Trane Huvc Horizontal Classroom Unit Ventilator Catalogue UV PRC004 EN (04 Feb 2013)

: Trane Trane-Huvc-Horizontal-Classroom-Unit-Ventilator-Catalogue-684293 trane-huvc-horizontal-classroom-unit-ventilator-catalogue-684293 trane pdf

Open the PDF directly: View PDF .
Page Count: 65

Horizontal Classroom Unit Ventilator

750 cfm to 2000 cfm

February 2013 UV-PRC004-EN

Product Catalog

UV-PRC004-EN.book Page 1 Monday, February 4, 2013 11:01 AM

© 2013 Trane All rights reserved UV-PRC004-EN

Introduction

Trane Horizontal Classroom Unit Ventilator

A Classroom Choice in HVAC

Classroom unit ventilators have been cost effective way to heat and cool schools for over half a

century. Many schools choose classroom unit ventilators because of their ability to heat, cool and

ventilate, as well as their durable 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 between classrooms.

The ceiling-hung, ducted, horizontal unit ventilator may provide benefits in sound sensitive

applications. The horizontal 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. Properly designed supply- and return-air ducts can help attenuate HVAC equipment and

air noise. Locating the units outside of the classroom can also improve access and serviceability

of the equipment.

Trane’s commitment to providing premium quality products has led to the exclusive use of

Electronically Commutated Motors (ECM) in all Unit Ventilator models. These brushless DC motors

incorporate the latest technology for optimized energy efficiency, acoustical abatement,

UV-PRC004-EN.book Page 2 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 3

Introduction

maintenance free and extended motor life. Each motor has a built-in microprocessor that allows

for programmability, soft ramp-up, better airflow control, and serial communication.

Additionally, this is the industry’s first solution that is factory-mounted, -wired, and -programmed

for infinite modulation of fan speed based on space loads, using the Tracer UC400.

Trane unit ventilators are ETL listed, and AHRI-840 certified insuring peek performance to meet

today’s classroom habitat.

Trademarks

Integrated Comfort, Rover, TOPSS, Tracer, Tracer Summit, Trane, and the Trane logo are

trademarks or registered trademarks of Trane in the United States and other countries. All

trademarks referenced in this document are the trademarks of their respective owners.

BACnet is a registered trademark of American Society of Heating, Refrigerating and Air-

Conditioning Engineers (ASHRAE); Echelon®, LONMARK, LonTalk, and LONWORKS are registered

trademarks of Echelon Corporation; UL and the UL logo are trademarks of UL LLC.

UV-PRC004-EN.book Page 3 Monday, February 4, 2013 11:01 AM

4 UV-PRC004-EN

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Trane Horizontal Classroom Unit Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

A Classroom Choice in HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Made for the Classroom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

The Applied Unit Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Selection Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Selecting a Unit Ventilator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

General Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Glycol in an HVAC System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Factory Installed Piping Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Why Trane Controls? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

ECM Engine Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Unit-Mounted Speed Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Customer Supplied Terminal Interface (CSTI) . . . . . . . . . . . . . . . . . . . . . 44

Tracer ZN520 Zone Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Tracer UC400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Zone Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

UV-PRC004-EN.book Page 4 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 5

Features and Benefits

Made for the Classroom

Equipment Size

The horizontal unit ventilator delivers from 750 cfm to 2000 cfm. Trane’s unit ventilator is sized to

fit any replacement or new construction application.

Cabinet Finish

The unit cabinetry is made of durable industrial grade metal for hard wearing applications. All steel

surfaces are cleaned, phosphatized, rinsed and dried before applying a final paint finished on metal

that may be exposed to the room decor.

Access

Access to the air filter is made through the bottom of the unit providing effortless access for filter

change-out. The access panel is available with a safety chain option for protection from dropping

the panel during normal maintenance situations.

Spacious End Pockets

The 13-1/2-inch wide by 30-inch high by 15-1/4-inch deep (standard) to provide uncomplicated field

installation of valves, piping, and controls. Several large knockouts are provided in both the left and

right end pockets for electrical and piping connections.

Control Connections

All electrical connections are made in the left-hand end pocket for equipment not specified with

electric heat. Units equipped with the electric heat option have in-coming power connections made

in the right-hand end pocket.

Fan Board

The fan board 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.

Figure 1. Cabinet access

UV-PRC004-EN.book Page 5 Monday, February 4, 2013 11:01 AM

6 UV-PRC004-EN

Features and Benefits

Energy Efficiency

Trane’s commitment to providing premium quality products has led to the exclusive use of

Electronically Commutated Motors (ECM) in all Unit Ventilators. These brushless DC motors

incorporate the latest technology for optimized energy efficiency, acoustical abatement,

maintenance free and extended motor life. Each motor has a built-in microprocessor that allows

for programmability, soft ramp-up, better airflow control, and serial communication.

• Trane units equipped with ECMs are significantly more efficient than the standard Permanent

Split Capacitor (PSC) motor.

• Lower operating costs on average of 50 percent (versus a PSC motor).

• The Reduced FLA feature allows units to ship with a nameplate FLA rating much lower than a

typical ECM unit.

Electronically Commutate Motor (ECM)

The fan motor is a variable speed electronically commutated motor with overload protection. The

motor is wired to either termination board so the unit can be control with either three fan speeds

or 0 Vdc to 10 Vdc. The motor speed is not affected by damper positions. Standard motors are rated

up to 0.25 ESP (external static pressure). High static motors are rated from 0.25 ESP to 0.45 ESP.

Bearings for the motor are permanently lubricated requiring little maintenance over the lifetime of

the equipment.

The motor is removable without complete disassembly of the fan board. Simply remove the two

motor quick-connects and loosen the shaft coupling.

Filter

Filters for the horizontal unit ventilator are of 1-inch, throwaway, MERV 8, or MERV 13. They are

shipped with the equipment for installation/start-up purposes. Extra filters may be ordered

separately for maintenance of the equipment.

Figure 2. Fan motor

UV-PRC004-EN.book Page 6 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 7

Features and Benefits

Drain Pan

The unit drain pan is positively sloped to assure proper drainage. The pan is insulated on the

bottom to help prevent condensate formation. The pan is simple to remove for cleaning purposes

by loosening two front screws.

Piping

Hydronic piping for the unit ventilator may be factory installed or field provided. It fits painlessly

inside the unit end pockets, permitting quick hook-up during the installing phase. The motorized

valves include a trouble-free, pop-top actuator allowing the maintenance or service technician

access to the motor without removing the valve body from the piping package.

Coils

Through the various coil combinations offered by Trane, room conditions can be met. Two-pipe

and four pipe combinations are available to support any application. Coil selections include

hydronic, steam, direct expansion (DX) and electric. For heating coils, Trane provides steam, hot

water and electric options. Cooling coils are available as cold water and DX. Access to the coil for

cleaning purposes is fundamentally one of the greatest features Trane provides as part of the

equipment. Maintaining a clean coil inherently increases the efficiency adds to the life of the

equipment, and helps to maintain proper indoor air quality.

Outside/Return-Air Damper Design

The outside/return air (OA/RA) damper is a dual blade system to ensure proper modulation and

mixing of the air to AHRI-840 economizing standards.

The optional outside air actuator is spring return. The spring return system 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 during electrical outages or system shut-down.

When ordered with factory mounted Trane® controls, the actuator is 3-point floating arrangement.

A 2–10 Vdc or 3-point floating actuator is available when Customer Supplied Terminal Interface

(CSTI) are specified.

Face and Bypass

The optional face and bypass design can provide active energy savings to the owner. This design

works best during seasonal changeover when outside air temperature are in their prime. It also

supports morning warm-up when lighter temperatures can easily be drawn into the system before

normal classroom operation begins.

The design allows the damper to bypass the cooing coil to supply cool, untreated 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.

UV-PRC004-EN.book Page 7 Monday, February 4, 2013 11:01 AM

8 UV-PRC004-EN

Features and Benefits

Controls

• This is the industry’s first solution that is factory-mounted, -wired, and -programmed for infinite

modulation of fan speed based on space loads, using the Tracer™ UC400.

• Auto Fan Speed control with the Tracer ZN520 ramps the fan speed up and down to meet space

loads.

• All controls are factory-mounted and tested to minimize field setup and improve reliability.

• Controls are wired with a 24-Vac transformer to keep only a single source power connection

requirement to the unit.

• All wall-mounted zone sensors require only low voltage control wiring from the device to the

unit control box. (No line voltage.)

• The controller automatically determines the unit’s correct operating mode (heat/cool) by

utilizing a proportional/integral (PI) control algorithm to maintain the space temperature at the

active setpoint, allowing total comfort control.

• Entering water temperature sampling eliminates the need for inefficient bleedlines to sense

automatic changeover on two-pipe changeover units.

• The random start-up feature helps reduce electrical demand peaks by randomly staggering

multiple units at start-up.

• Occupied/unoccupied operation allows the controller to utilize unoccupied temperature

setpoints for energy savings.

• Warm-up and cool-down energy features are standard with Trane controls.

• To customize unit control, Tracer TU or Rover™ software will allow field modification of Tracer

ZN520 default settings. Tracer UC400 uses Tracer TU.

• Maximize system efficiency with free cooling economizers and modulating valves on units with

Tracer ZN520 and Tracer UC400.

Trane offers a broad range in control packages to fit both retrofit and new applications. From the

field convertible end-device package to a complete building automation system, Trane controls

integrate the highest quality components within their unit ventilator to allow greater optimization

of the entire system.

Certification Standards

Comfort, 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 systems have accurate information to make

Figure 3. Face and bypass damper

UV-PRC004-EN.book Page 8 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 9

Features and Benefits

system decisions. That is why the industry has developed performance standards and certification

programs which ensure that the equipment information provided to the design community is

correct and comparable across different manufacturers. The following list of certifications

identifies Trane’s commitment in providing the highest quality equipment to their customers.

• AHRI-840

•UL

®

• Rated in accordance to AHRI 350 (sound)

•L

ONMARK®

UV-PRC004-EN.book Page 9 Monday, February 4, 2013 11:01 AM

10 UV-PRC004-EN

Application Considerations

Fully Recessed Unit

The 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 Unit

In 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 Unit

The 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.

UV-PRC004-EN.book Page 10 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 11

Application Considerations

Partially Exposed Unit

Another 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.

Partially Exposed Unit

A 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.

Digit 20 = H

Digit 20 = F

UV-PRC004-EN.book Page 11 Monday, February 4, 2013 11:01 AM

12 UV-PRC004-EN

Application Considerations

Condensate Piping

The 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 3 /4” outside diameter.

All field supplied condensate lines to the unit should contain 1/4” 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.

Ducted Applications

A well designed duct system is beneficial to obtaining satisfactory fan performance. Determining

resistance losses for the duct work system is also necessary for acceptable fan performance.

Assistance in the design of duct work can be found in the ASHRAE Handbook. The unit ventilator

is designed to operate against ESP thru 0.45”. The ESP is determined by adding the discharge air

static pressure to the greater of either the outdoor air static pressure or the return air static

pressure.

The Applied Unit Ventilator

A Choice in System Design

The beauty of the classroom unit ventilator stems beyond its ability to heat and cool. The Trane unit

ventilator design provides an opportunity to create a comfortable atmosphere for living, learning

and playing, while providing energy efficiency savings with market-leading technology. Some of

the featured benefits of a unit ventilator are:

• Individual room control.

• Fresh air ventilation and filtration.

• Individual dehumidification sequences 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, installation costs are minimal

compared to other HVAC systems.

UV-PRC004-EN.book Page 12 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 13

Application Considerations

Wide Variety of Heating/Cooling Coils

Trane’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 expansion 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 available for heat fixed conditions.

When there is seasonal heating and cooling, a two-pipe chilled water/hot water changeover system

may be applicable 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 direct expansion coil for cooling, with an auxiliary electric heat

coil, hot water coil, or steam coil for heating.

Four-pipe chilled water/hot water systems are also available. This system is typically applied when

both heating and cooling may be simultaneously called for in the school structure.

Building Automation

As part of the building automation system, the mechanical HVAC system may be optimized to lower

energy consumption. By running only the mechanical devices that are required to support the

building load at a given time of day or night, true energy consumption savings may be achieved.

Maintenance and serviceability faults through the unit sensing devices are easily defined and cured

with an automated system.

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

Condensate

Proper condensate trapping is required for the classroom unit ventilator’s with hydronic and direct

expansion coils. In a properly trapped system, when condensate forms during normal operation,

the water level in the trap rises until there is a constant 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.

System choice for the classroom unit ventilator

AND/OR

AND/OR

CHILLER FOR

COOLING

BOILER

FOR HEAT ADD

CONDENSER

FOR COOLING

CLASSROOM UNIT VENTILATOR

UV-PRC004-EN.book Page 13 Monday, February 4, 2013 11:01 AM

14 UV-PRC004-EN

Application Considerations

Performance

Application of this product should be within the catalogs airflow and unit performance. The Trane

Official Product Selection System (TOPSS™) will aid in the selection process for a set of given

conditions. If this program has not been made available, ask a local Trane sales account manager

to supply the desired selections or provide a copy of the program.

Ventilation for Acceptable IAQ

Supplying proper ventilation to a classroom is challenging. The various rooms that make up a

school are forever changing in their proper ventilation needs. Building occupants and their

activities generate pollutants that heighten the ventilation requirements. And because of this

intermittent occupancy, the ventilation frequency of a classroom is constantly on the move.

Ventilation systems dilute and remove indoor contaminants, while mechanical heating and cooling

systems control the indoor temperature and humidity. Supplying an adequate amount of fresh air

to an occupied classroom is necessary for good indoor air quality. IAQ should be considered a top

priority in the school environment because children are still developing physically and are more

likely to suffer the consequences of indoor pollutants. For this reason, air quality in schools is of

particular concern. Proper conditioning of the indoor air is more than a quality issue; it

encompasses 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

dehumidification as a single-zone system.

ASHRAE Control Cycles

There 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. Reasons for classroom overheating can include:

• 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 increasing amounts of ventilation air to offset

classroom overheating.

ASHRAE Cycle I. All standard unit ventilator cycles automatically close the outside air damper

whenever maximum heating capacity is required. As room temperature approaches the comfort

setpoint, the outside air damper opens fully, and the unit handles 100 percent outside air. Unit

capacity is then controlled by modulating the heating element capacity.

ASHRAE Cycle I is typically used in areas where a large quantity of outdoor air is required to offset

the air being exhausted to relieve the room of unpleasant odors and particles.

ASHRAE Cycle II. ASHRAE Cycle II is the most widely used ventilation control. Similar to Cycle

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 requirements and good engineering practices per AHRI-840. Unit

capacity is controlled by varying the heating element output. If room temperature rises above the

comfort setting, the heating element 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 provides the greatest energy savings.

This is further proof of why AHRI-840 certification is important in minimizing energy consumption

through economizer performance.

UV-PRC004-EN.book Page 14 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 15

Application Considerations

Freeze Protection

The most important advantage the Trane blow-thru design provides is additional protection against

coil freeze-up. In contrast, draw-thru configurations allow little mixing of the return and outside air

stream while locating the coil very close to the outside air inlet. This process creates “cold spots”

on the coil which could lead to coil freeze-up.

With a blow-thru design, face and bypass with isolation valve control is not necessary (as with other

manufacturers) to provide proper freeze protection to the unit ventilator. This adds cost and more

mechanical components that could break down. The placement of the coil above the fan allows

enough space for the coil to avoid “cold spots” that could cause freezing.

Figure 4. ASHRAE cycle graph

UV-PRC004-EN.book Page 15 Monday, February 4, 2013 11:01 AM

16 UV-PRC004-EN

Selection Procedures

Selecting a Unit Ventilator

Trane horizontal classroom unit ventilators provide air delivery and capacities necessary to meet

the requirements of modern school classrooms. They are available with the industry’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 basic steps.

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

• Determine the unit size.

• Select the coil.

Capacity Required

The first step in unit ventilator selection is to determine room heating and air conditioning loads.

The calculation of this load is essential if the equipment 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 systems. The usual requirement is between 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. Purposely oversizing units should be avoided, since it can cause comfort and control

issues.

Unit Size

Unit ventilator size is determined by three factors:

• Total air circulation.

• Ventilation cooling economizer capacity 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 require additional circulation to avoid

hot spots.

Ventilation cooling capacity is determined by the amount of outside air delivered with the outside

air damper fully open, and the temperature difference between the outside air and the classroom.

In air conditioning applications, 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 with outside 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 cooling requirement. Good practice dictates 375 to 425 cfm per ton of hydronic cooling

capacity. Normally, however, Trane classroom air conditioner coils have sufficient capacities.

UV-PRC004-EN.book Page 16 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 17

Selection Procedures

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°F

Ventilation cooling required at 58°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°F. Coil capacity will become confirmed when the coil is selected.

Coil Selection

Selecting the correct coil is done through Trane’s Official Product Selection System (TOPSS).

For your convenience, TOPSS has a mixed air calculator built into the program.

UV-PRC004-EN.book Page 17 Monday, February 4, 2013 11:01 AM

18 UV-PRC004-EN

Digit 1, 2, 3 — Unit

Configuration

HUV = Horizontal Unit Ventilator

Digit 4 — Development

Sequence

C = Third Generation

Digit 5, 6, 7 — Development

Sequence

075 = 750 CFM

100 = 1000 CFM

125 = 1250 CFM

150 = 1500 CFM

200 = 2000 CFM

Digit 8 — Unit Incoming Power

Supply

1 = 120V/60/1

2 = 208V/60/1

3 = 208V/60/3

4 = 240V/60/1

5 = 240V/60/3

6 = 277V/60/1

8 = 480V/60/3-Phase 4-Wire Power

Supply

Digit 9 — Motor

0 = Free Discharge ECM

4 = Free Discharge ECM, Low

Acoustics

7 = Free Discharge ECM, Low FLA

Option

N = Free Discharge, Low Acoustics,

Low FLA

A = High Static ECM

E = High Static ECM, Low Acoustics

H = High Static ECM, Low FLA Option

K = High Static ECM, Low Acoustics,

Low FLA

Digit 10, 11 — Design Sequence

** = Design Sequence

Digit 12, 13 — Coil Letter

Designation

(Single Coil Options)

AA = 2 R, 12 FPI CW/HW Changeover

AB = 2 R, 16 FPI CW/HW Changeover

AC = 3 R, 12 FPI CW/HW Changeover

AD = 4 R, 12 FPI CW/HW Changeover

AE = 4 R, 16 FPI CW/HW Changeover

H1 = 1 R, 12 FPI Heating Coil

H2 = 1 R, 14 FPI Heating Coil

H3 = 1 R, 16 FPI Heating Coil

H4 = 2 R, 12 FPI Heating Coil

H5 = 2 R, 14 FPI Heating Coil

H6 = 2 R, 16 FPI Heating Coil

K1 = 1 R Low Capacity Steam Coil

K2 = 1 R High Capacity Steam Coil

E4 = 4 Element Heating Only Coil

E6 = 6 Element Heating Only Coil

E8 = 8 Element Heating Only Coil

G0 = 2 R, 12 FPI DX Coil

(Coupled Coil Options)

DA = 1 R, 12 FPI HW Coil with 2 R,

12 FPI CW Coil

DC = 1 R, 12 FPI HW Coil with 2 R,

14 FPI CW Coil

DD = 1 R, 12 FPI HW Coil with 3 R,

12 FPI CW Coil

DE = 1 R, 14 FPI HW Coil with 3 R,

14 FPI CW Coil

DK = 1 R Steam with 3 R CW Coil

X3 = 3 Element Elec Coil with

3 R CW Coil (2 R on Sz 125)

X4 = 4 Element Elec Coil with

3 R CW Coil (2 R on Sz 125)

X6 = 6 Element Elec Coil with

3 R CW Coil (2 R on Sz 125)

GK = 1 R Steam Coil with 2 R DX Coil

GA = 1 R Heating coil with 2 R DX Coil

G3 = 3 Element Elec Heat Coil with

2 R DX Coil

G4 = 4 Element Elec Heat Coil with

2 R DX Coil

G6 = 6 Element Elec Heat Coil with

2 R DX Coil

R1 = 3 R, 12 FPI CW Coil with 1 R,

12 FPI HW Coil

R2 = 3 R, 14 FPI CW Coil with 1 R,

12 FPI HW Coil

Digit 14 — Coil Connections

A = Right Hand Supply

B = Left Hand Supply

C = Left Hand Cool/Right Hand Heat

D = Right Hand Cool/Left Hand Heat

Digit 15 — Control Types

0 = Unit-Mounted Speed Switch

Q = Tracer ZN520

R = Tracer ZN520 w/Low Temp

T = Tracer ZN520 w/Time Clock

U = Tracer ZN520 w/Low Temp &

Time Clock

X = Tracer ZN520 ICS w/Fan Status

Y = Tracer ZN520 ICS w/Low Temp &

Fan Status

8=CSTI

9 = CSTI w/Low Temp

L = Tracer UC400

M = Tracer UC400 w/Time Clock

Digit 16 — Heating/Change Over

Coil Control

0=None

1 = Face & Bypass Damper Actuator

2 = 2-Pipe Face & Bypass Damper

Control

3 = 4-Pipe Face & Bypass Damper

Control & Isolation Valve

4 = Single Stage Electric Heat Control

5 = Dual Stage Electric Heat

7 = Face & Bypass Damper w/2-Pipe

Control & Isolation Valve

9 = 2-Way 1/2-in. 3.3 CV; 3-Wire Mod

W = 2-Way 1/2-in. 1.9 CV; 3-Wire Mod

G = 2-Way 3/4-in. 4.7 CV; 3-Wire Mod

H = 2-Way 1-in. 6.6 CV; 3-Wire Mod

Z = 3-Way 1/2-in. 1.9 CV; 3-Wire Mod

Q = 3-Way 1/2-in. 3.8 CV; 3-Wire Mod

R = 3-Way 3/4-in. 6.6 CV; 3-Wire Mod

T = Steam: 3-Wire Mod 1/2-in. 1.9 CV

U = Steam: 3-Wire Mod 1/2-in. 4.7 CV

V = Steam: 3-Wire Mod 3/4-in. 8.6 CV

Digit 17 — Cooling Coil Control

0=None

1 = Single Stage DX Controls

A = Field-Supplied Analog Valves

W = 2-Way 1/2-in. 1.9 CV; 3-Wire Mod

G = 2-Way 3/4-in. 4.7 CV; 3-Wire Mod

H = 2-Way 1-in. 6.6 CV; 3-Wire Mod

Z = 3-Way 1/2-in. 1.5 CV; 3-Wire Mod

Q = 3-Way 1/2-in. 3.8 CV; 3-Wire Mod

R = 3-Way 3/4-in. 6.6 CV; 3-Wire Mod

Digit 18 — Damper

Configuration

0 = Field Installed Damper Actuator

1 = 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

Model Number Descriptions

UV-PRC004-EN.book Page 18 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 19

Model Number Descriptions

Digit 19 — Zone Sensor/Fan

Speed Switch

0 = No Sensor - Unit Mounted Fan

Speed Switch

J = Wall Mt Zone Sensor (OALMH;

Setpoint Dial; On/Cancel)

K = Wall Mt Zone Sensor (OALMH;

Setpoint Dial)

L = UNIT Mt Zone Sensor (OALMH;

Setpoint Dial)

M = Wall Mount Display Sensor

w/Setpoint Adjust

P = Wall Mt Sensor (Setpoint dial;

On/Cancel) w/Unit-Mt Speed

Switch

Q = Wall Mt Sensor (Setpoint Dial)

w/Unit Speed Switch

3 = Wireless Display Sensor (H-L-A-O)

4 = Wireless Sensor - Ext Adjust

Digit 20 — Inlet Arrangement

A = FA Duct Top/RA Duct Lower Back

B = FA Duct Top/RA Duct Bottom

C = FA Duct Top/RA Bar Grille Bottom

D = FA Duct Top/RA Open Bottom

E=100% FA Duct Top

F = FA Duct Upper Back/RA Duct

Lower Back

G = FA Duct Upper Back/RA Duct

Bottom

H = FA Duct Upper Back/RA Bar Grille

Bottom

J = FA Duct Upper Back/RA Open

Bottom (no grille)

K=100% FA Duct Upper Back

L = 100% RA Duct Lower Back

M = 100% RA Duct Bottom

N = 100% RA Bar Grille Bottom

P = 100% RA Open Bottom (no grille)

Digit 21 — Discharge

Arrangement

1 = Bar Grille Discharge

2 = Duct Collar Discharge 7-1/8 in.

from Top

3 = Duct Collar Discharge 3/4 in.

from Top

4 = Duct Collar Discharge 3-5/8 in.

from Top

5 = Front Double Deflection Grille

Discharge

6 = Front Double Deflection Opening

Only (no grille)

7 = Bottom w/Double Deflection

Grille

Digit 22 — Unit Access Panel

0 = Std. Horizontal Access Panel

1 = Safety Chain/Std. Access Panel

2 = Removable Access Panel

3 = Safety Chain/Removable

Access Panel

Digit 23 — Recessing Flange

0 = No Recessing Flange

1 = Standard Recessing Flange

Digit 24 — Piping Package

0 = No Factory Installed Piping

Package

A = Package 1; Standard Package

C = Package 2; Standard Package

w/Circuit Setter

D = Package 3; Standard Package

w/Strainer and Circuit Setter

Digit 25 — Filter

1 = Throwaway Filter

2 = MERV 8 Filter

3 = MERV 13 Filter

Digit 26 — Color Selection

1 = Deluxe Beige Cabinet

2 = Cameo White Cabinet

3 = Soft Dove Cabinet

4 = Stone Gray Cabinet

5 = Driftwood Gray Cabinet

Digit 27 — Motor Disconnect

0 = No Disconnect

A = Non-Fused Toggle

B=Circuit Breaker

Digit 28 — Control Accessories

0=None

A= C0

2 Sensor

B = Wall Mounted Relative Humidity

Sensor

UV-PRC004-EN.book Page 19 Monday, February 4, 2013 11:01 AM

20 UV-PRC004-EN

General Data

Discharge and Inlet Arrangements

UV-PRC004-EN.book Page 20 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 21

General Data

Table 1. Weights and measurements: horizontal unit ventilators

Unit Size 075 100 125 150 200

Unit Length (in.) 70-1/4 82-1/4 94-1/4 106-1/4 106-1/4

Unit Height (in.) 16-5/8 16-5/8 16-5/8 16-5/8 17-5/8

Unit Width (Front Discharge) (in.) 35-5/8 35-5/8 35-5/8 35-5/8 43-1/8

Unit Width (Bottom Discharge) (in.) 48-3/4 48-3/4 48-3/4 48-3/4 57-1/4

Shipping Weight (lb)(a) 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

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

Table 2. Standard motor data (typical for AA coil)

Unit Size Volts RPM (Nominal) CFM (Nominal) Amps (FLA) Watts HP

75 115/60/1 1050 750 13 135 1

100 115/60/1 1050 1000 13 180 1

125 115/60/1 1050 1250 13 191 1

150 115/60/1 1050 1500 13 221 1

200 115/60/1 875 2000 13 311 1

Table 3. Hi-ESP motor data (typical for AA coil)

Unit Size Volts RPM (Nominal) CFM (Nominal) Amps (FLA) Watts HP

75 115/60/1 1330 750 13 198 1

100 115/60/1 1330 1000 13 287 1

125 115/60/1 1330 1250 13 305 1

150 115/60/1 1330 1500 13 357 1

200 115/60/1 1200 2000 13 770 1

Table 4. Coil area

Unit Size Length (in) Width (in) Face Area (in2)

075 42 12 504

100 54 12 648

125 66 12 792

150 78 12 936

200 78 12 936

Table 5. Inlet grille free area

Unit Size

Horizontal Minimum Free Area

Outlet (in2)Inlet (in

2)

075 232 144

100 296 192

125 364 240

150 and 200 430 288

UV-PRC004-EN.book Page 21 Monday, February 4, 2013 11:01 AM

22 UV-PRC004-EN

General Data

Table 6. Coil volume (gallons)

Coil Type Unit Size Volume (gal)

AA, AB 075 0.72

100 0.85

125 0.99

150–200 1.57

AC 075 0.97

100 1.17

125 1.40

150–200 2.27

AD & AE 075 1.25

100 1.51

125 1.80

150–200 2.96

DA–DC 075 0.86

100 0.98

125 1.13

150–200 1.71

DD–DE 075 1.11

100 1.30

125 1.53

150–200 2.39

DK 075 0.97

100 1.17

125 1.39

150-200 2.25

H1–H3 075 0.24

100 0.30

125 0.35

150–200 0.68

H4–H6 075 0.72

100 0.85

125 0.99

150–200 1.57

R1–R2 075 1.21

100 1.47

125 1.73

150–200 2.94

X3–X6 075 0.97

100 1.17

125 0.99

150–200 2.26

UV-PRC004-EN.book Page 22 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 23

General Data

Table 7. Coil specifications

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-inch package.

Left-hand configuration shown.

Coil Type: AA, AB, AC, AD, AE, H1, H2, H3, H4, H5, H6, DA, DC, DD, DE, X3–X6, DK, R1, R2

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-inch package.

Right-hand configuration shown.

Coil Type: DA, DC, DD, DE, FA, R1, R2

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.

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.

Right-hand configuration shown.

Coil Type: K1, K2

Coils

UV-PRC004-EN.book Page 23 Monday, February 4, 2013 11:01 AM

24 UV-PRC004-EN

General Data

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.

Right-hand configuration shown.

Coil Type: DK, FK

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.

Coil Type: X3, X4, X6, E4, E6, E7, E9

Direct Expansion Coil—R-410A

• The R-410A direct expansion (DX) refrigerant coil includes a factory mounted adjustable thermal expansion valve (TXV) set to 90 psig superheat

and an equalizing tube.

•50 VA transformer

• Time delay relay

• Frost detection sensor

• Outside air sensor

Available in a left-hand configuration only.

Coil Type: G3–G6, G0, GA

Table 7. Coil specifications (continued)

Coils

UV-PRC004-EN.book Page 24 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 25

General Data

Table 8. Coil row-fin information

Style Coil Type Size Type

Cooling Heating

Rows fpi Rows fpi

2-PipeChangeover Cool or Heat AA 212212

AB 214214

AC 312312

AD 412412

AE 414414

2-Pipe Heating Only H1 NA NA 1 12

H2 NA NA 1 14

H3 NA NA 1 16

H4 NA NA 2 12

H5 NA NA 2 14

H6 NA NA 2 16

2-Pipe DX Cooling Only 075 G0 2 12 NA NA

100 G0 2 12 NA NA

125 G0 2 12 NA NA

150 G0 2 12 NA NA

200 G0 2 14 NA NA

2-Pipe Steam Heating Only—Standard Capacity K1 NA NA 1 8

2-Pipe Steam Heating Only—High Capacity 075 K2 NA NA 1 10

100 K2 NA NA 1 13

125 K2 NA NA 1 10

150 K2 NA NA 1 14

200 K2 NA NA 1 14

4-PipeCold Water Cool / Hot Water Heat DA 212112

DC 214114

DD 312112

DE 314114

4-Pipe Cold Water Cool / Hot Water Re-Heat R1 3 12 1 12

R2 314112

4-PipeCold Water Cool / Steam Heating 075DK 312111

100DK 312112

125DK 312111

150DK 312114

200DK 412114

4-Pipe Cold Water Cool / Electric Heating 075 X3–X6 3 12 Electric

100 X3–X6 3 12 Electric

125 X3–X6 2 14 Electric

150 X3–X6 3 12 Electric

200 X3–X6 3 14 Electric

4-Pipe DX Cool / Hot Water Heat 075 GA 2 12 1 12

200GA 214114

4-PipeDX Cool / Steam Heating 075GK 212111

100GK 212112

125GK 212111

150GK 212114

200GK 214114

4-Pipe DX Cool / Electric Heating 075 G3–G6 2 12 Electric

200 G3–G6 2 14 Electric

Coils

UV-PRC004-EN.book Page 25 Monday, February 4, 2013 11:01 AM

26 UV-PRC004-EN

General Data

Table 9. Control methodology

Fan Speed

FSS 3 or infinite(a)

(a)With a field-supplied 2–10 Vdc controller.

CSTI 3 or infinite(a)

Tracer ZN520 3

Tracer UC400 Infinite

Table 10. Control sequences

Fan Speeds

DX operation(a)

(a)Fan speed during sequence operation.

1

Electric heat operation(a) 1

Sidewall Exhaust(b)

(b)Unit Ventilator when operating with option.

2

ERSA(b) 2

Controls

UV-PRC004-EN.book Page 26 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 27

Performance Data

A-Coils

AHRI Cooling performance is based on 80/67°F entering air temperature, 45°F entering chilled

water temperature with a 10°F ΔT. Heating performance is based on 70°F entering air temp, 180°F

entering water temperature with a 40°F ΔT. All performance measured on high speed tap, 115 V.

Free discharge units: 0.0 ESP, with throwaway filter. High static units: 0.20 ESP, without filter.

Table 11. A-Coils, 2-pipe coil with free discharge EC motor

Size Coil Type

Airflow

(cfm)

Cooling Heating

Motor

Power

(W)

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

Total

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075

AA 875 19.12 15.62 3.81 1.49 52.00 2.60 0.70 135

AB 825 21.80 16.49 4.34 1.88 57.80 2.89 0.80 135

AC 815 27.63 19.28 5.51 4.09 63.90 3.19 1.40 135

AD 780 21.13 16.70 4.21 0.67 67.20 3.36 0.40 135

AE 760 19.64 15.28 3.91 0.59 71.70 3.58 0.50 135

100

AA 1090 25.18 9.02 5.02 2.89 67.00 3.35 1.20 180

AB 1030 28.47 20.09 5.67 3.60 74.40 3.72 1.50 180

AC 1025 33.88 22.89 6.75 7.02 81.90 4.09 2.50 180

AD 975 30.23 21.17 6.02 1.49 96.60 4.33 0.70 180

AE 1015 32.03 21.56 6.38 1.65 97.30 4.87 0.90 180

125

AA 1240 33.47 25.57 6.67 5.55 79.00 3.95 1.90 191

AB 1300 40.07 28.39 7.99 7.64 94.40 4.75 2.70 191

AC 1290 42.72 30.03 8.51 4.45 101.20 5.06 1.60 191

AD 1240 46.56 31.33 9.28 3.66 110.70 5.54 1.30 191

AE 1265 48.38 31.40 9.64 3.93 122.30 6.11 1.60 191

150

AA 1600 42.25 31.85 8.42 9.53 100.30 5.01 3.30 221

AB 1525 46.68 32.38 9.30 11.38 112.10 5.60 4.10 221

AC 1510 50.09 34.12 9.98 6.66 119.90 5.99 2.40 221

AD 1600 56.11 36.64 11.18 5.70 141.80 7.09 2.30 221

AE 1485 56.68 35.73 11.30 5.81 144.80 7.24 2.30 221

200

AA 2085 51.50 40.18 10.26 13.55 120.00 6.00 4.60 311

AB 1985 58.90 42.59 11.74 17.21 135.40 6.77 5.70 311

AC 1970 64.10 44.91 12.78 10.34 146.40 7.32 3.40 311

AD 1885 71.18 47.35 14.19 8.78 161.70 8.08 2.90 311

AE 1785 70.97 45.41 14.14 8.73 169.30 8.47 3.10 311

Table 12. A-coil, 2-pipe coil with high static EC motor

Size Coil Type

Airflow

(cfm)

Cooling Heating

Motor

Power

(W)

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

Total

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075

AA 780 17.24 14.07 3.44 1.24 48.00 2.40 0.60 198

AB 760 20.09 15.16 4.00 1.62 54.40 2.72 0.70 198

AC 755 25.81 17.92 5.14 3.62 60.20 3.01 1.20 198

AD 740 18.96 15.35 3.78 0.55 64.20 3.21 0.40 198

AE 795 22.56 16.92 4.50 0.76 74.50 3.73 0.50 198

100

AA 1115 28.38 21.70 5.66 3.57 68.00 3.40 1.30 287

AB 1090 32.67 23.42 6.51 4.59 77.50 3.88 1.60 287

AC 1085 38.77 26.52 7.73 8.91 85.50 4.28 2.70 287

AD 1055 37.26 25.97 7.43 2.17 92.40 4.62 0.80 287

AE 1005 36.82 24.68 7.34 2.13 96.40 4.82 0.90 287

125

AA 1255 34.55 26.50 6.88 5.87 79.60 3.98 2.00 305

AB 1225 39.67 28.07 7.91 7.51 90.40 4.52 2.50 305

AC 1220 42.27 29.69 8.42 4.37 96.90 4.85 1.40 305

AD 1350 51.35 34.70 10.23 4.38 118.70 5.93 1.50 305

AE 1295 51.45 33.47 10.25 4.39 124.80 6.24 1.60 305

150

AA 1490 37.40 27.72 7.45 7.68 95.40 4.77 3.10 357

AB 1450 42.55 29.09 8.48 9.65 108.00 5.40 3.80 357

AC 1445 45.63 30.84 9.09 5.65 115.80 5.79 2.20 357

AD 1715 55.74 36.38 11.11 5.63 150.00 7.50 2.50 357

AE 1635 55.39 34.88 11.04 5.57 157.20 7.86 2.70 357

200

AA 2095 50.67 39.43 10.10 13.16 120.40 6.02 4.60 770

AB 2005 57.94 41.78 11.55 16.71 136.40 6.82 5.80 770

AC 1990 62.87 43.94 12.53 9.99 147.40 7.37 3.40 770

AD 1895 69.14 45.88 13.78 8.32 162.40 8.12 2.90 770

AE 1770 68.74 43.88 13.70 8.24 168.10 8.40 3.10 770

UV-PRC004-EN.book Page 27 Monday, February 4, 2013 11:01 AM

28 UV-PRC004-EN

Performance Data

AHRI Cooling performance is based on 80/67° F entering air temperature, 45°F entering chilled

water temperature with a 10°F ΔT. Heating performance is based on 70°F entering air temp, 180°F

entering water temperature with a 40°F ΔT. All performance measured on high speed tap, 115 V.

Free discharge units: 0.0 ESP, with throwaway filter. High static units: 0.20 ESP, without filter.

Table 13. D-coil, 4-pipe with free discharge EC motor

Size Coil Type

Airflow

(cfm)

Cooling Heating

Motor

Power

(W)

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

Total

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075

DA 815 18.16 14.82 3.62 1.36 51.20 2.56 0.50 135

DC 780 19.20 14.93 3.83 1.50 56.70 2.83 0.70 135

DD 780 26.73 18.60 5.33 3.85 49.70 2.48 0.50 135

DE 760 26.81 18.21 5.34 3.87 55.60 2.78 0.60 135

100

DA 1025 24.21 18.20 4.83 2.70 66.30 3.32 1.00 180

DC 975 24.95 17.96 4.97 2.84 73.00 3.65 1.20 180

DD 975 32.41 21.82 6.46 6.49 64.00 3.20 0.90 180

DE 1015 34.38 22.76 6.85 7.21 73.90 3.69 1.20 180

125

DA 1290 34.12 26.13 6.80 5.74 84.00 4.20 1.70 191

DC 1240 36.25 26.17 7.22 6.40 93.10 4.66 2.00 191

DD 1240 41.81 29.35 8.33 4.46 81.60 4.08 1.60 191

DE 1265 46.51 31.39 9.27 5.62 94.50 4.73 2.10 191

150

DA 1510 40.06 29.98 7.98 8.67 99.60 4.98 2.50 221

DC 1600 43.37 30.73 8.64 9.98 118.60 5.93 3.40 221

DD 1600 50.24 34.23 10.01 6.96 103.70 5.19 2.70 221

DE 1485 54.23 35.59 10.81 8.28 112.30 5.61 3.10 221

200

DA 1970 49.82 38.66 9.93 12.77 119.80 5.99 3.50 311

DC 1885 52.99 38.79 10.59 14.25 133.60 6.68 4.30 311

DD 1885 62.56 43.67 12.47 10.31 116.20 5.81 3.30 311

DE 1785 67.01 44.90 13.35 12.13 128.50 6.43 4.00 311

Table 14. D-coils, 4-pipe with high static EC motor

Size Coil Type

Airflow

(cfm)

Cooling Heating

Motor

Power

(W)

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

Total

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075

DA 755 16.75 13.68 3.34 1.18 48.50 2.43 0.50 198

DC 740 17.99 13.99 3.59 1.34 54.40 2.72 0.60 198

DD 740 25.33 17.57 5.05 3.50 47.80 2.39 0.50 198

DE 795 28.38 19.35 5.66 4.28 57.50 2.87 0.70 198

100

DA 1085 27.68 21.10 5.52 3.42 69.00 3.45 1.10 287

DC 1055 29.55 21.60 5.89 3.84 77.40 3.87 1.30 287

DD 1055 38.03 25.97 7.58 8.61 67.70 3.39 1.00 287

DE 1005 38.15 25.45 7.60 8.66 73.30 3.66 1.20 287

125

DA 1220 33.80 25.85 6.74 5.65 80.70 4.03 1.50 305

DC 1350 39.46 28.79 7.86 7.43 99.20 4.96 2.30 305

DD 1350 45.76 32.35 9.12 5.24 86.70 4.34 1.80 305

DE 1295 49.25 33.38 9.81 6.23 96.20 4.81 2.10 305

150

DA 1445 36.80 27.22 7.33 7.46 96.50 4.83 2.30 357

DC 1715 43.12 30.52 8.59 9.88 124.80 6.24 3.80 357

DD 1715 49.93 34.00 9.95 6.88 108.90 5.45 2.90 357

DE 1635 53.07 34.77 10.58 7.97 120.60 6.03 3.50 357

200

DA 1990 48.96 37.88 9.76 12.38 120.60 6.03 3.50 770

DC 1895 51.69 37.68 10.30 13.63 134.10 6.71 4.30 770

DD 1895 60.89 42.37 12.14 9.82 116.70 5.83 3.30 770

DE 1770 65.04 43.44 12.96 11.49 127.70 6.38 3.90 770

D-Coils

UV-PRC004-EN.book Page 28 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 29

Performance Data

AHRI Cooling performance is based on 80/67° F entering air temperature, 45°F entering chilled

water temperature with a 10°F ΔT. Heating performance is based on 70°F entering air temp, 180°F

entering water temperature with a 40°F ΔT. All performance measured on high speed tap, 115 V.

Free discharge units: 0.0 ESP, with throwaway filter. High static units: 0.20 ESP, without filter.

Table 15. 2-Pipe coil, HW data

HUV Size Coil Type

Heating

Total

Capacity Flow Rate WPD

(MBh) (gpm) (ft H20)

075

H1 41.18 2.06 2.85

H2 45.12 2.26 3.36

H3 48.74 2.44 3.86

H4 53.49 2.67 0.70

H5 57.95 2.90 0.81

H6 61.84 3.09 0.91

100

H1 52.90 2.65 0.97

H2 57.98 2.90 1.15

H3 62.65 3.13 1.33

H4 71.90 3.59 1.41

H5 77.92 3.90 1.63

H6 83.19 4.16 1.84

125

H1 66.45 3.32 1.67

H2 72.85 3.64 1.98

H3 78.73 3.94 2.28

H4 90.36 4.52 2.45

H5 97.97 4.90 2.83

H6 104.61 5.23 3.19

150

H1 99.89 4.99 2.70

H2 124.35 6.22 4.03

H3 131.66 6.58 4.48

H4 108.87 5.44 3.88

H5 118.05 5.90 4.49

H6 126.08 6.30 5.05

200

H1 120.35 6.02 3.80

H2 152.05 7.60 5.84

H3 161.68 8.08 6.54

H4 132.52 6.63 5.52

H5 144.37 7.22 6.44

H6 154.87 7.74 7.32

Table 16. X-coils, 2-pipe with free discharge EC motor

Size Coil Type

Cooling

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075 X3 26.73 18.60 5.33 3.85

X4 26.73 18.60 5.33 3.85

X6 26.73 18.60 5.33 3.85

100 X3 32.41 21.82 6.46 6.49

X4 32.41 21.82 6.46 6.49

X6 32.41 21.82 6.46 6.49

125 X3 39.67 27.73 7.91 7.51

X4 39.67 27.73 7.91 7.51

X6 39.67 27.73 7.91 7.51

150 X3 50.24 34.23 10.01 6.96

X4 50.24 34.23 10.01 6.96

X6 50.24 34.23 10.01 6.96

200 X3 72.21 48.78 14.39 13.34

X4 72.21 48.78 14.39 13.34

X6 72.21 48.78 14.39 13.34

H-, X-Coils

UV-PRC004-EN.book Page 29 Monday, February 4, 2013 11:01 AM

30 UV-PRC004-EN

Performance Data

AHRI Cooling performance is based on 80/67 °F entering air temperature, 45°F entering chilled

water temperature with a 10°F ΔT. Heating performance is based on 70°F entering air temp, 180°F

entering water temperature with a 40°F ΔT. All performance measured on high speed tap, 115 V.

Free discharge units: 0.0 ESP, with throwaway filter. High static units: 0.20 ESP, without filter.

Table 17. R1-, R2-, GA-coils, 4-pipe with free discharge EC motor, heating data

Unit Size Coil Type

Heating

Total

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075 R1 30.38 1.52 1.66

R2 36.27 1.81 2.29

GA 53.61 2.68 0.59

100 R1 38.03 1.90 0.54

R2 45.30 2.27 0.74

GA 72.06 3.60 1.14

125 R1 48.31 2.42 0.94

R2 57.62 2.88 1.30

GA 90.57 4.53 1.91

150 R1 68.42 3.42 1.36

R2 81.16 4.06 1.85

GA 102.98 5.15 2.63

200 R1 81.33 4.07 1.86

R2 96.80 4.84 2.56

GA 136.30 6.81 4.45

Table 18. R1-, R2-, DK-coils, 4-pipe with free discharge EC motor, cooling data

Unit Size Coil Type

Cooling

Total

Capacity

(MBh)

Sensible

Capacity

(MBh)

Flow Rate

(gpm)

WPD

(ft H20)

075 R1 26.73 18.60 5.33 3.85

R2 26.81 18.21 5.34 3.87

DK 17.47 13.97 3.48 1.27

100 R1 32.41 21.82 6.46 6.49

R2 34.38 22.76 6.85 7.21

DK 23.03 16.94 4.59 2.47

125 R1 41.81 29.35 8.33 4.46

R2 46.51 31.39 9.27 5.40

DK 33.47 24.34 6.67 5.55

150 R1 50.24 34.23 10.01 6.96

R2 54.23 35.59 10.81 7.98

DK 40.17 28.34 8.01 8.71

200 R1 62.56 43.67 12.47 10.31

R2 67.07 44.90 13.35 11.67

DK 48.70 35.47 9.71 12.26

GA-, DK-, R1-, R2-Coils

UV-PRC004-EN.book Page 30 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 31

Performance Data

Table 19. R-410A cooling only(a)

HUV

Unit Size Condensing Unit EWB (°F) T-Btu/hr(b)

S-Btu/hr

EDB 72°F EDB 76°F EDB 80°F

075 4TTB3018 63 18865 12052 15467 18574

67 19919 7972 11532 15060

71 21029 3638 7170 10878

4TTB3024 63 23108 13307 16931 20805

67 24057 9023 12633 16291

71 25428 4477 7832 11784

100 4TTB3024 63 24820 15965 20784 24543

67 26117 10448 15251 19950

71 27544 4735 9536 14353

4TTB3030 63 28395 17201 21904 26087

67 29886 11643 16360 21069

71 31529 5709 10447 15301

125 4TTB3030 63 30441 19769 25504 30266

67 31903 12951 18875 24723

71 33583 5690 11569 17730

4TTB3036 63 35117 21393 27320 32571

67 36701 14277 20254 26132

71 38881 6927 13004 19506

150 4TTB3036 63 36851 23892 31008 36531

67 38641 15616 22735 29964

71 40353 6867 14159 21323

4TTB3042 63 41204 25231 32327 39155

67 42745 16873 23916 30966

71 44884 7964 15092 22325

200 4TTB3042 63 43734 30169 38934 43734

67 45733 19218 28689 38535

71 47505 7509 17362 26976

4TTB3048 63 47482 30769 39826 47125

67 49200 20140 29313 38635

71 51420 8828 17852 27549

(a) R-410A DX coils are rated at 95°F dry bulb/80°F wet bulb ambient outside air temperature, 25 feet of suction and liquid line, 400 cfm per Ton nominal.

(b)Total Capacity calculated from outdoor 95°F dry bulb/80°F wet bulb and 80°F indoor DB standard air conditions.

DX-Coils

UV-PRC004-EN.book Page 31 Monday, February 4, 2013 11:01 AM

32 UV-PRC004-EN

Performance Data

Table 20. Electric heat capacity

Unit Size Coil Type No of Elem. Elem. kW Total kW TMBH

075 G3, X3 3 1.95 5.85 19.98

E4, G4, X4 4 1.95 7.80 26.64

E6, G6, X6 6 1.95 11.70 39.96

E7 7 1.95 13.65 46.61

E9 9 1.95 17.55 59.93

100 G3, X3 3 2.60 7.80 26.64

E4, G4, X4 4 2.60 10.40 35.52

E6, G6, X6 6 2.60 15.60 53.27

E7 7 2.60 18.20 62.15

E9 9 2.60 23.40 79.91

125 G3, X3 3 3.25 9.75 33.30

E4, G4, X4 4 3.25 13.00 44.40

E6, G6, X6 6 3.25 19.50 66.60

E7 7 3.25 22.75 77.69

E9 9 3.25 29.25 99.89

150 G3, X3 3 3.80 11.40 38.91

E4, G4, X4 4 3.80 15.20 51.91

E6, G6, X6 6 3.80 22.80 77.86

E7 7 3.80 26.60 90.84

E9 9 3.80 34.20 116.79

200 G3, X3 3 3.80 11.40 38.93

E4, G4, X4 4 3.80 15.20 51.91

E6, G6, X6 6 3.80 22.80 77.86

E7 7 3.80 26.60 90.84

E9 9 3.80 34.20 116.79

Electric Heat

UV-PRC004-EN.book Page 32 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 33

Performance Data

Table 21. Steam coil capacity

Unit Size Coil Type EAT

TMBH

5 PSIG 10 PSIG 15 PSIG

075 K1 -20 85.89 89.98 93.48

0 78.94 83.04 86.54

20 72.00 76.10 79.59

40 65.06 69.16 72.65

60 58.12 62.21 65.71

70 54.65 58.74 62.24

K2 -20 101.18 106.01 110.12

0 93.00 97.83 101.94

20 84.82 89.65 93.77

40 76.64 81.47 85.59

60 68.46 73.29 77.41

70 64.38 69.20 73.32

100 K1 -20 112.93 118.31 122.91

0 103.80 109.19 113.78

20 94.67 100.06 104.65

40 85.54 90.93 95.52

60 76.41 81.80 86.40

70 71.85 77.24 81.83

K2 -20 158.08 165.61 172.05

0 145.30 152.84 159.27

20 132.52 140.06 146.49

40 119.74 127.28 133.71

60 106.96 114.50 120.93

70 100.57 108.11 114.55

125 K1 -20 139.94 146.61 152.31

0 128.63 135.30 140.99

20 117.31 123.99 129.68

40 106.00 112.68 118.37

60 94.69 101.36 107.06

70 89.03 95.71 101.40

K2 -20 164.93 172.79 179.50

0 151.60 159.46 166.17

20 138.26 146.13 152.84

40 131.78 132.80 139.51

60 111.60 119.47 126.18

70 104.93 112.80 119.51

150 K1 -20 166.93 174.89 181.68

0 153.44 161.40 168.19

20 139.94 147.90 154.70

40 126.45 134.41 141.20

60 112.96 120.92 127.71

70 106.21 114.17 120.96

K2 -20 243.70 256.14 263.74

0 224.72 236.38 246.33

20 204.96 216.62 226.57

40 185.20 196.86 206.80

60 165.43 177.09 187.04

70 155.55 167.21 177.16

200 K2 -20 286.51 306.05 317.93

0 266.20 282.43 294.32

20 244.09 258.82 270.71

40 221.28 235.21 274.09

60 197.66 211.59 223.48

70 185.86 199.79 211.67

Notes:

1. Condensate trap for the steam coil option is field installed.

2. Static pressure for the K1, K2 options 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.

K1-, K2-Steam Coils

UV-PRC004-EN.book Page 33 Monday, February 4, 2013 11:01 AM

34 UV-PRC004-EN

Performance Data

Figure 5. DK, GK Steam coils performance data

Size 075 Unit Size 100 Unit

Size 125 Unit Size 150 Unit

Size 200 Unit

Note: Steam pressure below 8 psi is not recommended.

DK-, GK-Steam Coils

UV-PRC004-EN.book Page 34 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 35

Performance Data

Table 22. Minimum Circuit Ampacity (MCA) for standard and high static motors (115 V)

Unit Size HP Amps

75 1 16.25

100 1 16.25

120 1 16.25

150 1 16.25

200 1 16.25

Table 23. Minimum Circuit Ampacity (MCA) for electric heat coils with standard motors

Unit Size No. of Elem Coil kW 208 V 1ph 240 V 1ph 277 V 1ph 208 V 3ph 240 V 3ph 480 V 3ph

75 3 5.85 43.84 38.53 32.59 29.01 25.67 14.99

100 7.8 55.56 48.69 41.39 35.78 31.55 17.93

120 9.75 67.28 58.84 50.19 42.56 37.42 20.86

150 11.4 77.2 67.44 57.63 48.29 42.38 23.35

200 11.4 77.2 67.44 57.63 48.29 42.38 23.35

75 4 7.8 55.56 48.69 41.39 35.78 31.55 17.93

100 10.4 71.19 62.23 53.12 44.81 39.37 21.84

120 13 86.81 75.77 64.85 53.85 47.20 25.76

150 15.2 100.03 87.23 74.78 61.49 53.82 29.07

200 15.2 100.03 87.23 74.78 61.49 53.82 29.07

75 6 11.7 NA 69.00 58.99 49.33 43.29 23.80

100 15.6 NA 89.31 76.58 62.88 55.03 29.67

120 19.5 NA 109.63 94.18 76.43 66.77 35.54

150 22.8 NA 126.81 109.08 87.89 76.70 40.51

200 22.8 NA 126.81 109.08 87.89 76.70 40.51

Table 24. Additional Minimum Circuit Ampacity (MCA)

Volts Amps

120 0.94

208 0.55

240 0.48

277 0.41

480 0.41

Table 25. Minimum Circuit Ampacity (MCA) for electric heat coils with high static motor

Unit Size No. of Elem Coil kW 208 V 1ph 240 V 1ph 277 V 1ph 208 V 3ph 240 V 3ph 480 V 3ph

75 3 5.85 43.84 38.53 32.59 29.01 25.67 14.99

100 7.8 55.56 48.69 41.39 35.78 31.55 17.93

120 9.75 67.28 58.84 50.19 42.56 37.42 20.86

150 11.4 77.2 67.44 57.63 48.29 42.38 23.35

200 11.4 77.2 67.44 57.63 48.29 42.38 23.35

75 4 7.8 55.56 48.69 41.39 35.78 31.55 17.93

100 10.4 71.19 62.23 53.12 44.81 39.37 21.84

120 13 86.81 75.77 64.85 53.85 47.20 25.76

150 15.2 100.03 87.23 74.78 61.49 53.82 29.07

200 15.2 100.03 87.23 74.78 61.49 53.82 29.07

75 6 11.7 NA 69.00 58.99 49.33 43.29 23.80

100 15.6 NA 89.31 76.58 62.88 55.03 29.67

120 19.5 NA 109.63 94.18 76.43 66.77 35.54

150 22.8 NA 126.81 109.08 87.89 76.70 40.51

200 22.8 NA 126.81 109.08 87.89 76.70 40.51

Table 26. Minimum Circuit Ampacity (FLA) for EC motors

Motor Type HP Amps

Standard EC motors 1 13

High Static EC motors 1 13

Electrical

UV-PRC004-EN.book Page 35 Monday, February 4, 2013 11:01 AM

36 UV-PRC004-EN

Performance Data

Minimum Circuit Ampacity (MCA) and Maximum Fuse Size (MFS) Calculations

for Unit Ventilators with Electric Heat (Single Phase) Heater Amps =

(Heater kW x 1000)/Heater Voltage

Note: Use 120 V heater voltage for 115 V units. Use 240 V heater voltage for 230V units.

MCA = 1.25 x (heater amps + all motor FLAs)

MFS or HACR Type Circuit Breaker = (2.25 x Largest Motor FLA) + Second Motor FLA + Heater Amps

(If Applicable)

HACR (Heating, Air-Conditioning and Refrigeration) type circuit breakers are required in the branch

circuit wiring for all Unit Ventilators with electric heat.

Refer to Figure 26, p. 35 for motor FLAs.

Select a standard fuse size or HACR type circuit breaker equal to the MCA. Use the next larger

standard size if the MCA does not equal a standard size. Standard Fuse Sizes are: 15, 20, 25, 30, 35,

40, 45, 50, 60 amps (increase to 150 amps)

Unit Ventilator electric heat MBh = (Heater kW) (3.413)

Note: Incoming power to the unit ventilator is 3-phase, 4-wire for a 480 Volt system (3-hot, 1-neutral). This does not include

an equipment ground.

Electrical

UV-PRC004-EN.book Page 36 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 37

Performance Data

Glycol in an HVAC System

Because the detrimental effects of glycol are lower at high temperatures, little 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 percentages up to 40 percent in the heating loop of a system.

However, the same is not true for cooling systems. Concentrations of this level are intolerable in

cooling systems where fluid temperatures are lower. The viscosity of the glycol increases as the

temperature 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 viscous than water.

With these effects in mind it is important to use a minimum amount of glycol 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 mixture. The protection works as follows: 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 crystals

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 27 is provided by Dow Chemical

Co. for its ethylene and propylene glycol products.

Ta b l e 27 shows that a 30 percent ethylene glycol solution is enough to protect a system down to

-60°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.

Table 27. Percentage volume glycol concentration

Temperature (°F)

For Freeze Protection For Burst Protection

Ethylene 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%

Glycol Correction Factors

UV-PRC004-EN.book Page 37 Monday, February 4, 2013 11:01 AM

38 UV-PRC004-EN

Performance Data

Table 28 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 engineer. 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 28. Horizontal octave band sound power ratings (sound power in db ref: 10-12 watts)

Octave Band12345678

Center of Frequency 63 125 250 500 1000 2000 4000 8000

075 High Speed 66 67 61 60 56 53 48 41

075 Med Speed 62 63 57 56 52 49 44 37

075 Low Speed 59 60 54 53 49 46 41 34

100 High Speed 66 67 61 60 56 52 48 41

100 Med Speed 62 63 57 56 52 48 44 37

100 Low Speed 59 61 55 54 43 45 38 29

120 High Speed 70 71 65 64 60 56 51 44

120 Med Speed 66 67 61 60 56 52 47 40

120 Low Speed 63 64 58 57 53 49 44 37

150 High Speed 65 68 62 60 56 52 45 38

150 Med Speed 61 64 58 56 52 48 41 34

150 Low Speed 57 63 54 53 47 42 33 25

200 High Speed 73 75 68 64 60 57 53 45

200 Med Speed 67 69 62 58 54 51 47 39

200 Low Speed 64 74 59 60 49 45 37 29

Acoustical

UV-PRC004-EN.book Page 38 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 39

Piping

Factory Installed Piping Packages

Trane’s factory mounts piping packages for hydronic specified coils when Tracer™ ZN520, Tracer

UC400, or CSTI controls are designated.

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 300 psig to ensure

joint integrity.

Note: Insulation for the piping packages is field provided and field installed.

UV-PRC004-EN.book Page 39 Monday, February 4, 2013 11:01 AM

40 UV-PRC004-EN

Controls

Why Trane Controls?

Whether involved in a retrofit or in new construction applications, Trane has the control design to

fit the systems requirements. The broad range of control packages offer a range from a field

convertible end-device package, to a complete building automation system solution with LonTalk®

controls.

The good news is Trane® controls are factory-mounted, -wired, -tested and configured or

programmed with Trane® application expertise to provide comfort, efficiency, and reliability, as

well as, single-source warranty and service. With Trane’s integrated controls, the installed costs are

lower because the equipment has turn-key factory controls and every component of the system is

optimized to fit with the controller. Trane installs not only the controller, but also the hardware that

works intimately with the controller to allow the system to function properly (i.e., piping package,

valves, dampers, actuators, etc.). When a classroom unit ventilator with Trane® controls arrives to

the jobsite, it is completely ready for quick installation.

Table 29. Controller input/output summary

ZN520 UC400

Binary Outputs X

3-Speed Fan X X

2-Position Hydronic Valve X X

2-Position Fresh Air Damper X

1-Stage Electric Heat X X

3-Wire Economizer Damper X X

3-Wire Hydronic Valve X X

2-Stage Electric Heat X X

Reheat (hydronic or electric) X X

Generic X (a)

(a)The generic input and output are for use with a Tracer Summit system only.

Binary Inputs

Condensate Overflow Detection X X

Low Temperature Detection X X

Occupancy X X

Generic Input X (a)

Analog Inputs

Zone Temperature X X

Setpoint X X

Fan Mode: Auto, High, Medium, Low X X

Entering Water X X

Discharge Air X X

Outside Air X X

Generic X (a)

Analog Outputs

Variable speed fan X

Field supplied analog valves X

Table 30. Controller function summary

ZN520 UC400

Control Functions

Entering Water Temp. Sampling (Purge) X X

Auto Changeover X X

Fan Cycling

Warm-Up X

Pre-Cool X

Data Sharing (Master/Slave) X

Random Start X X

Dehumidification X X

Single Zone VAV X

Staged Capacity (2-Stage Electric Supplementary) X X

Other Functions

Manual Test X in TU

Maintenance Timer X X

Setpoint Limits X X

UV-PRC004-EN.book Page 40 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 41

Controls

ECM Engine Controller

The Electronically Commutated Motor (ECM) engine controls and reports the performance of up

to two Trane Brushless DC (BLDC) motors.

• The engine also coordinates the operation of the fan in response to electric heat behavior and

electric behavior in response to hydronic heat behavior.

• The engine incorporates a user interface that allows adjustment of certain unit parameters and

provides constant feedback on motor operation.

• The engine integrates service and troubleshooting tools.

• The engine integrates a versatile configurable auxiliary temperature sensor.

• The engine incorporates various safety and lockout features, such as maintaining proper fan

speeds if electric heat is called for.

Status Display

The ECM engine board contains a four-digit, seven-segment display that is used to present

information in a format close to real-world language, while having a small-form factor. Most

characters are immediately recognizable; however, please consult Table 31 and Table 32 for the

graphical representation of each alphanumeric character.

Figure 6. ECM engine controller

Figure 7. Status display

Table 31. Screen representation of alphabetical characters

ABCDEFGHI JKLMNOPQRSTUVWXYZ



Table 32. Screen representation of numeric characters

1234567890



ECM Engine Controller

UV-PRC004-EN.book Page 41 Monday, February 4, 2013 11:01 AM

42 UV-PRC004-EN

Controls

Unit-Mounted Speed Switch

Figure 8. Fan speed switch

Figure 9. Adapter board

Note: Customer Low-Voltage Interface for

Fan Speeds, Variable Fan Speed, and

24 Vac Supply

Unit-Mounted Speed Switch

UV-PRC004-EN.book Page 42 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 43

Controls

The adapter allows direct customer interfacing through the use of terminal strips. Standard

interfacing includes:

• Fan Speeds (H, M, L) (for wall mounted fan speed switches)

• Variable speed (0–10V) inputs

The standard adapter board eliminates many separate wiring harnesses in the panel and allows

simple, mistake-proofed single-plug interfacing of:

• The ECM engine controller

•Transformers

•Motors

• Valves

•Dampers

• Electric heat control

• Fan speed switches

• Main power (except electric heat)

The manual fan mode switch is available for unit ventilators that do not have Trane factory-

mounted control packages. This four-position switch (off, high, medium, low) allows manual fan

mode selection and is available unit or wall mounted. The unit-mounted option operates on line

voltage. The wall-mounted option is low-voltage and has three 24-volt relays using a factory-wired

transformer and relays to control the fan motor.

Unit-Mounted Speed Switch

UV-PRC004-EN.book Page 43 Monday, February 4, 2013 11:01 AM

44 UV-PRC004-EN

Controls

Customer Supplied Terminal Interface (CSTI)

The control interface is intended to be used with a field-supplied, low-voltage thermostat or

controller. The control box contains a relay board which includes a line voltage to 24-volt

transformer, quiet contactors (for electric heat units), and an optional disconnect switch. All end

devices are wired to a low-voltage terminal block and are run-tested, so the only a power

connection and thermostat connection is needed to commission the unit. Changeover sensors and

controls are provided whenever a change-over coil is selected. When N.O. valves are selected,

inverting relays are provided for use with standard thermostats.

The CSTI adapter board provides all the hookups of the standard adapter board, but in addition,

provides hookups for valve control (main and auxiliary coils), electric heat control, and damper

control. Screw terminal blocks provide convenient access to fan controls and to end device control.

In addition, a courtesy 10-Vdc supply is provided for use with an external potentiometer or rheostat.

The 10-Vdc supply supports up to 10 mA draw.

Figure 10. CSTI adapter board

Figure 11. CSTI adapter board field connections

1. VSP 10V

2. VSP 0–10V

3. VSP DC COM

1. 24 Vac Y (hot)

2. 24 Vac Y (gnd)

3. High

4. Medium

5. Low

6. V1Op/Cooling

7. V1C1 (not std)

8. Not used

9. Not used

10. V2Op/EH1St/Heating

11. V2C1/EH2St (not std)

12. Damper Open

13. Dmp Cl (not std)

Customer Low-Voltage Interface for

Valves, Electric Heat, Dampers, Fan

Speeds, Variable Fan Speed, and

24 Vac Supply

Valve(s), Electric Heat, and Changeover

Configuration Switches (Factory-Set)

321 1098 7654321

11

12

13

CSTI

UV-PRC004-EN.book Page 44 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 45

Controls

Tracer ZN520 Zone Controller

Features Include

• Automatic fan-speed reset

• Automatic ventilation reset

• Active dehumidification

• Manual output test

• Filter maintenance

• Master slave

• Water valve override

• Freeze avoidance

• Interoperability

• Three generic I/O ports

The Tracer ZN520 is a factory-installed, -tested and -commissioned LonTalk® control designed to

provide control of the classroom unit ventilator and the fan-coil products (see Figure 12).

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

• As part of the Trane Tracer Summit™ building automation system, the Tracer ZN520 becomes

an important part of the Trane Integrated Comfort™ system (ICS).

• The Tracer ZN520 can function as a completely standalone controller in situations where a

building automation system (BAS) is not present.

• For situations when a non-Trane BAS is present, the Tracer ZN520 can be used as an

interoperable unit controller.

Through building management of the HVAC system, optimizing energy consumption becomes

possible at a classroom level. Each unit is capable of functioning independently of one another

during occupied and unoccupied hours of the day. This allows the temperature setpoint and

ventilation setting to be changed automatically based on classroom usage (see Figure 13, p. 46).

Figure 12. Tracer ZN520 control board

Tracer ZN520

UV-PRC004-EN.book Page 45 Monday, February 4, 2013 11:01 AM

46 UV-PRC004-EN

Controls

Two Systems in One

In an ICS environment, the Tracer ZN520 is pre-designed to install quickly and easily into the

system. Since the controller and the unit are factory tested and commissioned, the start-up time

for the entire system is minimized. Trane becomes the single source of responsibility for the

equipment, unit controls, and building automation system.

As a standalone controller, the Tracer ZN520 is ideally suited for fix-on-fail replacement of units

with old pneumatic controllers, 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 Tracer ZN520 is certified to the interoperable LONMARK® Space Comfort Controller profile. This

allows the controller to be used with another vendor’s BAS and thereby still provide the high quality

of factory installation and testing. In addition, the Tracer ZN520 provides one of the most extensive

interoperable data lists of any controller of its type in the industry.

Tracer ZN520 Features Include:

Automatic Fan and Ventilation Reset. With the Tracer ZN520 controller, a two speed fan

control for the unit ventilator delivers the airflow output 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 outside 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 strategy, the controller will reposition the outside air

damper to confirm the minimum outside air cfm is met at both operating conditions.

Manual Output Test . The Tracer ZN520 controller includes a manual output test function. This

function may be initiated from the blue test push button on the controller or through the Rover

service tool. 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 operation. The manual output

test function may also be used in the following situations:

• Reset latching diagnostics

• Verify output wiring and operation

Figure 13. Tracer ZN520 system

Tracer ZN520

UV-PRC004-EN.book Page 46 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 47

Controls

• Force the water valve(s) open to balance the hydronic system during installation set-up or

service.

Filter Maintenance. Filter 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 adjustable fan run hour

(stored in the controller) to determine when maintenance is recommended for the unit. The run-

hours value may be user edited 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 generates a maintenance required diagnostic (unit will not shut-down). The user will

be notified of this diagnostic through the building automation system or when a Trane Service Tool

is communicating with the controller.

Active Dehumidification. On unit ventilators with reheat coils, the Tracer ZN520 can provide

active dehumidification to the classroom. This means that the classroom relative humidity 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 microbial growth and

the life span of airborne illness causing germs.

Master Slave (Data Sharing). Because the Tracer ZN520 controller utilizes LONWORKS®

technology, the controller 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 applies to applications where multiple units might

share one zone sensor for both stand-alone (with communication wiring between units) and a

building automation system (see Figure 14).

Water Valve Override. The Tracer 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 properly balanced system is

essential for proper and efficient operation.

Hydronic Coil Freeze Protection (Freeze Avoidance). Unit ventilator systems in cold

climates need to take precautions to avoid hydronic coil freeze-up. The Tracer ZN520 does this from

three different aspects. Any of these methods of protections will result in the unit fan being

disabled, the outside air damper being shut, and the hydronic valves being opened 100 percent.

The three methods of freeze avoidance include:

1. A binary freeze protection thermostat is mounted on the coil and will cause a latching diagnostic

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 below 40°F the outside air damper is closed, the fan is turned off and

the valves are fully opened.

Figure 14. Master slave system layout

Tracer ZN520

UV-PRC004-EN.book Page 47 Monday, February 4, 2013 11:01 AM

48 UV-PRC004-EN

Controls

3. When in the unoccupied mode the Tracer ZN520 has an adjustable freeze avoidance setpoint.

If the outside air temperature is below the setpoint the unit will open the valves to allow water

to flow through the coils.

Interoperability. Interoperability allows the owner freedom to select multiple vendors, and

multiple products. With this advantage, 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/Output. The three generic binary inputs/outputs are not part of the

normal control, but are actually controlled through he Tracer Summit system (when present) to

issue commands to the Tracer ZN520 control to turn the generic inputs/outputs of add-on

equipment (such as baseboard heating, exhaust fans, occupancy sensor, lighting, etc.) on and off.

This binary port is not affected when other binary diagnostics interrupt unit operation.

Tracer ZN520

UV-PRC004-EN.book Page 48 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 49

Controls

Tracer UC400

The Tracer UC400 controller delivers single zone VAV control and can be used in a stand-alone

application or as part of a Trane Integrated Comfort System (ICS).

In the stand-alone configuration, Tracer UC400 receives operation commands from the zone sensor

and/or the auto changeover sensor (on auto changeover units). The entering water temperature is

read from the auto changeover sensor and determines if the unit is capable of cooling or heating.

The zone sensor module is capable of transmitting the following information to the controller:

• Timed override on/cancel request

• Zone setpoint

• Current zone temperature

• Fan mode selection (off-auto-high-med-low)

For optimal system performance, unit ventilators can operate as part of an Integrated Comfort

System (ICS) building automation system controlled by Tracer Summit. The controller is linked

directly to the Summit control panel via a twisted pair communication wire, requiring no additional

interface device (i.e., a command unit). The Trane ICS system can monitor or override Tracer UC400

control points. This includes such points as temperature and output positions.

Tracer UC400 Zone Controller Features Include

• Single Zone VAV

• Automatic ventilation reset

• Active dehumidification

• Filter maintenance

• Water valve override

• Freeze avoidance

• Interoperability

• Unused I/O can be as generic I/O

The Tracer UC400 is a factory-installed, -tested, and -commissioned BACnet® MS/TP control

designed to provide control of the classroom unit ventilator (see Figure 15). The Tracer UC400

controller is designed to be used in the following applications: as stand-alone operation, part of the

Trane Tracer SC building automation system, or part of another BACnet MS/TP Building

Automation System. The Tracer UC400 can function as a completely standalone controller in

situations where a building automation system (BAS) is not present.

The Tracer UC400 is designed to install quickly and easily into the system. Since the controller and

the unit are factory-tested and -commissioned, the start-up time for the entire system is minimized.

Trane becomes the single source of responsibility for the equipment, unit controls, and building

automation system. As a standalone controller, the Tracer UC400 is ideally suited for fix-on-fail

replacement of units with old pneumatic controllers, or in situations where a BAS will be added at

Figure 15.

Tracer UC400

UV-PRC004-EN.book Page 49 Monday, February 4, 2013 11:01 AM

50 UV-PRC004-EN

Controls

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 Tracer UC400 is BTL listed as B-ASC profile. This ensures the controller to be

used with other BACnet® building automation systems.

Tracer UC400 Features Include

Single Zone VAV with Fully Modulating Fan Speed. The Tracer UC400 will minimize fan

speed, and in turn energy usage, by only delivering the air flow needed.

Ventilation Reset. With the Tracer UC400 the unit ventilator delivers the airflow the space needs.

When the air flow adjusts the outside air damper will also 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 strategy, the controller will reposition the outside air damper to confirm

the minimum outside airflow is met at both operating conditions.

Filter Maintenance. Filter 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 adjustable fan run hour

(stored in the controller) to determine when maintenance is recommended for the unit. The run-

hours value may be user edited as required. 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

generates a maintenance required diagnostic (unit will not shut-down). The user will be notified

of this diagnostic through the building automation system or when a Trane® service tool is

communicating with the controller.

Active Dehumidification. On unit ventilators with reheat coils, the controller can provide active

dehumidification to the classroom. This means that the classroom relative humidity can be kept

below an adjustable setpoint independent outdoor weather conditions. Indoor humidity levels are

recommended by ASHRAE to be kept below 60 percent in order to minimize microbial growth and

the life span of airborne illness causing germs.

Hydronic Coil Freeze Protection (Freeze Avoidance). Unit ventilator systems in cold

climates need to take precautions to avoid hydronic coil freeze-up. The controller does this from

three different aspects. Any of these methods of protections will result in the unit fan being

disabled, the outside air damper being shut, and the hydronic valves being opened 100 percent.

The three methods of freeze avoidance include:

1. A binary freeze protection thermostat is mounted on the coil and will cause a latching diagnostic

if the coil temperature falls below 35°F.

Figure 16. Cool mode nominal hydronic cooling control

t

(°F)

80

Fa

n

Max. Flow = 100% 100

s

etpoin

t

70

80

60

n

speed

0

100

%

Cooling

e

temp

s

60

40

comma

n

0



100

%

Cooling

20

ischarg

e

50

n

d (%)

Min. discharge

setpoint = 50°F

Min. Flow = 0% 0

D

45 Csp

Siblld

No cooling load Design cooling

load (demand)

S

pace sens

ibl

e

l

oa

d

load

(demand)

Tracer UC400

UV-PRC004-EN.book Page 50 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 51

Controls

2. An analog discharge air sensor monitors the temperature of the air coming off of the coil and

if the temperature falls below 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 controller has an adjustable freeze avoidance setpoint. If the

outside air temperature is below the setpoint, the unit will open the valves to allow water to flow

through the coils.

Zone Sensors

Zone sensors are available as either unit, wall, or split-mounted options for design flexibility. Unit

ventilators with the unit-mounted zone sensor option include a thermistor in the unit’s return air

path. Wall-mounted zone sensor options have an internal thermistor. Zone sensors operate on

24 Vac.

Figure 17. Wireless temp sensor with display

(SP, OALH, COMM)

Digit 19 = 3

Figure 18. Wireless temp sensor

(SP, OALMH, COMM)

Digit 19 = 4

Figure 19. Wall mtd temp sensor

(SP, OCC/UNOCC, OA, LMH, COMM)

Digit 19 = J

Figure 20. Unit mtd temp sensor

(SP, OALH, COMM)

Digit 19 = L

X13790822-04 (wall)

X13790855-01 (unit)

X13790492-01 (wall)

X13790855-01 (unit)

X13790842-01 (wall)

X13651467-02 (comm)

X13790843-01 (unit)

Zone Sensors

UV-PRC004-EN.book Page 51 Monday, February 4, 2013 11:01 AM

52 UV-PRC004-EN

Controls

Figure 21. Split mtd zone sensor, unit mtd fan speed

switch, and wall mtd setpoint dial

with On/Cancel

Digit 19 = P

Figure 22. Split mtd zone sensor,

unit mtd fan speed switch, and

wall mtd setpoint dial

Digit 19 = Q

Figure 23. Wall mtd temp sensor

(SP, OALMH, COMM)

Digit 19 = K

Figure 24. Wall mtd display temp sensor

(SP, OCC/UNOCC, OALMH, COMM)

Digit 19 = M

X13511527-01 (wall)

X13790849-01 (unit)

X13651467-02 (comm)

X13511529-01 (wall)

X13790849-01 (unit)

X13651467-02 (comm)

X13790841-01 (wall)

X13651467-02 (comm)

X13790886-04 (wall)

X13651467-02 (comm)

Zone Sensors

UV-PRC004-EN.book Page 52 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 53

Controls

Table 33. 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°

Adjustable with mechanical stop

Torque 35 inch/lb

Direction of Rotation Reversible with switch L/R

Position Indication Clip-on indicator

Manual Override External push button

Noise Level Less than 35 dB

Control Signal 3-point floating

Table 34. Outside air actuator specification

Power Supply 24 Vac ± 20% 50/60 HZ

24 Vac ± 10%

Power Consumption Running: 2.5 W

Holding: 1 W

Tranformer Sizing 5 VA (class 2-power source)

Overload Protection Electronic throughout 0° to 95° rotation

Control Signal 2 to 10 Vdc

3-point floating with Trane controls

Angle of Rotation Maximum 95°

Adjustable with mechanical stop

Torque 35 inch/lb

Direction of Rotation Spring return reversible with CW/CCW mounting

Position Indication Visual indicator, 0° to 95°

Noise Level Running: 30 dB

Actuators

UV-PRC004-EN.book Page 53 Monday, February 4, 2013 11:01 AM

54 UV-PRC004-EN

Dimensional Data

Ducted Front Discharge

Horizontal Unit Sizes 075–150

Size A B C D

075 70-1/4” 36” 46” 43-1/4”

100 82-1/4” 48” 58” 55-1/4”

125 94-1/4” 60” 70” 67-1/4”

150 106-1/4” 72” 82” 79-1/4”

UV-PRC004-EN.book Page 54 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 55

Dimensional Data

Horizontal Unit Size 200

Ducted Front Discharge

UV-PRC004-EN.book Page 55 Monday, February 4, 2013 11:01 AM

56 UV-PRC004-EN

Dimensional Data

Horizontal Unit Sizes 075–150

Bottom Double Deflection Discharge

Size A B C D

075 70-1/4” 36” 46” 43-1/4”

100 82-1/4” 48” 58” 55-1/4”

125 94-1/4” 60” 70” 67-1/4”

150 106-1/4” 72” 82” 79-1/4”

Double Deflection Discharge

UV-PRC004-EN.book Page 56 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 57

Dimensional Data

Horizontal Unit Size 200

Bottom Double Deflection Discharge

Double Deflection Discharge

UV-PRC004-EN.book Page 57 Monday, February 4, 2013 11:01 AM

58 UV-PRC004-EN

Dimensional Data

Inlet/Discharge Arrangements

UV-PRC004-EN.book Page 58 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 59

Dimensional Data

Inlet/Discharge Arrangements

UV-PRC004-EN.book Page 59 Monday, February 4, 2013 11:01 AM

60 UV-PRC004-EN

Dimensional Data

Drain Pan Connection

UV-PRC004-EN.book Page 60 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 61

Mechanical Specifications

General

Deliver and install a complete unit ventilator certified for ventilation at AHRI-840, or tested by an

independent testing and balancing lab witnessed by owner’s representative. All non-AHRI

manufacturers shall be within 10 percent of catalog airflow and capacities, or removal of these

units from the jobsite may be required at the expense of the manufacturer or contractor.

Safety

All standard units are UL-listed in the United States and Canada and comply with NFPA 90A

requirements.

The unit ventilator is certified or rated in accordance to the following listings for performance proof

and safety: UL, AHRI-840, AHRI-350, LONMARK®, BACnet®

Equipment Construction

Exterior 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 consist 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 section are provided. The

unit shall be installed 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 Underwriters’ Laboratories Fire Hazard Classification.

Piping and control end pockets are a minimum of 12 inches wide to facilitate coil piping and service

access. If standard end pock is less than 12 inches wide, an extended cabinet are provided.

Final finish is cleaned, phosphatized and painted with an electrostatic powder spray system, with

a minimum thickness of 1.5 mil to avoid visible runs and resist abrasion.

Unit Fans

The unit fan board assembly shall ship from the factory wired to the commission schedule for

engineered cfm expectancy. A motor speed switch is on the unit or wall for motor speed

adjustment.

The fan board is a single, rigid construction, made from corrosion resistive material. It is a trouble-

free slide design to provide cleaning and serviceability ease to maintenance personnel.

The fans contain a double width/double 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 motor are of direct drive style.

The fan and coil arrangement are of a blow-thru configuration to supply unvarying coil face velocity

avoiding cold spots on the coil.

Motors

All motors are brushless DC (BLDC)/electronically commutated motors (ECM) factory-

programmed and run-tested in assembled units. The motor controller is mounted in a touch-safe

control box with a built-in integrated user interface and LED tachometer. If adjustments are needed,

motor parameters can be adjusted through momentary contact switches accessible without

factory service personnel on the motor control board. Motors will soft-ramp between speeds to

UV-PRC004-EN.book Page 61 Monday, February 4, 2013 11:01 AM

62 UV-PRC004-EN

Mechanical Specifications

lessen the acoustics due to sudden speed changes. Motors can be operated at three speeds or with

a field-supplied variable speed controller. The motor will choose the highest speed if there are

simultaneous/conflicting speed requests. All motors have integral thermal overload protection

with a maximum ambient operating temperature of 104°F and are permanently lubricated. Motors

are capable of starting at 50 percent of rated voltage and operating at 90 percent of rated voltage

on all speed settings. Motors can operate up to 10 percent over voltage.

Drain Pan(s)

The unit drain pan consist of a corrosion resistant, environmentally friendly 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 reverse 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 AHRI-440 or 220.

A threaded drain plug is provided at the header’s lowest point, and a manual air vent provided at

its 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 dehumidification 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 leaving 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 assemblies Venturi or orifice style with round copper distributor

tubes.

Distributors are sized consistently with 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 optimum control of superheat.

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

or temperature testing. All coils are shipped with a dry-nitrogen charge.

Electric Coil (option)

Units equipped for electric heat have a special resistance heating element design inserted in an

extended surface fin-tube bundle for maximum element life and safety. Units specifying electric

heat include (as standard) a high temperature cut out with a continuous sensing element. This

device interrupts electrical power whenever excessive 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 interrupted. A dead front switch disconnects power to the unit

when the access panel is opened. All electric heat units have a power wiring console in the right

hand end-pocket to facilitate 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, distributing 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 provide condensate drainage.

UV-PRC004-EN.book Page 62 Monday, February 4, 2013 11:01 AM

UV-PRC004-EN 63

Mechanical Specifications

Outside Air/Return Air Damper

Each 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 constructed 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 option. It is a 2-position, 2-way valve with 24 Vac, 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”.

Controls

Controls options are: unit-mounted fan speed switch, customer supplied terminal interface (CSTI),

Tracer ZN520, and Tracer UC400. A variety of inputs and outputs are available for the CSTI and

Tracer controller options. A disconnect switch (for non-electric heat units), fused transformer,

contactor(s), and terminal strip are provided with the CSTI and Tracer controller options.

Customer Supplied Terminal Interface (CSTI)

The control interface is intended to be used with a field-supplied, low-voltage thermostat or

controller. The control box contains a relay board which includes a line voltage to 24-volt

transformer, and an optional disconnect switch. All end devices are wired to a low-voltage terminal

block and are run-tested, so the only a power connection and thermostat/controller connection is

needed to commission the unit. Changeover sensors and controls are provided whenever a

change-over coil is selected. When N.O. valves are selected, inverting relays are provided for use

with standard thermostats.

Unit-mounted Fan Speed Switch (FSS)

The fan speed switch is available with or without the control interface option. The unit-mounted

FSS will employ a low-voltage fan switch. The low-voltage fan speed option will provide an

interface to factory wiring, including variable speed/high-medium-low (HML) control. The control

box contains a line voltage to 24-volt transformer, EC motor controller, and an optional disconnect

switch.

Tracer ZN520

The Tracer ZN520 discrete speed controller can be used in a stand-alone application or used as part

of a Trane Integrated Comfort System (ICS) with LonTalk® communication. The Tracer ZN520 offers

the combined advantages of simple and dependable operation. Standard control features include

options normally available on more elaborate control systems. All control options are available

factory-mounted, -wired, and -configured and can also be field-configured using a service tool.

Tracer UC400

The Tracer UC400 controller delivers single zone VAV control in a stand-alone application or as part

of a Trane Integrated Comfort system with BACnet® communication. The Trace UC400 offers the

combined advantages of a factory-mounted, -wired, and -programmed controller for dependable

out-of-the box operation. Standard control features include options normally available on more

elaborate control systems. All control options are available factory-programmed with additional

configuration and programming in the field using a service tool.

Zone Sensors (option)

Trane offers a full line of wired and wireless temperature sensors. Wired temperature sensors are

the suitable alternative for locations that cannot accommodate wireless sensors or that require a

UV-PRC004-EN.book Page 63 Monday, February 4, 2013 11:01 AM

64 UV-PRC004-EN

Mechanical Specifications

service tool connection. Wireless temperature sensors, which provide easy and flexible

installation, are a cost-effective alternative to wired sensors.

Some additional options available with the sensors include:

• Easy-to-use display interface for clear and simple monitoring and control.

• Temperature setpoint control to allow the tenant to choose a temperature setpoint that satisfies

their personal preference.

• Fan speed switch to allow the tenant to locally control the fan speed to better satisfy their

preference.

• Occupancy override to allow the tenant to request temporary timed override system operation

that keeps the building conditions in occupied comfort conditions.

• COMM module that is compatible with all Trane® wired temperature sensors. This accessory

provides a local RJ22 connection to Trane® service tools for easy, low-cost maintenance.

Factory Mounted Piping (option)

Factory mounted piping is available when selecting Trane® controls or Customer Supplied

Terminal Interface (CSTI). 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.

Filter

Units equipped with a standard throwaway filter have an average resistance of 76 percent and dust

holding capacity of 26 grams per square foot.

Units equipped with 1-in. MERV 8 filters have a rating based on ASHRAE Standard 52.2. The

average dust spot efficiency is no less than 35 to 40 percent when tested in accordance with

ASHRAE Standard 52.1 atmospheric dust spot method.

Units equipped with 1-in. MERV 13 filters have a rating based on ASHRAE Standard 52.2. The

average dust spot efficiency is no less than 90 percent efficiency on 1–3 micron particles and

greater than 90 percent efficiency on 3–10 micron particles when tested in accordance with

ASHRAE Test Standard 52.2.

UV-PRC004-EN.book Page 64 Monday, February 4, 2013 11:01 AM

Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the

leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad

portfolio of advanced controls and HVAC systems, comprehensive building services, and parts.

For more information, visit www.Trane.com.

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

We are committed to using environmentally

conscious print practices that reduce waste.

© 2013 Trane All rights reserved

UV-PRC004-EN 04 Feb 2013

Supersedes UV-PRC004-EN (18 Jun 2012)

UV-PRC004-EN.book Page 65 Monday, February 4, 2013 11:01 AM