Classroom Unit Ventilator · A 2 to 10 VDC or 3-point floating actuator is available when End Device controls are speci- ... All horizontal units have an appliance grade paint finish

UV-PRC004-ENSeptember 2005

Classroom Unit Ventilator

750 CFM to 2000 CFM

Horizontal Classroom Unit Ventilator

Model HUV

©2004 American Standard Inc. All rights reserved UV-PRC004-EN

A Classroom Choice in HVACClassroom unit ventilators have been cost effective way to heat and cool schools for over half a century. Many schools choose classroom unit ventila-tors because of their ability to heat, cool and ventilate, as well as their du-rable cabinet design and small foot print. Because the unit ventilator is a single-space system, one unit installed in the classroom handles only that room's airflow, thus minimizing the potential for cross contamination be-tween classrooms.

The ceiling-hung, ducted, horizontal unit ventilator may provide benefits in sound sensitive applications. The hor-izontal equipment can be located above the ceiling and away from direct contact with students. They may also be located in a corridor or mezzanine, then ducted into the classroom. Prop-erly designed supply- and return-air ducts can help attenuate HVAC equip-ment and air noise. Locating the units outside of the classroom can also im-prove access and serviceability of the equipment.

Trane unit ventilators are ETL listed, and ARI-840 certified insuring peek performance to meet today’s class-room habitat.

Introduction

Trane Horizontal Classroom Unit Ventilator

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Table ofContents

Introduction 2

Features and Benefits 4

Application Considerations 6

Selection Procedures 10Manual Selection Procedure 10

Model Number Description 11

General Data 14Discharge Inlet Arrangement 14

Weights/Measurements/Motor/Coil Area 15

Coil Volume 16

Coil Selection 17

Performance Data 20Coil Performance 20

Electrical Performance 28

Glycol Correction Factors 30

Acoustical Performance 32

Piping 33

Controls 35Types of Control Packages 35

Wiring 40

Dimensional Data 46

Accessories 53

Mechanical Specifications 55

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Made for the ClassroomEquipment SizeThe horizontal unit ventilator delivers from 750 cfm to 2000 cfm. Trane’s unit ventilator is sized to fit any replace-ment or new construction application.

Cabinet FinishThe unit cabinetry is made of durable industrial grade metal for hard wear-ing applications. All steel surfaces are cleaned, phosphatized, rinsed and dried before applying a final paint fin-ished on metal that may be exposed to the room decor.

AccessAccess to the air filter is made through the bottom of the unit providing effort-less access for filter change-out. The access panel is available with a safety chain option for protection from drop-ping the panel during normal mainte-nance situations.

Spacious End PocketsThe 13 ½-inch wide by 30-inch high x 15 ¼-in deep (standard) to provide un-complicated field installation of valves, piping, and controls. Several large knockouts are provided in both the left and right end pockets for elec-trical and piping connections.

Control ConnectionsAll electrical connections are made in the left-hand end pocket for equip-ment not specified with electric heat. Units equipped with the electric heat option have in-coming power connec-tions made in the right-hand end pock-et. Fan BoardThe fanboard assembly is acoustically designed in a single, rigid assembly that includes the fans, fan housing, bearings, fan shaft and motor. The fan motor is mounted on the heavy gauge, galvanized fan board assembly to help resist corrosion while increasing strength and rigidity. The fan board is removable through two metal screws for service or maintenance/cleaning of the fan housings.

115V MotorThe fan motor is a single speed, per-manent split capacitor with thermal overload protection. A multiple tap auto-transformer is wired to the motor to provide different speed settings. The motor speed is not affected by damper positions. Standard motors are rated up to 0.25 ESP (external stat-ic pressure). High static motors are rat-ed from 0.25 ESP to 0.45 ESP. Isolation of the motor is provided internally at the union shaft. Bearings for the motor are permanently lubricated requiring little maintenance over the lifetime of the equipment.

The motor is removable without com-plete disassembly of the fan board. Simply remove the two motor quick-connects and loosen the shaft cou-pling.

FilterFilters for the horizontal unit ventilator are of 1-inch, throwaway grade. They are shipped with the equipment for in-stallation/start-up purposes. Extra fil-ters may be ordered separately for maintenance of the equipment.

A permanent filter option is available for individuals seeking a renewable vs. a throw-away filtration set-up.

Drain PanThe unit drain pan is positively sloped to assure proper drainage. The pan is insulated on the bottom to help pre-vent condensate formation. The pan is simple to remove for cleaning purpos-es by loosening two front screws.

PipingHydronic piping for the unit ventilator may be factory installed or field pro-vided. It fits painlessly inside the unit end pockets, permitting quick hook-up during the installing phase. The mo-torized valves include a trouble-free, pop-top actuator allowing the mainte-nance or service technician access to the motor without removing the valve body from the piping package.

Features andBenefits

Figure 1: Cabinet access

Figure 2: Fan motor

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CoilsThrough Trane’s various coil combina-tions, room conditions can be met. Two-pipe and four pipe combinations are available to support any applica-tion. Coil selections include hydronic, steam, direct expansion (DX) and elec-tric. For heating coils, Trane provides steam, hot water and electric options. Cooling coils are available as cold wa-ter and DX. Access to the coil for clean-ing purposes is fundamentally one of the greatest features Trane provides as part of the equipment. Maintaining a clean coil inherently increases the ef-ficiency adds to the life of the equip-ment, and helps to maintain proper indoor air quality.

Outside/Return-Air Damper DesignThe outside/return air (OA/RA) damper is a dual blade system to ensure prop-er modulation and mixing of the air to ARI-840 economizing standards. A splitter is placed between the damper blades to separate the fresh/return-air compartments preventing blow-through of the outside air. The blades are insulated to avoid condensate when introducing cold outside air into a room temperature system.

The optional outside air actuator is spring return. The spring return sys-tem closes the OA damper if power is lost to the building and provides for a positive seal. This helps inhibit over cooling or freeze-up of the system dur-ing electrical outages or system shut-down.

When ordered with factory mounted Trane controls, the actuator is 3-point floating arrangement. A 2 to 10 VDC or 3-point floating actuator is available when End Device controls are speci-fied.

Face and BypassThe optional face and bypass design can provide active energy savings to the owner. This design works best dur-ing seasonal changeover when out-side air temperature are in their prime. It also supports morning warm-up when lighter temperatures can easily be drawn into the system before nor-mal classroom operation begins.

The design allows the damper to by-pass the cooing coil to supply cool, un-treated OA into the room. An optional 2-position isolation valve enhances this system by closing off water to the coil to prevent the room temperature from rising to far above or below the intended setpoint.

ControlsTrane offers a broad range in control packages to fit both retrofit and new applications. From the field convert-ible end-device package to a complete building automation system, Trane controls integrate the highest quality components within their unit ventila-tor to allow greater optimization of the entire system.

Certification StandardsComfort, energy and IAQ are all major issues that need to be considered in today’s school designs. Therefore, it is important that designers of these sys-tems have accurate information to make system decisions. That is why the industry has developed perfor-mance standards and certification pro-grams which ensure that the equipment information provided to the design community is correct and comparable across different manufac-turers. The following list of certifica-tions identifies Trane’s commitment in providing the highest quality equip-ment to their customers.

• ARI-840

• ETL

• Rated in accordance to ARI 350 (sound)

• LonMark™

Features andBenefits

Figure 3: Face and bypass damper

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Fully Recessed UnitThe horizontal unit ventilator may be fully recessed into the ceiling space to provide greater noise reduction to the space. With this application, duct collars on the outside air inlet, return air inlet and discharge air outlet are available for ease of duct work connection to the equipment.

Partially Exposed UnitIn situations where greater access to system components is a must (such as filter change-out), a partially exposed unit may be a practical solution. With the partially exposed return/discharge air bottom arrangement, the unit cabinet width increases by 13 1/8-inches for 075-150 unit sizes, and by 14 1/8-inches on the size 200 unit.

Fully Exposed UnitThe horizontal unit ventilator may be fully exposed to the classroom or institution. The most typical arrangement for this application includes a fresh air, ducted upper back with a return air, bar grille on the bottom. Combined with a front discharge grille, this arrangement provides a cost effective way to support individual fresh-air ventilation, while freeing up precious floor space.Note: All horizontal units have an appliance grade paint finish.

Partially Exposed UnitAnother example of a partially exposed unit ventilator includes a fresh air upper back, with a return air lower back, combined with a bottom, double-deflection discharge. This application requires field supplied duct work to the added to the return air side of the unit ventilator.

.Digit 20=H

Digit 20=F

ApplicationConsiderations

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ApplicationConsiderations

Ducted ApplicationsA well designed duct system is beneficial to obtaining satisfactory fan performance. Determining resistance losses for theduct work system is also necessary for acceptable fan performance. Assistance in the design of duct work can be found inthe ASHRAE Handbook. The unit ventilator is designed to operate against ESP thru 0.45". The ESP is determined by addingthe discharge air static pressure to the greater of either the outdoor air static pressure or the return air static pressure.

Table 1: Static pressure air flow reduction

Note:1. Rated air flow @ .25" of static2. It is important not to over-estimate the ESP and oversize the motor. Too large of a motor

may result in operation problems such as noise, vibration, and motor overloading. Anexample would be non-ducted applications.

3. A High ESP motor is typically specified when a supply air duct is required. It is notrecommended to use a high ESP motor in a non-ducted application.

Partially Exposed UnitA ducted discharge option is available to support the many design layouts expected of the mechanical system. The location of the discharge ducting could be critical during installation due to such issues as recessed lighting. Trane provides three selectable ducted discharge locations to reduce interference of other trades on the job site.

Note: When a high ESP motor is used on the ducted system, the return air should enter through a rear duct connection. The return-air should pass through a lined return air duct with at least one 90° elbow to lessen airflow noise.

Condensate PipingThe horizontal unit ventilator drain pan connection is located on the same side as the cooling coil connections (hydronic and DX coils). The stubout size is ¾" outside diameter.

All field supplied condensate lines to the unit should contain ¼" in 12" slope away from the unit ventilator to aid in condensate removal. This is typical for most local codes. A trap is also recommended somewhere in the condensate system.

Note: Drain pan connections are field convertible.

Standard MotorsESP - inch water 750 CFM 1000 CFM 1250 CFM 1500 CFM 2000 CFM

0.0625 8 7 10 9 6

0.125 15 14 18 17 12

0.1875 20 20 23 25 16

0.25 25 26 30 31 20

Hi ESP MotorsESP - inch water 750 CFM 1000 CFM 1250 CFM 1500 CFM 2000 CFM

0.30 17 11 10 12 12

0.35 20 25 18 20 16

0.40 30 35 26 28 22

0.45 40 45 34 38 29

Figure 4: Part load capacity

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A Choice in System DesignThe beauty of the classroom unit ven-tilator stems beyond it’s ability to heat and cool. The unit ventilator design provides an opportunity to create a comfortable atmosphere for living, learning and playing, while supporting energy efficiency savings. Some of the featured benefits of a unit ventilator are:

• Individual room control.

• Fresh air ventilation and filtration.

• Individual dehumidification se-quences per zone.

• Energy savings solutions through economizing functions.

• A choice in heating/cooling applied systems.

• And, because the equipment is mounted directly in the space, in-stallation costs are minimal com-pared to other HVAC systems.

Wide Variety of Heating/Cooling CoilsTrane’s unit ventilator offers a wide variety of coil configurations.

In environments where cooling needs are of main interest, a two-pipe coil coupled with a chiller, or a direct ex-pansion coil joined with a condensing unit may be used.

For heat specific applications, Trane offers a two-pipe hot water only unit to be combined with a boiler. Electric heat and steam options are also avail-able for heat fixed conditions.

When there is seasonal heating and cooling, a two-pipe chilled water/hot water changeover system may be ap-plicable to the mechanical design. This system requires a chiller and a boiler to support the changeover necessity. However, where space constraints may present a concern, the Trane unit ventilator may be equipped with a di-rect expansion coil for cooling, with an auxiliary electric heat coil, hot water coil, or steam coil for heating.

Four-pipe chilled water/hot water sys-tems are also available. This system is typically applied when both heating and cooling may be simultaneously called for in the school structure.

Building AutomationAs part of the building automation sys-tem, the mechanical HVAC system may be optimized to lower energy consumption. By running only the me-chanical devices that are required to support the building load at a given time of day or night, true energy con-sumption savings may be achieved.

Maintenance and serviceability faults through the unit sensing devices are easily defined and cured with an auto-mated system.

With factory shipped direct digital con-trols, installation and start-up of the system are more simple.

CommissioningHVAC system commissioning is ex-tremely important to assure that the design goals for proper IAQ, moisture management, and classroom acous-tics are met.

CondensateProper condensate trapping is re-quired for the classroom unit ventila-tor’s with hydronic and direct expansion coils. In a properly trapped system, when condensate forms dur-ing normal operation, the water level in the trap rises until there is a con-stant flow of water through the pipe. It is imperative to maintain water in the trap, and not allow the trap to dry out during heating season.

Equipment should be installed level to avoid condensate build-up around the coil.

PerformanceApplication of this product should be within the catalogs airflow and unit performance. The Trane Official Prod-uct Selection System (TOPSS) will aid in the selection process for a set of giv-en conditions. If this program has not been made available, ask a local Trane sales engineer to supply the desired selections or provide a copy of the pro-gram.

Application ConsiderationsThe Applied Unit Ventilator

System choice for the classroom unit ventilator

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Ventilation for Acceptable IAQSupplying proper ventilation to a classroom is challenging. The various rooms that make up a school are for-ever changing in their proper ventila-tion needs. Building occupants and their activities generate pollutants that heighten the ventilation requirements. And because of this intermittent occu-pancy, the ventilation frequency of a classroom is constantly on the move.

Ventilation systems dilute and remove indoor contaminants, while mechani-cal heating and cooling systems con-trol the indoor temperature and humidity. Supplying an adequate amount of fresh air to an occupied classroom is necessary for good in-door air quality. IAQ should be consid-ered a top priority in the school environment because children are still developing physically and are more likely to suffer the consequences of in-door pollutants. For this reason, air quality in schools is of particular con-cern. Proper conditioning of the indoor air is more than a quality issue; it en-compasses the safety and stewardship of our investment in the students, staff and facility.The beauty of a classroom unit ventilator is its ability to provide heating, cooling, ventilation and dehu-midification as a single-zone system.

ASHRAE Control CyclesThere are a variety of control systems available in unit ventilators. The exact method of controlling the amount of outside air and heating capacity can vary. However, all systems provide a sequence of operation designed to provide rapid classroom warm-up and increasing amount of ventilation air to offset classroom overheating. Rea-sons for classroom overheating can in-clude:

• Sun or solar heat produced through large glass areas in a school.

• Lighting.

• Students

To help supply proper ventilation to these fluctuating heat gains, the Trane unit ventilator is designed to provide rapid classroom warm-up and increas-ing amounts of ventilation air to offset classroom overheating.

ASHRAE Cycle IAll standard unit ventilator cycles au-tomatically close the outside air damp-er whenever maximum heating capacity is required. As room temper-ature approaches the comfort setpoint, the outside air damper opens fully, and the unit handles 100 percent out-side air. Unit capacity is then con-trolled by modulating the heating element capacity.

ASHRAE Cycle I is typically used in ar-eas where a large quantity of outdoor air is required to offset the air being exhausted to relieve the room of un-pleasant odors and particles.

ASHRAE Cycle IIASHRAE Cycle II is the most widely used ventilation control. Similar to Cy-cle I, the outside air damper is closed during warm-up. But with Cycle II, the unit handles recirculated air through the return air system. As temperature approaches the comfort setting, the outside air damper opens to admit a predetermined minimum amount of outside air. This minimum has been established by local code require-ments and good engineering practices per ARI-840. Unit capacity is controlled by varying the heating element out-put. If room temperature rises above the comfort setting, the heating ele-ment is turned off and an increasing amount of outside air is admitted until only outside air is being delivered.

ASHRAE Cycle II is a very economical control sequence often referred to as integrated economizing. This design supports optimum ventilation and pro-vides the greatest energy savings. This is further proof of why ARI-840 certifi-cation is important in minimizing ener-gy consumption through economizer performance.

Freeze ProtectionThe most important advantage the Trane blow-thru design provides is ad-ditional protection against coil freeze-up. In contrast, draw-thru configura-tions allow little mixing of the return and outside air stream while locating the coil very close to the outside air in-let. This process creates "cold spots" on the coil which could lead to coil freeze-up.

With a blow-thru design, face & by-pass with isolation valve control is not necessary (as with other manufactur-ers) to provide proper freeze protec-tion to the unit ventilator. This adds cost and more mechanical compo-nents that could break down. The placement of the coil above the fan al-lows enough space for the coil to avoid "cold spots" that could cause freezing.

Application ConsiderationsVentilation

Figure 5: ASHRAE Cycle graph

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Selecting a Unit VentilatorTrane horizontal classroom unit venti-lators provide air delivery and capaci-ties necessary to meet the requirements of modern school class-rooms. They are available with the in-dustry’s widest selection of coils to precisely satisfy heating, ventilating and air conditioning loads with the best individual type of system. Unit ventilator selection involves three ba-sic steps.

• Determine the classroom/space unit cooling and/or heating loads

• Determine the unit size

• Select the coil

Capacity RequiredThe first step in unit ventilator selec-tion is to determine room heating and air conditioning loads. The calculation of this load is essential if the equip-ment is to be economical in first cost and operating cost.

Adequate ventilation is mandatory in classroom air conditioning design. The amount is often specified by local or state codes and, in air conditioned schools, may be either the same or less than that specified for heating sys-tems. The usual requirement is be-tween 15 and 25 cfm of outside air per occupant, based on the intended use of the room. For instance, a chemistry laboratory normally requires more ventilation for odor control than a low occupancy speech clinic.

Ventilation is an important concern and should be accurately determined to assure good indoor air quality. Pur-posely oversizing units should be avoided, since it can cause comfort and control issues.

Unit SizeUnit ventilator size is determined by three factors: • Total air circulation

• Ventilation cooling economizer ca-pacity required

• Total cooling or heating capacity required

Total air circulation, if not specified by code, should be sufficient to ensure comfort conditions throughout the room. This is usually from six to nine air changes per hour, but can vary with room design and exposure. Often rooms with large sun exposure re-quire additional circulation to avoid hot spots.

Ventilation cooling capacity is deter-mined by the amount of outside air de-livered with the outside air damper fully open, and the temperature differ-ence between the outside air and the classroom. In air conditioning applica-tions, ventilation cooling capacities should maintain the comfort setting in the classroom whenever the outside air temperature is below the unit or system changeover temperature.

Example:Ventilation cooling capacity =

1.085 x cfmt x (T1 - T2)

cfmt = Total air capacity of unit withoutside air damper open 100%.

T1 = Room temperature.

T2 = Outside air temperature.

In classrooms with exceptionally heavy air conditioning loads, unit size may be determined by the total cool-ing requirement. Good practice dic-tates 375 to 425 cfm per ton of hydronic cooling capacity. Normally, however, Trane classroom air condi-tioner coils have sufficient capacities.

Example:Given: Air circulation specified = 8 air changes per hour.

Classroom size = 35 ft long x 25 ft wide x 10 ft high

Inside design air temperature = 75 degrees F

Ventilation cooling required at 58 degrees F = 29,000 BTU

CFM required =8 changes/hr x (35 x 25 x 10)ft3

60 Minutes/hr

= 1170 cfm

Checking ventilation cooling capacity:29,800 BTU = 1.085 x CFM x (80-58)

CFM = 1250

This indicates that a 1250 cfm unit would have satisfactory ventilation cooling capacity at the design changeover point of 58-degrees F. Coil capacity will become confirmed when the coil is selected.

Coil SelectionSelecting the correct coil is done through Trane’s Official Product Selec-tion System (TOPSS).

For your convenience, TOPSS has a mixed air calculator built into the pro-gram.

Selection Procedures

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DIGIT 1-3: UNIT CONFIGURATIONHUV = Horizontal Unit Ventilator

DIGIT 4: DEVELOPMENT SEQUENCE

C = Third Generation

DIGIT 5-7: NOMINAL CAPACITY075 = 750 CFM100 = 1000 CFM125 = 1250 CFM150 = 1500 CFM200 = 2000 CFM

DIGIT 8: UNIT INCOMING POWER SUPPLY

1 = 120V/1-Phase Power Supply2 = 208V/1-Phase Power Supply3 = 208V/3-Phase Power Supply4 = 240V/1-Phase Power Supply5 = 240V/3-Phase Power Supply6 = 277V/1-Phase Power Supply8 = 480V/3-Phase 4-Wire Power

Supply

DIGIT 9: PSC MOTOR/DISCONNECT

0 = Std. Motor, No Disconnect1 = Std. Motor with Non-Fused

Toggle 3 = Std. Motor with Circuit Breaker

(E-Ht)A = Hi-ESP Motor, No DisconnectB = Hi-ESP Motor with Non-Fused

ToggleD = Hi-ESP Motor with Circuit Break-

er (E-Ht)

DIGIT 10&11: DESIGN SEQUENCECurrent Design Sequence

DIGIT 12&13: COIL CONFIGURATION

(Single Coil Options)AA = 2-Pipe CW/HW CoilAB = 2-Pipe CW/HW CoilAC = 2-Pipe CW/HW CoilAD = 2-Pipe CW/HW CoilAE = 2-Pipe CW/HW CoilH1 = 2-Pipe HW CoilH2 = 2-Pipe HW CoilH3 = 2-Pipe HW CoilH4 = 2-Pipe HW CoilH5 = 2-Pipe HW CoilH6 = 2-Pipe HW CoilK1 = 2-Pipe Steam Distributing CoilK2 = 2-Pipe Steam Distributing CoilE4 = 4-Element Electric Heat CoilE6 = 6-Element Electric Heat CoilE7 = 7-Element Electric Heat CoilE9 = 9-Element Electric Heat CoilF0 = 2-Pipe Direct Expansion Coil

(Coupled Coil Options)DA = 4-Pipe CW/Preheat HW CoilDC = 4-Pipe CW/Preheat HW CoilDD = 4-Pipe CW/Preheat HW CoilDE = 4-Pipe CW/Preheat HW CoilDK = 4-Pipe CW/Steam PreheatX3 = 2-Pipe CW/3-Element PreheatX4 = 2-Pipe CW/4-Element PreheatX6 = 2-Pipe CW/6-Element PreheatFA = 4-Pipe DX/HW Preheat CoilFK = 4-Pipe DX/Preheat Steam CoilF3 = 2-Pipe DX/3-Element PreheatF4 = 2-Pipe DX/4-Element PreheatF6 = 2-Pipe DX/6-Element PreheatR1 = 4-Pipe CW/Reheat HW CoilR2 = 4-Pipe CW/Reheat HW Coil

DIGIT 14: COIL CONNECTIONS(Single Coil Options)A = Right Hand SupplyB = Left Hand Supply

(Coupled Coil Options)C = Left Hand Cool/Right Hand HeatD = Right Hand Cool/Left Hand Heat

DIGIT 15: CONTROL TYPES0 = None/Field Installed Controls

(TracerTM ZN520, Standalone System)

Q = Tracer ZN520 Std. PackageR = Tracer ZN520 Std. Package w/

Low TempT = Tracer ZN520 Std. Package w/

Time ClockU = Tracer ZN520 Std. Package w/

Low Temp & Time Clock

(TracerTM ZN520, Integrated Comfort System)

V = Tracer ZN520 ICSW = Tracer ZN520 ICS w/Low TempX = Tracer ZN520 ICS w/Fan Status

ProofY = Tracer ZN520 ICS w/Low Temp &

Fan Status Proof

(End Device Package)8 = DDC Std. Package9 = DDC Std. Package w/Low Temp

DIGIT 16: HEATING/CHANGE OVER COIL CONTROL

0 = None/Field Installed Controls1 = Face & Bypass Damper Only/Field

Installed Controls2 = Face & Bypass Damper w/2-Pipe

Control3 = Face & Bypass Damper w/4-Pipe

Control & Isolation Valve4 = Single Stage Electric Heat5 = Dual Stage Electric Heat7 = Face & Bypass Damper w/2-Pipe

Control & Isolation Valve

Three-Point Modulating ValveTwo-way Valve DDC Control

9 = 1/2-inch Valve, Cv = 3.3W = 1/2-inch Valve, Cv = 1.9 G = 3/4-inch Valve, Cv = 4.7 H = 1-inch Valve, Cv = 6.6

ModelNumber

Horizontal Unit Ventilator Model Number

5 10 15 20

H U V C 125 2 0 A0 AA B 0 0 0 0 0 1 1 A 0 1 0 0 0 0 1 1 1 025

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Three-Point Modulating ValveThree-way Valve DDC Control

Z = 1/2-inch Valve, Cv = 1.5Q = 1/2-inch Valve, Cv = 3.8R = 3/4-inch Valve, Cv = 6.6

Three-Point Modulating ValveSteam Coil

T = 1/2-inch Valve, Cv = 1.9U= 1/2-inch Valve, Cv = 4.7V = 3/4-inch Valve, Cv = 8.6

DIGIT 17: COOLING COIL CONTROL

0 = None/Field Installed Controls1 = Single Stage DX Controls

Three-Point Modulating ValveTwo-way Valve DDC Control

W = 1/2-inch Valve, Cv = 1.9 G = 3/4-inch Valve, Cv = 4.7 H = 1-inch Valve, Cv = 6.6

Three-Point Modulating ValveThree-way Valve DDC Control

Z = 1/2-inch Valve, Cv = 1.5 Q = 1/2-inch Valve, Cv = 3.8 R = 3/4-inch Valve, Cv = 6.6

DIGIT 18: DAMPER CONFIGURATION

0 = Field Installed Damper Actuator1 = 100% Return Air/No Damper or

Actuator

(Modulating ASHRAE Cycle II)F = RA/OA Damper and Actuator (2-

10 VDC)A = RA/OA Damper and Actuator (3-

Point Modulating)E = RA/OA Damper and Actuator

with Exhaust (3-Point Mod)

(Two Position Control) D = Damper w/Manual Quad Adjust

DIGIT 19: ZONE SENSOR/FAN SPEED SWITCH

0 = Unit Mtd. Manual Fan Speed Switch

1 = Wall Mtd. Manual Fan Speed Switch

DDC Control Options-Wall Mtd Sensor and Speed Switch

A = Sensor w/External Setpoint, TOV & Cancel, 1-Spd Fan Switch

B = Sensor w/External Setpoint, TOV & Cancel, 2-Spd Fan Switch

D = Sensor w/Internal Setpoint, 2-Spd Fan Switch

DDC Control Options-Unit Mtd Sensor and Speed Switch

E = Sensor w/External Setpoint, TOV & Cancel, 1-Spd Fan Switch

F = Sensor w/External Setpoint, TOV & Cancel, 2-Spd Fan Switch

H = Sensor w/Internal Setpoint, 2-Spd Fan Switch

Tracer ZN520 Options-Wall Mtd Sensor & Speed Switch

T = Sensor w/External Setpoint, TOV, w/Fan High-Low-Auto-OFF

U = Sensor w/External Setpoint, TOV, w/Fan Auto-OFF

V = Sensor w/Internal Setpoint, TOV, w/Fan High-Low-Auto-OFF

W = Sensor w/External Setpoint, w/Fan High-Low-Auto-OFF

X = Sensor w/ Internal Setpoint, w/Fan Auto-OFF

Tracer ZN520 Options-Wall Mtd Sensor & Unit Mtd Fan Sw

7 = Sensor w/External Setpoint, w/Unit Mounted 2-Speed Fan Sw

8 = Sensor w/ Internal Setpoint, w/ Unit Mounted 2-Speed Fan Sw

9 = Sensor w/ External Setpoint, w/ Unit Mounted 1-Speed Fan Sw

Tracer ZN520 Options-Unit Mtd Sensor & Speed Switch

Y = Sensor w/External Setpoint, TOV, w/Fan High-Low-Auto-OFF

Z = Sensor, w/External Setpoint, TOV, w/Fan Auto-OFF

DIGIT 20: INLET ARRANGEMENTA = FA Duct Top/RA Duct Lower

BackB = FA Duct Top/RA Duct BottomC = FA Duct Top/RA Bar Grille Bot-

tomD = FA Duct Top/RA Open BottomE = 100% FA Duct TopF = FA Duct Upper Back/RA Duct

Lower BackG = FA Duct Upper Back/RA Duct

BottomH = FA Duct Upper Back/RA Bar

Grille BottomJ = FA Duct Upper Back/RA Open

Bottom (no grille)K = 100% FA Duct Upper BackL = 100% RA Duct Lower BackM = 100% RA Duct BottomN = 100% RA Bar Grille BottomP = 100% RA Open Bottom (no grille)

DIGIT 21: DISCHARGE ARRANGEMENT

1 = Bar Grille Discharge2 = Duct Collar Discharge 7 1/8-inch

from Top3 = Duct Collar Discharge 3/4-inch

from Top4 = Duct Collar Discharge 3 5/8-inch

from Top5 = Front Double Deflection Grille

Discharge6 = Front Double Deflection Opening

Only (no grille)7 = Bottom w/Double Deflection

Grille

ModelNumber

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DIGIT 22: UNIT ACCESS PANEL0 = Std. Horizontal Access Panel1 = Safety Chain/Std. Access Panel2 = Removable Access Panel3 = Safety Chain/Removable

Access Panel

DIGIT 23: RECESSING FLANGE0 = No Recessing Flange1 = Standard Recessing Flange

DIGIT 24: PIPING PACKAGE0 = No Factory Installed Piping

PackageA = Package 1; Standard PackageC = Package 2; Standard Package w/

Circuit Balancing ValveD = Package 3; Standard Package w/

Strainer and Circuit Balancing Valve

DIGIT 25: FILTER1 = Throwaway Filter2 = Permanent/Renewable Polyure-

thane w/Metal Frame

DIGIT 26: COLOR SELECTION1 = Deluxe Beige Cabinet2 = Cameo White Cabinet3 = Soft Dove Cabinet4 = Stone Gray Cabinet5 = Driftwood Gray Cabinet

DIGIT 27: UL LISTING0 = Non UL Listed Unit1 = UL Listed Unit

DIGIT 28: DDC CONTROL ACCESSORIES

0 = No AccessoriesA = C0-2 SensorB = Wall Mounted Relative Humidity

Sensor

ModelNumber

14 UV-PRC004-EN

General DataDischarge & Inlet Arrangements

UV-PRC004-EN 15

General Data

Table 5: Coil area

Table 6: Inlet grille free area

Table 2: Weights & measurements: horizontal unit ventilators

Unit Size 075 100 125 150 200Unit Length 70 1/4” 82 1/4” 94 1/4” 106 1/4” 106 1/4”

Unit Height 16 5/8” 16 5/8” 16 5/8” 16 5/8” 17 5/8”

Unit Width (Front Discharge) 35 5/8” 35 5/8” 35 5/8” 35 5/8” 43 1/8”

Unit Width (Bottom Discharge) 48 3/4” 48 3/4” 48 3/4” 48 3/4” 57 1/4”

Shipping Weight (lbs.) * 340* 375* 435* 500* 600*

Filter Size (inches-actual) 41 1/2 x 15 1/4 x 1 53 1/2 x 15 1/4 x 1 65 1/2 x 15 1/4 x 1 77 1/2 x 15 1/4 x 1 77 1/2 x 15 1/4 x 1

*Working weight is approximately 10% less than shipping weight.*Trane recommends 1/4-inch rods for hanging suspension.

Table 3: Standard motor data (typical for AA coil)

Unit Size Volts RPM (Nominal)

CFM (Nominal)

Amps (FLA)

Watts HP

075 115/60/1 1075 750 2.3 222 1/6

100 115/60/1 1075 1000 2.3 222 1/6

125 115/60/1 1075 1250 2.6 287 1/4

150 115/60/1 1075 1500 2.6 287 1/4

200 115/60/1 940 2000 5.7 639 1/3

Table 4: Hi-ESP motor data (typical for AA coil)

Unit Size Volts RPM (Nominal)

CFM (Nominal)

Amps (FLA)

Watts HP

075 115/60/1 1360 750 4.8 597 1/3

100 115/60/1 1360 1000 4.8 597 1/3

125 115/60/1 1410 1250 7.0 844 1/2

150 115/60/1 1410 1500 7.0 844 1/2

200 115/60/1 1140 2000 8.1 936 3/4

Unit Size Length (inch)

Width (inch)

Face Area(Square-inch)

075 42 12 504

100 54 12 648

125 66 12 792

150 78 12 936

200 78 12 936

Unit Size Horizontal Minimum Free Area Horizontal Minimum Free AreaOutletSq. In.

InletSq. In.

OutletSq. In.

InletSq. In.

075 290 113 232 144

100 370 145 296 192

125 450 188 364 240

150 and 200 530 210 430 288

16 UV-PRC004-EN

Table 7: Coil volume (gallons)

Coil Type Unit Size Volume (Ga.)AA,AB 075 0.72

AA,AB 100 0.85

AA,AB 125 0.99

AA,AB 150-200 1.57

AC 075 0.97

AC 100 1.17

AC 125 1.40

AC 150-200 2.27

AD & AE 075 1.25

AD & AE 100 1.51

AD & AE 125 1.80

AD & AE 150-200 2.96

DA-DC 075 0.86

DA-DC 100 0.98

DA-DC 125 1.13

DA-DC 150-200 1.71

DD-DE 075 1.11

DD-DE 100 1.30

DD-DE 125 1.53

DD-DE 150-200 2.39

DK 075 0.97

DK 100 1.17

DK 125 1.39

DK 150-200 2.25

H1-H3 075 0.24

H1-H3 100 0.30

H1-H3 125 0.35

H1-H3 150-200 0.68

H4-H6 075 0.72

H4-H6 100 0.85

H4-H6 125 0.99

H4-H6 150-200 1.57

R1-R2 075 1.21

R1-R2 100 1.47

R1-R2 125 1.73

R1-R2 150-200 2.94

X3-X6 075 0.97

X3-X6 100 1.17

X3-X6 125 0.99

X3-X6 150-200 2.26

General Data

UV-PRC004-EN 17

Note:A manual air vent is provided on all hydronic coils. The vent allows air to be purged from the coil during start-up, or maintenance. The air vent is located on the return header. Similarly, a drain plug is located at the bottom of the MAIN coil return header.

Coil Specifications Unit Size Coil Description Coil TypeFins per

inchFPI

Rows Cooling (Main)

Rows Heating (Main)

Face & Bypass

Hydronic Main Coil• Wavy plate finned• Hydrostatically tested at 350 PSI

Piping packages for the main coil assembly are always supplied as a 3/4" package.

Left hand configuration shown.

075-200HW/CW

Main Changeover Coil

AA 12 2 2

Yes

AB 16 2 2

AC 12 3 3

AD 12 4 4

AE 16 4 4

075-200HW Only Main Coil

H1 12 0 1

Yes

H2 14 0 1

H3 16 0 1

H4 12 0 2

H5 14 0 2

H6 16 0 2

075-200 CW-Main/HW-Preheat Auxiliary Coil

DA 12 2 -

YesDC 16 2 -

DD 12 2 -

DE 16 2 -075-100

CW-Main/Electric Heat Auxiliary Coil

X3-X6

12 3 -

No125 16 2 -

150 12 3 -

200 16 3 -

075-150 CW-Main/Steam Auxiliary Coil

DK12 3 -

No200 12 3 -

075-200CW-Main/HW (reheat)

Auxiliary CoilR1 12 3 -

NoR2 16 3 -

Hydronic Auxiliary Coil• Wavy plate finned• Hydrostatically tested at 350 PSI

Piping packages for the main coil assembly are always supplied as a 3/4" package.

Right hand configuration shown.

075-200CW-Main/HW-Preheat

Auxiliary Coil

DA 12 - 1

YesDC 16 - 1

DD 12 - 1

DE 16 - 1

075-150HW ONLY Main Coil FA

12 - 1No

200 14 - 1

075-200 CW-Main/HW (reheat) Auxiliary Coil

R1 12 - 1No

R2 16 - 1

General DataCoils

18 UV-PRC004-EN

General DataCoils

Coil Specifications Unit Size Coil Description Coil TypeFins per

inchFPI

Rows Cooling (Main)

Rows Heating (Main)

Face & Bypass

Steam Main Coil• 1-Row, tube-in-tube distributing coil• 1-inch female pipe connection

Piping packages for steam coils are field provided. Equipment specified with Trane controls will benefit from an optional 2-position isolation valve to be used for close-off to the steam coil when the damper is in full bypass position.


075-150Steam OnlyMain Coil

K1 8 - 1 Yes

075, 125 K2 10 - 1 Yes100 K2 13 - 1 Yes200 K2 14 - 1 Yes

Steam Auxiliary Coil• 1-Row, tube-in-tube distributing coil• 1-inch female pipe connection

Piping packages for steam coils are field provided. The modulating piping valve (option) is shipped loose and field installed.


075, 125CW-Main/Steam-Preheat

Auxiliary Coil

DK 11 - 1

No100 DK 12 - 1

150-200 DK 14 - 1

075, 125DX Main Coil/Steam-Preheat Auxiliary Coil

FK 11 - 1

No100 FK 12 - 1

150-200 FK 14 - 1

UV-PRC004-EN 19

General DataCoils

Coil Specifications Unit Size Coil Description Coil Type # of Elem.Rows

Cooling (Main)

Rows Heating (Main)

Face & Bypass

Electric Heat Coil• Electric preheat coils consist of special

resistance elements inserted in the coils fin surface for maximum element life, heat transfer and safety.

• Units include a high temperature cut-out with a continuous sensing element. This device interrupts electrical power whenever excessive temperatures are sensed along the leaving air side of the coil.

• Electric heat units include a panel interlock switch to disconnect power to the heating element when the access panel is opened.

• Power connection is made in the right hand end pocket.

• A circuit breaker option is available through the equipment model number.

075-200

CW-Main/Electric Heat Auxiliary Coil

F3, X3 3 1 -

No

F4, X4 4 1 -

F6, X6 6 1 -

Electric Heat Main Coil

E4 4 - 1

E6 6 - 1

E7 7 - 1

E9 9 - 1

Direct Expansion Coil• The direct expansion (DX) refrigerant coil

includes a factory mounted thermal expansion valve (TXV) and equalizing tube.

• 50 VA transformer

• Time delay relay

• Frost detection sensor

• Outside air sensor

Available in a left hand configuration Only.

075-150 DX-Main/Electric Heat-Preheat Auxiliary Coil

F3-F612 1 -

No200 14 1 -

075-150 DX-Main CoilF0

12 2 -No

200 14 2 -

075-150 DX-Main/HW-Preheat Auxiliary Coil

FA12 2 -

No200 14 2 -

Note: All refrigerant coils (F0, FA, F3, F4, F6) are equipped with a thermal expansion valve flow metering device. This device provides precise metering of the refrigerant flow through the coil and allows the unit to operate at an entering air temperature from 40 F to 90 F.

20 UV-PRC004-EN

Table P1: 2-Pipe coil with free discharge

Table P2: 2-Pipe coil with high static motor

HUVSize

CoilType

CFM Cooling (80/67 EAT, 45 EWT/55 LWT) Heating (70 EAT, 180 EWT/140 LWT)WattTMBH SMBH GPM WPD TMBH GPM WPD

075

AA 875 19.0 15.3 3.8 1.6 52.0 2.60 0.7 160AB 825 21.1 16.2 4.22 1.9 57.8 2.89 0.8 160AC 815 27.9 19.2 5.58 4.6 63.9 3.19 1.4 160AD 780 21.0 16.6 4.20 0.7 67.2 3.36 0.4 160AE 760 19.9 15.5 3.97 0.6 71.7 3.58 0.5 160

100

AA 1090 25.6 19.0 5.13 3.3 67.0 3.35 1.2 210AB 1030 27.7 20.0 5.54 3.8 74.4 3.72 1.5 210AC 1025 34.6 23.1 6.93 8.0 81.9 4.09 2.5 210AD 975 31.0 21.4 6.19 1.7 86.6 4.33 0.7 210AE 1015 31.7 21.6 6.35 1.8 97.3 4.87 0.9 210

125

AA 1240 34.1 25.5 6.82 6.3 79.0 3.95 1.9 225AB 1300 38.5 27.7 7.69 7.8 94.4 4.72 2.7 240AC 1290 43.2 30.0 8.65 5.0 101.2 5.06 1.6 240AD 1240 47.1 31.4 9.42 4.0 110.7 5.54 1.3 240AE 1265 47.1 31.0 9.43 4.1 122.3 6.11 1.6 265

150

AA 1600 42.9 31.7 8.58 10.8 100.3 5.01 3.3 260AB 1525 44.9 31.8 8.98 11.7 112.1 5.60 4.1 260AC 1510 51.0 34.3 10.20 7.5 119.9 5.99 2.4 260AD 1600 56.9 36.9 11.39 6.3 141.8 7.09 2.3 295AE 1485 55.3 35.3 11.06 6.0 144.8 7.24 2.3 295

200

AA 2085 51.1 38.9 10.23 14.7 120.0 6.00 4.6 570AB 1985 56.3 40.9 11.27 17.5 135.4 6.77 5.7 560AC 1970 63.9 44.1 12.77 11.2 146.4 7.32 3.4 560AD 1885 71.0 46.8 14.20 9.5 161.7 8.08 2.9 540AE 1785 68.6 44.3 13.73 8.9 169.3 8.47 3.1 530

HUVSize

CoilType


075

AA 780 17.3 13.9 3.47 1.4 48.0 2.40 0.6 305AB 760 19.7 15.1 3.93 1.7 54.4 2.72 0.7 305AC 755 26.3 18.0 5.25 4.1 60.2 3.01 1.2 305AD 740 18.9 15.3 3.78 0.6 64.2 3.21 0.4 305AE 795 22.2 16.8 4.44 0.8 74.5 3.73 0.5 335

100

AA 1115 28.5 21.3 5.70 3.9 68.0 3.40 1.3 500AB 1090 31.4 22.8 6.29 4.7 77.5 3.88 1.6 500AC 1085 39.1 26.4 7.83 10.0 85.5 4.28 2.7 500AD 1055 37.4 25.9 7.49 2.4 92.4 4.62 0.8 500AE 1005 36.0 24.4 7.20 2.2 96.4 4.82 0.9 480

125

AA 1255 35.0 26.3 7.01 6.6 79.6 3.98 2.0 470AB 1225 38.1 27.5 7.62 7.7 90.4 4.52 2.5 470AC 1220 42.8 29.7 8.57 4.9 96.9 4.85 1.4 470AD 1350 51.6 34.6 10.32 4.8 118.7 5.93 1.5 525AE 1295 50.0 32.9 10.00 4.5 124.8 6.24 1.6 525

150

AA 1490 38.7 28.1 7.73 9.0 95.4 4.77 3.1 550AB 1450 41.2 29.0 8.23 10.0 108.0 5.40 3.8 550AC 1445 46.9 31.3 9.38 6.5 115.8 5.79 2.2 550AD 1715 56.6 36.6 11.32 6.3 150.0 7.50 2.5 680AE 1635 54.1 34.5 10.82 5.8 157.2 7.86 2.7 680

200

AA 2095 50.4 38.3 10.08 14.3 120.4 6.02 4.6 810AB 2005 55.4 40.2 11.08 17.0 136.4 6.82 5.8 790AC 1990 62.7 43.2 12.54 10.8 147.4 7.37 3.4 790AD 1895 69.1 45.5 13.82 9.0 162.4 8.12 2.9 770AE 1770 66.5 42.9 1331 8.4 168.1 8.40 3.1 750

Performance DataA-Coils

UV-PRC004-EN 21

Table P3: 4-Pipe coil with free discharge

Table P4: 4-Pipe coil with high static motor

HUVSize

CoilType


075

DA 815 18.1 14.5 3.63 1.5 51.2 2.56 0.5 160DC 780 20.3 15.6 4.06 1.8 56.7 2.83 0.7 160DD 780 27.1 18.6 5.42 4.3 49.7 2.48 0.5 160DE 760 27.7 18.7 5.54 4.5 55.6 2.78 0.6 160

100

DA 1025 24.7 18.2 4.95 3.1 66.3 3.32 1.0 210DC 975 26.3 18.9 5.25 3.4 73.0 3.65 1.2 210DD 975 33.3 22.1 6.66 7.5 64.0 3.20 0.9 210DE 1015 35.5 23.4 7.09 8.4 73.9 3.69 1.2 210

125

DA 1290 34.7 26.0 6.93 6.5 84.0 4.20 1.7 240DC 1240 37.6 27.1 7.52 7.5 93.1 4.66 2.0 240DD 1240 42.4 29.4 8.48 5.0 81.6 4.08 1.6 240DE 1265 45.3 31.0 9.06 5.8 94.5 4.73 2.1 265

150

DA 1510 41.0 30.0 8.20 9.9 99.6 4.98 2.5 260DC 1600 44.9 31.8 8.98 11.7 118.6 5.93 3.4 295DD 1600 51.1 34.4 10.23 7.8 103.7 5.19 2.7 295DE 1485 52.9 35.2 10.58 8.6 112.3 5.61 3.1 295

200

DA 1970 49.6 37.6 9.93 13.9 119.8 5.99 3.5 560DC 1885 54.8 39.7 10.96 16.6 133.6 6.68 4.3 540DD 1885 62.4 42.9 12.47 11.2 116.2 5.81 3.3 540DE 1785 64.8 43.8 12.96 12.5 128.5 6.43 4.0 530

HUVSize

CoilType


075

DA 755 16.9 13.6 3.38 1.3 48.5 2.43 0.5 305DC 740 19.2 14.7 3.83 1.6 54.4 2.72 0.6 305DD 740 25.8 17.7 5.16 4.0 47.8 2.39 0.5 305DE 795 29.3 19.9 5.85 5.0 57.5 2.87 0.7 335

100

DA 1085 27.8 20.8 5.57 3.8 69.0 3.45 1.1 500DC 1055 30.7 22.3 6.15 4.5 77.4 3.87 1.3 500DD 1055 38.5 25.9 7.69 9.7 67.7 3.39 1.0 500DE 1005 39.2 26.1 7.84 10.0 73.3 3.66 1.2 480

125

DA 1220 34.4 25.7 6.88 6.4 80.7 4.03 1.5 470DC 1350 40.8 29.6 8.16 8.7 99.2 4.96 2.3 525DD 1350 46.0 32.1 9.21 5.8 86.7 4.34 1.8 525DE 1295 47.8 32.8 9.57 6.4 96.2 4.81 2.1 525

150

DA 1445 38.1 27.7 7.63 8.7 96.5 4.83 2.3 550DC 1715 44.7 31.6 8.93 11.6 124.8 6.24 3.8 680DD 1715 50.9 34.2 10.17 7.8 108.9 5.45 2.9 680DE 1635 51.8 34.5 10.37 8.3 120.6 6.03 3.5 680

200

DA 1990 48.9 36.9 9.77 13.6 120.6 6.03 3.5 790DC 1895 53.4 38.6 10.68 15.9 134.1 6.71 4.3 770DD 1895 60.8 41.8 12.17 10.7 116.7 5.83 3.3 770DE 1770 63.0 42.5 12.59 11.8 127.7 6.38 3.9 750

Performance DataD-Coils

22 UV-PRC004-EN

Table P5: 2-Pipe coil, HW data Table P6: 2-Pipe coil, CW data Unit Size Coil

TypeHeating (60 EAT, 180 EWT/140 LWT) Unit

SizeCoilType

Cooling (80/67 EAT, 45 EWT/55 LWT)TMBH GPM WPD TMBH SMBH GPM WPD

075

H1 41.18 2.06 2.85075

X1 25.20 17.50 5.04 3.80H2 45.12 2.26 3.36 X2 25.20 17.50 5.04 3.80H3 48.74 2.44 3.86 X3 25.20 17.50 5.04 3.80H4 53.49 2.67 0.70

100X1 34.90 23.70 6.98 8.10

H5 57.95 2.90 0.81 X2 34.90 23.70 6.98 8.10H6 61.84 3.09 0.91 X3 34.90 23.70 6.98 8.10

100

H1 52.90 2.65 0.97125

X1 37.50 26.80 7.50 7.50H2 57.98 2.90 1.15 X2 37.50 26.80 7.50 7.50H3 62.65 3.13 1.33 X3 37.50 26.80 7.50 7.50H4 71.90 3.59 1.41

150X1 49.50 33.80 9.91 7.40

H5 77.92 3.90 1.63 X2 49.50 33.80 9.91 7.40H6 83.19 4.16 1.84 X3 49.50 33.80 9.91 7.40

125

H1 66.45 3.32 1.67200

X1 68.55 48.58 13.71 13.25H2 72.85 3.64 1.98 X2 68.55 48.58 13.71 13.25H3 78.73 3.94 2.28 X3 68.55 48.58 13.71 13.25H4 90.36 4.52 2.45H5 97.97 4.90 2.83H6 104.61 5.23 3.19

150

H1 99.89 4.99 2.70H2 124.35 6.22 4.03H3 131.66 6.58 4.48H4 108.87 5.44 3.88H5 118.05 5.90 4.49H6 126.08 6.30 5.05

200

H1 120.35 6.02 3.80H2 152.05 7.60 5.84H3 161.68 8.08 6.54H4 132.52 6.63 5.52H5 144.37 7.22 6.44H6 154.87 7.74 7.32

Performance DataH, X-Coils

UV-PRC004-EN 23

Table P7: 4-Pipe FA coil, HW data Table P8: 4-Pipe DK coil, CW dataUnit Size

CoilType

Heating (60 EAT, 180 EWT/140 LWT) Unit Size

CoilType

Cooling (80 EDB/67 EWB, 45 EWT/55 LWT)TMBH GPM WPD TMBH SMBH GPM WPD

075

FA

53.61 2.68 0.59 075

DK

16.60 13.30 3.33 1.30100 72.06 3.60 1.14 100 24.70 18.30 4.94 3.10125 90.57 4.53 1.91 125 34.00 24.50 6.79 6.30150 102.98 5.15 2.63 150 39.40 27.70 7.87 9.20200 136.30 6.81 4.45 200 45.24 33.11 9.04 11.83

Table P9: 4-Pipe R1, R2 coil, HW data Table P10: 4-Pipe R1, R2 coil, CW dataUnit Size

CoilType

Heating (60 EAT, 180 EWT/140 LWT) Unit Size

CoilType

Cooling (80 EDB/67 EWB, 45 EWT/55 LWT)TMBH GPM WPD TMBH SMBH GPM WPD

075R1 30.38 1.52 1.66

075R1 25.19 17.89 5.04 3.82

R2 36.27 1.81 2.29 R2 28.08 19.79 5.62 4.62

100R1 38.03 1.90 0.54

100R1 35.52 24.60 7.10 8.40

R2 45.30 2.27 0.74 R2 39.29 27.12 7.86 10.04

125R1 48.31 2.42 0.94

125R1 41.75 29.61 8.35 4.85

R2 57.62 2.88 1.30 R2 46.73 32.88 9.35 5.93

150R1 68.42 3.42 1.36

150R1 52.11 36.32 10.42 8.11

R2 81.16 4.06 1.85 R2 58.02 40.24 11.60 9.82

200R1 81.33 4.07 1.86

200R1 62.79 44.78 12.56 11.32

R2 96.80 4.84 2.56 R2 71.72 50.61 14.34 14.37

Performance DataFA, DK, R1, R2-Coils

24 UV-PRC004-EN

Table P11: Direct expansion cooling capacity

Note: DX coils are rated at 95 F ambient outside air temperature, 25-feet of tubing, 400, CFM per ton maximum. Use the air handler program, TUV for unit ventilators.

Unit Size Condensing unit

EWBDegrees F

TMBH EDB 72 F

SMBH

EDB 76 F

SMBH

EDB 80 F

SMBH

075

TTB018

10.00 SEER

63 15.70 10.10 12.30 14.6067 17.00 7.70 10.00 12.2071 18.30 5.30 7.50 9.80

TTP018

12.00 SEER

63 16.40 10.40 12.70 14.9067 17.90 8.10 10.30 12.5071 19.40 5.70 7.90 10.10

TTP024

12.00 SEER

63 20.20 11.80 14.00 16.3067 22.00 9.50 11.70 13.9071 23.90 7.10 9.40 11.60

100

TTP024

12.00 SEER

63 21.20 13.80 16.80 19.8067 23.00 10.60 13.60 16.6071 24.90 7.30 10.30 13.30

TTB024

10.00 SEER

63 20.00 14.60 18.10 20.5067 21.60 10.90 14.40 17.9071 23.30 7.00 10.60 16.90

2TTA2030

12.00 SEER

63 25.00 16.30 19.60 23.1067 27.20 12.70 16.10 19.5071 29.50 9.10 12.40 15.90

125

TTB030

10.00 SEER

63 27.60 19.10 23.50 27.7067 29.80 14.50 18.90 23.2071 32.10 9.80 14.10 18.50

2TTA2030

12.00 SEER

63 27.30 17.10 20.80 24.5067 29.50 13.20 16.90 20.6071 31.90 9.30 13.00 16.60

TTA030

10.00 SEER

63 27.80 19.20 23.50 27.8067 30.00 14.50 18.90 23.2071 32.30 9.80 14.10 18.50

TTB036

10.00 SEER

63 32.40 20.90 25.20 29.5067 34.80 16.20 20.50 24.9071 37.30 11.50 15.80 20.10

150

TTB036

10.00 SEER

63 33.80 23.30 29.20 33.7067 36.20 17.70 22.90 28.1071 38.70 11.90 17.10 22.30

2TTA2036

12.00 SEER

63 33.70 22.40 27.40 31.1067 36.40 17.20 22.10 27.1071 39.10 11.90 16.80 21.70

TTB042

10.00 SEER

63 40.50 25.90 31.00 36.2067 43.50 20.30 25.40 30.6071 46.60 14.60 19.70 24.90

TTA042

10.00 SEER

63 40.30 25.80 30.90 36.1067 43.50 20.30 25.40 30.6071 46.90 14.70 19.80 25.00

200

2TTA2042

12.00 SEER

63 36.50 25.10 31.00 35.2067 39.60 18.70 24.60 30.6071 42.70 12.20 18.10 24.00

2TTA2048

12.00 SEER

63 45.60 30.40 37.10 43.9067 49.40 23.20 29.80 36.7071 53.40 15.80 22.60 29.30

TTA060

10.00 SEER

63 50.90 32.00 38.50 45.0067 54.50 24.80 31.30 37.9071 58.20 17.50 24.00 30.60

Performance DataDX-Coils

UV-PRC004-EN 25

Table P12: Electric heat capacityUnit Size Coil Type No of Elem Elem kW Total kW TMBH

075

F3, X3 3 1.95 5.85 19.98E4, F4, X4 4 1.95 7.80 26.64E6, F6, X6 6 1.95 11.70 39.96

E7 7 1.95 13.65 46.61E9 9 1.95 17.55 59.93

100

F3, X3 3 2.60 7.80 26.64E4, F4, X4 4 2.60 10.40 35.52E6, F6, X6 6 2.60 15.60 53.27

E7 7 2.60 18.20 62.15E9 9 2.60 23.40 79.91

125

F3, X3 3 3.25 9.75 33.30E4, F4, X4 4 3.25 13.00 44.40E6, F6, X6 6 3.25 19.50 66.60

E7 7 3.25 22.75 77.69E9 9 3.25 29.25 99.89

150

F3, X3 3 3.80 11.40 38.91E4, F4, X4 4 3.80 15.20 51.91E6, F6, X6 6 3.80 22.80 77.86

E7 7 3.80 26.60 90.84E9 9 3.80 34.20 116.79

200

F3, X3 3 3.80 11.40 38.93E4, F4, X4 4 3.80 15.20 51.91E6, F6, X6 6 3.80 22.80 77.86

E7 7 3.80 26.60 90.84E9 9 3.80 34.20 116.79

Performance DataElectric Heat

26 UV-PRC004-EN

Table P13: Steam coil capacityUnit Size

Coil Type EAT TMBH5 PSIG

TMBH10 PSIG

TMBH15 PSIG

075

K1 -20 85.89 89.98 93.48K1 0 78.94 83.04 86.54K1 20 72.00 76.10 79.59K1 40 65.06 69.16 72.65K1 60 58.12 62.21 65.71K1 70 54.65 58.74 62.24K2 -20 101.18 106.01 110.12K2 0 93.00 97.83 101.94K2 20 84.82 89.65 93.77K2 40 76.64 81.47 85.59K2 60 68.46 73.29 77.41K2 70 64.38 69.20 73.32

100

K1 -20 112.93 118.31 122.91K1 0 103.80 109.19 113.78K1 20 94.67 100.06 104.65K1 40 85.54 90.93 95.52K1 60 76.41 81.80 86.40K1 70 71.85 77.24 81.83K2 -20 158.08 165.61 172.05K2 0 145.30 152.84 159.27K2 20 132.52 140.06 146.49K2 40 119.74 127.28 133.71K2 60 106.96 114.50 120.93K2 70 100.57 108.11 114.55

125

K1 -20 139.94 146.61 152.31K1 0 128.63 135.30 140.99K1 20 117.31 123.99 129.68K1 40 106.00 112.68 118.37K1 60 94.69 101.36 107.06K1 70 89.03 95.71 101.40K2 -20 164.93 172.79 179.50K2 0 151.60 159.46 166.17K2 20 138.26 146.13 152.84K2 40 131.78 132.80 139.51K2 60 111.60 119.47 126.18K2 70 104.93 112.80 119.51

150

K1 -20 166.93 174.89 181.68K1 0 153.44 161.40 168.19K1 20 139.94 147.90 154.70K1 40 126.45 134.41 141.20K1 60 112.96 120.92 127.71K1 70 106.21 114.17 120.96K2 -20 243.70 256.14 263.74K2 0 224.72 236.38 246.33K2 20 204.96 216.62 226.57K2 40 185.20 196.86 206.80K2 60 165.43 177.09 187.04K2 70 155.55 167.21 177.16

200

K2 -20 286.51 306.05 317.93K2 0 266.20 282.43 294.32K2 20 244.09 258.82 270.71K2 40 221.28 235.21 274.09K2 60 197.66 211.59 223.48K2 70 185.86 199.79 211.67

Performance DataK1, K2 Steam Coils

Note:1. Condensate trap for the steam coil

option is field installed.2. Static pressure for the K1, K2 op-

tions should be modeled after the H1 coil option.

3. Steam coils that function at 5 psig or less should not utilize valve control. Valve control may starve the coil, causing stratification.

UV-PRC004-EN 27

Performance DataDK, FK Steam Coils

Note:Steam pressure below 8 psi is not recommended.

28 UV-PRC004-EN

Table E1: Minimum Circuit Ampacity for standard motors Table E2: Minimum Circuit Ampacity for high static motors

Table E3: Minimum Circuit Ampacity for electric heat coils with standard motors

Table E4: Additional MCA

Note: For Trane controls, add the abovevalues to determine total MCA.

Unit Size

HP Amps Unit Size

HP Amps

075 1/6 (.17) 2.5 075 1/3 (.33) 4.8100 1/6 (.17) 2.5 100 1/3 (.33) 4.8125 1/4 (.25) 2.7 125 1/2 (.50) 7.0150 1/4 (.25) 2.7 150 1/2 (.50) 7.0200 1/3 (.33) 5.7 200 3/4 (.75) 8.1

Unit Size No of ElemCoilkW

208V1ph

240V1ph

277V1ph

208V3ph

240V3ph

480V*3ph

075

3

5.85 36.49 31.63 27.40 21.66 18.77 9.38100 7.8 48.21 41.78 36.20 28.43 24.64 12.32125 9.75 60.32 52.28 45.29 35.59 30.85 15.42150 11.4 70.23 60.87 52.87 52.74 41.33 35.82200 11.4 72.35 62.70 54.33 43.44 37.65 18.82075

4

7.8 48.21 41.78 36.20 32.34 28.03 14.01100 10.4 63.83 55.32 47.93 42.67 36.98 18.49125 13.0 79.85 69.20 59.96 53.40 46.28 23.14150 15.2 93.07 80.66 69.89 62.14 53.86 26.93200 15.2 95.19 82.49 71.48 64.26 55.69 27.85075

6

11.7 NA 62.09 53.80 41.98 36.38 18.19100 15.6 NA 82.41 71.40 55.52 48.12 24.06125 19.5 NA 103.06 89.29 69.46 60.20 30.10150 22.8 NA 120.24 104.18 80.93 70.14 35.07200 22.8 NA 122.08 105.77 83.04 71.97 35.98075

7

13.65 NA NA 62.60 52.41 45.43 22.71100 18.2 NA NA 83.13 69.44 60.18 30.09125 22.75 NA NA 103.96 86.86 75.28 37.64150 26.6 NA NA 121.33 101.27 87.76 43.88200 26.6 NA NA 122.92 103.38 89.60 44.80075

9

17.55 NA NA NA 62.30 53.99 27100 23.4 NA NA NA 82.62 71.60 35.80125 29.25 NA NA NA 103.33 89.55 44.78150 34.2 NA NA NA 120.53 104.46 52.23200 34.2 NA NA NA 122.64 106.29 53.15

Volts Amps120 0.94208 0.55240 0.48277 0.41480 0.41

Performance DataElectrical

UV-PRC004-EN 29

Table E5: Minimum Circuit Ampacity for electric heat coils with high static motor

Table E6: Additional MCA

Note: For Trane controls, add the abovevalues to determine total MCA.

Unit Size No of ElemCoilKW

208V1ph

240V1ph

277V1ph

208V3ph

240V3ph

480V*3ph

075

3

5.85 38.74 33.58 29.09 23.91 20.72 10.36100 7.8 50.46 43.73 37.89 30.68 26.59 13.30125 9.75 63.67 55.18 47.81 38.94 33.75 16.87150 11.4 73.58 63.77 55.25 44.67 38.72 19.36200 11.4 74.13 64.25 55.67 45.23 39.20 19.60075

4

7.8 50.46 43.73 37.89 34.59 29.98 14.99100 10.4 66.09 57.28 49.63 44.93 38.94 19.47125 13.0 83.20 72.10 62.47 56.75 49.18 24.59150 15.2 96.42 83.56 72.40 65.49 56.76 28.38200 15.2 96.97 84.04 72.82 66.04 57.24 28.62075

6

11.7 NA 64.05 55.49 44.23 38.33 19.17100 15.6 NA 84.36 73.09 57.78 50.07 25.04125 19.5 NA 105.96 91.81 72.81 63.10 31.55150 22.8 NA 123.15 106.70 84.27 73.04 36.52200 22.8 NA 123.63 107.11 84.83 73.52 36.76075

7

13.65 NA NA 64.29 54.67 47.38 23.69100 18.2 NA NA 84.82 71.70 62.14 31.07125 22.75 NA NA 106.47 90.21 78.18 39.09150 26.6 NA NA 123.84 104.61 90.67 45.33200 26.6 NA NA 124.26 105.17 91.14 45.57075

9

17.55 NA NA NA 64.55 55.95 27.97100 23.4 NA NA NA 84.87 73.56 36.78125 29.25 NA NA NA 106.68 92.46 46.23150 34.2 NA NA NA 123.87 107.36 53.68200 34.2 NA NA NA 124.43 107.84 53.92

Volts Amps120 0.94208 0.55240 0.48277 0.41480 0.41

Performance DataElectrical (High Static)

30 UV-PRC004-EN

Glycol in an HVAC SystemBecause the detrimental effects of gly-col are lower at high temperatures, lit-tle concern is given to capacity loss or increased pump power when glycol is added to heating systems. This is why it is not uncommon to see glycol per-centages up to 40 percent in the heat-ing loop of a system. However, the same is not true for cooling systems. Concentrations of this level are intoler-able in cooling systems where fluid temperatures are lower. The viscosity of the glycol increases as the tempera-ture of the mixture drops. This not only decreases the effectiveness of the heat transfer, but it also makes the mixture more difficult to pump. To make things worse, as the percentage of glycol increases, the risk of having laminar flow in the coil increases. This again is because glycol is more vis-cous than water.With these effects in mind it is impor-tant to use a minimum amount of gly-col to protect the HVAC system.

Burst Protection vs. Freeze Protection • Burst protection is sufficient in

systems where there is adequate space to accommodate the expansion of an ice/slush mix-ture. The protection works as fol-lows: As the temperature drops below the solution’s freeze point, ice crystals begin to form. Because the water freezes first, the remaining glycol solution is further concentrated and remains fluid. The combination of ice crys-tals and fluid make a flowable slush. The volume increases as this slush forms and flows into the available expansion volume (usually an expansion tank). When a sufficient concentration of glycol is present, no damage to the system will occur.

• Freeze protection is required in cases where no ice crystals can be permitted to form or where

there is inadequate expansion volume available. HVAC systems intended to start-up in cold weather after prolonged winter shutdowns may require freeze protection. Table 8 is provided by Dow Chemical Co. for its ethylene and propylene glycol products.

Performance DataGlycol Correction Factors

Table 8: Percentage volume glycol concentration

Table 8 shows that a 30 percent ethylene glycol solution is enough to protect a system down to -60 degree F. Because of the benefits of burst protection, excessive glycol only degrades the heat transfer and increases the pressure drop of the fluid without providing additional system protection. Use glycol correctly.

TemperatureDegree F

For Freeze Protection For Burst ProtectionEthylene Glycol Propylene Glycol Ethylene Glycol Propylene Glycol

20 16% 17% 11% 11%10 25% 26% 17% 18%0 33% 34% 22% 23%

-10 39% 41% 26% 28%-20 44% 45% 30% 30%-30 48% 49% 30% 33%-40 52% 51% 30% 35%-50 56% 53% 30% 35%-60 60% 55% 30% 35%

UV-PRC004-EN 31

Performance DataGlycol Correction Factors

Glycol Correction FactorsThe following four charts give the correction factors for capacity and water pressure drops for both ethylene and propylene glycol. There are two charts for chilled water and two for hot water. The charts are approximations of coil performance for any Trane coil selected for a unit ventilator. The correction factor lines grow broader as the percentage of glycol increases to include all coils in the chart. For example, a one row coil and a four row coil will have different operating characteristics, but the correction factors are usually within 5% of each other.(See Charts 1-4)

Chart 1: Correction factors for Ethylene Glycol inchilled water at a constant gpm

Chart 2: Correction factors for Propylene Glycol inchilled water at a constant gpm

Chart 3: Correction factors for Ethylene Glycol inhot water at a constant gpm

Chart 4: Correction factors for Propylene Glycol inhot water at a constant gpm

32 UV-PRC004-EN

Table S1 reflects sound power ratings for the horizontal classroom unit ventilator. To calculate the noise criteria (NC) for a unit, subtract the actual room effect from the sound power number in each octave band. These numbers may be graphed on a NC chart. Note: Because room affects vary greatly, request exact numbers per the specific job from the design engi-neer. By obtaining these exact numbers, the most accurate results of the installed unit may be calculated.

Data obtained in the reverberant rooms conforming to ANSI S12.31 and ANSI S12.32

Table S1: Horizontal octave band sound power ratings (sound power in db ref: 10-12 watts)Octave Band 1 2 3 4 5 6 7 8

Center of Frequency 63 125 250 500 1000 2000 4000 8000075 High Speed 66 67 61 60 56 53 48 41075 Low Speed 62 64 58 57 52 49 43 35100 High Speed 66 67 61 60 56 52 48 41100 Low Speed 59 61 55 54 43 45 38 29125 High Speed 70 71 65 64 60 56 51 44125 Low Speed 65 67 61 62 55 50 44 36150 High Speed 65 68 62 60 56 52 45 38150 Low Speed 57 63 54 53 47 42 33 25200 High Speed 73 75 68 64 60 57 53 45200 Low Speed 64 74 59 60 49 45 37 29

Performance DataAcoustical

UV-PRC004-EN 33

Factory Installed Piping PackagesTrane’s factory mounts piping packages for hydronic specified coils when Tracer ZN520 or end-device controls are desig-nated. (Note: Valves for steam coils are not factory piped.)

Piping packages are available in either 2-way, or 3-way configurations. The 3-point floating valve is piped on the return side of the coil. Piping packages are factory leak tested to 90 psig to ensure joint integrity. (Note: Insulation for the piping pack-ages is field provided and field installed.)

PipingFactory Installed

34 UV-PRC004-EN

Water Pressure Drops in (feet) for unit ventilator 2-way and 3-way Piping Packages

Table 11: Control valve pressure drop

Table 8: 1.9 Cv rated valves in 1/2" piping packages

Piping Pkg Cv Rating 2 GPM 3 GPM 4 GPM 5 GPM 6 GPM 7 GPM

A Basic Pkg 1.9 3.2 7.1 12.6 19.5 28.0 38.1

C w/ CBV 1.9 5.2 11.7 20.7 32.3 46.4 63.1

D w/ Strainer & CBV 1.9 5.5 12.4 22.0 34.2 49.2 66.8


Piping Pkg Cv Rating 5 GPM 6 GPM 7 GPM 8 GPM 9 GPM 10 GPM 11 GPM 12 GPM 13 GPM 14 GPM

A Basic Pkg 4.7 4.5 6.3 8.5 11.0 13.7 16.8 20.2 23.9 27.9 32.1

C w/ CBV 4.7 17.2 24.7 33.5 43.6 55.1 67.9 - - - -

D w/ Strainer & CBV 4.7 19.1 27.4 37.2 48.5 61.3 75.5 - - - -


Piping Pkg Cv Rating 9 GPM

10 GPM

11 GPM

12 GPM

13 GPM

14 GPM

15 GPM

16 GPM

17 GPM

18 GPM

19 GPM

20 GPM

A Basic Pkg 6.6 4.8 5.9 7.1 8.4 9.8 11.4 13.0 14.8 16.7 18.7 20.8 23.0

C w/ CBV 6.6 16.8 20.7 25.1 29.8 34.9 40.5 46.5 - - - - -

D w/ Strainer & CBV 6.6 21.2 26.2 31.7 37.7 44.2 51.2 58.8 - - - - -

2-Way or 3-WayWater Valves

2GPM

3GPM

4GPM

5GPM

6GPM

7GPM

8GPM

9GPM

10GPM

11GPM

12GPM

13GPM

14GPM

15GPM

16GPM

17GPM

18GPM

19GPM

20GPM

1/2" - 1.9 Cv 2.85(ft)

6.42(ft)

11.41(ft)

17.82(ft)

25.67(ft)

34.94(ft)

1/2" - 4.7 Cv 2.73(ft)

3.93(ft)

5.35(ft)

6.99(ft)

8.84(ft)

10.92(ft)

13.21(ft)

15.72(ft)

18.45(ft)

21.4(ft)

24.56(ft)

27.95(ft)

3/4" - 6.6 Cv 3.51(ft)

4.33(ft)

5.25(ft)

6.24(ft)

7.33(ft)

8.50(ft)

9.75(ft)

11.10(ft)

12.53(ft)

14.04(ft)

15.65(ft)

17.34(ft)

PipingFactory Installed

UV-PRC004-EN 35

Why Trane Controls?Whether involved in a retrofit or in new construction applications, Trane has the control design to fit the systems require-ments. The broad range of control packages offer a range from a field convertible end-device package, to a complete build-ing automation system solution with LonTalk controls.

The good news is...Trane controls (ZN520), are factory tested and commissioned with Trane application expertise to pro-vide comfort, efficiency, and reliability, as well as, single-source warranty and service. With Trane’s integrated controls, theinstalled costs are lower because the equipment has turn-key factory controls and every component of the system is opti-mized to fit with the controller. Trane installs not only the controller, but also the hardware that works intimately with thecontroller to allow the system to function properly (i.e., piping package, valves, dampers, actuators, etc.). When a class-room unit ventilator with Trane controls arrives to the jobsite, it is completely ready for quick installation and operation toany LonTalk front-end system.

The following chart explains the difference in the control design.GRAPHIC DESCRIPTION APPLICATION ICS PROTOCOL WHERE TO FIND

No Controls/Field Installed

Unit comes equipped with an auto transformer, fan speed switch and a damper blade only.

In a retrofit market where a non Trane controller has been applied to the building.

No Not Available

End-Device Package

(EDP)

A pre-wired (to a termi-nal strip) control offer-ing of selected control components. The EDP is ready for a field pro-vided controller and temperature sensor.

Retrofit market where single and multiple unit replace-ment occurs.

New building design where field provided controls are specified.

No Not Available Page 36

Tracer ZN520TM Direct Digital Control board designed to pro-vide control of the HVAC equipment, as well as total building management.

Retrofit market where overall system upgrade is specified.

Multi-unit (±100) installation where units are linked by a common twisted pair of wire for a communication link.

Yes LonTalkTM Page 37

Controls

36 UV-PRC004-EN

End Device PackageThe direct digital control (DDC) end de-vice package is a prewired control of-fering of selected control components allowing any control vendor to easily interface with the Trane unit ventila-tor.

The DDC end device package consists of the following factory wired compo-nents. See Figure 6. The single con-nection terminal strip is located in the left hand end pocket of the unit venti-lator. The unit is shipped from the fac-tory with an UL listing.

• A NEC Class 2 type transformer with a primary side of 120 VAC and a secondary side of 24 VAC at 75 VA. The transformer is manually resettable.

• The fan start/stop relay is a dou-ble pole/double throw relay rat-ed for 20-amps at 120/240 VAC.

• A 10-pole terminal block is rated for 20-amps at 300 volts.

• An optional low temperature de-tection thermostat has a vapor pressure type element strung along the face of the coil. If one inch of this element falls below 38-degrees F, it is designed to shut the outside air damper and turn off the fan motor. The de-vice is manually reset and has a contact rating of 8.3 FLA at 240 volts.

Once the basic package is selected, the following options are also available:

• Control valve(s). 3-point floating ONLY. 2-way and 3-way.

• Face and bypass isolation valve. 2-position, 2-way spring return ONLY.

• Face and bypass damper actua-tor. 3-point ONLY.

• OA/RA actuator. 3-point floating or 2-10 V available.

• Piping package

Valves/Piping PackageControl valves are mounted in a facto-ry piping package to include unions at the coil, p/t ports on the supply and re-turn lines, and shut-off ball valve on the supply and return.

Cooling and heating coil valves are only available as 3-point modulating, non-spring return type valves. Stroke time is approximately 140-seconds. The ambient temperature range is -32 F to 150 F.

Face & Bypass Damper ActuatorAn optional face and bypass actuator is 24-volt, 3-point modulating, non-spring return. In-coming power is 24 VAC with a consumption of 2-watts. Maximum torque of 35 in/lb and drive time is 180-seconds.

Note: Face and bypass is available with all units ventilator coils, with ex-ception of DX and electric heat.

Outside/Return-Air Damper ActuatorOptional outside-air/return-air actua-tor is spring return and takes a 3-point floating signal. A 2-10 VDC option is also available. It provides 25 in/lb of torque with a drive time of 90-seconds. The power consumption is 7 VA with temperature limits of -25 F to 125 F.

Fan Start/Stop RelayThe fan start/stop relay enables the fan start and stop. The fan’s speed is con-trolled by a unit mounted fan switch.

ControlsEnd Device Package

Figure 6: Factory mounted EDP add-ons

UV-PRC004-EN 37

Tracer ZN520 Zone ControllerThe ZN520 is a factory installed, tested an commissioned LonTalk control de-signed to provide control of the class-room unit ventilator, and the fan coil products. Figure 7.

Figure 7: ZN520 control board

The ZN520 controller is designed to be used in the following applications:

• As part of the Trane Tracer Sum-mit building automation system, the Tracer ZN520 becomes an important part of the Trane Inte-grated Comfort system (ICS).

• The ZN520 can function as a com-pletely standalone controller in situations where a building auto-mation system (BAS) is not present.

• For situations when a non-Trane BAS is present, the ZN520 can be used as an interoperable unit controller.

Through building management of the HVAC system, optimizing energy con-sumption becomes possible at a class-room level. Each unit is capable of functioning independently of one an-other during occupied and unoccupied hours of the day. This allows the tem-perature setpoint and ventilation set-ting to be changed automatically based on classroom usage. See Figure 8 for Tracer ZN520 system.

Two Systems in OneIn an ICS environment, the ZN520 is pre-designed to install quickly and easily into the system. Since the con-troller and the unit are factory tested and commissioned, the start-up time for the entire system is minimized. Trane becomes the single source of re-sponsibility for the equipment, unit controls, and building automation sys-tem.

As a standalone controller, the ZN520 is ideally suited for fix-on-fail replace-ment of units with old pneumatic con-trollers, or in situations where a BAS will be added at a later date. Once power is applied to the controller, it will automatically start up and run based upon the setpoint on the local zone sensor. An individual time clock can be added to the unit for local scheduling.

The ZN520 is certified to the interoper-able LonMark Space Comfort Control-ler profile. This allows the controller to be used with another vendor’s BAS and thereby still provide the high qual-ity of factory installation and testing. In addition, the ZN520 provides one of the most extensive interoperable data lists of any controller of its type in the industry.

ControlsTracer ZN520

Figure 8: Tracer ZN520 system

38 UV-PRC004-EN

ZN520 features include:Automatic Fan and Ventilation ResetWith the ZN520 controller, a two speed fan control for the unit ventilator deliv-ers the airflow ouput customized to support the cfm space needs. When less cfm is necessary to meet the load of the classroom (typically 75 to 80 percent of the time), the equipment operates on low speed. However, if the room temperature rises, the controller will switch to high speed, and the out-side air damper will adjust to satisfy the space needs. This helps maintain the proper amount of ventilation air to the occupants independent of the fan speed. As part of the ventilation strat-egy, the controller will reposition the outside air damper to confirm the min-imum outside air cfm is met at both operating conditions.

Manual Output Test The ZN520 controller includes a manu-al output test function. This function may be initiated from the blue test push button on the controller or through RoverTM. This feature is used to manually exercise the outputs in a defined sequence.

The purpose of this test sequence is to verify output and end device opera-tion. The manual output test function may also be used in thefollowing situations:

• Reset latching diagnostics

• Verify output wiring and operation

• Force the water valve(s) open to balance the hydronic system dur-ing installation set-up or service.

Filter MaintenanceFilter status for the controller is based on the cumulative run hours of the unit fan. The controller compares the amount of fan run time against an ad-justable fan run hour (stored in the controller) to determine when mainte-nance is recommended for the unit. The run-hours value may be user edit-

ed as required (through Rover). The valid range for the fan run hours limit is 0 to 5000 hours with a default of 600 hours. Once the run hours limit has been exceeded, the controller gener-ates a maintenance required diagnos-tic (unit will not shut-down). The user will be notified of this diagnostic through the building automation sys-tem or when a Trane Service Tool is communicating with the controller.

Active DehumidificationOn unit ventilators with reheat coils, the ZN520 can provide active dehu-midification to the classroom. This means that the classroom relative hu-midity can be kept below an adjustable setpoint independent outdoor weather conditions. Indoor humidity levels are recommended by ASHRAE to be kept below 60% in order to minimize micro-bial growth and the life span of air-borne illness causing germs.

Master Slave (Data Sharing)Because the ZN520 controller utilizes LonWorksTM technology, the control-ler can send or receive data (setpoint, heat/cool mode, fan request, space temperature, etc.) to and from other controllers on the communication link with or without the existence of a building automation system. This ap-plies to applications where multiple units might share one zone sensor for both stand-alone (with communica-tion wiring between units) and a build-ing automation system. See Figure 9 for master slave system layout.


Figure 9: Master slave system layout

UV-PRC004-EN 39

Water Valve OverrideThe ZN520 can be commanded via the Rover service tool to open all hydronic valves 100%. This allows for the faster water balancing of each unit and the entire system when the command is sent globally to all controllers. A prop-erly balanced system is essential for proper and efficient operation.

Hydronic Coil Freeze Protection (Freeze Avoidance)Unit ventilator systems in cold cli-mates need to take precautions to avoid hydronic coil freeze-up. The ZN520 does this from three different aspects. Any of these methods of pro-tections will result in the unit fan being disabled, the outside air damper being shut, and the hydronic valves being opened 100%.

The three methods of freeze avoid-ance include:

1 A binary freeze protection ther-mostat is mounted on the coil and will cause a latching diag-nostic if the coil temperature falls below 35 F.

2 An analog discharge air sensor monitors the temperature of the air coming off of the coil and if the temperature falls be-low 40 F the outside air damper is closed, the fan is turned off and the valves are fully opened.

3 When in the unoccupied mode the ZN520 has an adjustable freeze avoidance setpoint. If the outside air temperature is be-low the setpoint the unit will open the valves to allow water to flow through the coils.

InteroperabilityInteroperability allows the owner free-dom to select multiple vendors, and multiple products. With this advan-tage, the owner can choose the best products, the best application, and the best service from a variety of suppliers to meet their evolving building control needs in a cost effective manner.

Generic Binary Input/OutputThe three generic binary inputs/out-puts are not part of the normal control, but are actually controlled through he Tracer Summit system (when present) to issue commands to the ZN520 con-trol to turn the generic inputs/outputs of add-on equipment (such as base-board heating, exhaust fans, occupan-cy sensor, lighting, etc.) on and off. This binary port is not affected when other binary diagnostics interrupt unit operation.


40 UV-PRC004-EN

ControlsActuators & Stroketimes

Table 13: Outside Air Actuator Specification

Power Supply 24 VAC ± 20% 50/60 HZ

24 VAC ± 10%

Power Consumption

Running: 2.5 WHolding: 1 W

Tranformer Sizing

5 VA (class 2-power source)

Overload Protection

Electronic throughout 0 to 95-degree rotation

Control Signal 2 to 10 VDC3-point floating with Trane controls

Angle of Rotation

Maximum 95-degreeAdjustable with mechanical stop

Torque 35-inch/lbDirection of Rotation

Spring return reversible with CW/CCW mounting

Position Indication

Visual indicator, 0 to 95-degrees

Run Time(nominal)

90-second constant (independent of load)

Noise Level Running: 30 dB

Table 12: Face and Bypass Actuator Specification

Power Supply 24 VAC ± 20% 50/60 HZ

24 VAC ± 10%

Power Consumption

2 W

Transformer Sizing

3 VA (class 2-power source)

Angle of Rotation

Maximum 95-degreeAdjustable with mechanical stop

Torque 35-inch/lbDirection of Rotation

Reversible with switch L/R

Position Indication

Clip-on indicator

Run Time(nominal)

90-second constant

Manual Override

External push button

Noise Level Less than 35 dBControl Signal 3-point floating

Table 14: Valve Stroke time ValuesSTROKE TIME ZN520

Coil Type HEAT byte126 COOL byte 125DX/HW Preheat

105 205 0 NA - DX105 251 0 NA - DX105 254 0 NA - DX105 208 0 NA - DX

2-Pipe Changeover

105 183 105 78105 149 105 123105 188 105 126105 148 105 8045 187 45 12145 149 45 80

2-Pipe HW 105 183 0 NA105 149 0 NA105 188 0 NA105 148 0 NA45 187 0 NA45 149 0 NA

4-Pipe CW/Preheat HW

105 205105 251105 254105 208

105 78105 123105 126105 8045 12145 80

Table 14: Valve Stroke time ValuesSTROKE TIME ZN520

Coil Type HEAT byte126 COOL byte 1254-Pipe CW/

Steam85 1685 2485 16

105 78105 123105 126105 8045 12145 80

4-Pipe CW/HW Reheat

105 205105 251105 254105 208

105 78105 123105 126105 8045 12145 80

2-Pipe CW/Electric Heat

NA - ELC NA - ELC 105 78NA - ELC NA - ELC 105 123NA - ELC NA - ELC 105 126NA - ELC NA - ELC 105 80NA - ELC NA - ELC 45 121NA - ELC NA - ELC 45 80

UV-PRC004-EN 41

ControlsField Installed Wiring

Field Installed Controls DX Units Only120V-1 Speed Unit Mounted Fan Switch

42 UV-PRC004-EN

ControlsField Installed Wiring

Field Installed Controls Hydronic and Steam Coils120V-2 Speed Unit Mounted Fan Switch

UV-PRC004-EN 43

ControlsElectric Heat-DX

Control Diagram460V, 3-Phase, 4-Wire Electric Heat-DX Cooling

44 UV-PRC004-EN

ControlsElectric Heat-4 Wire

Power Diagram480 Volt, 3-Phase, 4-Wire Electric Heat

Note: This is a 4-wire system requiring L1, L2, L3, Neutral and equipment ground.

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ControlsEnd Device Package

End Device Controls120V, 4-Pipe Hot Water/Chilled Water

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ControlsZN520

ZN520 Controls208V, 4-Pipe Hot Water/Chilled Water

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Dimensional DataDucted Front Discharge

Horizontal Unit Sizes 075-150

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Dimensional DataDucted Front Discharge

Horizontal Unit Size 200

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Dimensional DataDouble Deflection Discharge

Horizontal Unit Sizes 075-150Bottom Double Deflection Discharge

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Dimensional DataDouble Deflection Discharge

Horizontal Unit Size 200Bottom Double Deflection Discharge

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Dimensional DataInlet/Discharge Arrangements

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Dimensional DataInlet/Discharge Arrangements

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Dimensional DataDrain Pan Connection

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AccessoriesSensors

Sensor Part Number/Specifications Available onX13510606020 (external adjustment) or X13510627010 (internal adjustment) Option 7 (2-Spd), 9 (1-Spd) or 8

• Thermostat Override (TOV) and cancel.• Fan speed switch is unit mounted.

• ZN520 with communication jack

X13510618010 (external adjustment) or X13511045010 (internal adjustment) Option T or V

• Thermostat Override (TOV) and cancel.• Fan speed switch includes HIGH-LOW-AUTO-OFF.


X13510622010 (external adjustment) or X13510631010 (internal adjustment) Option B or D

• Thermostat Override (TOV) and cancel.• Fan speed switch includes HIGH-LOW-OFF.


X13510621010 (external adjustment) Option A (used on electric heat coils)

• Thermostat Override (TOV) and cancel.• Fan speed switch includes RUN-OFF.


X13510635010 (external adjustment) Option U (used on electric heat coils)

• Thermostat Override (TOV) and cancel.• Fan speed switch includes AUTO-OFF.


X13511046010 (external adjustment) Option W

• Fan speed switch includes HIGH-LOW-AUTO-OFF.


X13511047010 (internal adjustment) Option X (used on electric heat coils)

• Fan speed switch includes AUTO-OFF.


X13790466010 (2-Speed)Digital display sensor

• Fan speed control.


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GeneralDeliver and install a complete unit ventilator certified for ventilation at ARI-840, or tested by an independent testing and balancing lab witnessed by owner’s representative. All non-ARI manufacturers shall be within 10-per-cent of catalog airflow and capacities, or removal of these units from the job-site may be required at the expense of the manufacturer or contractor.

Equipment ConstructionExterior cabinetry is constructed of heavy-gauge metal for strength and durability. All exposed edges are rounded to safeguard against injury. All interior sheet metal is galvanized steel to restrain against deterioration.

The bottom plane of the unit shall con-sist of a two panel design. A hinged panel option is provided as part of the equipment options to help alleviate hazards from falling panels during maintenance or inspection purposes. The control compartment is accessible without removing the entire bottom panel. The unit discharge grilles are welded or screwed in-place to become an integral part of the unit structure. The rounded edge steel bars are placed at a 10° slope to provide proper airflow deflection.

Access for inspection and cleaning of the unit drain pan, coils, and fan sec-tion are provided. The unit shall be in-stalled for proper access. Procedures for proper maintenance of the unit are included in the installing, operation manual.

Cabinet insulation is 1/2-inch thick, dual density bonded glass fiber. The exposed side is a high density, erosion proof material suitable for use in air streams up to 4500-feet per minute (FPM). Insulation shall meet the Un-derwriters’ Laboratories Fire Hazard Classification.

Piping and control end pockets are a minimum of 12-inches wide to facili-tate coil piping and service access. If standard end pock is less than 12-inch-es wide, an extended cabinet are pro-vided.

Final finish is cleaned, phosphatized and painted with an electrostatic pow-der spray system, with a minimum thickness of 1.5 mil to avoid visible runs and resist abrasion.

Unit Fans and MotorThe unit fan board assembly shall ship from the factory wired to the commis-sion schedule for engineered cfm ex-pectancy. A motor speed switch is on the unit or wall for motor speed adjust-ment.

The fan board is a single, rigid con-struction, made from corrosion resis-tive material. It is a trouble-free slide design to provide cleaning and ser-viceability ease to maintenance per-sonnel.

The fans contain a double width/dou-ble inlet, forward curved centrifugal design to sustain appropriate air throw into the space. The wheels are galvanized metal to resist corrosion. The dynamically balanced fan and mo-tor are of direct drive style.

The fan and coil arrangement are of a blow-thru configuration to supply un-varying coil face velocity avoiding cold spots on the coil.

The motors are of permanent split ca-pacitor (PSC) design with thermal overload protection. They are bearing-free to bypass the need of oiling. Mo-tors are located out of the airstream and contain thermal overload protec-tion. A 24VAC transformer is wired to the motor to provide different rpm set-ting to ensure rated capacity with all coil combinations. The motor(s) are provided with a quick disconnect plug for ease of service or maintenance.

Drain Pan(s)The unit drain pan consist of a corro-sion resistant, environmentally friend-ly design to facilitate condensate removal quickly. It is insulated on the bottom to prevent sweating. The pan is removable for cleaning. The drain connection is easy for the field to re-verse to the opposite end.

Hydronic Coils (option)All hydronic coils are plate-fin type, mechanically bonded to tubes. The coils are hydrostatically tested to 350 psi and burst tested to 450 psi. The coils are rated in accordance with ARI-440 or 220. A threaded drain plug is provided at the header’s lowest point, and a manual air vent provided at it’s highest point.

The standard four-pipe heating coil is in the preheat location. Optional four-pipe heating coils have the heating coil in the reheat position for dehumidifi-cation control.

Refrigerant Coils (option)Direct expansion coils contain copper tubes mechanically expanded into evenly spaced aluminum fins. All coils are proof and leak tested before leav-ing the manufacturer. The proof test is performed at 1.5-times the maximum operating pressure, and leak tested at the maximum operating pressure. In addition, the tubes are completely evacuated of air to check for leaks in the vacuum.

The refrigerant coil distributor assem-blies Venturi or orifice style with round copper distributor tubes.

MechanicalSpecifications

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Distributors are sized consistentlywith capacity of coil. Suction headers are fabricated from round copper pipe.

A thermostatic expansion valve (TXV) are factory selected and installed for a wide-range of control to maintain opti-mum control of superheat.

Refrigerant access ports are factory supplied on high and low side for ease of refrigerant pressure or temperature testing.

Electric Coil (option)Units equipped for electric heat have a special resistance heating element de-sign inserted in an extended surface fin-tube bundle for maximum element life and safety. Units specifying elec-tric heat include (as standard) a high temperature cut out with a continuous sensing element. This device inter-rupts electrical power whenever ex-cessive temperatures are sensed anywhere along the leaving side of the coil. A contactor is included to ensure positive disconnect of electrical power whenever the fan motor power is in-terrupted. A dead front switch discon-nects power to the unit when the access panel is opened. All electric heat units have a power wiring con-sole in the right hand end-pocket to fa-cilitate field wiring of the unit.

Steam Coil (option)Units including a steam coil are of a a 5/8-inch, sigma-flow, tube-in-tube, dis-tributing coil design. Steam coil tubing is mechanically expanded into evenly spaced aluminum fins. The supply and return connections are on the same side, and include a 1-inch female pipe thread (FPT) termination. The coil is pitched by the manufacturer to pro-vide condensate drainage.

Condensing UnitThe manufacturer provides outdoor, air-cooled condensing units where specified. The condensing unit sizes are specifically matched to the unit ventilator to avoid over-cooling. The units are U.L./C.U.L listed. High/low pressure and temperature protection

are provided, along with easy single sided service capabilities.

Outside Air/Return Air DamperEach unit ventilator design results in a fixed air, compressible seal to ensure proper modulation and mixing of the return and outdoor air. The damper is capable of varying proportion of mixed air from 100 percent room air to 100 percent outside air.

Face and Bypass Damper (option)Face and bypass damper control is provided on the unit ventilator. This bypass damper design is utilized for economizing and dehumidification of the equipment during seasonal or morning warm-up. The damper is con-structed of aluminum grade. The damper is tightly sealed and designed to minimize heat pickup in the bypass position.

A coil isolation valve is a selectable op-tion. It is a 2-position, 2-way valve with 24VAC, 60 HZ electrical, and a stroke time of 10 seconds ON/5 seconds OFF. Close off pressures include 30 psig - 1/2", 15 psig - 3/4", and 9 psig = 1".

ControlsEnd Device Controls (option)An end device control option utilizes factory selected control components to allow other control vendors to easi-ly interface with a classroom air condi-tioning unit. The factory supplied components are installed in the unit ventilator and wired to a terminal strip before shipment. The following op-tions are selectable with end device controls:

• Valve control

• Piping packages

• Face and bypass control

• Return/Outside air actuator

• Low limit thermostat

• 24 volt transformer

• Fan start/stop relay

• 10 pole terminal block for field hook-up

Direct Digital Controls (option)Factory mounted direct digital con-trols contain a LonTalkTM communica-tion protocol. Both communication protocols are capable of combining HVAC and building management into one comfort system. The direct digital controls are factory tested, commis-sioned to ensure quality. The unit is ready for hook-up to a building auto-mation system at hardware set-up. The following options are selectable with DDC controls:

• Valve control

• Face and bypass control

• Economizer

• Active dehumidification

• Water temperature sensor

• Night setback

• Morning warm-up

• Low limit thermostat

• Mixed air and discharge sensing

• Fan status

• Timed override

• Integrated ComfortTM system capabilities

• Filter run timer

Wall Mounted Sensor (option)The wall mounted sensor provides fan speed switching to the unit ventilator to increase or decrease motor rpm. The temperature set-point thumb wheel is either internal or external to the sensor casing for protection and/or accessibility.


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Factory Mounted Piping (option)Factory mounted piping is available when selecting DDC or end device controls. Packages are available in 2-way or 3-way configurations with a 3-point floating valve piped to the return side of the coil. Packages are leak tested to 90 psig to ensure joint integrity.

FilterEach unit ventilator contains factory installed 1-inch throw-away or perma-nent filters. The throw-away filter design has an average resistance of 76-percent and dust holding capacity of 26-grams per square foot.

Unit CertificationThe unit ventilator is certified or rated in accordance to the following listings for performance proof and safety: ETL, ARI-840, ARI-350, LonMark.

WarrantyThe equipment is warranted by the manufacturer against defects in mate-rial and factory workmanship for one year. Optional extended warranties are available through the local distrib-utor.


Trane has a policy of continuous product and data improvement and reserves the right to change design and specifications without notice.

Literature Order Number UV-PRC004-EN

File Number PL-TD-000-UV-PRC004-EN-09/05

Supersedes PL-TD-000-UV-PRC001-EN-8/01 (HUVC portion)

Stocking Location Electronic OnlyTrane A Business of American Standard Companies www.trane.com

For more information, contact your local district office or e-mail us at [email protected]

Documents

Classroom Unit Ventilator · A 2 to 10 VDC or 3-point floating actuator is available when End Device controls are speci- ... All horizontal units have an appliance grade paint finish