PAE 3 TO 5 TON PACKAGE AIR - Carrier · PAE 3 TO 5 TON PACKAGE AIR Rated in accordance with ARI Standard 210. Installation Instructions Single Package Air Conditioners 2 1. Unit Dimensions

Printed in U.S.A. 513 01 1703 003/7/05

1. Unit Dimensions 2. . . . . . . . . . . . . . . . . . .

1. Safety Labeling And Signal Words 3. .

2. Safe Installation Requirements 3. . . . .

3. Locating the Unit 4. . . . . . . . . . . . . . . . . .

4. Electrical Wiring 7. . . . . . . . . . . . . . . . . . .

5. Air Distribution System 9. . . . . . . . . . . . .

6. Economizer Accessory 10. . . . . . . . . . .

7. Start--up Procedures 11. . . . . . . . . . . . . .

8. Operation 14. . . . . . . . . . . . . . . . . . . . . . .

9. Maintenance 15. . . . . . . . . . . . . . . . . . . . .

10. Rigging Instructions 17. . . . . . . . . . . .

Contents

PAE 3 TO 5 TON PACKAGE AIR

Rated in accordancewith ARI Standard 210.

Single Package Air ConditionersInstallation Instructions

2

1. Unit Dimensions

ROOF CURBS ARE ALSO AVAILABLE IN 8"(203) AND 24"(610) HEIGHTS (K DIMENSION).

UNIT BASE SHOWN SEPARATELYTO ILLUSTRATE BOTTOMDUCT OPENINGS

DIM. INCHES MILLIMETERS

A

B

C

D

E

F

G

H

I

J

K

L

M

N

P

Q

R

S

DIM. INCHES MILLIMETERS

A

B

C

D

E

F

G

H

I

23"

23"

12"

23"

UNIT DIMENSIONS

1203

1854

25 & 31

584

584

64

584

305

80-10-14

"C"

"B"

"A"

"I"

"E"

"G"

"D"

"F"

"J"

"H"

"L"

"N"

"R"

"S"

"Q"

"P"

"M"

J

K

12" 305

14" 356

SUPPLY

RETURN

"G""F" "H"

"K"

’D"

"E""C"

"B""A"

"J"

"I"

"T"

T

ELECTRIC HEAT POWER1’ , 1-1/2" , 2" CONDUIT

LOW VOLTAGE1/2" CONDUIT

UNIT ELECTRICAL POWER3/4" , 1" , 1-1/4" CONDUIT

9-1/86

5-5/8

1-3/4

3-1/2

4-5/8

36"

73"

15"

12"

12"

4"

19"

15"

19"

47-3/8"

4-5/8"

18-3/4"

18-3/4"

1 & 1-1/4"

4-1/4"

5-1/4"

12-1/4"

12-1/4"

16-7/8"

914

117

381

307

476

476

305

102

108

133

311

483

381

483

311

429

67-3/4"

64-3/4"

2-1/2"

42-3/4"

39-3/4"

1645

1721

1086

1010

Note: Above dimensions are in inches.

ROOF CURBMODELS:

PAAA47 - PAAA60

MODELS:

PAAA47 - PAAA60

* Roof curbs are also available in 8� (203mm) and 24� (610mm) heights (K dimension).

ELECTRIC HEAT POWER1�, 1--1/2�, 2� CONDUIT

UNIT ELECTRICAL POWER3/4�, 1�, 1--1/4� CONDUIT

ALL MODELS

ROOF CURBALL MODELS

N/A N/A

Single Package Air Conditioners Installation Instructions

3

1. Safety Labeling And Signal Words

DANGER, WARNING AND CAUTION

The signalwordsDANGER,WARNING andCAUTION areused to identify levels of hazard seriousness. The signalword DANGER is only used on product labels to signify animmediate hazard. The signal wordsWARNING andCAU-TION will be used on product labels and throughout thismanual and other manuals that may apply to the product.

SIGNAL WORDS

DANGER -- Immediate hazards which WILL result in se-vere personal injury or death.

WARNING -- Hazards or unsafe practices which COULDresult in severe personal injury or death.

CAUTION -- Hazards or unsafe practices which COULDresult in minor personal injury or product or property dam-age.

Signal Words in Manuals

The signal wordWARNING is used throughout thismanualin the following manner:

WARNING!

The signal wordCAUTION is used throughout this manualin the following manner:

! CAUTION

2. Safe Installation Requirements

Installation or repairs made by unqualified per-sons can result in hazards to you and others.Installation MUST conform with local buildingcodes or, in the absence of local codes, with theNational Electrical Code NFPA70 or current edi-tion or inCanada CSAC22.1 -- CanadianElectricalCode Part 1 or current edition.

Failure to carefully read and follow all instruc-tions in thismanual can result in unitmalfunction,property damage, personal injury and/or death.

The information contained in this manual is in-tended for use by a qualified service technicianfamiliar with safety procedures and equippedwith the proper tools and test instruments.

!� Seal supply and return air ducts.

� Check to see that filters are installed correctly andare the proper type and size.

NOTE: It is the personal responsibility and obligation of thecustomer to contact a qualified installer to ensure that theinstallation is adequate and conforms to governing codesand ordinances.


4

3. Locating the Unit

The unit is designed for outdoor installation only. The unitmay be installed on a concrete slab (or other adequate plat-form) at ground level, or on a rooftop with an adequate plat-form or a roof curb. Typical installations are shown inNO TAG through NO TAG.

FIGURE 1 Minimum Clearances

48�

Clearances

The location MUST allow for minimum clearances andshould not be adjacent to a patio or other area where theunit�s operating sound level might be objectionable. Localcodes MUST be observed.

Minimumclearances, as specified belowand inFIGURE 1,MUST be maintained from adjacent structures to provideadequate air circulation and room for service personnel.

While minimum clearances are acceptable for safety rea-sons, they may not allow adequate air circulation aroundthe unit for proper operation in the cooling mode. Whenev-er possible, it is desirable to allow additional clearance, es-pecially around the condenser inlet and dischargeopenings.

Do NOT install the unit in a location that will permit dis-charged air from the condenser to recirculate to the con-denser inlet.

CAUTIONDo NOT operate unit in a corrosive atmosphere con-taining chlorine, fluorine, or anyother corrosive chem-icals.

Minimum Clearances to CombustibleConstruction

Supply and Return Air Ducts 0�. . . . . . . . . . . . . . . . . . . . . .

Duct Connection Side (no economizer)

Duct Connection Side (with economizer) 48� (1220mm).

Condenser Access Panel Side 30� (762mm). . . . . . . . . .

Blower Access Panel Side 30� (762mm). . . . . . . . . . . . . .

Electrical Access Panel Side 30� (762mm). . . . . . . . . . . .

Clearance between 3 Ft. Overhang

and Top of Unit 30� (762mm). . . . . . . . . . . .

Combustible Base

(Wood or Class A, B or C

roof covering material) 0�. . . . . . . . . . . . . . . . .

Access PanelsCAUTION

Unit will NOT operate properly without all access pan-els in place.

SeeFIGURE 2 below for a general view of unit and locationof access panels.

Access PanelsFIGURE 2

Compressor AccessPanel

Electrical AccessPanel

Blower Access Panel


5

InstallationNOTE:

Unit will NOToperate properly unless it is installed lev-el front to rear and side to side.

The slope MUST NOT be greater than 1/8� per foot(10mmpermeter). For side to side leveling, the controlbox side MUST always be lower.

Ground Level Installation

Ground level platform requirements:

-- The unitMUST be situated to provide safe access forservicing.

-- Platformmay bemade of either concrete or pressuretreated wood andMUST be level and strong enoughto support unit weight.

-- Position platform separate from building foundation.

-- Install in well--drained area, with top surface of plat-form above grade level.

-- Platform MUST be high enough to allow for propercondensate trap installation and drainage. SeeFIGURE 4 and associated text for more informationabout condensate drainage.

Rooftop Installation

Rooftop platform requirements:

-- The unitMUST be situated to provide safe access forservicing.

-- The existing roof structure MUST be adequate tosupport the weight of the unit or the roofMUST be re-inforced.

Check the weight of the unit in relation to the roofstructure and local building codes or ordinances andreinforce roof structure if necessary. See rigging onthe back cover of this manual for unit weights andcorner weights.

-- Support for the unit MUST be level and strongenough to carry unit weight. The support may consistof a platform or a combination of platform and roofbeams or curb.

The platformmay be constructed of pressure treatedwood and may be covered with Class A, B or C roofcovering.

-- Platform MUST allow for proper condensate trapinstallation and drainage. See FIGURE 4 and asso-ciated text for more information about condensatedrainage.

-- See Hoisting section below for hoisting instructions.

NOTE: Cardboard covers on horizontal supply and re-turn duct openings MUST be removed before startingunit.

Hoisting

NOTE:All access panelsMUST be secured in place beforehoisting.

The unit should be hoisted with two lifting slings. Attach theslings to rigging shackles that have been hooked throughholes in the base rail.

Two spreader bars MUST be placed on top of the unit toprotect the unit from damage from the pressure exerted bythe slings. Make sure that all equipment is adequate tohandle the weight of the unit and that the slings will not al-low the unit to shift.

Refer to NO TAG on the back cover of this manual forillustrated rigging instructions and weight chart.


6

Downflow ConversionThese units are shipped ready for horizontal operation butare adaptable to downflow use. To convert to downflowuse, follow these steps:

1. Remove the blockoff plates found in the return aircompartment and the supply air compartment (seeFIGURE 3.

NOTE: Blockoff plate in the supply air compartment onlycontains one screw. If reinstalling plate, back part of plateMUST fit into mating dimples on flange. To reinstall, slantplate into dimples, then put plate into position and fastenwith screw.

2. Install the removed plates on the horizontal returnand supply air openings.

NOTE: It is the installer�s personal responsibility to followall local codes and ordinances and instructions containedherein, as well as instructions included with accessoryitems when installing unit. It is the installer�s personal re-sponsibility to locate directions for installation of this unitand any or all accessories. Manufacturer is NOT responsi-ble for improper installation practices.

3. Install unit on the appropriate roof curb.

FIGURE 3Blockoff Plate

(Return Air Compartment)

Screw

BlockoffPlate

Condensate Drain

The condensate drain outlet is a 3/4� (19.1mm) threadedfemale PVC connection located at the bottom of the unit tothe left of the electrical access panel (seeFIGURE 4). Con-densate drain outlet MUST be held with wrench wheninstalling trap and drain line.

The circulating blower and the condenser fan create a neg-ative pressure on the condensate drain line that will pre-vent the condensate from draining properly without a trap.To combat this negative pressure, a field supplied conden-sate trap that will allow a standing column of water of atleast 2� (50.8mm) MUST be installed. Top of outlet fromtrapMUST be at least 1� (25.4mm) below top of outlet fromunit. Install the trap as near to the unit as possible forproper drainage.

A 3/4� (19.1mm) drain lineMUST be installed if required bylocal codes or if location of unit requires it. Run the drainline to an open drain or other suitable disposal point.

FIGURE 4 Condensate Drain Information*

3/4� (19.1mm)Drain Line

* Condensate trap MUST be installed.

1� (25.4mm)

2� (50.8mm)

3/4� (19.1mm)Threaded FemalePVC Fitting

Electrical Access Panel


7

4. Electrical Wiring

ELECTRICAL SHOCK HAZARD.

Failure to follow this warning could result in prop-erty damage, personal injury, and/or death.

Disconnect power at fuse box or service panel be-fore making any electrical connections.

Unit MUSTbegrounded to electrical service panel.

!

NOTE: All electrical workMUST conform with the require-ments of local codes and ordinances and in the UnitedStates with National Electrical CodeANSl/NFPA70 (or cur-rent edition) and in Canada with CSA C22.1 -- CanadianElectrical Code Part 1 (or current edition). Provide line volt-age power supply from a separate fused circuit with a dis-connect switch (when required) located within sight of theunit. Supply voltage, amperage, wire, fuse and disconnectswitch sizesMUST conform with specifications on the unitrating plate.

WiringMUST be protected from possible mechanical dam-age andMUST NOT interfere with removal of access pan-els, filters, etc.

All exposed wiring and connections MUST be made withweatherproof cable or wire unless installed in conduit.

Low Voltage WiringLow voltage connections are made on the low voltage ter-minal board inside the electrical compartment (seeFIGURE 5). For access, remove the electrical access pan-el (see FIGURE 2).

Refer to the for the connection wiring diagram on the unitfor the applicable model and to the instructions includedwith the thermostat.

Route low voltage wires through the port located at the bot-tom left corner of the blower access panel side of the unit.Route low voltage wires behind unit cornerpost, throughthe wire clip provided, and up to the low voltage terminalboard.

NOTE: If an Electric Heat Accessory is installed, see theElectric Heat Accessory Installation Manual for low voltage

connections. If an economizer is installed, see the follow-ing section, Low Voltage Wiring With Economizer Option.

Low Voltage Wiring With EconomizerOption

Same as the above Low Voltage Wiring section except re-fer to the connection wiring diagram supplied with theeconomizer. Also, a pre--wired plug for the economizer islocated just inside the return air opening.

Thermostat

The location of the thermostat has an important effect onthe operation of the unit. FOLLOW THE INSTRUCTIONSINCLUDED WITH THE THERMOSTAT FOR CORRECTLOCATION, MOUNTING AND WIRING.

Unit Without Economizer

A field supplied single stage thermostat is required.

Unit With Economizer

A field supplied two stage thermostat is recommended foruse with an economizer. If a single stage thermostat isused, the compressor will not start if the economizer cannot satisfy the demand for cooling.

Ground ConnectionsA ground lug is installed on the electrical control plate forthe ground connection (seeFIGURE 5). Use a copper con-ductor of the appropriate size from the unit to a groundedconnection in the electrical service panel or to a properlydriven and electrically grounded ground rod. See WARN-ING above.

Line Voltage Wiring

DoNOT complete line voltage connections until unit is per-manently grounded. All line voltage connections and theground connection MUST be made with copper wire.

Connections for line voltage are made on the unit electricalcontrol plate (see FIGURE 5). For access, remove theelectrical access panel (see FIGURE 2).

Refer to applicable wiring diagram in the Technical SupportManual. Complete the line service connections to the con-


8

tactor �L� terminals on the unit electrical control plate.Check all screw terminals to ensure they are tight.

NOTE: If an Electric Heat Accessory is installed, refer tothe Electric Heat Accessory Installation Manual to deter-mine line voltage connections. The Electric Heat Accesso-ry mounts inside the unit. Field supplied line voltage wiresfor the Electric Heat Accessory (separate from the fieldsupplied line voltage wires to the unit) connect to the circuitbreaker(s) in the Electric Heat Accessory.

Converting 230V Units to 208V

To convert 230V units to 208V:

1. Turn electric power OFF.

2. Remove the electrical access panel.

3. Locate the 24V control transformer.

4. Remove wires from the terminal labeled �240V� onthe 24V control transformer and reconnect them tothe 208V terminal of the 24V control transformer.

5. Replace the electrical access panel.

Field Installed Equipment

Wiring to be done in the field between the unit and other de-vices, or between separate devices which are fieldinstalled and located,MUST NOT exceed the temperaturelimitations for type T wire andMUST be installed accordingto the manufacturer�s instructions for the devices.

Final Electrical Check

Make a final wiring check to be sure system is correctlywired. Inspect field installed wiring and the routing to en-sure that rubbing or chafing due to vibration will not occur.

NOTE: Wiring MUST be installed so it is protected frompossible mechanical damage.

80-30-53

Typical Wiring Installation

Low Voltage Ter-minal Board

Field supplied linevoltage wires

Carefully route lowvoltage wires behindunit cornerpostthrough wire clip

Knockout for Elec-tric Heat Accessoryfield supplied linevoltage wires

Ground lug

FIGURE 5

Electrical ControlPlate

Contactor �L� Ter-minals


9

5. Air Distribution System

For airflow data (blower performance data, blower speedtap settings, filter sizes, etc.) see the Technical SupportManual.

Ductwork

NOTE: The total heat gain from the structure as expressedin total Btu/hr MUST be calculated by manufacturer�smethod or in accordance with �A.S.H.R.A.E. Guide� or�Manual J -- Load Calculations� published by the Air Condi-tioningContractors of America or inCanada �H.R.A.I. Resi-dential Heating and Cooling Load Calculation Manual.�The total heat gain calculated should be equal to or lessthan the cooling capacity. Output based onD.O.E. test pro-cedures, steady state efficiency times input.

Ductwork, supply registers, and return air grillesMUST bedesigned and sized to handle the unit�s cooling air volumerequirements. If the unit is connected to an existing system,the ductwork MUST be checked to make sure it is ade-quate. Extra runs or larger duct sizes may have to beinstalled.

Maximum recommended velocity in trunk ducts is 1000feet per minute (5.08m/s). Velocity in branches should notexceed 800 feet per minute (4.06m/s). Refer to the Techni-cal Support Manual for unit air volume requirements andsystem sizing recommendations.

NOTE: Ductwork sizing affects temperature rise and cool-ing temperature differential. Be sure to properly size duct-work to the capacity and airflow characteristics of your unit.Failure to do so can affect limit controls, compressors, mo-tors, and other components and will lead to premature fail-ure of components. This will also adversely affect day today unit performance.

Refer to unit rating plate for proper Electric Heat Accessorysizing and see the Temperature Rise Check section in theElectric Heat Accessory Installation Instructions.

Ductwork Insulation

It is recommended that ductwork installed outdoors have aminimum of 2� (51mm) of fiberglass insulation and be cov-ered by a weatherproof vapor barrier that is protectedagainst damage. Caulking and flashings, or other meansadequate to provide a permanent weather seal, must beused.

It is recommended that ductwork installed in attics or otherareas exposed to outdoor temperatures be installed with aminimum of 2� (51mm) fiberglass insulation and have anindoor type vapor barrier.

Ductwork Connections

The use of flexible, non--combustible connectors be-tween main trunk ducts and supply and return air plenumsis recommended to minimize vibration transmission .

NOTE: Connect supply and return air plenums to unit in amanner that will allow the top of the unit to be removedwith-out removing plenums. Plenums MUST be individuallysealed to unit casing. Ducts MUST be terminated insidestructure.

Filters

All return airMUST pass through a filter before entering theunit. An electronic air cleaner, optional filter racks or otheraccessible filter arrangementsMUST be installed in the re-turn air ductwork. Minimum recommended filter areas arelisted in the Technical Support Manual and are based on avelocity of 300 ft./min. (1.2m/s) for disposable filters and500 ft./min. (2.54m/s) for washable high velocity filters.

NOTE:Do NOT operate the unit without all filters in place.


10

6. Economizer Accessory

The purpose of an economizer is to:

� Provide cool outdoor air to the conditioned spaceduring the cooling cycle to minimize the use of com-pressors.

� Bring outdoor air into the conditioned space to meetminimum ventilation air requirements whenever thecirculation blower is running.

Theory of Operation

The economizer has two sets of dampers that aremechan-ically linked together. The outdoor air dampers regulate theintake of outdoor air and the return air dampers regulatethe flow of return air (see FIGURE 6). When the outdoor airdampers modulate open, the linkage causes the return airdampers to modulate closed. A barometric relief damper isinstalled in the return air side of the system. It relieves anypositive pressure in the unit created by the economizer.

The economizer is controlled by a logic module which fieldconnects to the unit controls through a harness plug. Thelogic module also controls the compressor staging basedon the thermostat input.

80-50-28b

FIGURE 6 Typical Downflow Economizer

Actuator Motor andLogic Module

Outdoor AirDampers

Mixed AirSensor

Return AirDampers

Sequence of Operation

NOTE: For correct wiring to the low voltage terminal board,see the connection wiring diagram in the economizer�sdocumentation.

When a field supplied two stage thermostat is in the FANON position:

1. The outdoor air dampers will open to the minimumposition for outdoor air.

2. On the thermostat�s call for cooling, the thermostatcompletes Circuit 1 between thermostat terminals Rand G and Y1 for first stage cooling.

If the economizer�s enthalpy sensor determines thatthe outdoor air conditions are below the setting foreconomizer operation, the outdoor air dampers willmodulate open and the return air dampers will modu-late closed.

NOTE: All circuits have a low voltage safety circuitconsisting of a high pressure switch, a low pressureswitch and an anti--cycle delay timer.

3. The mixed air sensor at the blower inlet modulatesthe economizer dampers to prevent the mixed airfrom falling below 56�F (13.3�C). (Mixed air refers toreturn air after it combines with outdoor air from theeconomizer.) The mixed air sensor modulates theoutdoor air dampers between the full open and mini-mum outdoor air positions.

If themixed air is not cold enough tomaintain the con-ditioned space at the selected temperature, the ther-mostat will makeY2 and call for second stage coolingby energizing the economizer logic module. This en-ergizes the Y1 anti--cycle delay timer and contactorC1 which energizes the condenser fan and the com-pressor.

4. If the thermostat is still calling for cooling and theeconomizer�s enthalpy sensor determines that theoutdoor air conditions have risen above the settingfor economizer operation:

a. The economizer dampers will close to the mini-mum position for outdoor air and remain there.

b. Contactor C1 will remain energized and the com-pressor will continue to run.


11

7. Start--up Procedures


Failure to follow this warning could result inproperty damage, personal injury, and/or death.

Use extreme care during all of the followingchecks and procedures.

Make sure electric power is turned OFF asinstructed in appropriate steps.

!

Circulating Air BlowerDetermining Blower Speed


2. From the system design, determine the external stat-ic pressure (ESP) for the supply ducts, return ductsand registers, diffusers, grilles, dampers, heatersand special filters (if any).

3. To your system ESP determined in Step 2, add 0.05inches ofWater Column for awet coil and 0.08 inchesof Water Column for the unit filter.

4 . From the system design, determine the desired cool-ing airflow in cubic feet per minute (CFM).

5. Locate the unit�s Blower Performance Data table inthe tech data sheet for the unit�s voltage. (The techdata sheet is attached to the inside of the electricalaccess panel.) From the table, determine the speedtap the desired airflow requires.

6 . See next section, Speed Taps, to set the blower mo-tor speed terminal block (speed taps) to the coolingspeed determined in the previous steps.

Speed TapsAfter determining the required CFM and speed tap datafrom the tech data sheet, follow the steps below to changespeeds if necessary.

NOTE: The yellow leadMUST always be connected to thespeed tap block at the common quick connect terminal.The terminal is identified asCOM. Also, this is the only leadwhich is 3/16� wide. All other quick connects are 1/4� wide.

Cooling Only

Refer to FIGURE 7 on Page13 and the unit�s wiring dia-gram, which is attached to the inside of the electrical ac-cess panel Wire the speed tap as required.

Cooling and Heating

If an Electric Heat Accessory is used, see its InstallationManual for proper heating speed tap settings. If it has beendetermined that cooling and heating speeds are needed onthe same speed tap, remove the red heating lead from thespeed tap block and connect it to the insulated male termi-nal on the black cooling lead. Then place the insulatedblack female quick connect to the required speed tap.

Check Before Starting

1. Check that the blower motor speed terminal block isset to the proper cooling speed. Refer to the unit wir-ing diagram and the airflow tables on page 12.

2. Check to see that clean, properly sized field suppliedair filters are installed in the return air duct.

3. Inspect the inside of the unit to be sure that all wiresare in place and all tools, etc. are removed.

4. Replace all service access panels.

Check the unit�s operation as outlined in the following in-structions. If any unusual sparking, odors or noises are en-countered, shutOFF electric power immediately. Recheckfor wiring errors or obstructions in or near blower motors.

Reverse Rotation (Scroll CompressorsOnly)

Three phase scroll compressors CAN run in reverse if im-properly wired. If the compressor makes an unusually loudnoise, or if high and low side pressures are nearly identical,this indicates reverse rotation. To correct, reverse any twowires at line voltage connections ONLY. Do NOT rewireany circuits inside the unit to attempt correction of reverserotation.

Circulating Air Blower

1. Be sure electric power is OFF.

2. Set thermostat Heat--Cool selector to OFF.

3. Set thermostat fan switch to AUTO.

4. Turn electric power ON. Nothing should start run-ning.

5. Set thermostat fan switch to ON. The circulating airblower should come ON.

6. Resset thermostat fan switch to AUTO. The circulat-ing air blower should goOFF. Nothing should be run-ning.


12

STANDARD (DIRECT DRIVE) BLOWER PERFORMANCE DATA

UNIT MotorAir Delivery in CFM *

External Static Pressure (In. W.C.)SIZE Speed .20 .30 .40 .50 .60 .70

3 TONHI

MD HIMD LOLO

166515581430--------

1617152214081235

1566148013751173

1507142813321158

1437136512751152

1353128512051115

4 TONHI

MD HIMD LOLO

2124199016141277

2062193615841263

1997187715491242

1928181415071212

1854174614571174

1773167213981127

5 TONHI

MD HIMD LOLO

2124199016141277

2062193615841263

1997187715491242

1928181415071212

1854174614571174

1773167213981127

Air delivery against shown external static pressures taken with 230V to unit, dry coil. For wet coil subtract approx. .25 CFM. Will operate at rated ESP in either horizontal or downflowduct position.* Dry coil, with filter


13

Cooling

1. Be sure that electric power is OFF

2. Set thermostat Heat--Cool select to COOL.

3. Adjust thermostat setting to below room tempera-ture.

4. Turn electric power ON for approximately one min-ute, then OFF. During power application check thefollowing:

a. Contactor -- Contacts closingb. Compressor -- ON

c. Condenser fan motor -- ONd. Circulating air blower -- ON

5. Turn electric power OFF, check the following:

a. Contactor contacts opening.b. Compressor -- OFFc. Condenser fan motor -- OFFd. Circulating blower -- OFF

Heating

If an Electric Heat Accessory is used, see its InstallationManual for proper heater operation.

MOTORHI

4-SPEED MOTOR

RED

BLACK

BLACK

YELLOWCOM

LO

MEDHI

MEDLO

MOTORHI

RED

BLACK

BLACK

YELLOW

3-SPEED MOTOR

COM

MED

LO

FIGURE 7 Blower Motor Speed Taps

(3--Speed and 4--Speed Motors, 208--230 volt)

(3--Speed and 4--Speed Motors, 440 volt)


14

8. Operation

Starting Unit After Shutdown

Cooling

Adjust thermostat setting to desired temperature and setHeat--Cool selector switch to COOL. The unit will come onand operate automatically under control of the thermostat.Close all doors andwindows. The unit may run continuous-ly for several hours or longer on the initial run because ofresidual heat and moisture in the house. This is normal forany air conditioning system.

RISK OF REDUCED FURNACE LIFEFailure to follow this Caution will result in permaturefurnace component failure.

Do NOT operate unit on cooling when the outdoortemperature is below 40�F (4.4�C) unless anoptional low ambient kit is used. This is necessaryto prevent possible damage to the compressor.

! CAUTION

Heating

If the unit has an Electric Heat Accessory installed, see theElectric Heat Accessory Installation Instructions for start-ing procedure.

Turning The Unit Off

1. Set the thermostat selector switch toOFF and set thethermostat fan switch to AUTO. To restart in coolingmode, adjust the thermostat to the desired tempera-ture and set the thermostat Heat--Cool selectorswitch toCOOL. To restart in heatingmode if ElectricHeat Accessory is installed, adjust the thermostat tothe desired temperature and set the thermostatHeat--Cool selector switch to HEAT.

2. To shut the unit down completely, turn electric powerOFF.

Thermostat Fan Switch Operation

With the thermostat fan switch in theON position, the circu-lating air blower will run continuously at the speed used forcooling.

With the thermostat fan switch in the AUTO position, thecirculating air blower will only run during each cooling cycle(or heating cycle if Electric Heat Accessory is installed).

Adjusting Room Temperatures

If the temperature in individual rooms is not as desired, bal-ance the system by adjusting the dampers in the branchducts. Adjust a little at a time and wait a day after eachchange to judge the effect. Once the dampers are adjustedfor normal weather conditions, it is best to leave them thatway. Compensate for temporary weather changes by ad-justing the thermostat setting .

FIGURE 8 Typical Branch Duct Dampers


15

9. Maintenance

Monthly Maintenance and InspectionChecks

Air Filters

Inspect filters at least monthly and replace or clean as re-quired. Washable filters may be cleaned by soaking in milddetergent and rinsing with cold water. Replace filters withthe arrows on the side pointing in the direction of air flow.Dirty filters are the most common cause of inadequateheating or cooling performance, and of compressor fail-ures.

Refrigeration Access Ports

This unit is equipped with refrigeration access portsmounted on the side of the unit. Refer to FIGURE 9 foridentification of ports.

FIGURE 9 Typical Access Ports

Low Side

High Side

Cooling Season Checks (Monthly)Condenser Coil

Keep the condenser inlet and outlet area clean and free ofleaves, grass clippings or other debris. Grass should bekept short in front of the condenser inlet. ShrubberyMUSTbe trimmed back so it is no closer than 30 inches (762mm)to unit.

Condensate Drain

Check for condensate drainage. Clean as required.

Annual Maintenance and Inspection


Failure to follow this warning could result inproperty damage, personal injury, and/or death.

Turn OFF electric power supply at disconnectswitch or service panel before removing any ac-cess or service panel from unit.

!

The annual inspection MUST include lubrication andcleaning as required to ensure efficient operation of theunit. To simplify access, remove all access panels and thetop from the unit if possible.

Condenser Fan Motor

!

RISK OF REDUCED COMPONENT LIFEFailure to follow this Caution could result in prematurecomponent failure.

Donotuse3 in 1 oil, penetrating oil,WD40or similar oils tooil motor bearings.

CAUTION

Oil the condenser fan motor after five years of operationand every five years thereafter.

Use SAE l0W30 motor oil. To oil, remove the hole plugsfrom the motor end bells and add several drops (approxi-mately 1/2 teaspoonful) of oil with a squeeze type, flexibletube oiler. Replace hole plugs after oiling. DoNOT over oil.

Clean the surrounding area and the condenser and evapo-rator coils. Use caution to avoid damage to coil fins.


16

Blower Motor Access

To access the blower motor follow the following steps. Toremove the blower motor and/or the blower motor housingassembly, refer to Method 1 and Method 2 below.


2. Remove the blower access panel.

3. Remove the four screws securing the blower motorhousing. If unit has a support bracket, remove the twoscrews securing the bracket.

4. Slide entire housing toward you. This will allow easieraccess to the speed tap block, motor, and wires.

5. When finished, reassemble in reverse order.

Refer to Figure 10 for a view of blower motor and blowercompartment.

Method 1 and Method 2

Method 1 allows the motor to be removed without remov-ing the entire blower housing assembly. If it is desirable toremove the entire blower housing assembly to work on themotor, use Method 2.

With Method 2, the top of the unit is lifted up so that the en-tire blower housing assembly can be removed. Use Meth-od 2 to replace or repair blower wheel, blower housing, orany unreachable components behind blower assembly.

Blower Motor Removal Using Method 11. Turn electric power OFF.


3. Remove the four screws securing the blower housingto blower deck. If the unit has a support bracket, re-move the two screws securing the support bracket tothe blower housing.

4. Slide entire housing toward you. This will allow easieraccess to the speed tap block, motor, and wires.

5. Reach behind blower housing and locate blowerwheel set nut. Loosen blower wheel set nut.

6. Disconnect all wires from motor and remove the fourpins securing the blower motor mounting cradle toblower housing.

7. Pull motor towards you and remove.


Blower Motor and Blower Housing RemovalUsing Method 21. Turn electric power OFF.


3. Remove four screws securing blower housing toblower deck. If the unit has a support bracket, removethe two screws securing the support bracket to theblower housing.

4. Slide entire housing toward you.

5. Remove screws securing corner and front of unit top(see FIGURE 10).

6. Raise corner of unit top at least 2� (50.8mm). Place asturdy brace at least 2� (50.8mm) thick between cor-ner and unit top. A 2X4 piece of wood is ideal for this.

7. Disconnect all wires from blower housing and slideblower housing out of unit.


FIGURE 10Blower Access ShowingLid Propped with 2X4

Circulating Air BlowerVisually inspect the blower wheel for accumulations of dirtor lint. Clean the compartment and the blower wheel. If ac-cumulation is excessive on blower wheel, or does not easi-ly remove, it will be necessary to remove the blowerassembly.

!

RISK OF REDUCED COMPONENT LIFEFailure to follow this Caution could result in prematurecomponent failure.

Donotuse3 in 1 oil, penetrating oil,WD40or similar oils tooil motor bearings.

CAUTION

The blower motor should be oiled after five years of opera-tion and every five years thereafter. Oil the blower motor byadding 1/2 teaspoonful (1cc) of SAE l0W30 to each motorbearing.


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10. Rigging Instructions

FIGURE 12 Rigging Instructions �C� Chassis

Small 3 Tons 48.00 48.00 32.50

Large 4 -- 5 TONS 73.00 48.00 36.50

CABINETCOOLINGCAPACITYRANGE

LENGTH WIDTH HEIGHT

IN IN IN

3 TON 472 98 122 141 111

4 TON 492 102 128 148 115

5TON 515 107 134 154 121

CORNER WEIGHTS in LBS.

MODEL NUMBER OPERATING WEIGHT A B C DCORNER WEIGHTS

A

B

C

D

Documents

PAE 3 TO 5 TON PACKAGE AIR - Carrier · PAE 3 TO 5 TON PACKAGE AIR Rated in accordance with ARI Standard 210. Installation Instructions Single Package Air Conditioners 2 1. Unit Dimensions