carrier. C

B

A NOTE: All dimensions are approximate only and are subject to changewithout notice. Refer to approved submittal prints for rough-indetails and construction purposes and for recommended wallopening size.

Model Shipping Loading Truckload QuantityAZ "A" "B" "C" Weight (L x W x H) of Identical Units

024, 030 107" 31" 39" 885 lbs. 5' x 3' x 2' 30

036, 040 107" 31" 39" 975 lbs. 5' x 3' x 2' 30

044, 048, 119" 31" 39" 1075 lbs. 4' x 3' x 2' 24054

Table 1 - Shipping Carton Dimensions & Weights

Complete Installation Procedure Summary� Read this manual in its entirety and understand the

installation procedures

� Wall opening cut

� Lintel(s) in place to support masonry wall over opening

� Electrical and control wiring roughed in

� Rough opening envelope smooth and sealed

� Position of louver marked for mounting to wall opening

� Position of wall sleeve marked where it extends and atpoints where mounts to wall and floor

� Splitters fabricated

� Metal flashing in place or sealed sloped mortar bed fordrainage from wall sleeve "D" seal channel to bottom oflouver

� Louver installed and sealed at bird screen toward wallsleeve

� Splitter(s) enclosures installed and sealed to louver

� Wall sleeve installed and sealed air and water tight

� Splitters attached to wall sleeve and sealed

� Electrical run and control wiring connections made towall sleeve junction box

� Interior wall finished

� Shut-off valves installed below floor grade for water orsteam

� Unit Installed

2 high

2 high

Correct

Incorrect

CorrectIncorrect


Carefully arrange the location and installation of each model AZunit to provide convenient service access for maintenance and, ifnecessary, removal of the unit. The installation consists of four basicelements in the following order:

1. Louver2. Galvanized Wall Sleeve3. Horizontal Air Splitters by others (if required)4. AZ Self-contained Unit Ventilator

The louver brings in outdoor air for the condenser fan section andventilation air to the classroom while providing a path for heatedcondenser air to exit.

The Wall Sleeve secures the unit, provides a watertight and airtight seal to the building and brings in electrical and control wiring

(if required). It contains the unit main power disconnect switchwhich is located in the wall sleeve junction box. All field electricalconnections are made inside this box.

Horizontal Air Splitters provide proper air paths and minimize airrecirculation.

The AZ self-contained unit ventilator provides comfort coolingand heating for the space. The Model AZ unit is designed to beinstalled into or up against an inside wall. The louver, air splitters (ifrequired) and wall sleeve are installed before the AZ unit is installed.

On many jobs, the louver and wall sleeve are shipped ahead of theunit itself. Installation instructions for these components are shippedwith the individual components included in this publication.

Figure 6 - Typical Frame and Brick Construction with Partial Recess��Outside Air

Condenser Discharge Air

Condenser Supply Air

Textured Charcoal Bronze Unit Projection Top(Except Fully Recessed Wall Sleeve)

Conduit (by others)

Wall Sleeve Junction Box

Galvanized Condenser (Outdoor) Section

Textured, Scuff Resistant, Charcoal Bronze,Environmentally Friendly Thermosetting UrethanePowder Paint Top

4. AZ Self-Contained Unit Ventilator

2. Galvanized Wall Sleeve

1. LouverMust be sealed watertight at top and both endsBottom Flange

Weep Holes

Louver Blade

Louver–Bird Screen

Drain Holes inSplitters (by others)

Seal Horizontal AirSplitters to Buildingat Both Ends

Optional LouverFlange

3. Horizontal Air Splitters(Field Made to Job Conditions byOthers) Pitch Down Toward Louver

Sealed Cement Mortar, Pitched Away from UnitToward Louver

Wall Sleeve Threaded Studs for Fasteningto Unit (Ships on Wall Sleeve)

Caster onOutdoor Section

Caster Kit forIndoor Section (Optional)

6" End Panel(Optional)

Internal Column forWall Bracing andAnchoring (by others)

Typical Self-Contained Floor Unit, Wall Sleeve, Louver Components


Figure 9 – Partial Recess, Frame and Brick Construction

Figure 7 – No Recess (Full Projection), Thin Wall Construction

Figure 8 – Full Recess, Thick Wall Construction

Transfer interiorrough-in openinglocation to exteriorwall surface

Transfer interior rough-inopening location to exteriorwall surface

Wall Sleeve

Wall SleeveNon-recessed WallSleeve MountingFlanges (RemoveFlanges to MarkInterior Wall Surface)

Existing Wall

Mark InteriorWall Surface1/4" Largerthan WallSleeveRecessDimension

Top View - Interior

Rough-in OpeningTransferred toExterior Wall

Top View - Interior

Locating Wall Opening (Existing Building)Step 1– Wall Opening ProcedureAn opening in the outside wall is required to accommodate the

wall sleeve and louver. The wall opening must be of sufficient sizeto allow proper fit of the louver and will depend on the type of wall.National and local codes for building construction must be followedand may supercede the suggested methods in this manual.

NOTICE

Wall and floor must be at 90o to one another. If not, the floormust be leveled (90o) to wall.

The first step in the installation is to carefully locate the area ofinterior and exterior wall to be removed. Determine the appropriatelocation on the interior wall where the unit ventilator is to beinstalled. Using the rear edge of the wall sleeve as a guide, mark theinterior wall surface for the rough-in wall sleeve opening 1/4" largerat each end than the wall sleeve recess dimension, and 1/4" higher(see table 2). In all cases, the bottom of the outdoor louver openingmust be at the same height as the floor line.

For non-recessed installations, (full projection), mark the positionof the wall sleeve on the interior wall surface with the wall mountflanges removed to help determine the location of the outdoor wallsurface rough opening.

Transfer the interior wall opening dimensions to the exterior wallsurface, being certain the opening is 1/4" larger at each end than thewall sleeve recess dimension, and 1/4" higher.

Mark InteriorWall Surface1/4" Largerthan WallSleeveRecessDimension

Unit ventilators use fresh air to condition the interior space.Obstructions near the louver wall opening must be removedto allow free flow of entering and discharge air. Building andvehicle exhaust, etc., near the louver intake must be identifiedand eliminated.

CAUTION!

Transfer interiorrough-in openinglocation to exteriorwall surface

Rough-in OpeningTransferred toExterior Wall

Step 1 – Wall Opening Procedure


Read louver and wall sleeve installation sections beforeproceeding (pages 9 - 26). Improper installation can result inproperty damage.

Cutting Interior Wall OpeningNext, the interior wall is cut as shown in Figure 12. If any portion

of the wall sleeve is to be recessed into the wall, the opening must belarge enough to accommodate the wall sleeve (see Table 3). In allcases, the bottom of the wall opening must be at the same height asthe floor line. Seal the floor of the wall opening to permit water todrain under the louver and away from the building interior. If thebuilding is a panel wall, the sleeve will be nonrecessed (fullprojection) and all of the unit will remain in the room.

Figure 12 - The interior wall opening is cut.

Unit Width HeightSize IN MM IN MM024

841⁄2 2140 281⁄4 715030036

961⁄2 2444 281⁄4 715040044048 1081⁄2 2747 281⁄4 715054

Cutting Exterior Wall OpeningThe wall opening must be of sufficient size to allow proper, yet

snug, fit of the louver and will depend on the type of wall. If the louveris to be installed in a masonry wall, install a lintel to support the wallabove the wall sleeve and louver. Install a sleeve to prevent moisturefrom seeping into the wall interior. Refer to approved submittalprints for recommended rough wall opening size.

The following is a typical procedure for installing in existingmasonry walls. Follow local codes and safety procedures.

If the Model AZ unit is to be installed in an existing classroom, anopening must be cut in the outside wall to accommodate the wallsleeve and louver. This is accomplished as follows: First, the outsideof the masonry wall is cut with a carborundum or other suitable bladeas shown in Figure 10. This opening should be 1/2" larger overallthan the size of the louver supplied with the unit (see Figure 11 &Table 2).

Figure 10 - Cutting the outside wall rough opening slightlylarger than the size of the louver.

Table 2 - Recommended Rough-in Dimensions for Louverswith or without Flanges (Exterior Wall)

Figure 11 - Rough-in Dimensions of Exterior Wall for Louvers

281/4" (715mm)

See Table 2for Width

Exterior Wall

Interior Wall

CAUTION!

NOTE: See louver installation section. Dimensions areapproximate and are dictated by job site conditions.

Horizontal splitters (by others) must be installed wheneverthere is space between the wall sleeve and the louver.Seal the ends of the wall opening. Pitch splitters toward thelouver for water drainage (see sealing wall sleeve andhorizontal splitters, pages 23 & 25).

CAUTION!



The interior wall is then knocked out in the area cut for the wallsleeve as shown in Figure 13.

If the wall consists of concrete block with brick (or other) veneerand the louver opening is smaller than the opening of the wall sleeve(which is to be recessed), be careful to knock out only the veneer thatis necessary.

After the opening is finished (Figure 14), a lintel must be installedabove the opening in masonry walls to support the remaining blockand brick (Figure 15). The wall must contain a solid surface or aninternal column at each end for bracing and anchoring the wall sleeveand louver (by others).

New BuildingsIn new construction, if any portion of the wall sleeve is to be

recessed into the wall, the opening must be large enough to accom-modate the wall sleeve (see Table 3). For smaller wall thickness, thewall sleeve will be nonrecessed (full projection) and all of the unitwill project into the room. In all cases, the bottom of the wall openingmust be at the same height as the floor line. A lintel must be installedabove the opening in masonry walls to support the block and brick.The wall must contain a solid surface or an internal column at eachend for bracing and anchoring the wall sleeve and louver (by others).

The wall opening must be sealed and made watertight. Seethe louver, splitter and wall sleeve installation sections

Shut-off valves for hot water and steam must be flush with thefloor to allow unit installation and removal (see pipingarrangements, page 41).

Figure 14 - A Lintel must be installed above the opening tosupport the remaining block and brick.

Wall Sleeve Sleeve RecommendedUnit Size w/Flange (Recessed) Rough-in Wall Opening

Length Length Length Height024 86" 84" 841⁄2" 281⁄2"030 (2184mm) (2145mm) (2146mm) (724mm)036 98" 96" 961⁄2" 281⁄2"040 (2489mm) (2489mm) (2451mm) (724mm)

044048 110" 108" 1081⁄2" 281⁄2"

054 (2794mm) (2755mm) (2756mm) (724mm)

Figure 13 - The interior wall is knocked out in the area cut forthe wall sleeve.

Top, bottom and sides of wallenvelope made smoothand waterproof

Figure 15 - Lintels installed

Table 3 - Recommended Rough-in Wall Opening for WallSleeve

Lintels installed above the openingto support block and brick

281/2" (724mm)Exterior Wall

Interior

CAUTION!

CAUTION!


Internal column at eachend for bracing andanchoring(by others)


Louver drain lip

Flange - Do not caulkbehind bottom edge offlange which willprevent water fromdraining.

CAUTION!Locate Drain Lip at bottom of vertical louver to allow properdrainage. Bird screen should always be on side toward unit.

Figure 20 – Vertical Louver with Flange.

Bird ScreenOn Side Toward Unit

Louver with weep holes

Figure 19 – Vertical Blade Louver, Without Flange

Bottom

CondenserDischargeAir

Condenser Inlet Air

9"(229mm)

12"(305mm)

Figure 18 – Vertical Blade Louver, Without Flange

Outside View

NOTE: See CAUTION at right for louver blade orientationand drainage

Inside View

Louver Details

Figure 16 – Typical Wall Louver and Grille

Splitter Lines Up WithWall Sleeve Splitter

Bottom Flange

Optional FactoryMounted Exterior Grille

Mechanical Fasteners(Number Required VariesWith Size of Louver)

Drain Notch At Bottom

Louver Blade

Optional Flanges

Information Labels

FrameFactory MountedBird Screen

Bird ScreenFasteners

Detail of Notches (Drain Holes)

+ +++

+

+ +

+ ++ +

+

++

Optional Flange

7⁄8" (22.2 mm)

14" (356 mm) ±1⁄8" (3.2 mm)

11⁄4" (31.8 mm)

"W " (See Table 4)

Figure 17 – Grille Detail

28"(711 mm)

21⁄2" (63.5 mm)

LouverUnit Size

Size (H X W)MM

024 or 030 28" X 84" 711 x 2134

036, 040 28" X 96" 711 x 2438

044, 048 or 054 28" X 108" 711 x 2743

Table 4 – Wall Louver Dimensions

NOTE: All dimensions are approximate and subject to changewithout notice. Refer to approved submittal prints for rough-indetails and construction purposes and for recommended wallopening size.

NOTE: Please refer to “Transportation Damage” on page 4 forinformation on receiving, inspection, and filing claims for damageor loss with the carrier, and handling items supplied by McQuay.

Step 2 – Installing Louver

CondenserDischargeAir

Condenser Inlet Air


4. Check to see if the horizontal divider on the louver is thesame height as the top horizontal splitter rail of the wall sleeve.The louver frame must be permanently mounted in the wall.

5. Before installing the louver in the opening, place a heavy beadof caulk along the top and two sides of the frame that come incontact with the walls of the opening. Use a flexible, water-proof caulk such as silicone.

6. Once the louver has been placed in the opening, furthermechanical fastening may be desired or required. Fasten in amanner appropriate to the installation (see pages 15-17 fortypical louver installation methods). Care must be taken iffasteners are to be placed in the frame. If this is necessary,remove the louver by removing the screws that hold it in place.Drill holes in the desired locations and fasten with flat headscrews. Be sure these screws do not interfere with the reinstal-lation. Shims must be placed between the louver and the wallso it won't be distorted. After the louver has been properlypositioned, secure with fasteners.

In masonry wall applications, the louver may be permanentlymounted by placing mortar around the top and sides in order toprevent it from being removed. Mortar keys may be attached to thelouver, if necessary.

Installing Louvers

Typical Installation MethodsIf the outside opening has not yet been made, see figures 23

through 26 for the recommended locations and the job-specific plansfor the exact location. Follow national and local codes.

Wall OpeningCut the wall opening so that it is slightly larger than the louver

being installed (see Table 2, page 8). For dimensions, see Table 4, page 10. If the opening is already

there, measure to be sure there is a minimum of 3/8" (9mm) clearancearound all sides. For masonry installations, follow national and localcodes and install a lintel above all louvers.

Outside Air PlenumIn thick wall applications, the portion of the wall between the

louver and the unit is the outside air plenum. Line this plenum areawith 3/8" (9 mm) sealed cement mortar or other suitable material. Insome applications, the job specifications require a metal sleeveconnection between the louver and the unit. If using such a sleeve,properly caulk it for a weather tight seal to help prevent moisturefrom seeping into the wall.

Sealing is critical in preventing freeze-ups, cold drafts, airinfiltration, and to prevent moisture from entering the wall orroom. Be sure the wall is smooth, square, and provides asuitable mating surface.

Louver Installation ConsiderationsThe standard louver is an aluminum, vertical, divided blade design

complete with bird screen. This louver is also available with flangesand/or with a heavy-duty exterior lattice grille.

1. Figure 18 & 19 shows a detail of a typical louver. Beforeinstallation, carefully examine the louver and note the loca-tion of the bird screen and the notches (drain holes). Thelouver must be installed with the small opening at the top,notches at the bottom and the bird screen toward the room. Ifthe louver is to be installed in a masonry wall, there must alsobe a lintel to support the existing wall above the louver

2. Measure the opening to be sure there is adequate clearance forthe louver around the sides. Observe the opening in relation tothe wall sleeve and unit. For proper unit operation, the louvermust be centered left to right and top to bottom to the wallsleeve. If the louver is of such a dimension that it extendsabove, below, or beyond the wall sleeve, then these areas mustbe blocked off airtight (Figure 21).

3. If the wall sleeve does not extend into the wall far enough tomeet the louver, field fabricated splitter(s) must be provided.The splitter(s) need to extend far enough to engage the louverin order to form a proper seal (see splitter length detailsbeginning on page 21.

Shaded area of louver mustbe blocked off & made air-and watertight, by install-ing contractor.

Exaggerated oversizelouver or wall opening.

Unit WallSleeve

Figure 21 – Oversize Wall Opening

��Caulk top and twosides of the frame

that come in contactwith the walls of the

opening

Field fabricatedsplitters engage the

louver to form a properseal, and seal at ends

where they come incontact with the wall

opening

Seal

Seal

Seals

WallSleeve Unit

Figure 22 – Typical Field Fabricated Splitters

CAUTION!

See page 25 for detail of attaching splitters to wall sleeve.

CAUTION!See important information on bottom splitter seal, and drainagefrom condenser section drain pan (figures 49 & 50).

Louvers by AAF®-HermanNelson® provide proper airflow.Proper unit performance has not been verified with louvers byothers.

CAUTION!



Personal injury hazard. Avoid contact with sharp edges.

Before setting the louver, be sure the drain lip (vertical louver) isat the bottom, and the bird screen is toward the unit (see Figures 16through 20). Place a heavy bead of caulk along the top and the twovertical sides of the louver, leaving the bottom uncaulked so that ifmoisture gets into the area between the louver and the unit, it candrain to the outside, unrestricted.

Louver With FlangesPlace an additional bead of caulk on the inside of the top and side

flanges that come in contact with the building facade. Do not caulkthe bottom flange. Place the louver in the opening and push it tightagainst the building. Fasten it to the exterior of the building usingfasteners (by others) appropriate to the installation. Seal the top andsides with a waterproof caulk to make it weather-tight. Do not caulkthe bottom of the louver; doing so will trap unwanted moisturebehind the flange.

Louver Without Flanges Place the louver in the opening so that it is recessed a minimum

1/16" (2mm) beyond the building facade or as directed in thearchitectural plans (see Figure 24) If specified in the plans, secure thelouver in the wall using mechanical fasteners (supplied by others)appropriate to the installation. With the louver solidly in place, runa bead of caulk around the perimeter of the louver to seal it weather-tight. Do not plug the bottom weep holes or the drip line of the louver.This will restrict the flow of unwanted moisture to the outside.

If flashing was used instead of the sloping mortar base, caulk theflashing where it contacts the “D” seal of the wall sleeve, the sidesof the wall, etc. (see Figure 24). This helps prevent moisture andoutside air from getting under the flashing and into the room.

CAUTION!

Caulk and Sealunderneathflashing(By Others)

Flashing(ByOthers)

Figure 24 - Typical Louver Installation with Sloped Flashing

Unit

Louver

“D” SealWall SleeveCross Channel

No Caulkbetweenflashing andlouver

Recess Louver aMinimum of 1/16"Beyond theBuilding Facade ifLouver Does NotHave Flanges

Sloping, Sealed Cement Mortar BaseBefore setting the louver, construct a sloping, sealed cement

mortar base to drain unwanted moisture to the outside, (Figure 23).Be sure the mortar base tapers toward the louver and away from thewall sleeve. The mortar at the wall sleeve also acts as a drain forexcess moisture from the outside to drain back outside, thus it mustextend so it meets the “D” seal flange of the wall sleeve. Temporarilyslide the wall sleeve into place to mark this meeting point on the floor(see Step 3 on page 23). The mortar should be the same height as the“D” seal flange. Be sure the sealed cement mortar base is smooth andflush along the wall sleeve “D” seal flange. This is critical inpreventing water leaks and air leaks under the unit.

Sloped FlashingIf it is not possible to construct a sloping mortar base, then field-

supplied flashing is required that is pitched for water drainage(Figure 24). The flashing should terminate flush with the exterior ofthe building. The flashing should extend so it is under the wall sleeveand meets the “D” seal flange of the wall sleeve. Place a bead of caulkunder the flashing to prevent moisture from wicking back to the unit.Do not caulk the joint between the louver and the flashing. This jointis designed to let unwanted moisture escape.

SealedCementMortar;Pitch AwayFrom Unit

Unit

Louver

No Caulk

Figure 23 - Typical Louver Installation with Sloping SealedCement Mortar Base (Splitters not shown)

No Caulk, anddo not plugwith mortar

“D” Seal Wall SleeveCross Channel

Leave Gap forDrainage fromCondenser.Do Not Fillwith Mortar

A space must exist between the bottom back edge of the wallsleeve and the sloping sealed cement mortar base to allowmoisture to drain away from the condenser section. Do not fillthis space with mortar (Figure 23).

CAUTION!



LC Unit

UNIT Unit “A” Louver “L”SIZE IN MM IN MM024

86 2184 84 2134030036

98 2489 96 2438040044048 110 2794 108 2743054

Figure 25 - Panel Wall Application With Flush Louver

Horiz. Splitters By Others (See CAUTION)

MasonryWall

Thickness18"

(457 mm)Max.

Top Plan Views – No Recess (Full Projection)

Figure 26 - Masonary Wall Application With Flush Louver

Table 5 - Unit & Louver Dimensions

“A” is unit length without end panels.

Louver

L

1"

28"(711 mm)

Panel WallThickness

A

Wall Sleeve Flanges

End Panel

LC Unit

LC Louver1"

(No Unit Recess)

The bottom of the louver must be installed flush with the bottom of the unit for proper air inlet/outlet orientation and to permit water to drain under the louver from the building exterior.Louver dimensions are ±1⁄16" (1.6 mm) except as noted.Intake and discharge must not be restricted. Trees, shrubs, etc., must be a minimum of 30" (762mm) away from intake.Louver must be blanked off airtight (by others) if it extends beyond the confines of the wall sleeve.Horizontal splitters (by others) must be installed whenever there is any space between the wallsleeve and the louver. Seal the ends of the wall opening. Locate splitters between condenserdischarge and condenser inlet, and between condenser air inlet and outdoor air inlet. Pitch thesplitters toward the louver for water drainage.Louvers by AAF-HermanNelson provide proper air flow. Proper unit performance has not beenverified with louvers by others.Grille must be flush with louver to provide proper air flow.

28"(711 mm)

A

Wall Sleeve Flanges

End Panel

L

LC Louver

Louver

1"1"

SealsSeals

(No Unit Recess)

CAUTION!



C

Max. of 2" (51 mm) Louver Recess from Face of Brick

Wall Sleeve

Figure 28 - Masonry Wall Application With Recessed Louver

CAUTION!

Figure 27 - Masonry Wall Application With Flush Louver

B

Top Plan Views – Partial or Full Recess

Horiz. Splitters By Others (See CAUTION page 13)

MasonryWall

Thickness18"

(457 mm)Max.

28"(711 mm)

A

End Panel

L

LC Louver

Louver

1"1"

SealsSeals

LC Unit

(Partial or Full Unit Recess)

ApplicationB C

IN MM IN MMFull Recess 165⁄8 422 113⁄8 289

Partial 195⁄8 498 83⁄8 213Recess 217⁄8 556 61⁄8 156

No Recess 28 711 0 0

Table 6 - Room Projection/End Panel Depth

“B” is room projection of unit.“C” is the amount the unit is recessed into the wall.

(Partial or Full Unit Recess)

C

Wall Sleeve

B

Horiz. Splitters By Others (See CAUTION page 13)

MasonryWall

Thickness18"

(457 mm)Max.

28"(711 mm)

A

End Panel

L

LC Louver

Louver

1"1"

SealsSeals

LC Unit



Examples 29 through 37 show various methods of installation.Select the appropriate method.

The following is a brief description of several popular methods ofinstallation. Many variations are possible, depending on wall thick-ness, opening size, method of fastening, etc.

Louvers Without FlangesFriction Fit InstallationFigure 29. This is a friction fit of the louver where the wall opening

is made just large enough for the louver to be held inplace by the friction between the wall and the louver.This will require each wall opening be “custom cut” tothe intake size, which can be done only after the intakeis on site for actual measurements. Recommended wallopenings provided in this manual do not apply for thismethod of installation.

Appropriate fasteners must be used to prevent removal byunauthorized personnel.

Friction Fit Using Shims InstallationFigure 30. In cases where the opening is too large and the louver fits

too loosely, friction fit may be obtained by the use ofshims to help hold the louver in place.

Fastens To Wall Sleeve InstallationFigure 31. It may be desired to mount the louver to the wall sleeve

so as to allow demounting the louver from the buildingexterior.

The louver may be fastened to the wall sleeve using appropriatefasteners on each corner of the wall sleeve where it butts up againstthe louver. The louver must be at least as long as the wall sleeve tobe secured to the sleeve in this fashion. No holes are provided in thelouver or in the wall sleeve for this type of mounting; the holes mustbe drilled in the field. Mounting hardware must also be provided bythe installer. The wall sleeve must be properly secured to the wallstructure.

INSTALL SO THAT THE EMBOSSMENTS ARE AT THEBOTTOM OF THE LOUVER AND THE BIRD SCREEN IS ONTHE UNIT (ROOM) SIDE.If the wall intake louver extends above, below, or beyond theends of the wall sleeve, it must be blanked off airtight in theseareas only (Figure 19).THE WALL OPENING SHOULD BE OF SUFFICIENT SIZETO ALLOW PROPER, YET SNUG, FIT OF THE LOUVER,AND WILL DEPEND ON THE TYPE OF INSTALLATIONREFER TO APPROVED SUBMITTAL PRINTS FORRECOMMENDED WALL OPENING SIZE.If the louver is to be installed in a masonry wall, there shouldalso be a lintel to support the wall above the louver to preventmoisture from seeping into the wall. If it is to be installed in apanel wall, the louver should be placed so that it is as flush aspossible with the inside wall.

CAUTION!

�� Figure 29 – Friction Fit Louver

Sealant, top and sides

Wall Intake LouverMaximum Recess 2"

Minimum Recess 1/16"

Sealant or gasketingmaterial also on sides

Wall Sleeve��Figure 30 – Friction Fit Using Shims





Wall Sleeve

Shims

Shims

Figure 31 – Louver Fastens to Wall Sleeve�� Sealant, top and sides




Wall Sleeve

Fasteners (by others)

Fasteners (by others)

Louver Installation Methods

CAUTION!



Panel Wall - Angle Bracket Mounting on ExteriorSurfaceFigure 34. This shows a typical panel wall installation where the

panel wall thickness is greater than that of the louver.In this case, it is possible to mount the louver withoutflange using angle brackets. The louver could be re-movable from the exterior of the building.On many panel wall applications, the panel wall manu-facturer may accomplish louver mounting by usingvarious aluminum extrusions to “build-in” the louveras a permanent part of the panel wall. All panel wallapplications will most likely utilize a full finish collar,meaning no wall sleeve recess into the wall itself. (seeCAUTIONS above).

Do not plug the weep holes in the bottom of the louver.Property damage and poor indoor air quality will result if watercannot drain to the outside from the weep holes. Appropriatefasteners must be used to prevent removal by unauthorizedpersonnel

Angle Bracket Mounting to Exterior SurfaceFigure 32. This shows a typical application where an angle bracket

is affixed to the edges of the louver and then the entireassembly is mounted from the outside by fastening tothe exterior surface using suitable hardware. This fig-ure shows an application where the wall sleeve is fullyrecessed into the wall and butts up against the louver.However, the same method of installation may be usedwhere only partial or no recess is required and ahorizontal air splitter between louver and wall sleevemust be installed.

Angle Bracket Mounting to Interior SurfaceFigure 33. This is a variation of the installation shown in Figure 32

where the angle brackets are mounted on the inside ofthe louver and fastened to the wall from the interior ofthe building. This also shows usage of a horizontal airsplitter with a partially recessed wall sleeve. Once thelouver has been installed, run a bead of caulk aroundthe outside perimeter of the frame to seal it watertight.

Do not use mounting angles or strips at the bottom of the intakelouver that run across the louver's entire length and plug theweep hole locations. Property damage and poor indoor airquality will result if water cannot drain to the outside from theweep holes.Appropriate fasteners must be used to prevent removal byunauthorized personnel.

CAUTION!

Figure 32 – Angle Bracket on Louver Mounts to Exterior Surface�� Wall Intake LouverMaximum Recess 2"



Recessed Wall Sleeve

Vertical Angle Bracket(See CAUTION)

CAUTION!

Angle Bracket(by others)


Figure 33 – Angle Brackets on Louver Mounts to Interior Surface�� Sealant, top and sides




Wall Sleeve

Angle Brackets(by others)

Angle Brackets(by others)

Finish Collar

Figure 34 – Panel Wall Using Angle Bracket on Exterior Surface

Angle Bracket(by others)


Wall Intake Louver

Wall Sleeve

Finish Collar


Louver without Collar

Maximum Recess of 2"



Panel Wall InstallationFigure 37. This installation is typical when the thickness of the

panel wall very closely approximates the thickness ofthe louver itself. Here only mounting straps may berequired, running the entire top length and vertical widthof the louver. This installation is perhaps the easiest. Thelouver could be removable from the exterior of thebuilding. (see CAUTION above).

Louvers With FlangeMasonry InstallationFigure 36. If the louver is supplied with a flange, follow these steps.1. A bead of caulk is applied to the inside of the top and side flange

that come in contact with the building facade.2. The louver with flange is placed into the opening and pushed

tight against the building.3. Fasten it to the exterior of the building using appropriate

fasteners for the installation.4. Seal the top and two sides from the inside with waterproof caulk

to make it weathertight. Do not seal the bottom flange. To do somay trap water behind the flange (see CAUTION above).

Figure 37 – Panel Wall Using Collar on Exterior Surface

Collar

Wall Intake Louver

Wall Sleeve

Finish Collar


Figure 36 – Masonry Wall Using Collar on Exterior Surface��Sealant or gasketingmaterial also on sides

Wall Sleeve



Flange is caulked oninside top and two

sides to seal to building

Figure 35 – Panel Wall Using Moisture Resistant Material/SheetMetal Framing

Wall Intake Louver

Wall Sleeve

Finish Collar



Maximum Recess of 2"

Panel Wall Using Moisture Resistant Material/Sheet Metal FramingFigure 35. If desired, the louver may be “framed” in moisture

resistant material or a moisture resistant material/sheet metal combination and then inserted into thepanel wall for final mounting. This installation isdesirable when the wall opening is considerably largerthan that required by the louver. Provide an air andwatertight seal and avoid blocking drainage at thebottom of the louver. After installation, be sure thatthere are no obstructions (mortar, nails, etc.) on theinside of the Louver where it meets the wall sleeve.

Do not use mounting angles or strips at the bottom of the intakelouver that run across the louver's entire length. This will plugthe weep hole locations and property damage and poor indoorair quality will result if water cannot drain to the outside from theweep holes.Appropriate fasteners must be used to prevent removal byunauthorized personnel.

CAUTION!



Condenser Discharge

Condenser Supply Air

Outside Air Section

Wall SleeveJunction Box

Outdoor View

Top View – Outdoor

Unit Overall Length Sleeve Recess LengthSize "L" (mm) "LR" (mm)024

86 (2184) 84 (2145)030036

98 (2489) 96 (2450)040044048 110 (2794) 108 (2755)054

Step 3 – Installing Wall Sleeve

Wall Sleeve Details

Figure 38. Wall Sleeve

Note: Wall sleeve (electric junction box is strapped to the wall sleeveduring shipping and is field assembled.

Figure 39 - Wall Sleeve Dimensions for Recessed Applications

CAUTION!The opening between the wall sleeve and the louver must becompletely enclosed by the installer to prevent air and waterleaks into the building

Table 7 - Wall Sleeve Dimensions

Overall Length "L"

Sleeve RecessedLength "LR"

28"(711mm)

7"(178mm)

1" (25mm)

11/4"(32mm)

111/2" (292mm)

81/8" (206mm)

41/2" (114mm)

1/2" (13mm)

1"(25mm)

1"(25mm)

1" (25mm)

113/8" (289mm)

1" (25mm)

5/8"(16mm)

NOTE: Please refer to “Transportation Damage” on page 4 forinformation on receiving, inspection, and filing claims for damageor loss with the carrier, and handling items supplied by McQuay.


Condenser Discharge Air Section

Condenser Supply Air Section

Outside Air Section

Wall Sleeve Threaded Studsfor Fastening to Unit Chassis

"D" Seal

113/8"(289mm)

28"(711mm)

Textured Charcoal BronzeFinish Top (Not Required forFully Recessed Sleeve)

“LR”

Amount Wall SleeveRecessed Into Wall

Cross Channel 1/4" Holes for Fasteningto Floor (fasteners by others)7 fasteners - AZ024, 0308 fasteners - AZ036, 0409 fasteners - AZ044, 048, 054

8 1/8" (206mm)

111/2" (292mm)

4 1/2" (114mm)

1" (25mm)

1" (25mm)

Stub-up area (5"x 5.5") When Power Wiring is Brought up Through Floor

Side Toward Louver

Air flow Direction

Figure 40 - Wall Sleeve Details (Recessed Type)

Outdoor

Indoor

The AAF-HermanNelson wall sleeve and louver design is basedon a "wet sleeve" concept. In brief, this means the design accommo-dates the penetration of some moisture into the rear outdoor sectionof the AZ unit with provisions for containment and disposal of thismoisture to the outdoors (see details in Figure 6). Therefore, properLouver, Splitter and Wall Sleeve installation is critical.

The wall sleeve must be installed before the AZ self-contained unitventilator can be placed. The recessed portion of the wall sleevemeasures approximately 84", 96" or 108"wide by 28" high and maybe recessed into the wall up to 113⁄8" in depth. Consult approvedAAF®-HermanNelson® submittal drawings for the job to determinethe proper amount of recess, if any, and recommended wall openingsize.

The AZ unit chassis attaches to the wall sleeve threaded studsusing 4-nuts and washers (Figure 40).

Recommended Sleeve RecessUnit Size Rough-in Wall Opening Length

Length Height “LR”

24 841⁄2" 281⁄2" 84"

30 (2146mm) (724mm) (2184mm)

36 961⁄2" 281⁄2" 96"40 (2451mm) (724mm) (2489mm)

4448 1081⁄2" 281⁄2" 108"

54 (2756mm) (724mm) (2794mm)

Table 8 - Recommended Rough-in Wall Opening

Pre Wall Sleeve Installation Checklist� Wall sleeve section of manual read in its entirety with

understanding of the installation procedures

� Louver installed and sealed with bird screen toward wallsleeve with 9" exhaust opening at top

� Structural columns exist to attach wall sleeve

� Sides of rough opening smooth and sealed

� Electrical and control wiring stubbed up

� Top, and bottom of wall envelope smooth and sealed and90o to interior mounting wall

� Splitters installed and sealed for mate-up to wall sleeve

� Metal flashing in place or sealed sloped mortar bed fordrainage from wall sleeve "D" seal channel to bottom oflouver

� Correct wall sleeve confirmed

� Wall sleeve assembled

Unit wall sleeve must be anchored to an internal wall column orother suitable support.

CAUTION!

NOTICE

Wall and floor must be at 90o to one another. If not, the floormust be leveled (90o) to wall.



Typical Wall Sleeve ApplicationsThe following is a brief description of three typical methods of installation. Many variations are possible, depending on wallthickness.

Figure 41. Thick Masonry Wall With Full Recess Wall Sleeve

Top View

Wall Sleeve

Wall Sleeve

Wall Column forAnchoring Wall Sleeve

Finished Wall OpeningDimension “LR” (Table 8)

Flanges for securingto wall and floor(supplied)



Figure 42. Masonry Wall With Partial Recess Wall Sleeve


Holes for Securing to Floor

Masonry Wall With Partial RecessThis example shows the wall sleeve partially recessed into a Masonry (Thick) Wall.

Top ViewFinished Wall Opening

Dimension “LR” (Table 8)

Wall Sleeve


Wall Sleeve Junction BoxHoles for Securing to Floor



Finish Collar

Panel Wall With No Recess (Full Projection)This is an example of a Panel (Thin) Wall construction with No Recess (full projection). The wall sleeve is secured flush to the wall and floorwith the addition of flanges. The wall opening is the same as the wall sleeve recessed length (dimension “LR”, table 8).

Thick Masonry Wall With Full RecessThis example shows the wall sleeve fully recessed into a Masonry (Thick) Wall.

Top ViewFinished Wall Opening

Dimension “LR” (Table 8)


Figure 43. Panel (Thin) Wall With No Recess (Full Projection) Wall Sleeve

Holes for Securing to Floor


Figure 47 – 195/8" Room Projection

Shading indicates portion of unit wall sleeve recessed into wall opening

Horizontal splitter (by others) must be installed wheneverthere is space between the wall sleeve and the louver.Seal the ends of the wall opening to prevent waterpenetration and air leakage. Pitch the splitters toward thelouver for water drainage

Splitters(by others)

30"(762mm)

165/8" (422mm)

S

28" (711mm)

W

28" (711mm)

1"(25mm)

5/8"(16mm)

3"(76mm)

Wall Thickness

WallSleeve

Finish TopUnit

Inside Top

1/2" (13mm)

195/8" (498mm)Room Projection

41/2" (102mm)

81/8"(206mm)

111/2"(292mm)

Figure 45 – 165/8" Room Projection or Full Wall Sleeve Recess



30"(762mm)

165/8" (422mm)

Louver(See CAUTION)

S

28" (711mm)

W

28" (711mm)

5/8"(16mm)

113/8"(289mm)

Wall ThicknessUnit

Inside Top

1/2" (13mm)


41/2" (102mm)

81/8"

(206mm)

111/2"(292mm)

Figure 46 – 217/8" Room Projection



30"(762mm)

165/8" (422mm)

S

28" (711mm)

W

28" (711mm)

1"(25mm)

5/8"(16mm)

51/4"(133mm)

Wall Thickness

WallSleeve

Finish TopUnit

Inside Top

1/2" (13mm)


41/2" (102mm)

81/8"(206mm)

111/2"(292mm)

30"(762mm)

165/8" (422mm)

S

28" (711mm)

W

28" (711mm)

Figure 48 – 28" Room Projection

1"(25mm)

5/8"(16mm)

113/8"(289mm)

Wall ThicknessWall SleeveFinish Top Unit Inside Top


1/2" (13mm)

28" (711mm)Room Projection

41/2" (102mm)

81/8"(206mm)

111/2"(292mm)

1"(25mm)

51/2"

(135mm)

CL

CL

14"(102mm)

28" (711mm)

SplittersLocation

CL

Figure 44 – Splitter Locations

CAUTION!

Louver(See CAUTION)

Louver(See CAUTION)Louver

(See CAUTION)


Unit Projection into Room and Wall Sleeve TypeWall

28" 217/8" 195/8" 165/8"Thickness Louver

Figure 46 Figure 45 Figure 44 Figure 43"W"Splitter Length from Wall Sleeve to Louver "S"

21/2" 21/2" 0

4" 21/2" 11/2"

6" 21/2" 31/2"

8" 21/2" 51/2"

85/8" 21/2" 61/8" 0"

10" 21/2" 71/2" 13/8"

107/8" 21/2" 83/8" 21/4" 0"

12" 21/2" 91/2" 33/8" 11/8"

137/8" 21/2" 3" 0"

14" 21/2" 31/8" 1/8"

16" 21/2" 21/8"

18" 21/2" 41/8"

24" 21/2" 101/8"

Table 10 - Wall Thickness, Unit Projection Into Room

NOTE: All dimensions are approximate and subject to change withoutnotice. Actual building dimensions may vary.

Unit Room Projection & Splitter Length Details


The installing contractor shall do the following:1. Make sure there is a masonry lintel supporting the wall

above any masonry opening and vertical wall column on the ends.2. Frame and seal airtight and watertight all openings between the

louver and wall sleeve not enclosed by the wall sleeve.

3. For details of required sealing, refer to Figures 52 and 53 forrecessed wall sleeve applications and Figures 54 and 55 fornonrecessed wall sleeve applications.

4. Seal watertight both ends and top of wall sleeve to building atrear flange of wall sleeve.

5. Seal watertight the bottom of wall sleeve at rear "D" seal tobuilding and pitch toward louver bottom channel. Also fastenthe wall sleeve cross channel to the floor through 1/4" holes withfasteners (by others) (7 fasteners - AZ024, 030), (8 fasteners -AZ036, 040), (9 fasteners - AZ044, 048, 054) (see Figure 40).

6. The louver must be installed with the drain notches located atthe bottom and the bird screen located on the unit side. Openingsbetween louver drain notches must be free of mortar or otherforeign material for water removal.

7. Apply rubber stripping or sealant material (by others) acrossfull length of wall sleeve splitters.

8. If the louver does not butt up against the wall sleeve:a. Fabricate a horizontal air splitter from galvanized steel, or

some other suitable weather resistant material. Pitch thesplitters toward the louver for water drainage. The width ofthe air splitters is determined by the width of the wallopening. The depth of the air splitters is determined by thedistance between the louver horizontal splitter and the wallsleeve splitter rails.

b. Position a 1" diameter drain hole in the horizontal splitter,approximately 6" from each end, next to the louver.

c. Install the horizontal air splitters by fastening to the wallsleeve splitter rails.

d. Apply rubber stripping or sealant material (by others) acrossfull length of horizontal air splitters to seal against louver.

9. Permanently seal any remaining air leaks so that, whenfinished:a. There is an airtight separation between the condenser inlet

air, condenser discharge air and the outdoor air inlet;b. There are no air leaks around the perimeter of the wall sleeve

where it adjoins the wall.

Figure 50 – Check that condenser section drain pan notchesare not blocked.

Overflow drain notches (2) in the flange of the condenser drainpan must not be blocked. Remove any sealant material fromwall sleeve bottom splitter rail that may cover these notches

CAUTION!

Drain slots at the bottom of the condenser section

The (2) condenser section drain pan notches are located approximately 1"from the left end and right end of the condenser drain pan flange.

Drain notches in flange of condenser section drain panInstallation and maintenance are to be performed only byqualified personnel who are familiar with and in compliancewith state, local and national codes and regulations, andexperienced with this type of equipment. Sharp edges andcoil surfaces are a potential injury hazards. Avoid contact with them.

CAUTION!

��Condensersection sleeve

Wall sleeve

Be sure that the drainslots at the bottom of thecondenser section sleeve

extend beyond the “D”seal and are located over

the sloped mortar bed,for removal of water to

the outside

IMPORTANT: Check to make sure that theoverflow notches in the flange of thecondenser section drain pan are not blockedby sealant material (see photo detail)

Sealant strips

IMPORTANT!Condenser section drain pan drain notches must not beobstructed by splitter or foam seal. Condensate overflow mustdrain from these notches in order that it can be removed fromthe drain pan to the outside (Figure 49 & 50).

Accumulated moisture can cause property damage if notproperly drained. Installing contractor must provide suchdrainage.

CAUTION!

Figure 49 – Wall Sleeve sealant material where it contacts thecondenser section drain flange

11/2"Exterior Edge

of Sleeve

Use appropriate screws to attach to the wall sleeve splitters.Ensure the screws do not restrict proper mate-up or sealing ofthe unit to the wall sleeve.

CAUTION!

General Considerations



4. Drill with the appropriate masonry bit, holes to receive fasteners(by others), for securing the wall sleeve to the building envelope.

5. Make a galvanized metal flashing or use sealed cement mortarfrom marked edge of “D” seal on wall sleeve, and pitch towardlouver. The mortar or flashing should be the same height as the“D” seal flange.

6. Fabricate splitter enclosure and /or splitters to fit space betweenlouver and wall sleeve, at marked reference points (see splitterdetails).

7. Apply gasketing (sealant material) to splitters and seal each endwhere splitters contact building envelope. A thin layer of caulkis suggested along the edge of the flashing or sloped mortar bed,where it contacts the “D” seal flange.

8. Position the wall sleeve into the opening, making sure all criticalsealing points make contact. Fasten the wall sleeve securely inplace using the previously drilled holes, and through the twoknockouts provided on each end.

9. Secure the splitters to the wall sleeve and seal each splitter toeach wall sleeve splitter rail (Figure 52 and 55).

10. Caulk or seal any space between the wall sleeve and the wall onboth the indoor side and the outdoor side (Figures 52 & 55).

A

B

C

D

C

E

Wall SleeveSplitter(s) Rail(s)

Seal Horizontal Air SplitterRail(s) to Louver. (By Others)

By Others. Wall Sleeve must be sealedwatertight at bottom at location shown. Re-fer to cross section detail of bottom of WallSleeve and Louver.

By Others. Seal Horizon-tal Air Splitters to build-ing at both ends.

By Others. Wall Sleeve must be sealed watertight at top andboth ends at location shown.

By Others. Louver must be sealed airand watertight at top and both ends.

By Others. Building must be sealed between Wall Sleeve and under Louver forwater run-off. Pitch toward Louver.

"D" Seal

By Others. Seal both ends of open-ing between Wall Sleeve and Louverto prevent air and water from enter-ing building structure and room.

3/16" Under Intake must be free for water run-off. LOUVER INTAKEMUST STAND ON EMBOSSED FEET LOCATED ON BOTTOM.

IMPORTANT NOTE:By Others: Attach Horizontal Air Splitters to Wall SleeveSplitters as shown. Splitters to have 1" dia. drain holeapprox. 6" from each end. Pitch splitters toward louverfor water drainage. See Figure 55 for splitter attachmentdetails.

Figure 52 - Recessed Wall Sleeve – Mounting and Sealing Splitters to Wall Sleeve and Louver

Sloped mortar bed or metal flashing must not restrict waterdrainage under louver.

CAUTION!

The installing contractor must do the following:

1. Place the wall sleeve into the wall opening and recess itthe amount shown on the approved AAF®-HermanNelson®

submittal drawings.2. Level the wall sleeve horizontally and plumb the wall sleeve

vertically.3. (See Figure 51). Mark top (A), bottom (at “D” seal flange) (B),

and sides where wall sleeve extends into the wall opening (C).Mark the wall sleeve cross channel holes (D). Also mark pointswhere wall sleeve splitters meet the building envelope (E).

Recessed Applications

Locate drain lip at bottom of vertical louver to allow properdrainage. Bird screen must always be on side toward unit.

CAUTION!Wall sleeve must be anchored to an internal wall column or othersuitable support.

CAUTION!

Figure 51- Mark Edges and Points of Wall Sleeve on BuildingEnvelope

Level, both vertically and horizontally

BuildingEnvelope

Outside

Inside

Splitter Rails


See Figure 55

Outside

Indoor


Figure 53 - Recessed Wall Sleeve - Direct Sealing Wall Sleeve to Louver

"D" Seal

By Others. Wall Sleeve must be sealed air and watertight at bottom at“D” seal location shown. Refer to cross section detail of bottom of WallSleeve and Louver (Figure 62).

By Others. Building must be sealed between Wall Sleeve and under Louverfor water run-off. Pitch toward Louver.

3/16" Under Intake must be free for water run-off. LOUVER INTAKE MUST STANDON EMBOSSED FEET LOCATED ON BOTTOM.

By Others. Louver must be sealed air and watertight attop and both ends.

IMPORTANT NOTE: By Others. Seal Lou-ver to Wall Sleeve at top and bottom WallSleeve Splitter Rails(s), and ends.

Wall Sleeve Splitter Rail(s)(See Caution Above)

By Others. Wall Sleeve must be sealed watertight at top andboth ends at location shown.


CAUTION!

By Others. Seal both ends of openingbetween Wall Sleeve and Louver toprevent air and water from enteringbuilding structure and room.

The installing contractor must check the following beforeproceeding:

• A structural wall column exists in the wall for anchoring thewall sleeve to the building.

• The louver is installed correctly and sealed, with the wall cavityair and water tight.

• Electrical and wall sleeve control wiring is roughed in.• The wall behind the unit is smooth and plumb.• The seals on the rear of the wall sleeve take up the small

irregularities of normal masonry construction.• Moisture resistant material strips are installed on irregular walls

or walls with mullions in order to provide a flush surface for thewall sleeve to seal against.

• Moldings at the floor/wall line are omitted behind the unit.The installing contractor must do the following:

1. Apply sealant (by others) to bottom edge at rear of unit top andboth end flanges on rear of wall sleeve to provide air and watertight seal to interior wall of building.

2. Level the wall sleeve horizontally, and plumb the wall sleevevertically.

3. Mark top, bottom (at “D” seal flange), and sides where wallsleeve extends into the wall opening. Mark the wall sleeve crosschannel holes and the vertical frame holes (4). Also mark pointswhere wall sleeve splitters rail(s) meet the building envelope.

4. Drill with the appropriate masonry bit, holes to receive fasteners(by others), for securing the wall sleeve to the building envelope.

Full Projection Applications

Wall sleeve must be anchored to an internal wall column or othersuitable support.

CAUTION!

5. Make a galvanized metal flashing or use sealed cement mortarfrom marked edge of “D” seal on wall sleeve, and pitch towardlouver.

6. Fabricate splitter enclosure and /or splitters to fit space betweenlouver and wall sleeve, at marked reference points (see splitterdetails).

7. Apply gasketing (sealant material) to splitters and seal each endwhere splitters contact building envelope. A thin layer of caulkis required along the edge of the flashing or sloped mortar bed,where it contacts the “D” seal flange to provide an air and watertight seal.

8. Fasten the wall sleeve securely in place by:a. Securing it to the floor through the two (2) 3/8" diameter

holes in the turned out bottom flanges of the wall sleeve ateach end, and/or:

b. Securing it to the wall through the two (2) 3/8"diameter holes in the turned out vertical flanges of thewall sleeve at each end to a wall structural column on each side.

9. Panel wall applications must have:a. the wall opening sleeved to prevent moisture from seeping

into the wall interior.b. If the panel wall is less than 21⁄4" thick, the wall louver

must be installed flush to the interior wall and beallowed to extend to the outside as required, and must be airand water tight.

10. Seals on wall sleeve must be compressed to provide a watertightseal after installation is complete.

11. Secure the splitters to the wall sleeve and seal each splitter toeach wall sleeve splitter rail (see Figure 54 and 55).

Outside

Indoor



Wall Sleeve Splitter Rail(s)(See Figure 53)

Seal Horizontal Air Splitter(s) to Louver.

By Others. Wall Sleeve must be sealed air and watertight at bottom “D” seal location shown. Refer tocross section detail of bottom of Wall Sleeve and Louver.

By Others. Seal HorizontalAir Splitters to buildingat both ends.

By Others. Louver must be sealed airand watertight at top and both ends.

By Others. Building must be sealed between Wall Sleeve and underLouver for water run-off. Pitch toward Louver.

"D" Seal

By Others. Seal both ends of openingbetween Wall Sleeve and Louver toprevent air and water from enteringbuilding structure and room.

3/16" Under Intake must be free for water run-off. INTAKE MUSTSTAND ON EMBOSSED FEET LOCATED ON BOTTOM.

IMPORTANT NOTE:By Others: Attach Horizontal Air Splitters to Wall Sleeve Splitters asshown. Splitters to have 1" dia. drain hole approx. 6" from each end. Pitchsplitters toward louver for water drainage.

Figure 54 - Sealing Full Projection Wall Sleeve and Horizontal Air Splitters.

By Others. Apply sealant (by others) to bottom edge of unit (not shown) and to top flange and both endflanges of wall sleeve (as shown.) This must provide a watertight seal to the wall of the building.


CAUTION!Wall sleeve must be anchored to an internal wall column or othersuitable support.

CAUTION!

Leakage of outdoor air wastes energy, causes drafts and erratic unit ventilator operation. These passages are also a potential pathway forwater. Provide a sealing surface at the floor line. Install the wall sleeve in a wall made of noncombustible material, and on a floor made ofnoncombustible material. Floor must be level, unbroken and structurally strong to support the unit.

Seals

Top Splitter(by others)

Bottom Splitter(by others)

Seal

Seal

Bottom Wall Sleeve Splitter Rail

Top Wall Sleeve Splitter Rail

Screws (by others)

Figure 55 - Attaching Splitters to Wall Sleeve Splitter Rails and Seals.

Slope DownToward Louver

Slope DownToward Louver

Vertical and Horizontal MountingBracket(s) Holes for Non-Recessed(Full Projection) Applications

1"(25mm)

5/8"(16mm)

1"(25mm)

CAUTION!

Outside

Indoor



Figure 56 - Sealing Full Projection Wall Sleeve to Louver Intake Without Horizontal Air Splitters.

By Others. Seal both ends of opening between WallSleeve and Louver to prevent air and water fromentering the building structure and room.

"D" Seal

By Others. Wall Sleeve must be sealed air and watertight at bottom “D” seal at locationshown. Refer to cross section detail of bottom of Wall Sleeve and Louver.

By Others. Building must be sealed between Wall Sleeve and underLouver for water run-off. Pitch toward Louver.

3⁄16" Under Intake must be free for water run-off. INTAKE MUSTSTAND ON EMBOSSED FEET LOCATED ON BOTTOM.

By Others. Louver must be sealedwatertight at top and both ends.

IMPORTANT NOTE: By Others. Seal Louver toWall Sleeve at top, Wall Sleeve Splitters and ends.Wall Sleeve

Splitter Rail(s)

By Others. Apply sealant (by others) to bottom edge of unit (not shown) and to top flange and both endflanges of wall sleeve (as shown.) This must provide a watertight seal to the wall of the building.

Wall sleeve must be anchoredto an internal wall column orother suitable support.

CAUTION!

Vertical and Horizontal Mounting Bracket(s)Holes for Non-Recessed (Full Projection)Applications

Typical Field Assembled Cross-Over Piping Considerations

Wall/FloorLine

Air Vents

45o St. Elbow brazedto piping

(one each end of unit)Typical 1-3/8" O.D.

15-1/2"(394mm)

1-3/8"(35mm)

3-5/8" (92mm)

1-1/2" (38mm)

Both EndsBoth Ends

Brazed connections toindoor coil piping

Both Ends

Both Ends3 - Both EndsReturn Line

Supply Line

Left End of Unit

Figure 58 – Typical Cross-over Piping Locations Through UnitWall Sleeve Top

Figure 57 – Cross-over Piping in Wall Sleeve Top (By Others)

Wall sleeves used for unit projections of 217/8" and 28" into theroom can accommodate field hydronic cross-over piping. 13/8" O.D.maximum piping with insulation resulting in 17/8" total can beinstalled: (Figure 57) through the wall sleeve finish collar top, or(Figure 57a) enclosed in wall cavity. Pipes must be well insulatedagainst freezing.

Wall

Wall

28"(711mm)

217/8"(556mm)

2"(51mm)

2"(51mm)

Cross-overpiping

Cross-overpiping in wall

cavity

30" (762mm)

30" (762mm)

28"(711mm)

Figure 57a – Cross-over Piping in Wall Cavity (By Others)

WARNING!Insulate cross-over piping to help protect against freezingand sweating.

End of UnitwithoutEnd Panel

Outside

Indoor



Refer to the wiring diagram furnished with the unit to determineelectrical connections required.

Refer to Figures 61 & 62 for stub-up locations. Refer to pages 29through 30 for main power connections and field wired communica-tion modules and pages 54 - 57 for remote wall mounted sensorcontrols, if any.

Check wall sleeve nameplate to verify it is the correct voltage andamperage for the AZ model to be installed.

Whenever the electric stub-up is brought in through the floorwithin the confines of the wall sleeve and any portion of the wallsleeve is recessed into the wall, the watertight conduit must be flushwith the floor to permit installation of the wall sleeve. Sufficientspace must be left around the conduit to permit the attachment ofcontinuing watertight conduit after the wall sleeve is installed. Forconcrete slabs, it is recommended that this be accomplished either bysleeving the conduit or by recessing a watertight junction box into the slab.

Whenever the electric stub-up is brought in through the floorwithin the confines of the wall sleeve, and any portion of the wallsleeve is recessed into the wall, the conduit must be flush withthe floor to permit installation of the wall sleeve. Sufficient spacemust be left around the watertight conduit to permit the attachmentof continuing conduit after the wall sleeve is installed. Forconcrete slabs, this should be accomplished either by sleevingthe watertight conduit or by recessing a watertight junction boxinto the slab.

All field wiring must be in accordance with the National ElectricCode and applicable local codes.

CAUTION!

CAUTION!

Use copper conductors only. Aluminum conductors can causeequipment failure and overheating hazards. All wiring in righthand compartment must be class 1.

CAUTION!

Procedure – Main Power ConnectionsThe main steps to wiring the wall sleeve are as follows:

1. Confirm that the main power to the wall sleeve wires are de-engized and tagged-out.

2. Remove top cover plate and protective plate covering theterminal lugs on the wall sleeve junction box (Figure 59).

3. Bring the main power through the waterproof conduit to thejunction box on the wall sleeve, to the terminal lugs on theupstream side of SW1-Main Power non-fused “ON-OFF” switch.See Figure 60 for terminal lug locations and phase connections.Insert main power wires into the terminal lugs (A, B, C) andtighten securely. Power wiring must be hooked up with properphasing. Electrical (3) phasing must be A, B, and C for electricalphase 1, 2, and 3 (A = L1, B = L2, C = L3). Single phase powerwiring must be A and C. Check supply power with a phase meterto match the unit phase wiring.

SW1-Main PowerNonfused “On-Off” Switch(AAF-HermanNelson)

BA C

21 22 23

Figure 60 - Detail of SW1-Main Power Connections

Terminal lugs for main power wiringfrom wall sleeve to chassis.Field connection by others.

Terminal lugs for supply power wiring towall sleeve. Field connection by others.

Note: B and 22 not used on single phase.

Disconnect all electrical power before servicing unit toprevent injury or death due to electrical shock.

DANGER!

4. Bring the control wiring (optional remote wall sensor, optionalbuilding automation control wiring to the optional communica-tion module, optional communications for other externalinputs/outputs) through the waterproof conduit to the junctionbox on the wall sleeve, to the appropriate capped wires withinthe wall sleeve junction box.

5. Connect remote wall sensors and external input/output devicesto the appropriate wires using the existing wire caps. Verify thatthe wires are securely fastened within the wire caps. Wiringdiagrams for doing so are provided in Figures 63 a, b, and c.

6. Reinstall the top cover plate and protective plate covering theterminal lugs of the wall sleeve junction box.

AZ unit compressors are single-direction rotation compressorsand can be damaged if rotated in the wrong direction. For thisreason, proper phasing of electrical power is important.Running the compressor backward will damage thecompressor and void the warranty

CAUTION!

Protective plate covering terminal lugs.Reverse and replace this cover afterpower supply connections are made tothe unit (long side of plate on top, andshort side over front).

Figure 59 - Wall Sleeve Junction Box Cover Plates

Wall sleeve junction box top cover plate.Remove two screws.

Step 4 – Wall Sleeve Electrical Connections


Stub-up through side must be confined to this area: cut in field. Opening mustbe carefully prepared and gasketed for air tightness.

Control receptacle with plug-in disconnect (AAF-HermanNelson). Leads areprovided for wire nut connection to all remote controls.

5/8" x 35/8" opening (for main power wiring from wall sleeve to chassis). Fieldconnection by others.


Safety Precaution: Reverse this cover when unit is removed from wall sleeveto cover opening in the end of switch box.

SW1-Main Power Nonfused “On-Off” Switch (AAF®-HermanNelson®)

.875" Dia. Knockouts (3)2.5/1.75" Dia. Knockout

1"9"

5"

16"

Stub-up from bottom must be confined in this area.

SW1-Main Power Nonfused “On-Off” Switch (AAF-HermanNelson)

.875" Dia. Knockouts (3)

Safety Precaution: Reverse this cover when unit is removed from wall sleeveto cover opening in the end of switch box.

5/8" x 35/8" opening (for main power wiring from wall sleeve to chassis). Fieldconnection by others.


2.5/1.75" Dia. Knockout

Control receptacle with plug-in disconnect (AAF-HermanNelson). Leads areprovided for wire nut connection to all remote controls.

5" 51/2" 1/2"

61/4"

Right End of Unit

Figure 61 - Wall Sleeve With Electric Stub-up From Bottom or Side.

Wall Sleeve

Conduit (by others)

Rear edge of wall sleeve

Wall Sleeve

Conduit (by others)

Rear edge of wall sleeve

Right End of Unit

3.0/2.0" Dia. Knockout

Figure 62 - Wall Sleeve With Electric Stub-up From Bottom or Side.

“D” Seal

“D” Seal

Wall Sleeve Electrical Stub-up Details



Figure 63A - 12-pin Plug MicroTech II™ Control Wiring Diagram

GNDComm

BI-6BI-5BI-4

896908A907A906A905A

Shield896908907906905

P1 (12-pin)Connector

Unit Ventilator

6432

51

Setpnt Adjst.CommSensorLED

GNDAI-2

CommAI-1LED


Wall Sleeve

WireCaps

896GRNBLKWHTRED

896GRNBLKWHTRED

Remote Wall Sensor(Option)

External InputOption 3 Device

(by others)


(by others)


(by others)

Ventilation Lockout(default) or

Exhaust Interlock

RemoteShutdown

Unoccupied (default)or Dewpoint Humidity

Shield

Note: For Electromechanical use � only (see page 57).� and � not used for electromechanical. Control connections forelecromechanical are made to the terminal block in the left endcompartment.

Unit Connection Procedure to Wall SleeveBefore installing the unit ventilator into the wall sleeve confirm

that power to the wall sleeve is de-energized and tagged out.

After the unit ventilator has been installed into the wall sleeve,do the following:

1. Confirm that power to the wall sleeve is de-energized andlocked and tagged-out.

2. Plug in the unit control wiring male plug(s) into the appropriatewall sleeve female plug(s) (Figure 63).• Plug in 4-pin (for MicroTech II and Electromechanical).• 10-pin (MicroTech II only).• 12-pin (MicroTech II only).

3. Remove the wall sleeve junction box terminal lugs cover plate.4. Insert the unit chassis main power wires (21, 22, and 23) into the

wall sleeve disconnect switch terminal lugs. Tighten the termi-nal lugs securely.

5. Reinstall the wall sleeve terminal lugs cover plate over the mainpower wires with the label reading correctly, (long edge of plateon top and short edge over front).

6. Proceed to page 50 to complete electrical procedure.

1

Note: Not all external input options are available for all models.

Disconnect all electrical power before servicing unit toprevent injury or death due to electrical shock.

DANGER!

CAUTION!AZ unit compressors are single-direction rotation compressorsand can be damaged if rotated in the wrong direction. For thisreason, proper phasing of electrical power is important.


Terminal lugs for main power wiring from unit towall sleeve. Field connection by others.

Legend

Plug In Comp Tie Point

Splice Optional Wiring

Tap Conn. Wired by Others

Term Conn. Factory Wired

Capped Wire Ground

External Deviceby Others

Figure 63 - Wall Sleeve Junction Box Details for MicroTech II

SW1-Main PowerNonfused “On-Off” Switch(AAF-HermanNelson)

Terminal lugs for supply power wiring (byothers) to wall sleeve. Field connectionby others.

3

1

2

Table 11 - Wall Sleeve Junction Box Wiring Legend

BA C

21 22 23

Note: B and 22 not used on single phase.


Figure 63B - 10-pin Plug MicroTech II™ Wiring Diagram2

Figure 63C - 4-pin Plug MicroTech II Control Wiring Diagram3

Shield


Unit Ventilator

xBO-2

xBO-1BO-6BO-6


Wall Sleeve

WireCaps

601A602A603A604A605A

External OutputOption 1 Device

(by others)


(by others)


(by others)

Lights On/OffSignal or

Motorized WaterValve Open/Close

Fault Indicationor

Pump RestartSignal

Auxiliary HeatSignal

orExhaust FanOn/Off Signal

Comm

Comm

606A608A610A

24vac Supply24vac Comm

601602603604605606608610

CommunicationModule

(4-pin)Male ConnectorUnit Ventilator

Optional Building Automation System (BAS)

Wiring: Use twisted shielded pair (Connect Air W221P-2544 or equiv.).Daisy-chain and tie shield to earth ground at one point only.The polarity of the signal must always be maintained throughout the network.Always connect + to + and – to –. The shield connection must becontinuous throughout the entire network and must be connectedto earth ground at one (and only one) point.

Use Belden 8471, NEMA Level 4, or Echelon-approved equivalent wire.Since the LonWorks communication wiring is polarity insensitive, no polaritymust be observed when making connections via the unshielded twisted-pairwiring.

Note: The N2 Bus can use either solid or stranded wires of the following types:3-wire twisted cable, 2 twisted-pair telephone cable, or two twisted pairwith a shield.The wiring is polarity sensitive.The polarity of the signal must always be maintained throughout the network.Always connect + to + and – to –. The shield connection must becontinuous throughout the entire network and must be connectedto earth ground at one (and only one) point.

LonWorks®

FTT–10 (A)

FTT–10 (B)

BACnet® Metasys®

GND

3

2

1

(4-pin)Female Connector

Wall Sleeve

Black

Red

GNDN2–

N2+

GNDRT–

RT+

(By others)(By others)(By others)

Note: Not all external input options are available for all models.



Model AZS, AZQ, AZV, AZU, AZR 024 030 036 040 044 048 054

Nominal Airflow – CFM (L/S) 750 (354) 800 (378) 860 (406) 920 (435) 1400 (662) 1400 (662) 1400 (662)

Room No. of Fans 3 3 4 4 5 5 5

Fan Data Dia. – In. (MM) 63⁄4 (171) 63⁄4 (171) 63⁄4 (171) 63⁄4 (171) 63⁄4 (171) 63⁄4 (171) 63⁄4 (171)Width - In. (MM) 71⁄4 (184) 71⁄4 (184) 71⁄4 (184) 71⁄4 (184) 71⁄4 (184) 71⁄4 (184) 71⁄4 (184)

Room Fan Motor Horse Power 1⁄4 1⁄4 1⁄4 1⁄4 1⁄4 1⁄4 1⁄4Outdoor Fan Motor Horse Power 1⁄3 1⁄3 1⁄3 1⁄3 3⁄4 3⁄4 3⁄4

Nom. Size – In. (MM) 10x481⁄2x1 (254x1232x25) 10x601⁄2x1 (254x1537x25) 10x361⁄2x1 (254x927x25)Filter Data Area – FT2 (M2) 3.37 (0.31) 3.37 (0.31) 4.20 (0.39) 4.20 (0.39) 5.08 (0.47) 5.08 (0.47) 5.08 (0.47)

Quantity 1 1 1 1 2 2 2Approx. Ship Weight – Lbs. (KG) 885 (402) 885 (402) 975 (442) 975 (442) 1075 (448) 1075 (448) 1075 (448)

Units sound tested per ANSI. Contact factory for data.

Table 12 - General Unit Data

Pre Installation Checklist for Unit� Lintel installed above wall louver to support masonry wall

� Birdscreen on wall louver facing toward room interior

� Embossments of wall louver at bottom and free for drainage

� Wall sleeved to prevent moisture seepage into wall

� Free opening under wall louver clear for water run-out

� Wall louver anchored to building and sealed against airand water leaks

� Horizontal air splitters between wall sleeve and louver(if required), water and air tight

� Wall sleeve anchored to building and sealed against airor water leaks

� Sealant material applied to "D" seal cross channel flangeto seal to drainage slope edge

� Unit inspection complete for damage, data plate infor-mation and correct location of unit (refer to page 3 fortransportation damage)

Step 5 – Installing the Unit Ventilator

The AZ Self-contained unit comes with an allen wrench, four (4)insulation donuts, and four (4) lagging washers in the envelopeplaced in the left end compartment of the unit (Figure 64).Important: 1. Move only one unit at a time.

2. DO NOT DROP UNIT!3. Store in a clean dry environment.4. Lift only from designated end.

Lower crated unit from dolly (if used), but DO NOT DROP.Remove unit from skid if unit will be installed immediately ( Figures65–67) . If storing unit prior to installation, replace the carton overthe unit until installation is begun. This will prevent the unit frombeing scratched or damaged by other workers preparing the area.

End panels are shipped separate from the unit and are installedafter unit installation is complete.

• Unit comes encased in plastic bag. Be sure that the plastic bag isdisposed of properly after removing permanently.

• Units are shipped in trucks. See table 1 for loading, truckloadquantities, weights and dimensions.

• Unloading difficulties at the job site can be minimized by havingthe necessary equipment and manpower available when the ship-ment arrives on the job site.

• Forklift type vehicles should be used to unload the units. Whenusing a forklift, it is very important that the unit be lifted only fromthe end designated on the carton.

• Forks on the forklift should be minimum of 72 inches long.• Strap type sling of nylon or other material should be used rather

than wire rope to prevent damage to the unit.

WARNING!

By McQuayMADE IN USA

Unit Ventilator

TRUCK FROM THIS END

CAUTION

To prevent unit damage, 72”

forklift tines must be used to

lift or move this crate

CAUTION

Damage to the unit can result

if crates are stacked more

than (2) high

4’

UP

HANDLE WITH CAREMANEJE CON CUIDADOMANIEZ AVEC PRUDENCE

FRAGILE

6’

CorrugatedRecyclesInstruction Sheet IncludedSe Incluye Hoya De Instrucciones

Feuille D Instruction Incluse

UP

HANDLE WITH CARE

MANEJE CON CUIDADO

MANIEZ AVEC PRUDENCEFRAG

ILE

DAMAGEIMPORTANTThis merchandise was carefully packed and thoroughly inspected before

leaving our factory. Responsibility for safe delivery was assumed by the

carrier upon acceptance of the shipment. Claims for loss or damage sustained

in transit must be made to the carrier as follows:

VISIBLE LOSS OR DAMAGE

Any external sign of loss or damage must be noted on the freight bill or express

receipt, and signed by the carrier’s agent. Failure to adequately describe such

external evidence of loss or damage may result in the carrier refusing to honor

a damage claim. The carrier will supply the form required to file such a claim.

CONCEALED LOSS OR DAMAGE

Concealed loss or damage means loss or damage which does not become

apparent until the merchandise has been unpacked. The contents may be

damaged in transit due to rough handling even though the carton may not

show external damages. Such damage is the carriers responsibility.

When the damage is discovered upon unpacking, make a written request

for inspection by the carrier agent within fifteen days of the delivery date,

and file a claim with the carrier.

Remove Packaging and Inspect the Unit VentilatorCarefully remove the packaging, remaining alert to any signs of

shipping damage (Figure 64). Be careful not to discard componentsthat may be included with the packaging. (Retain some or all of thepackaging to provide jobsite unit location information and tempo-rary protection for the unit ventilator after installation.) Be sure todispose of plastic packaging and protective cardboard properly, inaccordance with local recycling rules and guidelines.

If unit is damaged, file a claim with the carrier. Notify the localAAF®-McQuay Unit Ventilator representative immediately.

Properly Identify Unit Ventilator(s)To be sure the correct unit ventilator(s) is/are in the correct

location(s), the installer must check the packing list and unit identi-fication/tagging number(s) against the plans. Further, the unit dataplate, (Figure 64) located on the lower right end of the unit ventilator,contains specific information of standard components (see page 66)

Figure 64 - Remove Packaging to Identify Unit

IMPORTANT

Cut out the rear of the carton and place it over the unit forprotection until all construction has been completed.

Fasteners (each end)

Protective plastic cover

Carton

Strapping

Shipping envelope insideleft front access panel

Unit Data Plate

Plastic packaging is a suffocation hazard. Dispose of properly.Keep away from children.

CAUTION!


Figure 65 - Removing Unit from Skid

Removing Unit from the SkidRemove fasteners at each end which hold the unit to the skid and

carefully slide the front of the unit off the skid (1). Tip unit forwarduntil the bottom of the slotted front kickplate is resting on the floor(2). Lift rear of unit off of the skid by tipping unit forward whilesupporting the unit from the front, until it is possible to slide skid outfrom under the unit. GENTLY LOWER the rear of the unit to thefloor (3).

Note: These are general instructions. Refer to the AAF-HermanNelsonsubmittal drawings for specific dimensions, unit arrangement, stub-up locations, recommended wall opening size, etc.

Before Moving Unit Up to Wall Opening Checklist

� Unit is correct for the location

� Unit installation section of manual was read in its en-tirety with understanding of the installation procedures

� installation of the wall sleeve and air intake louver inaccordance with the instructions on pages 11 through 17

� For full projection applications, the field applied pressureadhesive gasketing has been inspected and forms anunbroken and tight seal to prevent air and water leaks

� Room air and condenser fan bearings are secure andoiled

� Room air and outdoor condenser fan shaft coupling setscrews are tightened securely to both motor shaft and fanshaft

� Room air and condenser fans rotate freely and quietly

� Fan wheel set screws are tight

� Construction debris inside unit, in the area of the wallsleeve, the entire surface of the sealed, sloped mortarbed, and the drainage space at the bottom of the outdoorair louver has been cleaned up

� Adequate access space for maintenance, service andunit removal has been provided

� Wall sleeve is properly sealed air and watertight

� Power to wall sleeve is correctly hooked up and controlwiring if any is hooked up

� Wall and floor are 90o to one another. If not, floor needsto be leveled (90o) to wall

� Unit power supply is correct and verified by unit dataplate

Position the Unit VentilatorMove the unit ventilator to the correct location. See Table 12 for

approximate shipping weights.If the unit packaging has already been removed, carefully remove

unit ventilator from wood skid (Figure 65 – 67). Be sure to properlydispose of the skid in accordance with local recycling rules andguidelines.

Lower crated unit from dolly (if used), but DO NOT DROP.Remove external carton by lifting off, and SAVE THIS CARTON.

1. Carefully slide the front of the unit off the front of the skid.

2. While supporting unit from the front, slowly tip unit forward untilbottom of kickplate is resting on floor.

3. Remove skid and GENTLY lower the rear of the unit to the floor (DONOT DROP).

Tip forward untilkickplate rests on floor

Kickplate

Approx. 10"

Directions given in this bulletin for right and left sides assumea position facing the indoor side of the unit ventilator

INFORMATION

DANGER!Hold down clamps must be on unit when moved. If unit shiftsor slides off skid, it can be damaged or cause personal injury.

Check for concealed shipping damage.End panels are shipped separate from the unit and are installed

after unit installation is complete.

Figure 66.

Figure 67.



Before Sliding the Unit into PlaceSliding of this unit to the wall can be made easier with the

assistance of Caster Kit P/N 105629001 (Figures 68 & 69), or a pieceof cardboard placed under the unit will make this job easier andreduce marring the floor. (Do not leave cardboard under unit afterinstallation.)

Be certain that the field-supplied electrical connections are inplace, de-energized and in accordance with the plans.

Installing CastersIf the unit was ordered with the optional caster wheels, utilize

these casters to help move the unit into position. The outdoor sectioncomes with two swivel casters. Casters are installed as follows:

1. Remove the left and right front access panels.2. With the one caster (left end), ensure the caster is fully up (turn

bolt clockwise to raise, counterclockwise to lower).3. Locate in the left end compartment the slots and bolt location.4. Insert the tines of the caster channel into the slots. Securely

bolt the front to the unit front rail.5. Repeat for the right caster wheels (2).6. Slowly engage the casters by lowering the bolt. Make all caster

adjustments equally before raising the unit.7. When full engaged, the unit will roll forward into the wall

sleeve. When installed, reverse the procedure and remove thecaster kit. Save the caster kit for future unit servicing orreplacement.

ProcedureWall and floor must be at 90o to one another. If not, the floor needs

to be leveled (90o) to wall. Be sure that the condenser section drainpan notches are not blocked (see Figure 50 and 73).

Slide the unit up to the wall sleeve aligning the four threaded studs(Figures 71) on the wall sleeve with the holes on each end of the unit.If the optional indoor caster kit is not used, a piece of cardboardplaced under the unit will make the job easier and prevent markingthe floor (Do not leave the cardboard under the unit after installa-tion). The wall sleeve mounting studs should slide through the holesin the unit.

If a finish collar is used, make sure that the unit, finish collar andwall sleeve all line up properly.

Confirm that the bottom splitter rail seal in area of unit condenserdrain pan motches is removed (see Figure 73).

Figure 68 – (Optional) Indoor Section Caster Installation

Raises andlowers casters(two oncompressor endof unit)

Raises and lowers caster

Figure 69 – (Optional) Indoor Section Caster Shown in RightEnd Compressor Compartment

Figure 70 – Slide the unit up to the wall sleeve

Finished Wall

Finish Collar

Optional IndoorSection Caster Floor surfaces in

these areas must befree of debris

DANGER!Disconnect all electrical power before installing the unit toprevent injury or death due to electrical shock. Ensure the wallsleeve junction box protective cover plate is installed.

Caster mountingcut-out

Right Caster

Left Caster

Clockwise to raise

Counter-clockwise to lower



Leakage of outdoor air wastes energy, causes drafts and erraticunit ventilator operation. These passages are also a potentialpathway for water. Provide a sealing surface at the floor line.Install the wall sleeve in a wall made of noncombustible material,and on a floor made of noncombustible material. Floor must belevel, 90o to wall, unbroken and structurally strong to support theunit.

CAUTION!Do not draw the nuts up as tight as possible as they maydistort the unit and loosen the caulking and wall sleeve fromtheir position.

CAUTION!

Figure 72 – Wall Sleeve Drainage Considerations

Figure 71 – Slide the unit up to the wall sleeve threaded studs

Wall Sleeve ThreadedStuds for Mountingto Unit

Check to see that the unit ventilator is level from end to end andback to front. Using a 4' level is recommended.

Place the washers over the threaded studs and tighten themounting nuts (see cautions).

Turned out bottom flange onwall sleeve cross channel, forfastening to floor

7 fasteners- AZ024, 0308 fasteners-AZ036, 0409 fasteners-AZ044, 048, 054Wall Sleeve

Be sure that the drain slots atthe bottom of the condensersection extend beyond the “D”seal and are located over thesloped mortar bed, for removalof water to the outside

Wall Sleeve “D” seal

Condenser (outdoor)section swivel caster

Condenser sectionsleeve

Figure 73 - Bottom Splitter Rail Seal Removal

Area of Seal to Remove (RightEnd) to Allow Drainage fromCondenser Section Drain PanNotches. (See Figure 72). Also,Clear Area for Left End Notch.

The floor, at the location of the outside condenser sectioncaster wheels must be smooth and level, and free of anydebris. The condenser section must make contact and seal tothe "D" seal on the cross channel of the wall sleeve to helpprevent air and water leaks into the building.

IMPORTANT

Also see Figures 49 & 50 for condenser section drainage information



Use piping shut off valves and connection unions for futureservicing to the coil supply and return stubs, instead of hardpiping. This permits easy removal of the coil or control valveif servicing is required.

Figure 74 - Hot Water Coil Connections

Hot Water Coil

Hot Water Return

Hot Water Supply

Water Coil ConnectionsHook up water piping in accordance with Figures 74 through 80

for hot water coil connections.

Air flow

Failure to install water piping to coils properly can result inimproper unit operation and coil freeze-ups.

Proper ventilation is required for brazing. When brazing, be sureto protect unit ventilator components from overheating damage(melting insulation, also damage to valves, wiring, electronics,sensors, etc.).

Before filling, be sure to flush all piping adequately so that alldebris is removed. Debris can prevent proper valve operation,resulting in overheating, over-cooling, etc.

Ensure proper insulation of supply and return piping. Properinsulation prevents loss of unit ventilator capacity, overheating ofend compartment.

The piping to and from the unit must be protected from outside airand freeze conditions. The piping must be suitably insulated forcondensation or heat lose or gain. Penetrations entering the unit endcompartments must be fitted/sealed for unit integrity.

Figure 75 - Protect Components From Overheating Before Brazing

Use A Quenching Cloth When Brazing,to Prevent Overheating The PipingComponents (Avoid Valve Damage andEratic Operation)

CAUTION!

After BrazingInstall provided donut shaped insulation seals around pipe fittings,

by removing white backing. Press seals up to coil partition to sealgaps in partition insulation.

NOTICE

Consider addingpiping unionsfor future servicing(by others)

Be sure the hot water supply and return system are thoroughlyflushed and cleaned before connecting piping to the unitventilator. Debris in the lines can damage the unit.

In All SystemsBe sure to install the control valve(s) on the correct unit ventilator.

Mixing of valves in the field can result in valves improperly sized forthe desired flow rate, which can result in poor operation and coilfreeze-ups. Install control valve so there is at least 2" (51mm)minimum clearance to remove the actuator from the valve body.

Be certain that the control valve is installed correctly, with itsorientation vertical. Install valves at least 5o off center.

Be certain that the control valves are installed with the properport orientation to provide proper flow and fail safe operation.Incorrect installation can result in improper unit operation,and/or the possibility of coil freeze-up.

With future servicing considerations in mind, use standard, field-supplied shut-off valves and union connections; this permits easyremoval of the coil or control valve if servicing is required. LocateIsolator valves below the floor level, to allow removal of the unit.

While brazing, have an extinguisher readily available. Wearappropriate eye and hand protection. Confirm all areas withshared ventilation have ample fresh air ventilation.

CAUTION!

WARNING!

CAUTION!

In Water SystemsAfter flushing piping adequately, so all debris is removed, fill the

system.

At initial operation, vent manually by unscrewing the vent plugone or two turns, figure 76. After venting, tighten the vent plugfirmly.

Water system under pressure. Keep face and body parts wellaway from vent.Unscrew the vent plug only one or two complete turns, andvent slowly. Water pressure can result in severe personal injury.

Figure 76 - Vent and Drain Plug

Unscrew the vent plug one ortwo turns to manually ventsystem.

Vent

WARNING!

Donut insulation seals must be installed for proper air flowthrough the coil.

CAUTION!

Drain Plug

Step 6 – Making Piping Connections


DX Coil

R

S

R

S

DX Coil

DX Coil

R

S

DX Coil

R

S

Coil Connections – Hot Water Coil Connections – Left end of unit

Figure 77 - 28" Room Projection from Wall Figure 78 - 217/8" Room Projection from Wall

Figure 79 - 195/8" Room Projection from Wall Figure 80 - 165/8" Room Projection from Wall


Notes:1. Water coil connections are 7/8" (22mm) female sweat and

terminate 9" (229mm) from the left end of the unit.2. All coils have the supply and return connections in the left hand

compartment.3. Piping connections are parallel flow through hot water coil.4. All dimensions are approximate.

*Shading indicates portion of unit wall sleeve recessed into wall opening

Room ProjectionWall

Left End ViewHeating Coils65 = 1-row Hot Water Coil66 = 2-row Hot Water Coil

S = SupplyR = Return

Room ProjectionWall

Room ProjectionWall

Room ProjectionWall

115/8"(295mm)

157/8" (403mm)

63/8" (162mm)

105/8"(270mm)

133/8"(340mm) 115/8"

(289mm)

22" (559mm)

173/4" (451mm)

93/8" (238mm)

135/8" (346mm)

133/8"(340mm)

115/8"(289mm)

133/8"(340mm)

115/8"(289mm)

133/8"(340mm)

115/8"(289mm)


Coil Connections – Steam Coil Connections – Left end of unit

R

S

R

S

R

S

R

S

Notes:1. Steam coil connections are 11/8" (29mm) female sweat and

terminate 9" (229mm) from the left end of the unit.2. All coils have the supply and return connections in the left hand

compartment.3. Steam coils have a factory installed pressure equalizing line which

terminates in a 1/2" (13mm) MPT fitting.4. All dimensions are approximate.

Figure 81 - 28" Room Projection from Wall Figure 82 - 217/8" Room Projection from Wall

Figure 83 - 195/8" Room Projection from Wall Figure 84 - 165/8" Room Projection from Wall

*Shading indicates portion of unit wall sleeve recessed into wall opening

135/8"(346mm)

Room Projection

155/8"(391mm)

137/8"(352mm) 95/8"

(245mm)

Wall

Left End ViewHeating Coils68 = Low Capacity Steam Coil69 = High Capacity Steam Coil

S = SupplyR = Return

71/2"(191mm)

91/4"(235mm)

137/8"(352mm) 95/8"

(245mm)

Room ProjectionWall

51/4"(133mm)

Room Projection

7"(178mm)

137/8"(352mm) 95/8"

(245mm)

Wall

21/4" (57mm)

4" (102mm)

137/8"(352mm) 95/8"

(245mm)

Room ProjectionWall



Steam End of Cycle ValveMicroTech II Face and Bypass Damper control unit ventilators

require a Direct Digital Controller (DDC), End of Cycle (EOC) valvefor each steam coil. End of Cycle (or two position) valves are eitherfull open to allow steam to flow through the coil or full closed to shutoff the steam flow.

Model AZS and AZQSteam End of Cycle Valve/Piping for MicroTechII™ with Face & Bypass

2-way End of Cycle, Normally Open, Steam Valve PipingThe 2-way End of Cycle steam valve is furnished normally open

to the coil. When the valve is de-energized (off) there is full flowthrough the coil. Energizing the valve reduces the steam flow in theEnd of Cycle fashion.

Refer to the End of Cycle valve label to determine the direction offlow. The valve should be installed so that there is a 2" (51mm)minimum clearance to remove the actuator from the valve body.

Provide unions for removal of unit coil and/or control valve as afuture service considerations.

Steam EOC valves are shipped separate from the unit ventilatoritself to help avoid shipping damage to the piping of the connectionstub from the weight of the valve, and to provide the installer withmaximum flexibility in making the field piping connection.

When using AAF MicroTech II controls, the End of Cycle valveaccessory must be field installed on the unit for which it was selected.

Valve Inlet Pressure Capacity (MBh) Capacity (Watts)2 psig (13.8 kPa) 43.9 128545 psig (34.5 kPa) 74.8 21924

*Based on 1150 Btu/lb. of steam Pressure Drop

Table 15. End of Cycle 2-way, Normally Open,Steam Valve (7.0 Cv)

Hot Water End of Cycle ValveMicroTech II Face and Bypass Damper control unit ventilators

require a Direct Digital Controller (DDC), End of Cycle (EOC) valvefor the hot water hydronic coil. End of Cycle (or two position) valvesare either full open to allow full water flow to the coil or full closedto shut off the water flow.

The optional factory-supplied AAF®-HermanNelson® ControlValve(s) for water applications can be either 2-way or 3-way type,and are shipped separate from the unit ventilator itself to help avoidshipping damage to the piping of the connection stub from the weightof the valve, and to provide the installer with maximum flexibility inmaking the field piping connection. Before proceeding, see figures85 through 95 as applicable, as well as the job-specific pipingdrawings.

Provide unions for removal of unit coil and/or control valve as afuture service considerations.

Valves and Piping – Typical

GPM of Water (L/s) 7 (0.44) 9.9 (0.62) 12.1 (0.76) 14 (0.88) 15.7 (0.99) 22.1 (1.39) 27.1 (1.71) 31.3 (1.98) 35.0 (2.20)WPD Ft. of H2O (kPa) 2.3 (6.9) 4.6 (13.8) 6.9 (20.7) 9.2 (27.6) 11.6 (34.5) 23.1 (69.0) 34.7 (103.4) 46.2 (138.0) 57.8 (172.4)

GPM = Gallons per Minute; WPD = Water Pressure Drop

Model AZS and AZQHot Water End of Cycle Valve/Piping forMicroTech II™ with Face & Bypass

Table 13 - 2-Way End of Cycle Valve Pressure Drop (7.0 Cv)

GPM of Water (L/s) 5 (0.32) 7.1 (0.45) 8.7 (0.55) 10 (0.63) 11.2 (0.71) 15.8 (1.00) 19.4 (1.22) 22.3 (1.41) 25.0 (1.58)WPD Ft. of H2O (kPa) 2.3 (6.9) 4.6 (13.8) 6.9 (20.7) 9.2 (27.6) 11.6 (34.5) 23.1 (69.0) 34.7 (103.4) 46.2 (138.0) 57.8 (172.4)

GPM = Gallons per Minute; WPD = Water Pressure Drop

Table 14 - 3-Way End of Cycle Valve Pressure Drop (5.0 Cv) Hot Water Valve Only (No Steam)



Mounting End of Cycle ValvesThe valves can be mounted in horizontal or vertical piping. When

installed in horizontal piping, the actuator must be above the valvebody. Refer to Figure 88. When installed in horizontal piping theactuator can be tilted left or right but it must not be tilted below 85o

from vertical.

Connection Cv X Y Z3⁄4"(19mm) FNPT 7.0 111⁄16" (43mm) 11⁄16" (23mm) 35⁄8" (92mm)

*1"(25mm) FNPT 7.0 17⁄8" (47mm) 1" (25mm) 311⁄16" (94mm)

* 1" valve for steam only

3-Way End-of-Cycle Valve Specifications

23⁄8"(61mm)

33⁄16"(81mm)

17⁄16"(37mm)

35⁄8" (92mm)

111⁄16"(43mm)

111⁄16"(43mm)

311⁄16" (94mm)

31⁄4" (83mm)11⁄4"

(32mm)

29⁄16" (66mm)7⁄8"diam.(22mm)

3⁄4"(19mm)

3⁄4"(19mm)

Figure 86 - 3-way EOC Valve Dimensions

Figure 88 - Mounting Position

Avoid locations where excessive moisture, corrosive fumes,explosive vapors, or vibration are present.Avoid electrical noise interference. Do not install near largeconductors, electrical machinery, or welding equipment.

Inspection of ValvesInspect the package for damage. If package is damaged, notify the

appropriate carrier immediately. Refer to page 4 for transportationdamage. If undamaged, open the package and inspect the device forobvious damage. Return damaged products.

Electrical shock hazard! Disconnect power before installationto prevent electrical shock or equipment damage.Make all connections in accordance with the electrical wiringdiagram and in accordance with national and local electricalcodes. Use Copper conductors only.

WARNING!

CAUTION!

Control 2 PositionElectrical 24 VAC, 50/60 Hz

Stroke Power Stroke 9 to 11 secondsSpring return 4 to 5 seconds

Ambient 32oF to 125oF (0oC to 52oC)

Table 16 - Actuator Specifications

Connections 3⁄4" FNPTStatic Pressure 300 psi (2100 kPa)

Close-Off Pressure 13 psi (90 kPa)

Temperature 32oF to 200oF (0oC to 93oC)

Table 18 - Valve Body Specifications - 2 or 3-Way Hot Water

Note:1. See label furnished on 2-way valve to determine direction of flow

through the valve.2. Adhere to the port orientation shown for the 3-way valve.3. For hot water applications, the 2-way valve furnished is normally

piped open to the coil.4. The 3-way valve is generally selected for diverting water back to

the return main, where a constant pump head pressure is required.6. All water coil stubs are 7/8" I.D. female sweat. Coil connections

terminate 9" (229mm) from the end of the unit. Hot waterconnections may be same end.

11⁄4"(32mm)

31⁄4" (83mm)

23⁄8"(61mm)

33⁄16"(81mm)

311⁄16

" (94mm) 29⁄16"(66mm)

3⁄4"(19mm)

7⁄8" diam.(22mm)

X

Z

3⁄4"(19mm)

2-Way End-of-Cycle Valve SpecificationsFigure 85 - 2-way EOC Valve Dimensions

Connections 1" FNPTStatic Pressure 300 psi (2100 kPa)

Close-Off Pressure 13 psi (90 kPa)

Temperature 32oF to 200oF (0oC to 93oC)

Table 17 - Valve Body Specifications - 2-Way Steam Valve

TB2 GND856

655

BLK

BLK

EOC Valve

V1 (Heating)

PW1

Locating Rib

PW2

PV1

PV2BLK

BLK

MicroTech IIBoard

BO-7Triac 15

Left End Compartment2-pin Valve Plug

Figure 87 - Typical EOC Valve 2-pin Plug Wiring

X

Y

Table 19. EOC Connection

856



End of Cycle (EOC) PipingThese valves must be piped so the paddle closes against the

direction of flow. Flow is from B to A. Refer to the appropriateapplication in Figure 89 & 90. When installing the actuator to anormally open valve, the actuator must be placed in the manuallyopen position by using the manual operating lever. The first time thevalve is operated electrically, the manual operating lever of theactuator will transfer to the automatic position. The manual operatinglever can be used to allow flushing of the system after installation.The valves are designed for application in closed hydronic heatingsystems. High levels of dissolved oxygen and chlorine found in opensystems may attack the valve materials and result in premature failure.

Threaded ConnectionApply Teflon tape to all but the last two threads of male pipe

thread. Hand screw the pipe into the valve, turning it as far as it willgo. Use a wrench to fully tighten the valve to the pipe. Do not overtighten or strip the threads.

Heating – Hot Water End of Cycle Valve PipingWhen piping the End of Cycle valve, refer to label to determine the

direction of flow. The valve should be installed so that there is a 2"(51mm) minimum clearance to remove the actuator from the valvebody. Provide unions for removal of unit coil and/or control valve asa future service consideration. Hot water connections will be oppo-site the Direct Expansion (DX) cooling coil connections to facilitatepiping. The End of Cycle valve accessory must be field installed onthe unit for which it was selected.

Coil Piping – TypicalMount heating valve actuators in an upright position above the

center-line of the valve body and should be piped normally open tothe coil. Two-position, end-of-cycle (EOC) valves used with faceand bypass damper controlled units may be positioned above thevalve body a maximum of 85o from the vertical (see Figure 88). Allcontrol valves are shipped loose to help avoid shipping damage to thepiping or the coil connection stub from the weight of the valve, andto provide the installing contractor with maximum flexibility inmaking the field piping connections. Refer to AAF®-HermanNelson®

factory instruction sheet shipped with the unit for port orientation anda piping schematic. Control valves must be installed on the units inwhich they are shipped. Indiscriminate mixing of valves among unitscan result in valves not properly sized for the desired flow rate.

2-way End of Cycle, Normally Open, Hot WaterValve Piping (typical)

The 2-way End of Cycle hot water valve is furnished normallyopen to the coil. When the valve is de-energized (off) there is fullflow through the coil. Energizing the valve shuts off the water flow.

Return

Return

Balancing and Shutoff Valve

Shutoff Valve

Supply

Supply

2-way EOCValve Unit Coil

Unions

A B

Figure 89 - 2-way EOC, Normally Open, Hot Water Valve Piping

Refer to the arrows on the modulating valve body to determinethe direction of flow. If the valve is mounted improperly, theunit will not operate properly and damage to the valve mayresult. Flow is from B to A.

CAUTION!

3-way End of Cycle, Normally Open, Hot WaterValve Piping (typical)The 3-way End of Cycle hot water valve is furnished normally opento the coil. When the valve is de-energized (off) there is full flowthrough the coil. Energizing the valve allows the water to bypass the coil.

Figure 90 - 3-way EOC, Normally Open, Hot Water Valve Piping

Figure 91 - Installing Actuator Body onto Valve assembly

Actuator and Valve Body AssemblySlowly latch the manual operating lever in the open, engaged

position (AG1 or AH1 only). Depress the release button (see Figure91). Align the body with the actuator to ensure the stem is insertedinto the large mating hole on the bottom side of the actuator. Engagethe actuator on the body and release the button.

Return

Return


Supply

Unit Coil

Union

Shutoff Valve

Supply

3-wayEOC Valve

Union

Bypass

AB

AB

Balancing Valve

Valve Detail

Valve Detail

Stem

ManualOperating

Lever

Manual Operating Lever

MatingHole

ReleaseButton

MatingHole

Release Button



Two-way, End of Cycle two-position valve (AAF-HermanNelson)

Union: Half attached to coil, half attached to valve

All piping, fittings and unions by others (not AAF-HermanNelson) except as

noted

Steam check valve and pressure equalizing line (AAF-HermanNelson)

Float and thermostaic steam trap (Others)

Supply and return coil connection and stub-up unions by others

Figure 95 - Face and Bypass With 2-way End-of-Cycle Valve- Same End Drain Connection (Piping Outside Unit EndCompartment)

12

13

4

67

14

9 10

14

S5 Sensor

Typical Steam Coil Piping - EOC Valve PipingFigure 94 - Face and Bypass With 2-way End-of-Cycle Valve- Same End Drain Connection (Piping Within Unit EndCompartment)

14

12

4

6

7

8

14

9

S5 Sensor

21

3

45

15

67

15

DescriptionsThree-way End of Cycle control valve (AAF®-HermanNelson®)

Coil air vent (AAF-HermanNelson)

Coil drain (AAF-HermanNelson)

Shut-off valve (Others)

Balancing Shut-off valve(s) (Others)

Supply

Return

Unions (Others)—Must disconnect below floor line

Typical Water Coil Piping - EOC Valve PipingFigure 92 - Face and Bypass With 3-way End-of-Cycle Valve(Piping Within Unit End Compartment)

Figure 93 - Face and Bypass With 3-way End-of-Cycle Valve(Piping Outside Unit End Compartment)

2

3

4

5

6 7

8

14

1

S5 Sensor

S5 Sensor

2

1

3

6

4

5

7

8

13

12

11

10

9

Typical EOC Piping Arrangements

15

14



Cv ConnectionRecommended

Flow Rates

0.73 1/2" (13mm) 2 GPM to 3 GPM (.13 L/s) to (.19 L/s)

1.8 1/2" (13mm) 2 GPM to 7 GPM (.13 L/s) to (.44 L/s)

4.6 1/2" (13mm) 5 GPM to 16 GPM (.32 L/s) to (1.0 L/s)

7.3 3/4" (19mm) 9 GPM to 20 GPM (.57 L/s) to (1.3 L/s)

Valve Size, A BC

in. N.O./N.C./Three Way 2-Way N.O. 2-Way N.C. Three-Way

1/2"3" 13/16" 1-9/16" 1-3/16" 8"

(76mm) (21mm) (39mm) (46mm) (203mm)

3/4" 3-7/32" 15/16" 1-5/8" 2-1/8" 8"

(81mm) (24mm) (41mm) (54mm) (203mm)

Hot Water Modulating Valve (MicroTech II)The unit ventilator control valve is expected to be able to vary the

quantity of water that flows through the coil in a modulating fashion.Any movement of the valve stem should produce some change in theamount of water that flows through the coil. Oversized control valvescannot do this. For example, assume that when the control valve isfully open, the pressure drop through the coil is twice as great as thedrop through the valve. In this case, the control valve must travel toapproximately 50% closed before it can begin to have any influenceon the water flow through the coil. The control system, no matter howsophisticated, cannot overcome this. Oversized control valves canalso result in “hunting” which will shorten the life of the valve andactuator and possibly damage the coil.

Table 23. 2-Way and 3-Way Modulating Valve Pressure Drop(Hot Water)

Normally Open (Stem Up) – Push Stem Down to CloseNormally Closed (Stem Up) – Push Stem Down to Open

Note: The actuator spring returns the valve to the stem upposition when the actuator is de-energized (off)

White/Brown (Stem Up)

Yellow (24 VAC Supply)

Brown (Stem Down)

White (Common)

Locating Rib

Figure 97 - Actuator Wiring

400 psig (2.756 ,PA) up to 150oFStatic Water (66oC) decreasing to 365 psig

Pressure (2,515 kPa) at 248oF (120oC)

Fluid Temperature 35 to 250oF (2 to 121oC)

Control Floating Point Modulating

Electrical 20 to 30 VAC at 50/60 Hz or 24 VDC ± 10%

Transformer 12 VA (class 2 power source)

Stroke 29/32 in. (23mm) max. 76 seconds

Spring Return 4 to 9 seconds at room temperature (stem up)

Operating Temperature 35 to 250oF (2 to 121oC)

Table 21. Valve Body Specifications

Table 20. Actuator Specifications

2-Way Hot Water Modulating Valve

3-Way Hot Water Modulating Valve

4-3/32"(104mm)

3-5/32"(80mm)

6-13/16"(173mm)

AB

C

3-19/32"(91mm)

11/32"(8mm)

4-3/32"(104mm)3-5/32"

(80mm)

6-13/16"(173mm)

A

B

C

3-15/16"(100mm)11/32"

(8mm)

Table 22. 2-Way and 3-Way Modulating Valve Dimensions


The modulating control valves for MicroTech II are designed toregulate the flow of hot water. They consist of a bronze body valvewith a spring return, floating point actuator. The optional valveaccessory is shipped separate from the unit ventilator for fieldinstallation to prevent shipping damage and to provide flexibility inmaking the field piping connection.

Figure 96 - 2-Way and 3-Way Modulating Valve Actuators

Hot Water Modulating Control Valve for MicroTechII - Model AZV, AZU, AZR

2-Way Modulating Valve 3-Way Modulating Valve


Return

Unions (Others)—Must disconnect below floor line (Fig. 92 & 94).

Two-way, End of Cycle two-position valve (AAF-HermanNelson) (Fig. 94 & 95).

Union: Half attached to coil, half attached to valve

All piping, fittings and unions by others (not AAF-HermanNelson) except as

noted

Supply and return coil connection and stub-up unions by others

DescriptionsThree-way End of Cycle control valve (AAF®-HermanNelson®) (Fig. 92 & 93).

Coil air vent (AAF-HermanNelson)

Coil drain (AAF-HermanNelson)

Shut-off valve (Others)

Balancing shut-off valve(s) (Others)

Supply

Hot Water Modulating Valve Piping

2-Way Modulating, Normally Open, Hot Water Valve Piping(typical)

The 2-way Modulating hot water valve is furnished normallyopen to the coil. When the valve is de-energized (off) there is fullflow through the coil. Energizing the valve reduces the volume ofwater flow in a modulating fashion.

3-Way Modulating, Normally Open, HotWater Valve Piping (typical)

The 3-way Modulating hot water valve is furnished normally opento the coil. When the valve is de-energized (off) there is full flowthrough the coil. Energizing the valve allows a varying amount ofwater to bypass the coil.

Return

Return


Shutoff Valve

Supply

Supply

3-wayModulating

Valve

Unit Coil

Union

Union

Balancing Valve

N.O.CommonN.C.

When piping the modulating valve, refer to the arrows on themodulating valve body to determine the direction of flow. The valveshould be installed so that there is a 2" (51mm) minimum clearanceto remove the actuator from the valve body. Provide unions forremoval of unit coil and/or control valve as a future service consid-eration. Hot water connections will be opposite the Direct Expansion(DX) cooling coil connections, to facilitate piping. The modulatingvalve accessory must be field installed on the unit for which it wasselected.

Figure 100 - 3-Way Modulating Valve Control (Piping OutsideUnit End Compartment)

2

3

4

5

6

7

1414

14

11

S5 Sensor

Refer to the arrows on the modulating valve body to determinethe direction of flow. If the valve is mounted improperly, the unitwill not operate properly and damage to the valve may result.Flow is from B to A.

CAUTION!

Figure 98 - 2-Way Modulating Valve Control, Normally Open,Hot Water

Figure 99 - 3-Way Modulating Hot Water Valve Control

2

1

3

6

4

5

Modulating valve size must be selected to provide properwater flow. In freezing conditions, water flow must bemaintained through the heating coil or a suitable freeze-prevention solution employed to prevent freeze-up.

CAUTION!

8

11

10

9

14

7

Return

Return

Balancing and Shut-off Valve

Shut-off Valve

Supply

Supply

2-wayModulating

Valve Unit Coil

Unions

AB

AB

A B



Valve Size,in. (DN) A B C

1/2 (DN15)3 13/16 8

(76) (21) (203)

3/4 (DN20) 3-7/32 15/16 8

(81) (24) (203)

1 4-1/8 1-5/32 9-7/32

(DN25) (119) (29) (234)

1-1/4 4-23/32 1-11/32 9-7/32

(DN32) (119) (34) (234)

Control Floating Point ModulatingElectrical 20 to 30 VAC at 50/60 Hz or 24 VDC ± 10%

Transformer 12 VA (class 2 power source)Stroke 29/32 in. (23mm) max. 76 seconds

Spring Return 4 to 9 seconds at room temperature (stem up)

Operating Temperature 35 to 250oF (2 to 121oC); 15 psig (103 kPa)saturated steam

Static 38 psig (262 kPa) Saturated steam at

PressureSteam

284oF

Fluid Temperature

35 to 250oF (2 to 121oC); 15 psig

(103kPa) saturated steam

The modulating control valves for MicroTech II are designed toregulate the flow of steam. They consist of a bronze body valve witha spring return, floating point actuator. The optional valve accessoryis shipped separate from the unit ventilator for field installation toprevent shipping damage and to provide flexibility in making thefield piping connection.

Figure 101 – 2-Way Modulating Valve ActuatorTable 26 - Valve Body Specifications

Table 25 - Actuator Specifications

2-Way Modulating Valve

Table 24 - 2-Way Modulating Steam Valve Dimensions

2-Way Steam Modulating Valve4-3/32"(104mm)

3-5/32"(80mm)

6-13/16"(173mm)

AB

C

3-19/32"(91mm)11/32"

(8mm)

Steam Modulating Control Valve for MicroTech II™

- Model AZU, AZV, AZR

CvConnectionFlow Rates

0.73 1/2" (13mm) FNPT

1.8 1/2" (13mm) FNPT

4.6 1/2" (13mm) FNPT

7.3 3/4" (19mm) FNPT

11 1" (25mm) FNPT

18.5 1-1/4" (32mm) FNPT

Table 27 - Modulating 2-Way, Normally Open, Steam Valve

Normally Open (Stem Up) – Push Stem Down to CloseNormally Closed (Stem Up) – Push Stem Down to Open

Note: The actuator spring returns the valve to the stem upposition when the actuator is de-energized (off)

White/Brown (Stem Up)

Yellow (24 VAC Supply)

Brown (Stem Down)

White (Common)

Locating Rib

Figure 102 - Actuator Wiring



Figure 105 - 2-Way Steam Modulating Valve Control - SameEnd Drain Connection (Piping Within Unit End Compartment)

13

12

4

6

7

8

14

11

S5 Sensor

In Steam Systems:The optional factory-supplied AAF®-HermanNelson® MicroTech

II™ Modulating Control Valve for steam applications is the 2-waytype. It is shipped separately from the unit ventilator to help avoidshipping damage, yet provide the installer with maximum flexibilityin making the field piping connection. Before proceeding, seeFigures 103 through 105, as well as the job-specific piping drawings.

For steam applications, the 2-way, angle pattern valve furnished isnormally piped open to the coil. All steam coils are 1-1/8" (34mm)female sweat connections. Coil connections terminate 9" (229mm)from the end of the unit.

Steam coils have a factory-installed pressure equalizing valve anda 24" (610mm) long pressure equalizing line that terminates in a1/2" M.P.T. fitting.

See Figure 103, 104 & 105. Connect the 1/4" (6.35mm) vacuumbreaker tube to the downstream return line. Make this connectiondownstream of the trap outlet.

See page 43 for numberdesignation descriptions.

Steam Modulating Valve PipingThe steam modulating control valve is expected to vary the

quantity of steam through the coil. Any movement of the valve stemshould produce some change in the steam flow rate.

The optional factory supplied AAF®-HermanNelson® MicroTechII™ 2-way Modulating steam valve is furnished normally open to thecoil. When the valve is de-energized (off) there is full flow throughthe coil. Energizing the valve reduces the steam flow in a modulatingfashion.

Refer to the arrow on the modulating valve body to determinethe direction of flow. If the valve is mounted improperly, theunit will not operate properly and damage to the valve mayresult.

The valve should be installed so that there is a 2" (51mm)minimum clearance to remove the actuator form the valve body.Provide unions for removal of unit coil and/or control valve as afuture service consideration.

Steam connections will be opposite the Direct Expansion (DX)cooling coils connection to facilitate piping. The modulating valveaccessory must be field installed on the unit for which it was selected.

Return

Shutoff Valve

Shutoff Valve

Supply

Return

Supply

Unit Coil

Equalizing Line

Steam Trap

Steam Trap (by Others)

CAUTION!

Union

Figure 103 - Typical 2-Way Steam Modulating Valve Piping

Figure 104 - Same End Connections

Control Valve: Install OnCenter Coil Connection

Vacuum Breaker(by AAF-HermanNelson)

Vacuum Breaker Tube(by AAF-HermanNelson)

1⁄4" Flare by 1⁄2" MPTHalf-Union and 1⁄4" Flare (by AAF-HermanNelson)

Tee (by Others)

Condensate Piping:AAF®-HermanNelson® cooling unit ventilators are designed for

condensate removal into a condensate disposal system. Do notconnect the unit drain connection so that condensate exits to theoutside and/or is exposed to freezing temperatures. Installer isresponsible for any damage that might be caused from freezingcondensate. In applications with an end compartment auxiliarydrain pan, see the installation instructions shipped with the auxiliarydrain pan itself.



Table 28a- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR

Model AZ Electrical Data – Size 024

Note:Shading indicates data for AZR units with electric reheat.

See Table 28a through 28g, and Figure 109 and the job-specificelectrical drawings before proceeding with field power and controlwiring. See also the wiring diagram provided on the unit ventilatorright front access panel.

Confirm the wiring and phase is correct. Running thecompressor backward will damage the compressor and voidthe warranty.

To avoid electrical shock, personal injury or death, be sure thatfield wiring complies with local and national fire, safety, andelectrical codes, and voltage to the system is within the limitsshown in the job-specific drawings and unit electrical dataplate(s).

Power supply to unit must be disconnected before making fieldconnections. To avoid electrical shock, personal injury ordeath, be sure to rigorously adhere to field wiring proceduresregarding proper lockout and tagout of components.

WARNING!

WARNING!

Procedure1. Confirm that the power to the wall sleeve is de-energized and

tagged-out.2. Verify that all wiring has been hooked up per step 4 beginning

on page 27-30. Details for MicroTech II controls are pages 50through 56, and electromechanical control pages 57 and 58.

3. Confirm that the unit SW1-Main Power non-fused “On-Off”switch is “Off.”

4. Provide power to the wall sleeve.5. Verify that the main power is correctly phased to the wall sleeve

and unit without closing SW1.

Step 7 – Unit Electrical and Control Connections

CAUTION!

Min Max RLA LRA Heater KW MCA

"F" Maximum

Fuse

2.2 2.0 9.8 56 - - 16.5 252.2 2.0 9.8 56 Low (3 elem.) 8.00 38.5 50.3 602.2 2.0 9.8 56 High (6 elem.) 16.00 76.9 98.3 1002.2 2.0 9.8 56 Low (3 elem.) 8.00 38.5 50.3 602.2 2.0 9.8 56 High (6 elem.) 16.00 76.9 98.3 1002.2 2.0 9.8 56 - - 16.5 252.2 2.0 9.8 56 Low (3 elem.) 7.31 31.8 42.0 452.2 2.0 9.8 56 High (6 elem.) 14.63 63.6 81.7 902.2 2.0 9.8 56 Low (3 elem.) 7.31 31.8 42.0 452.2 2.0 9.8 56 High (6 elem.) 14.63 63.6 81.7 902.2 2.0 6.7 51 - - 12.6 152.2 2.0 6.7 51 Low (3 elem.) 7.40 21.4 29.0 302.2 2.0 6.7 51 High (6 elem.) 14.80 42.7 55.6 602.2 2.0 6.7 51 Low (3 elem.) 7.40 21.4 29.0 302.2 2.0 6.7 51 High (6 elem.) 14.80 42.7 55.6 602.2 2.0 6.7 51 - - 12.6 152.2 2.0 6.7 51 Low (3 elem.) 7.31 18.4 25.2 302.2 2.0 6.7 51 High (6 elem.) 14.63 36.7 48.1 502.2 2.0 6.7 51 Low (3 elem.) 7.31 18.4 25.8 302.2 2.0 6.7 51 High (6 elem.) 14.63 36.7 48.1 501.1 1.1 3.5 25 - - 6.6 151.1 1.1 3.5 25 Low (3 elem.) 7.31 9.2 12.6 151.1 1.1 3.5 25 High (6 elem.) 14.63 18.4 24.1 251.1 1.1 3.5 25 Low (3 elem.) 7.31 9.2 13.2 151.1 1.1 3.5 25 High (6 elem.) 14.63 18.4 24.1 25

253207

414 506

Elec. Reheat

Elec. Reheat

Elec. Reheat

Compressor Heating Options

230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

230/60/1

200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

197 228 Elec. Heat208/60/1

Voltage Range

Volt/Hz/Ph Room Fan FLA

Outdoor Fan FLA Heat Type

Power Supply

HeaterAMPS


Table 28b- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR




Table 28c- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR




"F" Maximum

Fuse


Heat Type

253207

414 506

Room Fan FLA

Outdoor Fan FLA

Voltage Range Compressor Heating Options

230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

Elec. Reheat

Elec. Reheat

230/60/1

200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

None, HW, Stm

197 228 Elec. Heat208/60/1

None, HW, Stm

Elec. Reheat

Volt/Hz/Ph


"F" Maximum

Fuse

2.2 2.0 14.4 82 - - 22.2 352.2 2.0 14.4 82 Low (3 elem.) 8.00 38.5 50.3 602.2 2.0 14.4 82 High (6 elem.) 16.00 76.9 98.3 1002.2 2.0 14.4 82 Low (3 elem.) 8.00 38.5 50.3 602.2 2.0 14.4 82 High (6 elem.) 16.00 76.9 98.3 1002.2 2.0 14.4 82 - - 22.2 352.2 2.0 14.4 82 Low (3 elem.) 7.31 31.8 42.0 452.2 2.0 14.4 82 High (6 elem.) 14.63 63.6 81.7 902.2 2.0 14.4 82 Low (3 elem.) 7.31 31.8 42.0 452.2 2.0 14.4 82 High (6 elem.) 14.63 63.6 81.7 902.2 2.0 9.4 65.5 - - 16.0 252.2 2.0 9.4 65.5 Low (3 elem.) 7.40 21.4 29.0 302.2 2.0 9.4 65.5 High (6 elem.) 14.80 42.7 55.6 602.2 2.0 9.4 65.5 Low (3 elem.) 7.40 21.4 31.3 352.2 2.0 9.4 65.5 High (6 elem.) 14.80 42.7 55.6 602.2 2.0 9.4 65.5 - - 16.0 252.2 2.0 9.4 65.5 Low (3 elem.) 7.31 18.4 25.2 302.2 2.0 9.4 65.5 High (6 elem.) 14.63 36.7 48.1 502.2 2.0 9.4 65.5 Low (3 elem.) 7.31 18.4 29.2 352.2 2.0 9.4 65.5 High (6 elem.) 14.63 36.7 48.1 501.1 1.1 4.5 33 - - 7.8 151.1 1.1 4.5 33 Low (3 elem.) 7.31 9.2 12.6 151.1 1.1 4.5 33 High (6 elem.) 14.63 18.4 24.1 251.1 1.1 4.5 33 Low (3 elem.) 7.31 9.2 14.5 151.1 1.1 4.5 33 High (6 elem.) 14.63 18.4 24.1 25

207

414 506

Room Fan FLA

Voltage Range

Elec. Reheat

Elec. Reheat

Elec. Reheat

253230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

208/60/1

230/60/1

197 228 Elec. Heat

Volt/Hz/Ph

200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

Outdoor Fan FLA


Heat Type

Power Supply

HeaterAMPS

Power Supply

HeaterAMPS


Table 28d- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR




Table 28e- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR




"F" Maximum

Fuse

2.5 2.0 18.3 98 - - 27.4 452.5 2.0 18.3 98 Low (3 elem.) 10.00 48.1 62.6 702.5 2.0 18.3 98 High (6 elem.) 20.00 96.2 122.8 1252.5 2.0 18.3 98 Low (3 elem.) 10.00 48.1 62.6 702.5 2.0 18.3 98 High (6 elem.) 20.00 96.2 122.8 1252.5 2.0 18.3 98 - - 27.4 452.5 2.0 18.3 98 Low (3 elem.) 9.18 39.9 52.4 602.5 2.0 18.3 98 High (6 elem.) 18.35 79.8 102.3 1102.5 2.0 18.3 98 Low (3 elem.) 9.18 39.9 52.4 602.5 2.0 18.3 98 High (6 elem.) 18.35 79.8 102.3 1102.5 2.0 12.4 88 - - 20.0 302.5 2.0 12.4 88 Low (3 elem.) 9.25 26.7 35.9 402.5 2.0 12.4 88 High (6 elem.) 18.49 53.4 69.3 702.5 2.0 12.4 88 Low (3 elem.) 9.25 26.7 39.3 452.5 2.0 12.4 88 High (6 elem.) 18.49 53.4 69.3 702.5 2.0 12.4 88 - - 20.0 302.5 2.0 12.4 88 Low (3 elem.) 9.18 23.0 31.3 352.5 2.0 12.4 88 High (6 elem.) 18.35 46.1 60.1 702.5 2.0 12.4 88 Low (3 elem.) 9.18 23.0 36.5 402.5 2.0 12.4 88 High (6 elem.) 18.35 46.1 60.1 701.3 1.2 6.1 44 - - 10.1 151.3 1.2 6.1 44 Low (3 elem.) 9.18 11.5 15.7 201.3 1.2 6.1 44 High (6 elem.) 18.35 23.0 30.1 351.3 1.2 6.1 44 Low (3 elem.) 9.18 11.5 18.4 201.3 1.2 6.1 44 High (6 elem.) 18.35 23.0 30.1 35Elec. Reheat

Elec. Reheat

253207

414 506

230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

Elec. Reheat

208/60/1

Voltage Range

197 228 Elec. Heat


200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

230/60/1

None, HW, Stm

Outdoor Fan FLA


Heat Type


"F" Maximum

Fuse


Heat Type

253207

414 506

Room Fan FLA

Outdoor Fan FLA


230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

Elec. Reheat

Elec. Reheat

230/60/1

200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

None, HW, Stm

197 228 Elec. Heat208/60/1

None, HW, Stm

Elec. Reheat

Volt/Hz/Ph

Power Supply

HeaterAMPS

Power Supply

HeaterAMPS


Table 28f- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR





Table 28g- Electrical Data, Models AZS, AZQ, AZV, AZU, AZR



"F" Maximum

Fuse

3.1 6.8 21.2 132 - - 36.4 503.1 6.8 21.2 132 Low (3 elem.) 12.00 57.7 75.2 803.1 6.8 21.2 132 High (6 elem.) 24.00 115.4 147.4 1503.1 6.8 21.2 132 Low (3 elem.) 12.00 57.7 75.2 803.1 6.8 21.2 132 High (6 elem.) 24.00 115.4 147.4 1503.1 6.8 21.2 132 - - 36.4 503.1 6.8 21.2 132 Low (3 elem.) 11.04 48.0 63.1 703.1 6.8 21.2 132 High (6 elem.) 22.08 96.0 123.1 1253.1 6.8 21.2 132 Low (3 elem.) 11.04 48.0 63.1 703.1 6.8 21.2 132 High (6 elem.) 22.08 96.0 123.1 1253.1 6.8 14.7 91 - - 28.3 403.1 6.8 14.7 91 Low (3 elem.) 11.07 32.0 43.1 453.1 6.8 14.7 91 High (6 elem.) 22.14 63.9 83.0 903.1 6.8 14.7 91 Low (3 elem.) 11.07 32.0 51.4 603.1 6.8 14.7 91 High (6 elem.) 22.14 63.9 83.0 903.1 6.8 14.7 91 - - 28.3 403.1 6.8 14.7 91 Low (3 elem.) 11.04 27.7 37.7 403.1 6.8 14.7 91 High (6 elem.) 22.08 55.4 72.4 803.1 6.8 14.7 91 Low (3 elem.) 11.04 27.7 48.3 503.1 6.8 14.7 91 High (6 elem.) 22.08 55.4 72.4 801.3 3.0 7.1 50 - - 13.2 201.3 3.0 7.1 50 Low (3 elem.) 11.04 13.9 18.7 201.3 3.0 7.1 50 High (6 elem.) 22.08 27.7 35.9 401.3 3.0 7.1 50 Low (3 elem.) 11.04 13.9 23.2 251.3 3.0 7.1 50 High (6 elem.) 22.08 27.7 35.9 40Elec. Reheat

Elec. Reheat

253207

414 506

230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

Elec. Reheat

208/60/1

Voltage Range

197 228 Elec. Heat


200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

230/60/1

None, HW, Stm

Outdoor Fan FLA


Heat Type


"F" Maximum

Fuse

3.1 6.8 28.8 148 - - 45.9 703.1 6.8 28.8 148 Low (3 elem.) 12.00 57.7 75.2 803.1 6.8 28.8 148 High (6 elem.) 24.00 115.4 147.4 1503.1 6.8 28.8 148 Low (3 elem.) 12.00 57.7 75.2 903.1 6.8 28.8 148 High (6 elem.) 24.00 115.4 147.4 1503.1 6.8 28.8 148 - - 45.9 703.1 6.8 28.8 148 Low (3 elem.) 11.04 48.0 63.1 703.1 6.8 28.8 148 High (6 elem.) 22.08 96.0 123.1 1253.1 6.8 28.8 148 Low (3 elem.) 11.04 48.0 65.9 903.1 6.8 28.8 148 High (6 elem.) 22.08 96.0 123.1 1253.1 6.8 17.3 123 - - 31.5 453.1 6.8 17.3 123 Low (3 elem.) 11.07 32.0 43.1 453.1 6.8 17.3 123 High (6 elem.) 22.14 63.9 83.0 903.1 6.8 17.3 123 Low (3 elem.) 11.07 32.0 54.7 603.1 6.8 17.3 123 High (6 elem.) 22.14 63.9 83.0 903.1 6.8 17.3 123 - - 31.5 453.1 6.8 17.3 123 Low (3 elem.) 11.04 27.7 37.7 453.1 6.8 17.3 123 High (6 elem.) 22.08 55.4 72.4 803.1 6.8 17.3 123 Low (3 elem.) 11.04 27.7 51.5 603.1 6.8 17.3 123 High (6 elem.) 22.08 55.4 72.4 801.3 3.0 9.0 62 - - 15.6 201.3 3.0 9 62 Low (3 elem.) 11.04 13.9 18.7 201.3 3.0 9 62 High (6 elem.) 22.08 27.7 35.9 401.3 3.0 9.0 62 Low (3 elem.) 11.04 13.9 25.6 301.3 3.0 9 62 High (6 elem.) 22.08 27.7 35.9 40

Heat Type

253207

414 506

Room Fan FLA

Outdoor Fan FLA


230/60/3

460/60/3

None, HW, Stm

None, HW, Stm

None, HW, Stm

Elec. Heat

Elec. Heat

Elec. Heat

Elec. Reheat

Elec. Reheat

230/60/1

200/60/3

Elec. Reheat

Elec. Heat

Elec. Reheat

253207

180 220

None, HW, Stm

197 228 Elec. Heat208/60/1

None, HW, Stm

Elec. Reheat

Volt/Hz/Ph

Power Supply

HeaterAMPS

Power Supply

HeaterAMPS


MicroTech II Wiring Diagram – TypicalFigure 109 - Model AZ Direct Expansion / Hot Water Face & Bypass / Damper Control / 208/230 Volt/3 Phase

DIS

CO

NN

EC

T A

LL ELE

CT

RIC

AL

PO

WE

R B

EFO

RE

SE

RV

ICIN

G U

NIT

TO

PR

EV

EN

T IN

JUR

Y O

R D

EA

TH

DU

E T

O E

LEC

TR

ICA

L SH

OC

K.

DAN

GER

!

US

E C

OP

PE

R C

ON

DU

CT

OR

S O

NLY

.U

NIT

TE

RM

INA

LS A

RE

NO

T D

ES

IGN

ED

TO

AC

CE

PT

OT

HE

R T

YP

ES

OF

CO

ND

UC

TO

RS

.F

AILU

RE

TO

DO

SO

MA

Y D

AM

AG

E T

HE

EQ

UIP

ME

NT

.

CAU

TION

!

Refer to unit w

iring diagram located on inside of right front panel,

for actual wiring. Im

proper wiring can cause equipm

ent and propertydam

age.

CA

UT

ION

!

Wall S

leeve

Wall S

leeve

Wall S

leeve

Wall S

leeve

EO

C V

alve



MicroTech II™ Unit Mounted DDC Control ComponentsFigures 106 & 107 provide a top view of the unit and its components. Adescription of each component follows, by callout number.

1

2

7

9

10

12

116

Figure 106 - MicroTech II Sensor and Component Locations (Top View without LUI Panel Installed)

1413

15

17

18 19

16 20

1. MicroTech II Unit Ventilator Controller (UVC): (Located Be-neath the Local User Interface Panel). Factory mountedand run tested, microprocessor-based DDC control de-vice capable of complete, Stand-alone unit control, Mas-ter/Slave control or incorporated into a building-widenetwork using an optional plug-in communication module.The UVC contains a microprocessor that is pre-pro-grammed with the application code required to operatethe unit. The UVC supports up to 6 analog inputs, 12binary inputs, and 9 binary outputs. The UVC EXP I/Oboard supports up to 4 additional analog inputs and 8additional binary outputs. Master/Slave units have thecontroller factory configured and installed for a local peer-to-peer network between these units (network wiringbetween these units needs to be field installed). Optionalnetwork communication is provided via plug-in communi-cation modules that connect directly to the UVC.

2. Communication Module (optional):(Located Beneath the Local User Interface Panel). Plug-in network communication module that is attached to theUVC via a 12-pin header and 4 locking standoffs. Avail-able communication modules:

• Building Automation and Control Network (BACnet™) MasterSlave/Token Passing (MS/TP) - Allows the UVC to inter-operate with systems that use the BACnet (MS/TP) proto-col with a conformance level of 3. Meets the requirementsof ANSI/ASHRAE 135-1995 standard for BACnetsystems.

• LONWORKS™ compliant Space Comfort Controller (SCC) – Sup-ports the LONWORKS SCC profile number 8500-10.

• Metasys N2™ Open – Provides N2 Open network com-munication capability to the UVC.

3. Local User Interface (LUI): (see fig. 105, 106 & 107) The LUIprovides a unit mounted interface which indicates thecurrent unit operating state and can be used to adjust theunit ventilator operating parameters (operating mode,temperature set points, fan speed and occupancy mode).The LUI features a 2-digit display, 7 keys (1 key is hidden),and 9 individual LED indicators. See “Local User Inter-face” for further details.

4. Tenant Override Switch (see fig. 107) – Provides a momen-tary contact closure that causes the unit to enter the“tenant override” operating mode for a set time period(default = 120 minutes).

5. Time Clock (optional on stand-alone units only) (see fig. 107)– Factory mounted 7 day/24 hour, digital time clock withup to twenty (20) programs to sequence the unit ventilatorthrough occupied and unoccupied modes in accordancewith a user programmed time schedule.

6. External Signal Connection Plugs:(Located Beneath the Local User Interface Panel). Three(3) multi-pin plugs are factory provided and pre-wired withamp plug connections that plug into the wall sleeve.Provided for field wiring of :

• Remote Wall Mounted Temperature Sensor (optionalaccessory).

21

Outdoor Section

Indoor Section Motor LUI PanelLocation



Figure 107 - AZ Top Right Access View with LUI Panel Installed

• External Input Signals (by others): unoccupied, remoteshutdown, ventilation lockout, dew point/humidity (nighttime operation) or exhaust interlock signals.

• External Output Options (by others): lights on/off, faultindication signal, exhaust fan on/off or auxiliary heatsignal.

Note: Not all external signal options can be used simulta-neously and may not be available on all software mod-els. Refer to the “UVC Input and Output Tables” in IM739 for available options.

7. Motor speed transformer: (Located Beneath the Local UserInterface Panel). Multi-tap auto-transformer provides mul-tiple fan motor speed control through the LUI.

8. Unit Main Power “On-Off” Switch (not shown): Shipped withthe wall sleeve accessory, the “On-Off” switch discon-nects the main power to the unit for servicing or when theunit is to be shut down for an extended period of time.

9. Fuse(s) - Fan motor and controls have the hot line(s)protected by factory installed cartridge type fuse(s).

10. Control Transformer - (Located Beneath the Local UserInterface Panel). 75 VA 24-volt NEC Class 2 transformerfor 24 volt power supply.

11. Outdoor Air/Return Air Damper Actuator - Direct coupled,floating point (tristate) actuator that spring returns theoutdoor air damper to the closed position upon a loss ofpower.

12. Face and Bypass Damper Actuator - Direct coupled, floatingpoint (tristate) actuator that is non-spring returned (Mod-els AZS and AZQ only).

13. Hydronic Coil Low Air Temperature Limit (T6 freezestat) –Factory installed on all units with hydronic (water) coils.The T6 freezestat cuts out at 38oF (+/- 3oF) and automati-cally resets at 45oF (+/- 3oF).

14. Indoor, Direct Expansion (DX) Coil Refrigerant TemperatureSensor – The sensor is installed on the unit ventilator’sindoor refrigerant coil on the right hand side of the coil “u-bend”. It is used to sense low refrigerant temperatures onthe indoor coil.

15. Outdoor, Direct Expansion (DX) Coil Refrigerant TemperatureSensor - The sensor is installed on the unit ventilator’soutdoor refrigerant coil on the right hand side of the coil “u-bend”. It is used to sense the refrigerant temperature onthe outdoor coil.

16. Room Temperature Sensor - The unit mounted sensor islocated in the sampling chamber (front, center section)where room air is continuously drawn through for promptresponse to temperature changes in the room. A RemoteWall Mounted Temperature Sensor is also available forremote room temperature sensing. (optional accessory).

17. Discharge Air Temperature Sensor – The sensor is locatedon the second fan from the right to sense discharge airtemperatures.

18. Outdoor Air Temperature Sensor – The sensor is located inthe outdoor air section of the unit before the outdoor airdamper. With network applications, the unit mountedsensor can be overridden by a remote sensor through thenetwork.

19. Outdoor Air Humidity Sensor (optional) - Unit mounted hu-midity sensor for units using Expanded outdoor enthalpyeconomizer or Leading Edge indoor/outdoor, true en-thalpy comparison economizer. The sensor is located inthe outdoor air section of the unit before the outdoor airdamper. With network applications, the unit mountedsensor can be overridden by a remote sensor through thenetwork.

20. Room Humidity Sensor (optional) – Unit mounted humiditysensor for units capable of passive or active dehumidifi-cation (Reheat) or with units using Leading Edge indoor/outdoor, true enthalpy comparison economizer. Thesensor is located in the sampling chamber (front, centerpanel) where room air is continuously drawn through forfast response to humidity changes in the room. Withnetwork applications, the unit mounted sensor can beoverridden by a remote sensor through the network.

21. CO2 Sensor (optional) – Unit mounted, single beam absorp-tion infrared gas sensor with a sensing range of 0 – 2000ppm and voltage output of 0 to 10 VDC (100 ohm outputimpedance). The Pitot Tube sensing device is located inthe unit ventilator’s return air stream. The optional CO2

sensor is used with the UVC’s Demand Control Ventila-tion feature to vary the amount of outside air based onactual room occupancy. With network applications, theunit mounted sensor can be overridden by a remotesensor through the network.

22. Control Valve(s) (not shown) – Optional accessory valve(s)may be either 2 position “End of Cycle” (AZS and AZQmodels) or modulating (AZV and AZU models), to controlthe quantity of water through the coil. Available in 2-wayor 3-way configurations. Spring return actuators arerequired for all hot water and steam heating valves. Allheating valves are Normally Open (NO).

5

43Motor


MicroTech II™ Control Components


Figure 108 - Local User Interface (LUI)

MicroTech II TM

FAN ONLY

COOL

HEAT

AUTO

HIGH

MED

LOW

AUTO

FUNC

ON/STOP

FANMODE

Economizer Control Capabilities• Basic – Compares the inside and outside air temperature

using item 16 (Room Temperature Sensor) and item 18(Outdoor Air Temperature Sensor) to determine if outdoorair can be used for “free”, economizer cooling operation.

• Expanded – Compares the inside and outside air tempera-ture using item 16 (Room Temperature Sensor) and item18 (Outdoor Air Temperature Sensor) and calculates theenthalpy of the outside air relative humidity using item 19(Outdoor Air Humidity Sensor) to determine if outdoor aircan be used for “free”, economizer cooling operation.

• Leading Edge – True enthalpy comparison economizer thatcompares the inside and outside air temperature usingitem 16 (Room Temperature Sensor) and item 18 (Out-door Air Temperature Sensor) and compares the enthalpyof the inside and outside air relative humidity using item 19(Outdoor Air Humidity Sensor) and item 20 (Room Humid-ity Sensor) to determine if outdoor air can be used for“free”, economizer cooling operation.

Economizer for Reheat (Model AZR)• Basic – Uses item 16 (Room Temperature sensor), item 18

(Outdoor Air Temperature Sensor) and item 20 (RoomHumidity Sensor) for active dehumidification (reheat) or todetermine if outdoor air can be used for “free”, economizercooling operation.

• Leading Edge – Uses item 16 (Room Temperature Sensor),item 18 (Outdoor Air Temperature Sensor), item 19 (Out-door Air Humidity Sensor) and item 20 (Room HumiditySensor) for active dehumidification (reheat) or to deter-mine if outdoor air can be used for “free”, economizercooling operation.

Local User Interface (LUI)The built-in LUI touch pad (See Figure 108) has a 2-digit LEDdisplay that indicates the current unit operating state. Thetouch pad will “digitally display”:

• The room set point temperature• Current Room Temperature (With certain buttons held in

place)

• Any fault code for diagnostics at the unit (With certainbuttons held in place)

The LUI has a built in menu structure (Hidden Key andPassword protected) with 7 keys (1 key is hidden) and 9individual LED indicators to adjust the unit ventilator operatingparameters as described below.

Operating Mode States (4)• Heat - Heating and economizer operation only

• Cool – Cooling and economizer operation only• Fan Only – Fan operation only

• Auto – Unit automatically switches between heating,cooling and economizer operation to satisfy the room loadconditions. The current unit state is also displayed.

Fan States (4)• High (constant speed)

• Medium (constant speed)

• Low (constant speed)• Auto (part load, variable air) – Varies the fan speed

automatically to meet the room load conditions whetherthe unit is in heating, cooling or economizer mode. Thecurrent fan speed is also displayed. During low load ornormal operation (about 60% of the time) the fans willoperate at low speed. When the load increases to anintermediate demand the fans automatically shifts tomedium speed. At near design or design load conditions,the fans will operate on high speed. A 10-minute delaybetween speed changes is incorporated to minimize theawareness of these changes. The outdoor air damper willindex based on the fan speed to maintain the requiredminimum cfm (cubic feet per minute) of ventilation air.

Occupancy Modes (4)• Occupied – Normal, daytime operation where the unit

maintains the room set point.

• Unoccupied – Night set back operating mode in whichthe unit responds to a new room set point and cycles tomaintain the condition. The fan comes on when heatingor cooling is needed and runs until the load is satisfied.The outside air damper is closed during this mode. Whena cooling load is satisfied by the refrigerant system, thecompressor is de-energized and the Unit Ventilator indoorfan continues to run for a fixed period of time to removepossible frost buildup on the evaporator coil.

• Stand By Mode – The unit ventilator maintains the standby mode set point temperature with the outside air damperclosed. The fan runs continuously unless it is configuredto cycle in response to the room load.

• Bypass Mode – By depressing the Tenant OverrideSwitch (Item 4) the unit is placed back into the OccupiedMode for a predetermined time (default of 120 minutes).This time can be set in 1-minute increments from 1 minuteto 240 minutes through the Service Tool or a network.


MicroTech II™ Control Components


Rigorously adhere to field wiring procedures regarding properlockout and tagout of components.

InstallationIf it is determined that a Remote Wall-Mounted Sensor is to be

used, follow proper sensor location procedures.This describes the installation of the following three wall mounted

sensor models:• P/N 111048101 – Basic• P/N 111048103 – Expanded ± 3oF setting• P/N 111048102 – Deluxe 54oF to 85oF settingUse the installation instructions included with the Remote wall sensor.

Parts Included - All Models• pre-assembled sensor that includes:

- large (50.8 x 101.6 mm [2 x 4 in.]) mounting base (1)- terminal block (1)- 1.5 mm (1/16 in.) cover screw (1)- end-caps (2)

• alternate small (80 x 80 mm [3.15 x 3.15 in.]) mountingbase (1) with attached terminal block (1)

• cover slider insert with printed logos for McQuay® (1)and AAF® (1)

• No. 6-32 x 1 in. flat-head screw (2)• No. 8 x 1.25 in. pan-head tapping screw (2)• hollow plastic wall anchor (2)

Parts Included - 111048102 and 111048103 Only• alternate serrated setpoint dial (attached)• smooth setpoint dial (separate)

Special Tools Needed• .5 mm (1/16 in.) Allen wrench• 7 mm (1/4 in.) flat-blade screwdriver• hole saw with 35 mm (1-3/8 in.) blade (for surface mounting only)• drill with 8 mm (5/16 in.) drill bit (for surface mounting only)

WARNING!

MicroTech II™ Remote Wall Mounted Sensor

WARNING!To avoid electrical shock, personal injury or death:

1. Installer must be qualified, experienced technician.2. Disconnect power supply before installation to prevent

electrical shock and damage to equipment.3. Make all connections in accordance with electrical wiring

diagrams, and in compliance with national and localcodes. Use copper conductors only.

4. Do not exceed ratings of the device. This is a low voltagedevice: Never apply more than 12VAC/VDC to any lead ordamage will result.

5. Avoid locations where excessive moisture, corrosivefumes, or vibrations are present.

Window Exposure

Window Exposure

Window

Exposure

Interior Wall

Interior Wall

Interior WallInterior Wall

Unit

Unit

= Correct Sensor Location

Figure 111 - Correct Wall Sensor Locations

Note:Avoid placing wall sensor near drafty areas such as doors orwindows. Avoid external walls, or dead spots near exposedcolumns. Avoid direct sunlight on wall sensor.

Window Exposure

Window Exposure

Interior Wall

Interior Wall

Window Exposure

Unit

Unit

Interior Wall

Interior Wall

Window Exposure

Cubicle Wall

Shelving

File Cabinet

Shelving

Figure 112 - Incorrect Unit and Wall Sensor Locations

Figure 110 - Basic Remote Wall Sensor

LED

Tenant Override Button

Sensor

= Incorrect Sensor Location



6. Rotate the mounting base until one of the arrows on thebase points up. If necessary, reposition the cover screwabove the arrow. Place the base against the wall, and mark thescrew holes using the base as a template.

7. Drill two 8 mm (5/16 in.) holes at the markings.8. Insert the hollow plastic wall anchors (Figure 115), position

the base, and then drive the two pan-head tapping screws.9. Pull the wiring through the mounting base.10. Remove terminal block and wire to the appropriate terminals as

shown in “Wiring”.

11. Install terminal block onto sensor with terminal 6 next to theedge of sensor.

12. Replace the sensor and tighten the cover screw.13. Replace the two end-caps on the mounting base.

Figure 115 – Insert Wall Anchors

Performing Surface Mounting Using Small Base

To perform surface mounting using the small base (Figure 116):1. Slide the desired cover slider insert onto the sensor until it snaps

into place.2. Remove the two end-caps from the mounting base.3. Remove the cover screw using a 1.5 mm (1/16 in.) Allen

wrench and discard it. Remove the sensor.4. Remove and discard the terminal block from inside the sensor.5. Drill a 35 mm (1-3/8 in.) hole in the surface where the sensor will

be mounted.6. Pull the cable or wiring through the hole.7. Place the small base against the wall (with the arrow on

the base pointing up) and mark the screw holes using thebase as a template.

IMPORTANT

Figure 114 – Surface Mounting Using Large Base

The MicroTech II Wall-Mounted Sensor allows for two mountingmethods: wall-box mounting and surface mounting.

Note: Wall-box mounting requires the large mounting base.Use either the large or small mounting base for surface mounting.

Performing Wall-box Mounting

To perform wall-box mounting (Figure 113):1. Slide the desired cover slider insert onto the cover until it

snaps into place.2. Remove the two end-caps from the mounting base.3. Loosen the cover screw using a 1.5 mm (1/16 in.) Allen

wrench and remove the sensor.4. Pull the cable or wiring through the wall-box and mounting base.5. Rotate the mounting base until one of the arrows on the

base points up and the screw openings in the base alignwith the threaded holes in the wall-box. If necessary, repositionthe cover screw above the arrow.

6. Fasten the base to the wall-box with the No. 6-32 x 1 in.screws provided.

7. Remove terminal block and wire to the appropriate terminals asshown in ”Wiring”.

9. Replace the sensor and tighten the cover screw.10. Replace the two end-caps on the mounting base.

Figure 113 – Wall-box Mounting

Performing Surface Mounting Using Large BaseTo perform surface mounting using the large base (Figure 114):1. Slide the desired cover slider insert onto the sensor until it snaps

into place.2. Remove the two end-caps from the mounting base.3. Loosen the cover screw using a 1.5 mm (1/16 in.) Allen

wrench and remove the sensor.4. Drill a 35 mm (1-3/8 in.) hole in the surface where the sensor will

be mounted.5. Pull the cable or wiring through the hole.

IMPORTANT

8. Install terminal block onto sensor with terminal 6 next to theedge of sensor.

Mounting MicroTech II™ Remote Wall MountedSensor



MicroTech II™ Wiring

Figure 116 – Surface Mounting Using Small Base

NOTICE

Terminal Block on 111048101 Sensor

Shielded cable should always be used. It is the responsibility ofothers to determine what constitutes an “electrically noisy”environment for each installation. Refer to table 28 for maximumwire length.

Figure 118 – 111048102 (Deluxe) and 111048103 (Expanded)Sensor Wiring

Maximum Wire Length for Less Than 1oF ErrorWire Gauge Wire Length

14 AWG 800 Ft.16 AWG 500 Ft.18 AWG 310 Ft.20 AWG 200 Ft.22 AWG 124 Ft.

Table 29 – Maximum Wire Length

Setup and Adjustments

Switching Setpoint Dials

To switch setpoint dials:1. Remove the sensor from the mounting base.2. Rotate the smooth setpoint dial so that it points straight up.3. As shown in Figure 119, insert the Allen wrench through the hole

in the back of the printed wiring board (A) and push gently untilthe smooth setpoint dial is free.

4. Press the serrated setpoint dial into place on the sensor,making sure that the dial points straight up.

5. Replace the sensor on the mounting base.

Repairs and ReplacementNo repair options available. Call your local AAF-McQuayrepresentative for sensor replacement.

Figure 119 – Removing the Standard Setpoint Dial

8. Drill two 8 mm (5/16 in.) holes at the markings.9. Insert the hollow plastic wall anchors (Figure 115), position

the base, and then drive the two pan-head tapping screws.10. Pull the wiring through the mounting base.11. Wire to the appropriate terminals to the small mounting

base as shown in “Wiring”.12. Snap the sensor into the small mounting base (cover screw is not

required).

All MicroTech II equipped unit ventilators are provided as standardwith a unit mounted space temperature sensor. The unit mountedtemperature sensor is provided with a quick disconnect plugwhich can be located using the unit electrical schematic. Whenusing a remote wall-mounted temperature sensor, the unitmounted temperature sensor quick disconnect plug must bedisconnected from the UVC.

Figure 117 – 111048101 Sensor Wiring (Basic)

NOTICE

Allen wrench hole

Setpoint dial



Figure 120 - Thermostat Control, Hot Water or Steam Heating, 208/230V - 1 Ph, 200/460V - 3 Ph

Electro Mechanical Control Components - Model AZV, AZU, AZR

Wal

l Sle

eve

Plu

g fo

rN

ight

Con

trol

s



Figure 121 - Remote Mounted Room Air Sensor - Auto or Manual Changeover, One Stage AZ Units

Electro Mechanical Control Components - Model AZV, AZU, AZR

To Wall Sleeve Plug (4-pin)

Night Control Wiring Diagram



Top End Cap Left End

Top

Top End Cap Right End

Attach Through Unit orUtility Cabinet. Right orLeft End.

Front End CapRight End

Attach to Unit. Right or Left End

Attach to Utility Cabinet. Right or Left End

Use for Filling Hole in Utility Cabinet

Attach to Unit. Right or Left End

Attach to Utility Cabinet. Right or Left End

Use for Filling Hole in Utility Cabinet

Attach Through Unit or Utility Cabinet. Right or Left End.

Kickplate

Front

Front End Cap Left End

Attach to WallRight or Left End

A

Filler sections are furnished in 18" lengths and are provided withenough hardware to assemble one right-hand and one left-hand fillerhaving a combined length of 18" or less. The minimum length of one

Attach Through Guide Channel into Top

TopRear Top Support

Top SupportRight Hand

Attach Through Unitor Utility CabinetRight or Left End

Attach Through TopSupport into Top

Top Support Left End

Attach to WallRight or Left End

filler after cutting is 3". The Filler section may be used between acabinet and the wall, between a unit and the wall, between unit andcabinets, or between cabinets.

Figure 122 – 18" Wall Filler Section Details

Figure 123 – 18" Wall Filler Section (Formica Top) Details

Available Depths

A 165/8" 195/8" 217/8" 28

Table 30 – Wall Filler Sections

Wall Filler Section (Formica Top)

18" Wall Filler Section Assembly

A

Step 8 – Installing Wall Filler, Spacer, End Panel


Spacers may be installed between cabinet and unit componentsor as the exposed end piece. Refer to Figure 124. If used as the

Remove debris, dust, dirt, and any obstruction from the areain front of the return air intake grille at the floor (approximately3' - see shaded area) as this will affect unit performance

Figure 125 - Cabinet(s) meeting unit ventilator (refer to the instructions specific to the installation, included with the cabinets).

Fit Front Alignment Bar Into WeldedNotches Permitting Alignment Of StorageAccessories With The Unit Ventilator

Adjustable Kick PlateAnd Leg Levelers

Alignment Slot

Cabinet Assembly

Figure 124 – 12" Utility Compartment Details

12" Spacer Assembly

Front Alignment Bar(See Detail in Fig. 125)

1/4"-20 x 1/2" Screws – Metal Top1/4"-20 x 31/2" Screws – Formica Top

1/4" Nuts

Textured Metal Top

1/4" Nuts

1/4"-20 x 1/2" Screws – Metal Top1/4"-20 x 31/2" Screws – Formica Top

exposed end piece, a 1" end panel is required and installed asexplained in Step 9 – Installing End Panels (page 62).


CAUTION!


27 7/8"(708mm)

27 7/8"(708mm)

7"(178mm)

2 1/2"(64mm)

1"(25mm)

27 7/8"(708mm)

18"(457mm)

4"(102mm)

1"(25mm)

27 7/8"(708mm)

22"(559mm)

4"(102mm)

1"(25mm)

16 5/8"(422mm) 1"

(25mm)

27 7/8"(708mm)

28"(711mm) 1"

(25mm)

27 7/8"(708mm)

22"(559mm)

4"(102mm)

1"(25mm)

27 7/8"(708mm)

27 7/8"(708mm)

7"(178mm)

2 1/2"(64mm)

1"(25mm)

27 7/8"(708mm)

22"(559mm)

4"(102mm)

1"(25mm)

27 7/8"(708mm)

18"(457mm)

4"(102mm)

1"(25mm)

27 7/8"(708mm)

27 7/8"(708mm)

7"(178mm)

2 1/2"(64mm)

1"(25mm)

27 7/8"(708mm)

22"(559mm)

4"(102mm)

1"(25mm)

27 7/8"(708mm)

18"(457mm)

4"(102mm)

1"(25mm)

19 5/8"(498mm) 1"

(25mm)

21 7/8"(556mm) 1"

(25mm)

16 5/8"(422mm)

6"(152mm)

28"(711mm)

19 5/8"(498mm)

21 7/8"(556mm)

6"(152mm)

6"(152mm)

6"(152mm)

27"(686mm)

3" (76mm)

27"(686mm)

3" (76mm)

27"(686mm)

3" (76mm)

27"(686mm)

3" (76mm)

165/8" (422mm) DeepEnd Panels


Top View

End Viewwith 4" x 18"

(102mm x457mm)Cut-out

End Viewwith 21/2" x 7"


End ViewWith NoCut-out

End Viewwith 4" x 22"


Figure 126 – 1" (25mm) and 6" (152mm) End Panel Dimensions – Self-Contained Floor Unit Ventilators

Top View

End ViewWith NoCut-out

6" (152mm) End Panel Dimensions – Self-Contained Floor Unit Ventilator

All Dim.in Inches


28" (711mm) DeepEnd Panels

End Panel Dimensions

Dashed lines indicate kickplate



Piping Stub-up Within Cabinet

Unit End Compartment

Piping Stub-up Within 6" End Panel End Panel 6"

Application and Dimension

Wall Line 111⁄2

103⁄4

Left Endof unit(Less end panel)

Note: Space available in left endcompartment for piping stub-up.Stub-up, including unions and shutoffvalves, must disconnect below floorline for unit installation and removal.

1

Space available at left end of unitfor piping stub-up when 6" endpanel is used.

Left End of unit(Less end panel)

Wall Line

4

1

Unit End Compartment

6

All dimensions in inches

Figure 127 - Piping Stub-Up Details, 6" End Panel

End Panel AssemblyAccessory end panels are shipped separately with hardware and

kickplate.

The final step of unit installation is attaching the end panels. Endpanels are required unless the unit has adjoining matching cabinets.

1. Refer to Figure 128 for a 1" thick end panel. Attach two (2)Tinnerman nuts to the top edge of the end panel and two (2) to thebottom end of the unit. Align the end panel with the front and topedges of the unit. Insert through upper mounting holes inside unitend compartment and thread into tinnerman clips on the endpanel. Attach the end panel to the unit using four (4) 5/32" hexsocket head fasteners provided.

Figure 128 – 1" End Panel Figure 129 – 6" End Panel with Provided Hardware

BracketYC1934

End

of

Uni

t2. Refer to Figure 129 for 6" thick end panel.

a. Position bracket (YC1934) on wall so angle is 5" fromend of unit and near bottom.

b. Mark and drill required hole for device to fasten bracketto wall (not included).

c. Attach the bracket to wall.d. Attach two (2) Tinnerman nuts to the top edge of the end

panel and one (1) to the bottom front of the end frame.e. Align the end panel with the front and top edges of the unit.

Attach end panel to the unit using three (3) 5/32 " hex socket

head fasteners provided. Bracket should prevent movementof panel toward the unit when pressure is applied to the endpanel.

6" End Panel

1/4"-20 Tinnerman Nut,Clip on End Panel

1/4"-20 x 1/2" Screw & 1/4" Flat Washer

5"

1/4"-20 Tinnerman Nut,Clip over Lower Hole inUnit Corner Bracket

Tinnerman Nut,Clip on End Panel

1" End Panel

1/4"-20 x 1/2" Screw1/4"-20 Tinnerman Nut, Clip overLower Hole in Unit Base

165/8" UnitProjection 1/4"-20 x 1/2" Screw



VentiMatic™ Shutter AssemblyThe AAF®-HermanNelson® VentiMatic Shutter Assembly is a

one-way shutter. It is a continuously variable, gravity-actuated,room exhaust vent that operates in direct response to positive staticpressure, opposing any airflow into the room resulting in a slightpositive pressure.

When mounting the VentiMatic Shutter(s) on the wall louver,make sure that all moving parts are unobstructed and placed leveland plumb for proper operation. If an optional steel interior wallgrille is furnished, install as shown in Figure 133.

For large units, two VentiMatic Shutters may be mounted side byside on the same louver (Figure 132).

Figure 130 – Typical VentiMatic™ Shutter Assembly Installation

Louver

Outside

Roomside

Typical VentiMatic louver installation with shelving.

Outside

Roomside

VentiMatic Shutter Assembly

Building Wall

Step 9 – Installing VentiMatic™ Shutter

Table 31 - Recommended Wall Openings For VentiMaticWall Louvers

Recommended Maximum Number of VentiMatic

Wall Openings VentiMatic Shutters Shutter(s)B C For Wall Louvers Which Can Be Mounted Air Capacity

On Standard Louver MaximumLength Height 24" Shutter 36" Shutter cfm L/s

24" 27" 241⁄2" 107⁄8"(610) (659) (622) (267) 1 0 500 236

36" 39" 361⁄2" 107⁄8"(914) (991) (927) (267) 0 1 750 354

48" 51" 481⁄2" 107⁄8"(1219) (1295) (1232) (267) 2 0 1000 472

60" 63" 601⁄2" 107⁄8"(1524) (1600) (1537) (267) 1 1 1250 590

72" 75" 721⁄2" 197⁄8"(1829) (1905) (1842) (495) 0 2 1500 708

Aluminum Wall LouverAssembly With Bird Screen(See Note 1)

B(see table 31)

SteelVentiMaticShutterAssembly

41⁄8"(105mm)

237⁄8" (606mm)or

357⁄8" (911mm)

2" (51mm)

103⁄8"(264mm)

3" (76mm)

Figure 131 - Single VentiMatic Shutter & Wall Louver

Outside

▲

Aluminum Wall LouverAssembly with Bird Screen

(See Note 1) 3'' (76mm)

VentiMaticShutterAssembly

Center Cover

103⁄8"(264mm)

Figure 132 - Two VentiMatic Shutters & Wall Louver

B(see table 31)

Outside

▲

For proper operation, the VentiMatic shutter assembly mustbe mounted on the same wall as the unit ventilator louvers toneutralize wind effect.

CAUTION!

The VentiMatic shutter assemblymounts on the same wall as the unitventilator louvers, to neutralize windeffect.

Roomside

Roomside


Turn off unit before servicing to avoid danger of injury fromrotating fans.

Post Installation Checklist� Unit securely fastened to wall sleeve

� Electrical hook-up complete; power, control, wall ther-mostat (if applicable) in accordance with unit wiringdiagram(s)

� Air filter clean and in place

� All access and end panels in place and protective cover-ing removed

� No debris, dust, dirt, or obstructions exist in front of thereturn air intake grille at the floor

� All installation work has been completed in accordancewith applicable local, state and national codes

� Room air fan shaft bearing oiled

� Unit square and level and running smoothly and quietly

� No air infiltration

� Paint nicks and scratches touched up (as required)

� Access space provided for maintenance, service and unitremoval

� Shipping carton replaced over unit for protection

� Owner or maintenance personnel provided with a copy ofthis manual and other manuals/documents shipped withthe unit.

� Owner or maintenance personnel instructed on properoperation and maintenance

Motor manufacturer recommends not oiling the room fanmotor.

NOTICE

Figure 135 – Fan Shaft Bearing Oil Cup

Room Air Fan Shaft Bearing

Left Front Access Panel

Step 9 – Installing VentiMatic™ Shutter

Figure 133 - Louver, VentiMatic Shutter, Interior Wall GrilleDetails, Dimensions

As DirectedBy Architect

3⁄4" (19mm) Approx.

7"(178mm)

Cement Mortar

Steel Interior Wall Grille(Optional) See Note 3

125⁄8"(314mm)

3⁄4" (19mm) Approx.

BirdScreen

Do Not Block Drain HolesWith Caulk or Mortar

NotLess

Than 9"(229mm)

Cement Mortar

C(see table 31)

Note:1. Horizontal blade wall louver shown. Vertical blade wall louver

also available.2. The optional exterior grille shown mounted on the wall louver.3. The optional steel interior wall grille is used to conceal the

interior wall opening whenever the Ventimatic shutter is notlocated behind shelf cabinets. Hardware to mount the interiorwall grille is not included.

OilingDo not attempt to operate the unit fans until the room air fan shaft

bearing has been oiled.Condenser motor and fan shaft bearings are permanently lubricated.Access to fan shaft bearing is through left top access door. Use a

high grade SAE 20 or 30 nondetergent oil. A few drops are sufficient.Do not over oil. Refer to Figure 135 for the oil point.

Filter(s)AAF®-HermanNelson® single-use filters are standard on all but

electric heat units, which come with permanent wire mesh filters.Permanent wire mesh and renewable media filters are available fornon-electric heat units in lieu of single-use filters.

• Single-use filters feature Amerglas media. They are designed tobe used once and discarded.

• Permanent filters are metal filters that may be removed forcleaning and reused numerous times.

• Renewable media filters (figure136) consist of a heavy paintedmetal structural frame and renewable Amerglas media.

Step 10 – Prepare Unit Ventilator for Start-up

WARNING!


Step 11 – Complete Check, Test and Start Procedure

Renewable Media(Single-use andPermanent WireMesh Filters AlsoAvailable.)

Provide completed Check, Test and Start form to your localAAF®-HermanNelson® representative and specifying engineer forverification that proper start-up was completed.

The form is enclosed in the manila envelope located behind the leftfront access door.

Units must have a filter installed when operating. Operationwithout a filter can compromise unit performance due to buildup of dust and dirt on components.

Turn off the unit (fan speed switch or unit on/off switch is locatedbehind the right front end compartment panel). Remove the centerfront panel, pull out the filter and replace with a clean filter. Replacethe center panel and restart the unit.

Filters should be replaced during the first week of placing intoservice to prevent dirt carry-over into the internals of the unit andback into the classroom (see figure 136). A periodic filter changeoutprogram should be established. Filters should be checked monthly ormore often if conditions indicate. Filters are included in all units.

Dirty or clogged filters can impact unit performance, anddamage the unit.

Filter

Motor

Figure 136 - Filter Installation

CAUTION!

Electric heat units should ONLY use permanent wire meshfilters. Filters other than wire mesh are not intended for electricheat units, and can cause unit damage, property damage orpersonal injury.

CAUTION!

CAUTION!

Installer/Owner’s ResponsibilityProtect your investment - read carefully

Your AAF-HermanNelson express written limited warranty doesnot cover equipment failures that are caused by misuse, abuse, mis-installation, failure to maintain the unit, etc. The followingexamples, but not limited too, are not covered by warranty:

1. Damage resulting from handling during transportation orinstallation.

2. Damage to compressor resulting from improper electrical phasehook up.

3. Progressive damage to unit from failure to check and test atstart-up.

4. Damage to electronic or electrical components from incorrector fluctuating power supply, stray static electricity, or buildingautomation network inputs.

5. Inaccessibility of unit for service or parts installation thatprevents proper equipment operation.

6. Damage to aluminum coils and electronic controls, etc., resultingfrom operating the unit while building maintenance cleaningagents are in use.

7. Damage resulting from freezing water or condensate, inadequateor interrupted water supply, use of corrosive water,rearrangement of unit piping system, fouling or restriction ofthe water circuit by foreign material.

8. Damage caused by not cleaning or replacing filters.9. Damage resulting from failure to keep evaporator coil and

intake clean.10. Damage caused by accident, alteration of the unit design or

tampering.

Please complete and return the Check, Test and Start documentimmediately to protect your warranty.

1. Before proceeding, inspect the fan system, to verify that all partsare aligned properly and move freely. Inspect fans and fandischarge area for obstructions. Verify that power has beendisconnected. Rotate the fan assembly manually. Check that aclean filter is installed and the area in front of unit ventilator isfree of debris (figure 125, page 60). All panels should be in placeand properly fastened. Check for outdoor air leaks andcondensation. Verify that the coil section is properly sealed usingthe insulating foam donuts supplied.

2. After the unit ventilator has been properly installed, activate unitelectrical power and applicable hot water/steam/refrigerant systems.

3. Using the applicable control, activate the unit ventilator.Depending on the operating mode selected, the dampers, fans,and other components should operate as needed.

4. Run the unit ventilator for ten minutes, listening and observing.Fans should be operating correctly and rotating in the properdirection, without unusual noise. Likewise, the unit should befree of sheet metal rattles and / or unusual noises. All panelsshould be in place and properly fastened. Check for air leaks andcondensation. Compressor should run without noise. If noisy,check electrical phases to verify that the compressor is rotatingcorrectly. Phase reversal can damage the compressor and voidthe warranty.

Step 10 – Prepare for Start-up

Remove debris, dust, dirt, and any obstruction from the areain front of the return air intake grille at the floor.

CAUTION!

Page 66 / IM 789 Self-Contained Unit Ventilator

E1 = Expanded Stand-Alone w/o TCE2 = Expanded Stand-Alone Master w/o TCE3 = Expanded Stand-Alone Slave w/o TCE4 = Expanded BACnet MS/TP w/o TCE5 = Expanded LonMark SCC w/o TCE6 = Expanded Metasys N2 Open w/o TCE7 = Expanded Stand-Alone w/ TCE8 = Expanded Stand-Alone Master w/ TCE9 = Expanded Stand-Alone w/o TC w/CO

2

EA = Expanded Stand-Alone Master w/o TC w/CO2

EB = Expanded Stand-Alone Slave w/o TC w/CO2

EC = Expanded BACnet MS/TP w/o TC w/CO2

ED = Expanded LonMark SCC w/o TC w/CO2

EE = Expanded Metasys N2 Open w/o TC w/CO2

EF = Expanded Stand-Alone w/ TC w/CO2

EG = Expanded Stand-Alone Master w/ TC w/CO2

L1 = Leading Stand-Alone w/o TCL2 = Leading Stand-Alone Master w/o TCL3 = Leading Stand-Alone Slave w/o TCL4 = Leading BACnet MS/TP w/o TCL5 = Leading LonMark SCC w/o TCL6 = Leading Metasys N2 Open w/o TCL7 = Leading Stand-Alone w/ TCL8 = Leading Stand-Alone Master w/ TCL9 = Leading Stand-Alone w/o TC w/CO

2

LA = Leading Stand-Alone Master w/o TC w/CO2

LB = Leading Stand-Alone Slave w/o TC w/CO2

LC = Leading BACnet MS/TP w/o TC w/CO2

LD = Leading LonMark SCC w/o TC w/CO2

LE = Leading Metasys N2 Open w/o TC w/CO2

LF = Leading Stand-Alone w/ TC w/CO2

LG = Leading Stand-Alone Master w/ TC w/CO2

44 = Electromech w/2-Pos Damper for Remote T'Stat45 = Electromech w/2-Pos Damper w/Unit Mtd. ACO46 = Electromech w/2-Pos Damper w/Unit Mtd. MCO47 = Electromech w/RA/OA Damp w/o Actuator for Remote

T'Stat

10. DischargeAL = 16-5/8" Unit, Top Bar Grille Discharge

11. Return Air (RA) / Outside Air (OA)22 = RA Bottom Front / OA Rear Duct Collar

12. Power ConnectionG = Box w Switch

13. ColorB = Putty BeigeG = Soft GrayI = Antique IvoryW = Off White

14. SKUB = Standard DeliveryC = Extended Delivery

15. Product Style2

Field-Installed Accessories may accompany Unit Ventilator(s), ormay be shipped separately. These may include: Aluminum Louvers;Aluminum Grilles; Auxiliary Drain Pans; Caster Kit; End Panels;Spare Filters; MicroTech II Remote Wall Sensors (temperature);End of Cycle DDC Valve; Modulating DDC Valves. See instructionsshipped with accessories and install according to these and the plans.

1. Product CategoryU = Unit Ventilator

2. Product Identifier*AZS = SC - a/c Face & Bypass HeatingAZQ = SC - a/c Face & Bypass Heating, Ultra QuietAZV = SC - a/c Valve HeatingAZU = SC - a/c Valve Heating, Ultra QuietAZR = SC - a/c Valve Reheat

3. Design Series5 = E Design

4. Nominal Capacity, cubic feet per minute (cfm)024 = 24,000 Btuh030 = 30,000 Btuh036 = 36,000 Btuh040 = 40,000 Btuh044 = 44,000 Btuh048 = 48,000 Btuh054 = 54,000 Btuh

5. Voltage, volts, phase, Hertz (v-Hz-ph)B = 200-60-3C = 208-60-1G = 230-60-1J = 265-60-1D = 208-60-3H = 230-60-3K = 460-60-3

6. Cooling OptionsG = Direct Expansion (DX)H = Direct Expansion (DX) with refrigerant relief valve

7. Heating Options00 = None12 = Low Electric Heat, 3-element13 = High Electric Heat, 6-element65 = 1-row, Hot Water66 = 2-row, Hot Water67 = 3-row, Hot Water68 = Low Capacity Steam69 = High Capacity Steam

8. Hand Orientation [Right (RH) Left (LH)]E = LH Heating, RH CoolingZ = Not applicable

9. Controls (TC = Time Clock, CO2 = CO2 Sensor)B1 = Basic Stand-Alone w/o TCB2 = Basic Stand-Alone Master w/o TCB3 = Basic Stand-Alone Slave w/o TCB4 = Basic BACnet MS/TP w/o TCB5 = Basic LonMark SCC w/o TCB6 = Basic Metasys N2 Open w/o TCB7 = Basic Stand-Alone w/ TCB8 = Basic Stand-Alone Master w/ TCB9 = Basic Stand-Alone w/o TC w/CO

2

BA = Basic Stand-Alone Master w/o TC w/CO2

BB = Basic Stand-Alone Slave w/o TC w/CO2

BC = Basic BACnet MS/TP w/o TC w/CO2

BD = Basic LonMark SCC w/o TC w/CO2

BE = Basic Metasys N2 Open w/o TC w/CO2

BF = Basic Stand-Alone w/ TC w/CO2

BG = Basic Stand-Alone Master w/ TC w/CO2

Field 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Model U AZS 5 024 B G 65 Z B1 AL 22 G B C 2

Table 32 - Unit Ventilator (Floor Type) Data Plate - Specific Information


Glossary of Related Terms

PreliminaryAllen Wrench

5/32" tool used with hex fasteners on unit ventilator front accesspanels and top access doors.

AZ Unit VentilatorThe AZ self-contained unit ventilator provides comfort cooling andheating to the classroom, using an outside coil to reject the heat fromcooling. The unit also brings in outside air.

BACnet®

(Building Automation and Control Network) An ASHRAE andANSI Standard 135-1995: A standard data communication protocolfor building automation and control networks.

Condenser CoilA coil for removing heat from refrigerant gas for the purpose ofcausing the refrigerant gas to condense to a liquid.

“D” SealThe horizontal gasket or seal on the wall sleeve cross channel thatpositively contacts the unit condensing section to help prevent airand water leaks from entering the room.

End of Cycle Valve (EOC)The 2-way End of Cycle valve is normally open to the coil. When thevalve is de-energized (off) there is full flow through the coil.Energizing the valve reduces the flow in the End of Cycle fashion.

Evaporator CoilA coil in which a refrigerant gas is evaporated for the purpose ofextracting heat from the surrounding medium resulting in cooling ofthe air passing over the coil.

Face and Bypass DampersA damper arranged to direct the air through an indoor heating coil,around the indoor coil, or partly through and partly around the indoorcoil in any desired proportion, in response to control demand.

Full ProjectionThe self-contained unit ventilator wall sleeve anchors to the interiorwall surface with no recess into the wall opening, requiring an11-3/8" finish collar. The unit/wall sleeve combination projects a full28 inches from the room wall.

Full RecessThe self-contained unit ventilator wall sleeve is fully recessed intothe wall opening, not requiring a finish collar, and the unit projectsinto the room 16-5/8".

GrilleThe grille is a decorative cover to the louver. The grille openings lineup with the louver openings to maximize the air flow.

LintelA horizontal beam across the top of a door, window, louver or wallsleeve opening that supports the weight of the structure above it.

LONWORKS®

An enabling technology for creating inter-operable control net-works. Developed by Echelon Corporation. Utilizes nodes (Neu-rons) that communicate with a standard protocol (LonTalk®) accord-ing to agreed upon guidelines (LONMARK®).

LouverThe louver is to bring in adequate amounts of outdoor air for thecondenser fan section and ventilation air to the classroom whileproviding a path for heated condenser air and to minimize waterentering.

MicroTech II™Direct Digital Control system providing comfort and unit protection,with Protocol Selectability™, allowing easy integration into existingBuilding Automation Systems (BAS) using open, standard protocols.

Modulating ValveModulating control valve varies the quantity of water that flowsthrough the hot water heating coil in a modulating fashion.

N2 Open Standard Data CommunicationA network communication protocol for building automation andcontrol networks.

Partial RecessThe self-contained unit ventilator wall sleeve is partially recessedinto the wall opening, requiring either a 3" or 5-1/4" finish collar.

Reciprocating CompressorA compressor which raises pressure from a low to high pressure gasby means of reciprocating pistons.

Remote SensorA remote wall mounted device that senses room air temperatures andcommunicates with the unit ventilator.

Scroll CompressorA scroll compressor uses an oscillating motion to raise the refrigerantfrom a low pressure to a higher pressure.

SplittersHorizontal Air Splitters function as partitions between the condenserdischarge section, condenser supply air section and the outside roomair section. They are required to provide proper air paths and preventair recirculation when there is a space between the wall sleeve and thelouver.

Wall SleeveThe Wall Sleeve is used to secure the unit, provide a watertight andairtight seal between the building and the unit. In additionn, it bringsin electrical and control wiring (if required) and allows fast installa-tion of the unit.

©2006 McQuay International • www.mcquay.com • 800-432-1342 IM 789 Self-Contained Unit Ventilator (10-06)

®

Index – Alphabetical ListingAActuator, End of Cycle Valve (EOC) ..................................... 38-41Air Splitters, Unit Room Projection & Splitter Length Details .. 21Air Splitters, Recessed Wall Sleeve – Mounting and SealingSplitters to Wall Sleeve & Louver Applications ......................... 23Air Splitters, Full Projection – Sealing Wall Sleeveand Horizontal Splitters ............................................................... 25

BBrazing .......................................................................................... 35

CControl Valve (Hot Water - Modulating Valve) .................... 42-43Control Valve (Steam - Modulating Valve) ........................... 44-45Control Components, MicroTech II Unit Mounted Direct DigitalControl (DDC) (Locations & Descriptions) ........................... 51-53

EElectrical Connection Procedure (Wall Sleeve) ..................... 27-30Electrical Stub-up Details (Wall Sleeve) .................................... 28Electrical Terminals (Wall Sleeve Junction Box ) ................. 29-30Electrical & Unit Control Connections .................................. 56-58Electrical Data Tables ............................................................. 46-49End Panels (Dimensions) ............................................................. 61

HHot Water End of Cycle Valve (EOC) (General). ...................... 38Hot Water End of Cycle (2 or 3-way EOC Specifications) ........ 39Hot Water End of Cycle Piping ................................................... 40

IInstalling Wall Filler, Spacer, & End Panel ............................ 59-62Installing Louver ...................................................................... 10-17Installing Floor Unit, Wall Sleeve, & Louver Illustration (Typical) ......................................................................................... 6Installing The Unit Ventilator ................................................. 31-34Installing VentiMatic Shutter .................................................. 63-64Installing Wall Sleeve .............................................................. 18-26

LLifting, Moving, and Stacking ........................................................ 4Louver (Installation Considerations) ............................................ 11Louver (Installation Methods) ................................................. 15-17Louvers (Receiving) .................................................................... 4-5Louver Details .............................................................................. 10Louver and Grille Details ............................................................ 10

PPartial or Full Recess ................................................................... 14Piping (Making Connections) ................................................. 35-37Piping (Typical EOC Arrangements) ................................. 41 & 43Post Installation Checklist ........................................................... 64Pre-Installation Checklist ............................................................ 31Procedure for Start-up .................................................................. 65Position the Unit Ventilator ......................................................... 32Product Identifier (Data Plate Specific Information) .................. 66

RReceiving Handling & Storage ...................................................... 4Remote Wall Sensor (MicroTech II) ...................................... 54-56Removing Unit from the Skid ..................................................... 32

SSafety Information ......................................................................... 3Self-contained Floor Unit Assembly (Typical) ............................. 6Sensor Wiring Diagram ............................................................... 58Spacer Assembly 12" ................................................................... 60Stacking Component Cartons ........................................................ 5Start-up ......................................................................................... 65Storage of Equipment .................................................................... 4Steam Coil Connections .............................................................. 37Steam End of Cycle Valve (EOC) (General) .............................. 38

TTop Plan Views ....................................................................... 13-14Transportation Damage .................................................................. 4

WWall Filler Section (18" Assembly) ............................................ 59Wall Opening Procedure ............................................................. 7-9Wall Sleeve Details ...................................................................... 18Wiring Diagram (MicroTech II -Typical) ................................... 50

Warranty

All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including LimitedProduct Warranty. Consult your local McQuay Representative for warranty details. Refer to Form933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.

This document contains the most current product information as of this printing. For the most up-to-dateproduct information, please go to www.mcquay.com.

Products Manufactured in an ISO Certified Facility.

Documents

AAF -HermanNelson Classroom Self-Contained Unit Ventilator ...mcquayservice.com/bizlit/literature/lit_at_uv/IMOM/IM_789_AZ.pdf · Installation Manual IM 789 Group: Unit Ventilator