Trane Air Conditioner RT DS 10 User Manual

RT-DS-10

April 1999

Packaged

Rooftop

Air Conditioners

23 to 42 Ton (81-148 kW)

™

Voyager Commercial – 50 HZ

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Contents

Standard Features

Optional Features

Features and Benefits

Model Number Description

General Data

Factory installed and commissioned

microelectronic controls

Electric heat

•

Natural gas heat

™

Trane 3-D Scroll compressors

LP gas heat (kit only)

Dedicated downflow or horizontal

configuration

Power exhaust

Barometric relief

CV or VAV control

High efficiency 2” (51 mm) throwaway

filters

™

FROSTAT coil frost protection on all

units

High efficiency 4” (102 mm) throwaway

filters

High efficiency supply fan motors

Manual fresh air damper

Economizer with dry bulb control

Economizer with reference enthalpy

control

Economizer with differential

(comparative) enthalpy control

Inlet guide vanes on VAV units

Service valves

Through-the-base electrical provision

Factory mounted disconnect with

external handle (non-fused)

Integrated Comfort system control

option

•

Supply air overpressurization

protection on VAV units

Supply airflow proving

Emergency stop input

Compressor lead-lag

Occupied-unoccupied switching

Timed override activation

FC supply fans

•

Application Considerations

Selection Procedure

•

Two-inch (51 mm) standard efficiency

filters

Finish exceeds salt spray requirements

of ASTM B117

•

™

Performance Adjustment Factors 17

Ventilation override

Hinged service access

Factory installed condenser

coil guards

Performance Data

Electrical Data

Controls

Dimensional Data

Weights

Field Installed Sensors

Mechanical Specifications

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Features

and

Benefits

Trane 3-D^®Scroll Compressor

•

Simple Design with 70% Fewer Parts

Fewer parts than an equal capacity

reciprocating compressor means

significant reliability and efficiency

benefits. The single orbiting scroll

eliminates the need for pistons,

connecting rods, wrist pins and valves.

Fewer parts lead to increased reliability.

Fewer moving parts, less rotating mass

and less internal friction means greater

efficiency than reciprocating

compressors.

Patented 3-D Scroll Compliance

Trane 3-D Scroll compliance provides

important reliability and efficiency

benefits. 3-D compliance allows the

orbiting scrolls to touch in all three

dimensions, forming a completely

enclosed compression chamber which

leads to increased efficiency. In

addition, 3-D compliance means the

orbiting scrolls only touch with enough

force to create a seal so there is no

wear between the scroll plates. The

fixed and orbiting scrolls are made of

high strength cast iron which results in

less thermal distortion, less leakage,

and higher efficiencies. The most

outstanding feature of the scroll

compressor 3-D compliance is that the

slugging will not cause failure. In a

reciprocating compressor, however, the

liquid or dirt can cause serious

damage.

Low Torque Variation

The 3-D Scroll compressor has a very

smooth compression cycle with torque

variations that are only 30 percent of

that produced by a reciprocating

compressor. This means the scroll

compressor imposes very little stress

on the motor for greater reliability. Low

torque variation means reduced noise

and vibration.

Suction Gas Cooled Motor

Compressor motor efficiency and

reliability is further optimized with this

design. Cool suction gas keeps the

motor cooler for longer life and better

efficiency.

Proven Design Through Testing and

Research

One of two matched scroll plates – the

distinguishing feature of the scroll

compressor.

With over twenty years of development

and testing, Trane 3-D Scroll

compressors have undergone more

than 400,000 hours of laboratory

testing and field operation. This work

combined with over 25 patents makes

Trane the worldwide leader in air

conditioning scroll compressor

technology.

Chart illustrates low torque variation of

3-D Scroll compressors reciprocating

compressor.

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Features

and

Benefits

Quality and Reliability

Forced Combustion Blower

Negative Pressure Gas Valve

Hot Surface Ignitor

Drum and Tube Heat Exchanger

Micro Controls

Drum and Tube Heat Exchanger

The drum and tube heat exchanger is

designed for increased efficiency and

reliability and has utilized improved

technology incorporated in the large

roof top commercial units for almost

20 years.

The negative pressure gas valve will

not allow gas flow unless the

combustion blower is operating. This is

one of our unique safety features.

•

For over 10 years Trane has been

working with microprocessor controls

in the applied equipment markets.

These designs have provided the

technology that has been applied to the

Voyager units.

•

The forced combustion blower supplies

premixed fuel through a single

stainless steel burner screen into a

sealed drum where ignition takes place.

It is more reliable to operate and

maintain than a multiple burner

system.

The Micro provides unit control for

heating, cooling and ventilating

utilizing input from sensors that

measure outdoor and indoor

temperature.

The heat exchanger is manufactured

using aluminized steel with stainless

steel components for maximum

durability. The requirement for cycle

testing of heat exchangers is 10,000

cycles by ANSI Z21.47. This is the

standard required by both UL* and

AGA* for cycle test requirements.

Trane requires the design to be tested

to 2¹/2 times this current standard. The

drum and tube design has been tested

and passed over 150,000 cycles which

is over 15 times the current ANSI

cycling requirements.

•

The hot surface ignitor is a gas ignition

device which doubles as a safety

device utilizing a continuous test to

prove the flame. The design is cycle

tested at the factory for quality and

reliability.

•

The Micro improves quality and

reliability through the use of time-

tested microprocessor controls and

logic. The Micro:

– prevents the unit from short cycling,

considerably improving compressor

life.

– ensures that the compressor will run

for a specific amount of time which

allows oil to return for better

lubrication, enhancing the reliability of

the commercial compressor.

*Apply to 60 HZ testing standards only.

The Voyager with the Micro reduces

the number of components required to

operate the unit, thereby reducing

possibilities for component failure.

•

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Features

and

Benefits

Ease of Installation

Contractors look for lower installation

(jobsite) costs. Voyager’s

conversionless units provide many

time and money saving features.

Conversionless Units

The dedicated design units (either

downflow or horizontal) require no

panel removal or alteration time to

convert in the field – a major cost

savings during installation.

•

Improved Airflow

U-shaped airflow allows for improved

static capabilities. The need for high

static motor conversion is minimized

and time isn’t spent changing to high

static oversized motors.

Excellent Part-Load Efficiency

The Scroll compressor’s unique design

allows it to be applied in a passive

parallel manifolded piping scheme,

something that a “recip” just doesn’t

do very well.

•

Single Point Power

A single electrical connection powers

the unit.

When the unit begins stage back at part

load it still has the full area and circuitry

of its evaporator and condenser coils

available to transfer heat. In simple

terms this means superior part-load

efficiencies (IPLV) and lower unit

operating costs.

Micro

FC Fans with Inlet Guide Vanes

Trane’s forward-curved fans with inlet

guide vanes pre-rotate the air in the

direction of the fan wheel, decreasing

static pressure and horsepower,

essentially unloading the fan wheel.

The unloading characteristics of a

Trane FC fan with inlet guide vanes

result in superior part load

The function of the Micro replaces the

need for field installed anti-short-cycle

timer and time delay relays. The Micro

ensures that these controls are integral

to the unit. The contractor no longer

has to purchase these controls as

options and pay to install them.

•

The wiring of the low voltage

connections to the unit and the zone

sensors is as easy as 1-1, 2-2, and 3-3.

This simplified system makes it easier

for the installer to wire.

performance.

Rigorous Testing

All of Voyager’s designs were

rigorously rain tested at the factory to

ensure water integrity.

•

Actual shipping tests are performed to

determine packaging requirements.

Units are test shipped around the

country. Factory shake and drop tested

as part of the package design process

to help assure that the unit will arrive at

your job site in top condition.

Rigging tests include lifting a unit into

the air and letting it drop one foot,

assuring that the lifting lugs and rails

hold up under stress.

•

We perform a 100% coil leak test at the

factory. The evaporator and condenser

coils are leak tested at 200 psig and

pressure tested to 450 psig.

All parts are inspected at the point of

final assembly. Sub-standard parts are

identified and rejected immediately.

•

Every unit receives a 100% unit run test

before leaving the production line to

make sure it lives up to rigorous Trane

requirements.

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Features

and

Benefits

Easy Access Low Voltage

Terminal Board

Serviceability

Today’s owners are more conscious of

the cost of service and maintenance.

Voyager was designed with input from

service contractors. Their information

helped us design a unit that would get

the serviceman off the job quicker and

save the owner money. Here is why

Voyager can save money in service.

Voyager’s Low Voltage Terminal Board

is external to the electrical control

cabinet. It is extremely easy to locate

and attach the thermostat wire. This is

another cost and timesaving

installation feature.

Value

Low Ambient Cooling

All Voyager Commercial units have

cooling capabilities down to 0°F

(-17.8°C) as standard.

Voyager’s Simpler Design

The Voyager design uses fewer parts

than previous units. Since it is simpler

in design, it is easier to diagnose.

Micro

Power Exhaust Option

The Micro requires no special tools to

run the Voyager unit through its paces.

Simply place a jumper between Test 1

and Test 2 terminals on the Low

Voltage Terminal Board and the unit

will walk through its operational steps

automatically.

•

Provides exhaust of the return air when

using an economizer to maintain

proper building pressurization. Great

for relieving most building

overpressurization problems.

Micro Benefits

The Micro in the Voyager units has

built-in anti-short-cycle timer, time

delay relay and minimum “on” time

controls. These controls are functions

of the Micro and are factory tested to

assure proper operation.

•

– The unit automatically returns control

to the zone sensor after stepping

through the test mode a single time,

even if the jumper is left on the unit.

As long as the unit has power and the

“system on” LED is lit, the Micro is

operational. The light indicates that the

Micro is functioning properly.

•

The Micro softens electrical “spikes” by

staging on fans, compressors and

heaters.

•

The Micro features expanded

The Intelligent Fallback or Adaptive

Control is a benefit to the building

occupant. If a component goes astray,

the unit will continue to operate at

predetermined temperature setpoint.

diagnostic capabilities when utilized

™

with Trane’s Integrated Comfort

Systems.

Some zone sensor options have central

control panel lights which indicate the

mode the unit is in and possible

diagnostic information (dirty filters for

example).

Intelligent Anticipation is a standard

feature of the Micro. It functions

constantly as the Micro and zone

sensor work together in harmony to

provide tighter comfort control than

conventional electromechanical

thermostats.

•

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Features

and

Benefits

™

VariTrac

CCP

™

VariTrac

Trane’s changeover VAV System for

light commercial applications is also

available. Coupled with Voyager

Commercial, it provides the latest in

technological advances for comfort

management systems and can allow

thermostat control in every zone served

™

by VariTrac .

Downflow and Horizontal Economizers

The economizers come with three

options of controls (dry bulb, enthalpy

and differential enthalpy).

Trane Communication Interface or TCI

is available factory or field installed.

This module when applied with the

Micro easily interfaces with Trane’s

™

Integrated Comfort system.

Trane factory built roof curbs are

available for all units.

One of Our Finest Assets:

Trane Commercial Sales Engineers are

a Support group that can assist you

with:

– Product

– Application

– Service

– Training

– Special Applications

– Specifications

– Computer Programs and more

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Model

Number

Description

1,2

400

4,5,6

10 11 12 13 14 15 16 17

Digit 16 – System Control

Digit 11 – Exhaust

0 = None

1 = Barometric Relief

Digits 1, 2 – Unit Function

1 = Constant Volume

TC = DX Cooling, No Heat

2 = VAV Supply Air Temperature Control

TE = DX Cooling, Electric Heat

YC = DX Cooling, Natural Gas Heat

w/o Inlet Guide Vanes

3 = VAV Supply Air Temperature Control

w/Inlet Guide Vanes

Note: Zone sensors are not included with

option and must be ordered as a separate

accessory.

(Available w/Economizer only)

2 = Power Exhaust Fan

(Available w/Economizer only)

Digit 3 – Unit Airflow Design

D = Downflow Configuration

H = Horizontal Configuration

Digit 12 – Filter

A = Standard 2” (51 mm) Throwaway Filters

B = High Efficiency 2” (51 mm) Throwaway

Filters

Digits 4, 5, 6 – Nominal Cooling Capacity

275 = 22.9 Tons (82 kW)

305 = 25.4 Tons (89 kW)

350 = 29.2 Tons (105 kW)

400 = 33.3 Tons (120 kW)

500 = 41.7 Tons (148 kW)

Digit 17+ – Miscellaneous

A = Service Valves (See Note 2)

B = Through the Base Electrical Provision

C = Non-Fused Disconnect Switch with

External Handle

C = High Efficiency 4” (102 mm) Throwaway

Filters

Digit 13 – Supply Fan Motor, HP

1 = 7.5 Hp Std. Eff. (5.6 kW)

2 = 10 Hp Std. Eff. (7.5 kW)

3 = 15 Hp Std. Eff. (11.2 kW)

4 = 20 Hp Std. Eff. (14.9 kW)

D = Factory-Powered 15A GFI

Convenience Outlet and Non-Fused

Disconnect Switch with

External Handle

E = Field-Powered 15A GFI

Convenience Outlet

F = ICS Control Option – Trane

Communication Interface, Supply Air

Sensing and Clogged Filter Switch

G = Ventilation Override

H = Hinged Service Access

J = Condenser Coil Guards

Digit 7 – Major Development Sequence

A = First

B = Second, Etc.

Digit 14 – Supply Air Fan Drive Selections

Digit 8 – Power Supply (See Note 1)

C = 380/50/3

D = 415/50/3

(See Note 3)

A = 458

B = 500

C = 541

D = 583

E = 625

F = 658

G = 664

H = 417

J = 437

K = 479

L = 521

M = 562

N = 604

Digit 9 – Heating Capacity (See Note 4)

0 = No Heat (TC only)

L = Low Heat (YC only)

H = High Heat (YC only)

Note: When second digit is “E” for Electric

Heat, the following values apply in the

ninth digit.

Digit 15 – Fresh Air Selection

A = No Fresh Air

380V / 415V

B = 0-25% Manual Damper

C = 0-100% Economizer, Dry Bulb Control

D = 0-100% Economizer, Reference

Enthalpy Control

E = 0-100% Economizer, Differential

Enthalpy Control

A = 23

B = 34

C = 45

D = 56

E = 68

27 kW

40 kW

54 kW

67 kW

81 kW

F = “C” Option and Low Leak Fresh

Air Damper

G = “D” Option and Low Leak Fresh

Air Damper

Digit 10 – Design Sequence

A = First

H = “E” Option and Low Leak Fresh

Air Damper

Note:

1. All voltages are across-the-line starting only.

2. Option includes Liquid, Discharge, Suction Valves.

3. Supply air fan drives A thru G are used with 22.9-29.2 ton (82-105 kW) units only and

drives H thru N are used with 33.3 and 41.7 ton (120-148 kW) units only.

4. Electric Heat kW ratings are based upon voltage ratings of 380/415 V. Heaters A, B, C, D

are used with 22.9-29.2 ton (82-105 kW) units only and heaters B, C, D, E are used with

33.3-41.7 ton (120-148 kW) units only.

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General

Data

Table 10-1 – General Data – 23-25 Tons

TC*275 (23 Tons)

TC*305 (25 Tons)

Cooling Performance¹

Nominal Gross Capacity(Btuh)

System Power kW

Compressor

279,000 (81.8 kW)

26.1

304,000 (89.1 kW)

30.2 kW

Number/Type

2/Scroll

8.4/12.5

2875

2/Scroll

11.7

2875

Nominal Motor HP (ea)

Motor RPM

Natural Gas Heat²

Heating Input(Btuh)

First Stage

Low

High

Low

High

290,000 (85.0 kW)

250,000 (73.3 kW)

243,000 (69.0 kW)

202,500 (59.4 kW)

500,000 (147 kW)

425,000 (125 kW)

405,000 (119 kW)

344,250 (101 kW)

290,000 (85.0 kW)

250,000 (73.3 kW)

243,000 (69.0 kW)

202,500 (59.4 kW)

500,000 (147 kW)

425,000 (125 kW)

405,000 (119 kW)

344,250 (101 kW)

Heating Output(Btuh)

First Stage

Steady State Efficiency(%) ³

No. Burners/No. Stages

Gas Connect Pipe Size (in)

Outdoor Coil - Type

Tube Size OD (in)

Face Area (sq ft)

1/2

0.75 (19 mm)

LANCED

0.375 (10 mm)

51.3 (4.8 sq m)

2/16

HI-PERFORM

0.500 (13 mm)

31.7 (2.9 sq m)

2/14

0.75 (19 mm)

LANCED

0.375 (10 mm)

51.3 (4.8 sq m)

2/16

HI-PERFORM

0.500(13 mm)

31.7 (2.9 sq m)

2/14

Rows/Fins Per Inch (25mm)

Indoor Coil - Type

Tube Size OD (in)

Face Area (sq ft)

Rows/Fins Per Inch (25mm)

Refrigerant Control

PVC Drain Connect No./Size (in)

Outdoor Fan Type

No. Used

TXV

1/1.25 (1/32 mm)

PROP FAN

1/1.25 (1/32 mm)

PROP FAN

Diameter (in.)

Drive Type/No. Speeds

Cfm

No. Motors (RPM)

Motor HP

Indoor Fan Type/No. Used

Diameter (in)

Width (in)

Drive Type

28.0 (711 mm)

DIRECT/1

20,450 (9650 L/s)

3 (940)

0.75 (0.56 kW)

FC/1

22.4 (568 mm)

22.0 (559 mm)

BELT

28.0 (711 mm)

DIRECT/1

20,450 (9650 L/s)

3 (940)

0.75 (0.56 kW)

FC/1

22.4 (568 mm)

22.0 (559 mm)

BELT

No. Speeds/No. Motors

Motor HP

Motor RPM/Frame Size

Filters - Type

Furnished/No.

1/1

7.5 (5.6 kW)

1460/213T

THROWAWAY

Yes/16

7.5 (5.6 kW)

1460/213T

THROWAWAY

Yes/16

Recommended Size (in)

Refrigerant Type

Factory Charge (lbs) ⁴

16X 20 X2 (406X 508 X51mm)

R-22

16x20x2 (406X 508x51mm)

R-22

46 (21 kg)

Notes:

1. Cooling Performance is rated at 95°F (35°C) ambient, 80°F (27°C) entering dry bulb, 67°F (19°C) entering wet bulb. Gross capacity does not include the effect of

fan motor heat.

2. Heating Performance Limit settings and ratings data were established and approved under laboratory test conditions using American National Standards.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.

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General

Data

Table 11-1 – General Data – 29-33 Tons

TC*350 (29 Tons)

TC*400 (33 Tons)

Cooling Performance¹

Nominal Gross Capacity(Btuh)

System Power kW

Compressor

375,000 (105 kW)

34.0

409,000 (120 kW)

42.5

Number/Type

2/Scroll

12.5

2875

3/Scroll

[email protected]/8.4

2875

Nominal Motor HP (ea)

Motor RPM

Natural Gas Heat²

Heating Input (Btuh)

First Stage

Low

High

Low

High

290,000 (85.0 kW)

250,000 (73.3 kW)

243,000 (69.0 kW)

202,500 (59.4 kW)

500,000 (147 kW)

425,000 (125 kW)

405,000 (119 kW)

344,250 (101 kW)

335,000 (98.2 kW)

300,000 (87.9 kW)

271,350 (80.0 kW)

243,500 (71.4 kW)

670,000 (196 kW)

600,000 (176 kW)

542,700 (159 kW)

486,000 (166 kW)

Heating Output(Btuh)

First Stage

Steady State Efficiency(%)³

No. Burners/No. Stages

Gas Connect Pipe Size (in)

Outdoor Coil - Type

Tube Size OD (in)

Face Area (sq ft)

1/2

0.75 (19 mm)

LANCED

0.375 (10 mm)

51.3 (4.8 sq m)

2/16

HI-PERFORM

0.500 (13 mm)

31.7 (2.9 sq m)

2/15

0.75 (19 mm)

LANCED

0.375 (10 mm)

69.8 (6.5 sq m)

2/16

HI-PERFORM

0.500 (13 mm)

37.5 (3.5 sq m)

2/14

Rows/Fins Per Inch (25mm)

Indoor Coil - Type

Tube Size (in) OD

Face Area (sq ft)

Rows/Fins Per Inch (25mm)

Refrigerant Control

PVC Drain Connect No./Size (in)

Outdoor Fan Type

No. Used

TXV

1/1.25 (1/32 mm)

PROP FAN

1/1.25 (1/32 mm)

PROP FAN

Diameter (in.)

Drive Type/No. Speeds

Cfm

No. Motors (RPM)

Motor HP

Indoor Fan Type/No. Used

Diameter (in)

Width (in)

Drive Type

28.0 (711 mm)

DIRECT/1

20,400 (9650 L/s)

3 (940)

0.75 (0.56 kW)

FC/1

22.4 (568 mm)

22.0 (559 mm)

BELT

28.0 (711 mm)

DIRECT/1

26,200 (12,400 L/s)

4 (940)

0.75 (0.56 kW)

FC/1

25.0 (635 mm)

BELT

No. Speeds/No. Motors

Motor HP

Motor RPM/Frame Size

Filters - Type

Furnished/No.

1/1

7.5 (5.6 kW)

1460/213T

THROWAWAY

Yes/16

10.0 (7.5 kW)

1460/215T

THROWAWAY

Yes/17

Recommended Size (in)

Refrigerant Type

16x20x2 (406x508x51mm)

R-22

16X 20 X2 (406X 508 X51mm)

R-22

Factory Charge Ciruit #1 (lbs) ⁴

Factory Charge Circuit # 2 (lbs)

52 (24 kg)

–

24.5 (11.1 kg)

42.5 (19.3 kg)

Notes:

1. Cooling Performance is rated at 95°F (35°C) ambient, 80°F (27°C) entering dry bulb, 67°F (19°C) entering wet bulb. Gross capacity does not include the effect of

fan motor heat.

2. Heating Performance Limit settings and ratings data were established and approved under laboratory test conditions using American National Standards.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service instructions.

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General

Data

Table 12-1 – General Data – 43 Tons

TC*500 (42Tons)

Cooling Performance ¹

Nominal Gross Capacity(Btuh)

System Power kW

Compressor

505,000 (148 kW)

52.9

Number/Type

3/Scroll

12.5

2875

Nominal Motor HP (ea)

Motor RPM

Natural Gas Heat²

Heating Input(Btuh)

First Stage

Low

High

335,000 (98.2 kW)

300,000 (87.9 kW)

271,350 (79.5 kW)

243,500 (71.4 kW)

670,000 (196 kW)

600,000 (176 kW)

542,700 (159 kW)

486,000 (166 kW)

Heating Output(Btuh)

First Stage

Steady State Efficiency(%)³

No. Burners/No. Stages

Gas Connect Pipe Size (in)

Outdoor Coil - Type

Tube Size OD (in)

Face Area(sq ft)

1/2

0.75 (19 mm)

LANCED

0.375 (10 mm)

69.8 (6.5 sq m)

2/16

HI-PERFORM

0.500 (13 mm)

37.5 (3.5 sq m)

3/13

Rows/Fins Per Inch (25mm)

Indoor Coil - Type

Tube Size OD (in)

Face Area (sq ft)

Rows/Fins Per Inch (25mm)

Refrigerant Control

PVC Drain Connect No./Size (in)

Outdoor Fan Type

No. Used

TXV

1/1.25 (1/32 mm)

PROP FAN

Diameter (in.)

Drive Type/No. Speeds

Cfm

No. Motors (RPM)

Motor HP

Indoor Fan Type/No. Used

Diameter (in)

Width (in)

Drive Type

28.0 (711 mm)

DIRECT/1

26,200 (12,400 L/s)

4 (940)

0.75 (0.56 kW)

FC/1

25.0 (635 mm)

BELT

No. Speeds/No. Motors

Motor HP

Motor RPM/Frame Size

Filters - Type

Furnished/No.

1/1

10.0 (7.5 kW)

1460/215T

THROWAWAY

Yes/17

Recommended Size (in)

Refrigerant Type

16x20x2 (406x508x51mm)

R-22

Factory Charge Circuit #1 (lbs) ⁴

Factory Charge Circuit #1

23.9 (10.8 kg)

49.4 (22.5 kg )

Notes:

1. Cooling Performance is rated at 95°F (35°C) ambient, 80°F (27°C) entering dry bulb, 67°F (19°C) entering

wet bulb. Gross capacity does not include the effect of fan motor heat.

2. Heating Performance Limit settings and ratings data were established and approved under laboratory

test conditions using American National Standards.

3. Steady State Efficiency is rated in accordance with DOE test procedures.

4. Refrigerant charge is an approximate value. For a more precise value, see unit nameplate and service

instructions.

Table 12-2 – Economizer Outdoor Air Damper Leakage (Of Rated Airflow)

∆P Across Dampers (In. WC) (Pa)

0.5 In. (124.5 Pa)

1.5%

1.0 In. (249 Pa)

2.5%

Standard

Optional “Low Leak”

0.5%

1.0%

Note: Above data based on tests completed in accordance with AMCA Standard 575.

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Application

Considerations

Exhaust Air Options

When is it necessary to provide

building exhaust?

Barometric Relief Dampers

Barometric relief dampers consist of

gravity dampers which open with

increased building pressure. As the

building pressure increases, the

pressure in the unit return section also

increases, opening the dampers and

relieving air. Barometric relief may be

used to provide relief for single story

buildings with no return ductwork and

exhaust requirements less than

25 percent.

Bhp must be multiplied by the air

density ratio to obtain the actual

operating bhp.

Whenever an outdoor air economizer is

used, a building generally requires an

exhaust system. The purpose of the

exhaust system is to exhaust the

proper amount of air to prevent over or

under-pressurization of the building.

In order to better illustrate this

procedure, the following example is

used:

Consider a 29-ton (105 kW) rooftop unit

that is to deliver 9,160 actual cfm (4323

l/s) at 1.50 inches total static pressure

(tsp) (38 mm, 373 Pa), 55°F (12.8°C)

leaving air temperature, at an elevation

of 5,000 ft. (1524 m).

A building may have all or part of its

exhaust system in the rooftop unit.

Often, a building provides exhaust

external to the air conditioning

equipment. This external exhaust must

be considered when selecting the

rooftop exhaust system.

Altitude Corrections

The rooftop performance tables and

curves of this catalog are based on

standard air (.075 lbs/ft) (.034 kg/cm). If

the rooftop airflow requirements are at

other than standard conditions (sea

level), an air density correction is

needed to project accurate unit

performance.

From Figure 17-1, the air density ratio

is 0.86.

™

Voyager Commercial rooftop units

Tsp = 1.50 inches/0.86 = 1.74 inches tsp.

374/.86 = 434 Pa.

offer two types of exhaust systems:

Power exhaust fan.

From the performance tables: a 29-ton

(105 kW) rooftop will deliver 9,160 cfm

at 1.74 inches tsp 4323 l/s at 434 Pa) at

651 rpm and 5.51 bhp (4.11 kW).

Figure 17-1 shows the air density ratio

at various temperatures and elevations.

Trane rooftops are designed to operate

between 40 and 90°F (4.4 and 32.2°C)

leaving air temperature.

Barometric relief dampers.

Application Recommendations

Power Exhaust Fan

The exhaust fan option is a dual, non-

modulating exhaust fan with

approximately half the air-moving

capabilities of the supply fan system.

The experience of The Trane Company

that a non-modulating exhaust fan

selected for 40 to 50 percent of nominal

supply cfm can be applied successfully.

The rpm is correct as selected –

651 rpm.

The procedure to use when selecting a

supply or exhaust fan on a rooftop for

elevations and temperatures other than

standard is as follows:

Bhp = 5.51 x 0.86 = 4.74 bhp actual.

kW = 4.11 x 0.86 = 3.5 kW

Compressor MBh, SHR, and kW should

be calculated at standard and then

converted to actual using the correction

factors in Table 17-2. Apply these

factors to the capacities selected at

standard cfm so as to correct for the

reduced mass flow rate across the

condenser.

First, determine the air density ratio

using Figure 17-1.

The power exhaust fan generally

should not be selected for more than

40 to 50 percent of design supply

airflow. Since it is an on/off non-

modulating fan, it does not vary

exhaust cfm with the amount of

outside air entering the building.

Therefore, if selected for more than

40 to 50 percent of supply airflow, the

building may become under-

Divide the static pressure at the

nonstandard condition by the air

density ratio to obtain the corrected

static pressure.

Heat selections other than gas heat will

not be affected by altitude. Nominal

gas capacity (output) should be

multiplied by the factors given in

Table 17-3 before calculating the

heating supply air temperature.

Use the actual cfm and the corrected

static pressure to determine the fan

rpm and bhp from the rooftop

performance tables or curves.

pressurized when economizer

operation is allowing lesser amounts of

outdoor air into the building. If,

The fan rpm is correct as selected.

however, building pressure is not of a

critical nature, the non-modulating

exhaust fan may be sized for more than

50 percent of design supply airflow.

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Application

Considerations

Acoustical Considerations

Clearance Requirements

Duct Design

Proper placement of rooftops is critical

to reducing transmitted sound levels to

the building. The ideal time to make

provisions to reduce sound

The recommended clearances

It is important to note that the rated

capacities of the rooftop can be met

only if the rooftop is properly installed

in the field. A well designed duct

system is essential in meeting these

capacities.

identified with unit dimensions should

be maintained to assure adequate

serviceability, maximum capacity and

peak operating efficiency. A reduction

in unit clearance could result in

condenser coil starvation or warm

condenser air recirculation. If the

clearances shown are not possible on a

particular job, consider the following:

Do the clearances available allow for

major service work such as changing

compressors or coils?

Do the clearances available allow for

proper outside air intake, exhaust air

removal and condenser airflow?

If screening around the unit is being

used, is there a possibility of air

recirculation from the exhaust to the

outside air intake or from condenser

exhaust to condenser intake?

transmissions is during the design

phase. And the most economical

means of avoiding an acoustical

problem is to place the rooftop(s) away

from acoustically critical areas. If

possible, rooftops should not be

located directly above areas such as:

offices, conference rooms, executive

office areas and classrooms. Instead,

ideal locations might be over corridors,

utility rooms, toilets or other areas

where higher sound levels directly

below the unit(s) are acceptable.

The satisfactory distribution of air

throughout the system requires that

there be an unrestricted and uniform

airflow from the rooftop discharge

duct. This discharge section should be

straight for at least several duct

diameters to allow the conversion of

fan energy from velocity pressure to

static pressure.

•

However, when job conditions dictate

elbows be installed near the rooftop

outlet, the loss of capacity and static

pressure may be reduced through the

use of guide vanes and proper

direction of the bend in the elbow. The

high velocity side of the rooftop outlet

should be directed at the outside radius

of the elbow rather than the inside.

Several basic guidelines for unit

placement should be followed to

minimize sound transmission through

the building structure:

Actual clearances which appear

inadequate should be reviewed with a

local Trane sales engineer.

Never cantilever the compressor end of

the unit. A structural cross member

must support this end of the unit.

When two or more units are to be

placed side by side, the distance

between the units should be increased

to 150 percent of the recommended

single unit clearance. The units should

also be staggered as shown for two

reasons:

Locate the unit’s center of gravity

close to or over column or main

support beam.

If the roof structure is very light,

roof joists must be replaced by a

structural shape in the critical areas

described above.

To reduce span deflection if more than

one unit is placed on a single span.

Reducing deflection discourages sound

transmission.

If several units are to be placed on one

span, they should be staggered to

reduce deflection over that span.

To assure proper diffusion of exhaust

air before contact with the outside air

intake of adjacent unit.

It is impossible to totally quantify the

effect of building structure on sound

transmission, since this depends on the

response of the roof and building

members to the sound and vibration of

the unit components. However, the

guidelines listed above are experience-

proven guidelines which will help

reduce sound transmissions.

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Selection

Procedure

Selection of Trane commercial air

Step 1 – A summation of the peak

cooling load and the outside air

ventilation load shows: 22.5 tons + 1.27

tons = 23.77 (79 kW + 4.45 kW = 83.45)

required unit capacity. From Table 19-1,

25 ton (89 kW) unit capacity at 80 DB/67

WB (27/19°C), 95°F entering the

Step 4 – Determine total required unit

cooling capacity:

Required capacity = total peak load +

O.A. load + supply air fan motor heat.

conditioners is divided into five basic

areas:

Cooling capacity

From Figure 16-1, the supply air fan

motor heat for 5.85 bhp = 15 MBh.

Heating capacity

Capacity = 270 + 15 + 15 =

300 MBh (89 kW)

condenser and 10,000 total peak supply

cfm (4720 l/s), is YC/TC/TE*305.

Air delivery

Step 5 – Determine unit capacity:

From Table 19-2 unit capacity at 81.5

DB/67 WB entering the evaporator,

10,000 supply air cfm, 95°F (35°C)

entering the condenser about 305.6

MBh (89.5 kW) with 241 MBh (70.6 kW)

sensible.

Step 2 – Having selected the correct

unit, the supply fan and exhaust fan

motor bhp must be determined.

Unit electrical requirements

Unit designation

Supply Air Fan:

Determine unit static pressure at

design supply cfm:

Factors Used In Unit Cooling Selection:

Summer design conditions – 95 DB/

External static pressure

1.25 inches

(310 Pa)

76 WB (35/24.4°C), 95°F (35°C) entering

air to condenser.

Step 6 – Determine leaving air

temperature:

Unit sensible heat capacity, corrected

for supply air fan motor heat 241 - 15 =

226 MBh (66.2 kW).

Heat exchanger

(Table 28-1)

.12 inches

(30 Pa)

Summer room design conditions –

76 DB/66 WB (24.4/18.9°C).

High efficiency filter 2” (25 mm)

(Table 28-1)

.07 inches

Supply air dry bulb temperature

difference = 226 MBh ÷ (1.085 x

10,000 cfm) = 20.8°F (-6.2°C)

Total peak cooling load – 270 MBh

(17 Pa)

(79 kW) (22.5 tons).

Economizer

(Table 28-1)

.07 inches

(17 Pa)

1.50 inches

(374 Pa)

Total peak supply cfm – 10,000 cfm

Supply air dry bulb: 81.5-20.8 = 60.7

(15.9°C)

(4720 l/s).

Unit total static pressure

Unit enthalpy difference = 305.6 ÷

(4.5 x 10,000) = 6.79

Btu/lb leaving enthalpy = h (ent WB)

= 31.62

Leaving enthalpy = 31.62 Btu/lb -

6.79 Btu/lb = 24.83 Btu/lb.

External static pressure – 1.0 inches wc

Using total cfm of 10,000 (4720 l/s) and

total static pressure of 1.50 inches

(38 mm), enter Table 24-1. Table 24-1

shows 5.35 bhp (4 kW) with 616 rpm.

(249 Pa).

Return air temperatures – 80 DB/66°F

WB (26.7/18.9°C).

Step 3 – Determine evaporator coil

entering air conditions. Mixed air dry

bulb temperature determination.

From Table 17-1, the leaving air wet

bulb temperature corresponding to an

enthalpy of 24.8 Btu/lb = 57.5.

Leaving air temperatures = 61.7 DB/

57.5 WB (15.9/13.9°C).

Return air cfm – 3540 cfm (1671 l/s).

Outside air ventilation cfm and load –

Using the minimum percent of OA

(1,000 cfm ÷ 10,000 cfm = 10 percent),

determine the mixture dry bulb to the

evaporator. RADB + % OA

(OADB - RADB) = 80 + (0.10) (95 - 80) =

80 + 1.5 = 81.5°F [26.7 + 1.5 = 28°C).

1000 cfm and 15.19 MBh (1.27 tons or

4.45 kW) 472 l/s.

Unit accessories include:

Aluminized heat exchanger – high heat

module.

Approximate wet bulb mixture

temperature:

2” Hi-efficiency throwaway filters.

RAWB + OA (OAWB - RAWB) =

66 + (0.10) (76-66) = 68 + 1 = 67°F.

Exhaust fan.

A psychrometric chart can be used to

more accurately determine the mixture

temperature to the evaporator coil.

Economizer cycle.

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Selection

Procedure

Table 23-1 also shows an air

temperature rise of 21.2°F for 10,000

cfm through the 90 kW heat module.

To select the drive, enter Table 29-1 for

a 305 unit. Select the appropriate drive

for the applicable rpm range. Drive

selection letter E with a range of 625

rpm, is required for 616 rpm. Where

altitude is significantly above sea level,

use Table 17-2 and 17-3, and Figure

17-1 for applicable correction factors.

Winter outdoor design conditions –

0°F (17.7°C).

Unit supply temperature at design

heating conditions = mixed air

temperature + air temperature rise =

65.38 + 21.2 = 86.58°F.

Total return air temperature – 72°F

(22.2°C).

Winter outside air minimum ventilation

load and cfm – 1,000 cfm and

87.2 MBh.

Natural Gas Heating System

Assume natural gas supply – 1000

Btu/ft³. From Table 23-4, select the low

heat module (243 MBh output) to

satisfy 222 at unit cfm.

Unit Electrical Requirements

Selection procedures for electrical

requirements for wire sizing amps,

maximum fuse sizing and dual element

fuses are given in the electrical service

selection of this catalog.

Peak heating load 150 MBh.

Utilizing unit selection in the cooling

capacity procedure.

Mixed air temperature = RADB +

% O.A. (OADB - RADB) = 72

+ (0.10) (0-72) = 64.8°F.

Supply air fan motor heat temperature

rise = 20,600 Btu ÷ (1.085 x 10,000) cfm

= 1.38°F.

Mixed air temperature entering heat

module = 64.8 + 1.58 = 65.38°F.

Total winter heating load = peak

heating + ventilation load - total fan

motor heat = 150 + 87.2 - 15 =

222.2 MBh.

Table 23-4 also shows air temperature

rise of 37.3°F for 10,000 cfm through

heating module.

Unit Designation

After determining specific unit

characteristics utilizing the selection

procedure and additional job

information, the complete unit model

number can be developed. Use the

model number nomenclature on

page 9.

Unit supply temperature design

heating conditions = mixed air

temperature + air temperature rise =

65.38 + 33.5 = 98.89°F.

Air Delivery Procedure

Supply air fan bhp and rpm selection.

Unit supply air fan performance shown

in Table 23-1 includes pressure drops

for dampers and casing losses. Static

pressure drops of accessory

Electric Heating System

components such as heating systems,

and filters if used, must be added to

external unit static pressure for total

static pressure determination.

Unit operating on 415 power supply.

From Table 23-1, kW may be selected

for TC*305 unit to satisfy the winter

heating load. The 67 kW module will do

the job.

The supply air fan motor selected in the

previous cooling capacity

determination example was 5.35 bhp

with 656 rpm. Thus, the supply fan

motor selected is .5 hp.

Chart 16-1 – Fan Motor Heat

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Performance

Adjustment

Factors

Table 17-1 – Enthalpy of Saturated Air

Figure 17-1 – Air Density Ratios

Wet Bulb Temperature

°F

°C

4.4

5.0

5.5

6.1

6.7

7.2

7.8

8.3

Btu Per Lb.

15.23

15.70

16.17

16.66

17.15

17.65

18.16

18.68

19.21

19.75

20.30

20.86

21.44

22.02

22.62

23.22

23.84

24.48

25.12

25.78

26.46

27.15

27.85

28.57

29.31

30.06

30.83

31.62

32.42

33.25

34.09

34.95

35.83

36.74

37.66

38.61

8.9

9.4

10.0

10.6

11.1

11.7

12.2

12.8

13.3

13.9

14.4

15.0

15.6

16.1

16.7

17.2

17.8

18.3

18.9

19.4

20.0

20.6

21.1

21.7

22.2

22.8

23.3

23.9

Table 17-2 – Cooling Capacity Altitude Correction Factors

Altitude ft. (m)

4000 (1219.2)

Sea Level

1.00

1000 (304.8)

0.99

2000 (609.6)

0.99

3000 (914.4)

0.98

5000 (1524.0)

0.96

6000 (1828.8)

0.95

7000 (2133.6)

0.94

Cooling Capacity

Multiplier

0.97

KW Correction

Multiplier

(Compressors)

SHR Correction

Multiplier

1.00

1.01

.98

1.02

.95

1.03

.93

1.04

.91

1.05

.89

1.06

.87

1.07

.85

Maximum

Condenser

Ambient

115°F (46.1°C) 114°F (45.6°C)

113°F (45.0°C)

112°F (44.4°C)

111°F (43.9°C)

110°F (43.3°C)

109°F (42.8°C)

108°F (42.2°C)

Note:

SHR = Sensible Heat Ratio

Table 17-3 – Gas Heating Capacity Altitude Correction Factors

Altitude ft. (m)

3501 To 4500

Sea Level To 2000

200 To 2500

2501 To 3500

4501 To 5500

5501 To 6500

6501 To 7500

(Sea Level To 609.6) (609.9 To 762.0) (762.3 To 1066.8) (1067.1 To 1674.4) (1371.9 To 1675.4) (1676.7 To 1981.2) (1981.5 To 2286.0)

1.00 .92 .88 .84 .80 .76 .72

Capacity Multiplier

Note:

Correction factors are per AGA Std 221.30 – 1964, Part VI, 6.12. Local codes may supersede.

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Performance

Data

Table 18-1 – 23 Ton Gross Cooling Capacities (MBh)

English

Ambient Temperature – Deg F

Entering Wet Bulb Temperature – Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

6900 80

249 197 277 160 307 111 238 191 264 154 294 105 226 184 251 148 280 99 213 177 238 141 265

251 232 278 190 308 147 240 226 265 183 295 141 229 219 252 177 280 135 216 212 239 170 266 128

258 258 279 224 309 182 249 249 267 217 295 176 238 238 254 211 281 169 228 228 240 204 267 162

273 273 281 259 310 215 263 263 269 252 297 209 252 252 257 246 283 202 241 241 244 239 268 196

7500 80

253 205 281 166 312 113 242 199 268 160 298 107 229 192 255 154 283 101 216 185 241 147 268

256 243 282 197 313 151 245 237 270 191 299 145 233 230 256 184 284 139 220 220 242 177 269 132

266 266 283 234 313 188 256 256 271 227 300 182 245 245 258 220 285 175 234 234 244 214 270 169

281 281 287 271 315 225 270 270 275 265 301 218 259 259 262 258 287 211 248 248 248 248 272 205

8000 80

256 212 284 170 315 114 244 205 271 164 301 108 232 198 257 157 286 102 219 191 243 150 271

260 252 285 203 316 155 248 245 273 196 302 149 236 236 259 190 287 142 224 224 245 182 272 136

271 271 287 242 317 194 261 261 274 235 303 187 250 250 261 228 288 181 239 239 247 221 273 174

287 287 291 282 318 232 276 276 279 275 304 225 265 265 265 265 290 219 253 253 253 253 275 212

9000 80

262 224 290 172 321 117 250 217 276 166 306 111 237 210 262 158 291 105 224 203 248 151 275

266 266 291 214 322 162 255 255 278 208 307 155 244 244 264 201 292 149 232 232 249 194 277 142

282 282 293 257 323 204 271 271 280 251 309 197 259 259 267 244 294 193 247 247 252 237 278 184

298 298 297 297 324 246 286 286 286 286 310 240 275 275 275 275 295 233 262 262 262 262 280 226

266 236 294 180 326 120 254 229 281 173 311 113 241 222 266 167 295 107 228 215 251 158 279 100

274 274 296 225 327 168 263 263 282 218 312 162 251 251 268 211 296 155 239 239 253 204 280 148

290 290 299 272 328 214 279 279 285 266 313 207 267 267 272 259 298 200 255 255 257 252 282 193

307 307 307 307 330 260 295 295 295 295 315 253 283 283 283 283 300 247 270 270 270 270 284 240

10000 80

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC= Total gross capacity.

3. SHC= Sensible heat capacity.

Table 18-2 – 82 kW (23 Tons) Gross Cooling Capacity (kW)

Metric

Ambient Temperature – Deg C

29.4

35.0

Entering Wet Bulb Temperature – Deg C

19.4 22.8 16.1 19.4

40.6

46.1

19.4

Ent

16.1

19.4

22.8

16.1

22.8

16.1

22.8

L/s

23.9 73.0 57.7 81.2 46.9 90.0 32.5 69.8 56.0 77.4 45.1 86.2 30.8 66.2 53.9 73.6 43.4 82.1 29.0 62.4 51.9 69.8 41.3 77.7 27.2

3260 26.7 73.6 68.0 81.5 55.7 90.3 43.1 70.3 66.2 77.7 53.6 86.5 41.3 67.1 64.2 73.9 51.9 82.1 39.6 63.3 62.1 70.1 49.8 78.0 37.5

29.4 75.6 75.6 81.8 65.7 90.6 53.3 73.0 73.0 78.3 63.6 86.5 51.6 69.8 69.8 74.4 61.8 82.4 49.5 66.8 66.8 70.3 59.8 78.3 47.5

32.2 80.0 80.0 82.4 75.9 90.9 63.0 77.1 77.1 78.8 73.9 87.1 61.3 73.9 73.9 75.3 72.1 82.9 59.2 70.6 70.6 71.5 70.1 78.6 57.4

23.9 74.2 60.1 82.4 48.7 91.4 33.1 70.9 58.3 78.6 46.9 87.3 31.4 67.1 56.3 74.7 45.1 82.9 29.6 63.3 54.2 70.6 43.1 78.6 27.7

3540 26.7 75.0 71.2 82.7 57.7 91.7 44.3 71.8 69.5 79.1 56.0 87.6 42.5 68.3 67.4 75.0 53.9 83.2 40.7 64.5 64.5 70.9 51.9 78.8 38.7

29.4 78.0 78.0 82.9 68.6 91.7 55.1 75.0 75.0 79.4 66.5 87.9 53.3 71.8 71.8 75.6 64.5 83.5 51.3 68.6 68.6 71.5 62.7 79.1 49.5

32.2 82.4 82.4 84.1 79.4 92.3 65.9 79.1 79.1 80.6 77.7 88.2 63.9 75.9 75.9 76.8 75.6 84.1 61.8 72.7 72.7 72.7 72.7 79.7 60.1

23.9 75.0 62.1 83.2 49.8 92.3 33.4 71.5 60.1 79.4 48.1 88.2 31.7 68.0 58.0 75.3 46.0 83.8 29.9 64.2 56.0 71.2 44.0 79.4 28.1

3780 26.7 76.2 73.9 83.5 59.5 92.6 45.4 72.7 71.8 80.0 57.4 88.5 43.7 69.2 69.2 75.9 55.7 84.1 41.6 65.7 65.7 71.8 53.3 79.7 39.9

29.4 79.4 79.4 84.1 70.9 92.9 56.9 76.5 76.5 80.3 68.9 88.8 54.8 73.3 73.3 76.5 66.8 84.4 53.1 70.1 70.1 72.4 64.8 80.0 51.0

32.2 84.1 84.1 85.3 82.7 93.2 68.0 80.9 80.9 81.8 80.6 89.1 65.9 77.7 77.7 77.7 77.7 85.0 64.2 74.2 74.2 74.2 74.2 80.6 62.1

23.9 76.8 65.7 85.0 50.4 94.1 34.3 73.3 63.6 80.9 48.7 89.7 32.5 69.5 61.6 76.8 46.3 85.3 30.8 65.7 59.5 72.7 44.3 80.6 28.8

4250 26.7 78.0 78.0 85.3 62.7 94.4 47.5 74.7 74.7 81.5 61.0 90.0 45.4 71.5 71.5 77.4 58.9 85.6 43.7 68.0 68.0 73.0 56.9 81.2 41.6

29.4 82.7 82.7 85.9 75.3 94.7 59.8 79.4 79.4 82.1 73.6 90.6 57.7 75.9 75.9 78.3 71.5 86.2 56.6 72.4 72.4 73.9 69.5 81.5 53.9

32.2 87.3 87.3 87.1 87.1 95.0 72.1 83.8 83.8 83.8 83.8 90.9 70.3 80.6 80.6 80.6 80.6 86.5 68.3 76.8 76.8 76.8 76.8 82.1 66.2

23.9 78.0 69.2 86.2 52.8 95.6 35.2 74.4 67.1 82.4 50.7 91.2 33.1 70.6 65.1 78.0 48.9 86.5 31.4 66.8 63.0 73.6 46.3 81.8 29.3

4720 26.7 80.3 80.3 86.8 65.9 95.8 49.2 77.1 77.1 82.7 63.9 91.4 47.5 73.6 73.6 78.6 61.8 86.8 45.4 70.1 70.1 74.2 59.8 82.1 43.4

29.4 85.0 85.0 87.6 79.7 96.1 62.7 81.8 81.8 83.5 78.0 91.7 60.7 78.3 78.3 79.7 75.9 87.3 58.6 74.7 74.7 75.3 73.9 82.7 56.6

32.2 90.0 90.0 90.0 90.0 96.7 76.2 86.5 86.5 86.5 86.5 92.3 74.2 82.9 82.9 82.9 82.9 87.9 72.4 79.1 79.1 79.1 79.1 83.2 70.3

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC= Total gross capacity.

3. SHC= Sensible heat capacity.

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Performance

Data

Table 19-1 – 25 Ton Gross Cooling Capacities (MBh)

English

Ambient Temperature – Deg F

Entering Wet Bulb Temperature – Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

273 215 303 175 336 122 260 208 289 168 321 115 247 200 275 161 305 108 233 193 260 155 289 102

275 252 304 207 337 160 263 245 290 200 322 154 250 238 276 192 306 147 237 231 261 185 290 140

282 282 305 243 338 198 271 271 291 236 323 191 260 260 277 229 307 184 248 248 263 221 291 177

297 297 308 281 339 234 286 286 294 273 324 227 275 275 280 266 308 220 263 263 266 259 293 212

276 221 307 174 340 123 263 214 293 167 325 117 250 207 278 160 309 110 236 199 263 153 292 103

279 261 308 213 341 164 266 254 294 205 325 157 254 247 279 198 310 150 241 239 264 191 293 143

288 288 309 251 341 203 277 277 295 244 326 196 266 266 281 237 310 189 254 254 266 229 294 182

304 304 312 291 343 242 293 293 298 284 328 234 281 281 285 277 312 227 269 269 271 269 296 220

282 234 313 182 347 126 269 227 298 175 331 119 256 219 283 167 314 113 242 211 268 160 297 106

286 278 314 224 348 171 274 271 300 217 332 164 260 260 285 209 315 157 248 248 269 202 299 150

299 299 316 267 349 214 288 288 301 260 333 208 276 276 287 252 317 201 263 263 272 245 300 194

316 316 320 311 350 256 304 304 306 304 334 249 292 292 291 291 318 241 279 279 279 279 301 234

288 246 318 189 352 129 274 239 303 182 336 122 260 231 288 175 319 115 246 223 272 166 301 108

292 292 320 235 353 177 280 280 305 228 337 170 268 268 289 220 320 163 255 255 274 212 303 156

309 309 322 282 354 224 297 297 307 275 338 216 284 284 292 267 321 211 271 271 277 260 304 202

326 326 326 326 356 270 314 314 314 314 340 263 301 301 301 301 323 255 288 288 287 287 306 248

292 258 323 196 357 131 279 250 307 189 340 124 264 242 292 182 323 117 250 235 276 175 305 110

300 300 324 246 358 184 287 287 309 238 341 177 275 275 293 230 324 169 262 262 277 223 307 162

317 317 327 297 359 233 305 305 312 289 343 226 292 292 297 282 326 219 278 278 282 274 308 211

336 336 336 336 361 283 323 323 323 323 344 276 309 309 309 309 328 268 295 295 295 295 310 261

7500

8000

9000

10000 80

11000 80

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table 19-2 – 89 kW (25 Tons) Gross Cooling Capacity (kW)

Metric

Ambient Temperature – Deg C

29.4

35.0

Entering Wet Bulb Temperature – Deg C

19.4 22.8 16.1 19.4

40.6

46.1

19.4

Ent

16.1

19.4

22.8

16.1

22.8

16.1

22.8

L/s

23.9 80.0 63.0 88.8 51.3 98.5 35.8 76.2 61.0 84.7 49.2 94.1 33.7 72.4 58.6 80.6 47.2 89.4 31.7 68.3 56.6 76.2 45.4 84.7 29.9

3540 26.7 80.6 73.9 89.1 60.7 98.8 46.9 77.1 71.8 85.0 58.6 94.4 45.1 73.3 69.8 80.9 56.3 89.7 43.1 69.5 67.7 76.5 54.2 85.0 41.0

29.4 82.7 82.7 89.4 71.2 99.1 58.0 79.4 79.4 85.3 69.2 94.7 56.0 76.2 76.2 81.2 67.1 90.0 53.9 72.7 72.7 77.1 64.8 85.3 51.9

32.2 87.1 87.1 90.3 82.4 99.4 68.6 83.8 83.8 86.2 80.0 95.0 66.5 80.6 80.6 82.1 78.0 90.3 64.5 77.1 77.1 78.0 75.9 85.9 62.1

23.9 80.9 64.8 90.0 51.0 99.7 36.1 77.1 62.7 85.9 48.9 95.3 34.3 73.3 60.7 81.5 46.9 90.6 32.2 69.2 58.3 77.1 44.8 85.6 30.2

3780 26.7 81.8 76.5 90.3 62.4 99.9 48.1 78.0 74.4 86.2 60.1 95.3 46.0 74.4 72.4 81.8 58.0 90.9 44.0 70.6 70.1 77.4 56.0 85.9 41.9

29.4 84.4 84.4 90.6 73.6 99.9 59.5 81.2 81.2 86.5 71.5 95.6 57.4 78.0 78.0 82.4 69.5 90.9 55.4 74.4 74.4 78.0 67.1 86.2 53.3

32.2 89.1 89.1 91.4 85.3 100.5 70.9 85.9 85.9 87.3 83.2 96.1 68.6 82.4 82.4 83.5 81.2 91.4 66.5 78.8 78.8 79.4 78.8 86.8 64.5

23.9 82.7 68.6 91.7 53.3 101.7 36.9 78.8 66.5 87.3 51.3 97.0 34.9 75.0 64.2 82.9 48.9 92.0 33.1 70.9 61.8 78.6 46.9 87.1 31.1

4250 26.7 83.8 81.5 92.0 65.7 102.0 50.1 80.3 79.4 87.9 63.6 97.3 48.1 76.2 76.2 83.5 61.3 92.3 46.0 72.7 72.7 78.8 59.2 87.6 44.0

29.4 87.6 87.6 92.6 78.3 102.3 62.7 84.4 84.4 88.2 76.2 97.6 61.0 80.9 80.9 84.1 73.9 92.9 58.9 77.1 77.1 79.7 71.8 87.9 56.9

32.2 92.6 92.6 93.8 91.2 102.6 75.0 89.1 89.1 89.7 89.1 97.9 73.0 85.6 85.6 85.3 85.3 93.2 70.6 81.8 81.8 81.8 81.8 88.2 68.6

23.9 84.4 72.1 93.2 55.4 103.2 37.8 80.3 70.1 88.8 53.3 98.5 35.8 76.2 67.7 84.4 51.3 93.5 33.7 72.1 65.4 79.7 48.7 88.2 31.7

4720 26.7 85.6 85.6 93.8 68.9 103.5 51.9 82.1 82.1 89.4 66.8 98.8 49.8 78.6 78.6 84.7 64.5 93.8 47.8 74.7 74.7 80.3 62.1 88.8 45.7

29.4 90.6 90.6 94.4 82.7 103.8 65.7 87.1 87.1 90.0 80.6 99.1 63.3 83.2 83.2 85.6 78.3 94.1 61.8 79.4 79.4 81.2 76.2 89.1 59.2

32.2 95.6 95.6 95.6 95.6 104.3 79.1 92.0 92.0 92.0 92.0 99.7 77.1 88.2 88.2 88.2 88.2 94.7 74.7 84.4 84.4 84.1 84.1 89.7 72.7

23.9 85.6 75.6 94.7 57.4 104.6 38.4 81.8 73.3 90.0 55.4 99.7 36.3 77.4 70.9 85.6 53.3 94.7 34.3 73.3 68.9 80.9 51.3 89.4 32.2

5190 26.7 87.9 87.9 95.0 72.1 104.9 53.9 84.1 84.1 90.6 69.8 99.9 51.9 80.6 80.6 85.9 67.4 95.0 49.5 76.8 76.8 81.2 65.4 90.0 47.5

29.4 92.9 92.9 95.8 87.1 105.2 68.3 89.4 89.4 91.4 84.7 100.5 66.2 85.6 85.6 87.1 82.7 95.6 64.2 81.5 81.5 82.7 80.3 90.3 61.8

32.2 98.5 98.5 98.5 98.5 105.8 82.9 94.7 94.7 94.7 94.7 100.8 80.9 90.6 90.6 90.6 90.6 96.1 78.6 86.5 86.5 86.5 86.5 90.9 76.5

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Performance

Data

Table 20-1 – 29 Ton Gross Cooling Capacities (MBh)

English

Ambient Temperature – Deg F

Entering Wet Bulb Temperature – Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

322 264 356 207 394 143 307 256 340 200 376 135 292 248 324 192 358 128 276 239 306 184 339 120

327 324 357 262 395 202 313 313 341 255 378 195 299 299 325 246 359 187 285 285 308 238 341 179

347 347 360 320 396 260 334 334 345 312 379 252 321 321 329 304 360 244 306 306 312 296 342 236

369 369 369 369 398 317 356 356 356 356 381 309 342 342 342 342 363 301 327 327 327 327 345 292

323 268 358 207 396 143 309 260 342 200 378 136 294 252 325 192 360 128 277 243 307 187 341 121

330 330 359 266 397 204 315 315 343 258 379 197 302 302 326 250 361 189 288 288 309 242 342 181

350 350 362 325 398 263 337 337 347 318 380 255 324 324 331 310 362 247 309 309 314 301 343 239

373 373 373 373 400 322 359 359 359 359 383 314 345 345 345 345 365 306 330 330 330 330 346 297

330 283 364 216 402 146 315 275 347 208 384 139 299 266 330 201 365 131 283 258 312 192 345 123

339 339 365 280 403 213 326 326 349 272 385 205 312 312 332 264 366 198 297 297 314 256 347 190

362 362 370 346 405 277 348 348 354 338 387 269 334 334 338 330 368 261 319 319 319 319 349 253

386 386 386 386 408 342 372 372 372 372 390 334 357 357 357 357 371 325 341 341 341 341 352 317

335 297 369 225 407 149 320 289 352 217 388 141 304 281 335 209 369 134 287 272 316 201 349 126

348 348 371 294 409 222 335 335 354 286 390 214 320 320 337 278 371 206 305 305 319 269 351 198

372 372 377 366 410 291 358 358 361 358 392 283 344 344 343 343 373 275 328 328 328 328 353 266

398 398 397 397 414 361 383 383 383 383 396 353 367 367 367 367 377 345 351 351 351 351 358 336

340 311 373 233 411 151 325 303 356 225 392 144 309 295 338 217 373 136 292 286 320 209 353 129

357 357 376 308 413 230 343 343 359 300 395 222 328 328 341 291 375 214 312 312 323 283 355 206

382 382 382 382 415 304 367 367 367 367 397 296 352 352 352 352 377 288 336 336 336 336 357 279

408 408 408 408 420 380 393 393 393 393 402 372 376 376 376 376 383 364 360 360 360 360 363 356

8750

9000

10000 81

11000 81

12000 81

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table 20-2 – 105 kW (29 Ton) Gross Cooling Capacity (kW)

Metric

Ambient Temperature – Deg C

29.4

35.0

Entering Wet Bulb Temperature – Deg C

19.4 22.8 16.1 19.4

40.6

46.1

19.4

Ent

16.1

19.4

22.8

16.1

22.8

16.1

22.8

L/s

23.9 94.4 77.4 104.3 60.7 115.5 41.9 90.0 75.0 99.7 58.6 110.2 39.6 85.6 72.7 95.0 56.3 104.9 37.5 80.9 70.1 89.7 53.9 99.4 35.2

4130 27.2 95.8 95.0 104.6 76.8 115.8 59.2 91.7 91.7 99.9 74.7 110.8 57.2 87.6 87.6 95.3 72.1 105.2 54.8 83.5 83.5 90.3 69.8 99.9 52.5

30.6 101.7 101.7 105.5 93.8 116.1 76.2 97.9 97.9 101.1 91.4 111.1 73.9 94.1 94.1 96.4 89.1 105.5 71.5 89.7 89.7 91.4 86.8 100.2 69.2

33.9 108.2 108.2 108.2 108.2 116.7 92.9 104.3 104.3 104.3 104.3 111.7 90.6 100.2 100.2 100.2 100.2 106.4 88.2 95.8 95.8 95.8 95.8 101.1 85.6

23.9 94.7 78.6 104.9 60.7 116.1 41.9 90.6 76.2 100.2 58.6 110.8 39.9 86.2 73.9 95.3 56.3 105.5 37.5 81.2 71.2 90.0 54.8 99.9 35.5

4250 27.2 96.7 96.7 105.2 78.0 116.4 59.8 92.3 92.3 100.5 75.6 111.1 57.7 88.5 88.5 95.6 73.3 105.8 55.4 84.4 84.4 90.6 70.9 100.2 53.1

30.6 102.6 102.6 106.1 95.3 116.7 77.1 98.8 98.8 101.7 93.2 111.4 74.7 95.0 95.0 97.0 90.9 106.1 72.4 90.6 90.6 92.0 88.2 100.5 70.1

33.9 109.3 109.3 109.3 109.3 117.2 94.4 105.2 105.2 105.2 105.2 112.3 92.0 101.1 101.1 101.1 101.1 107.0 89.7 96.7 96.7 96.7 96.7 101.4 87.1

23.9 96.7 82.9 106.7 63.3 117.8 42.8 92.3 80.6 101.7 61.0 112.6 40.7 87.6 78.0 96.7 58.9 107.0 38.4 82.9 75.6 91.4 56.3 101.1 36.1

4720 27.2 99.4 99.4 107.0 82.1 118.1 62.4 95.6 95.6 102.3 79.7 112.8 60.1 91.4 91.4 97.3 77.4 107.3 58.0 87.1 87.1 92.0 75.0 101.7 55.7

30.6 106.1 106.1 108.4 101.4 118.7 81.2 102.0 102.0 103.8 99.1 113.4 78.8 97.9 97.9 99.1 96.7 107.9 76.5 93.5 93.5 93.5 93.5 102.3 74.2

33.9 113.1 113.1 113.1 113.1 119.6 100.2 109.0 109.0 109.0 109.0 114.3 97.9 104.6 104.6 104.6 104.6 108.7 95.3 99.9 99.9 99.9 99.9 103.2 92.9

23.9 98.2 87.1 108.2 65.9 119.3 43.7 93.8 84.7 103.2 63.6 113.7 41.3 89.1 82.4 98.2 61.3 108.2 39.3 84.1 79.7 92.6 58.9 102.3 36.9

5190 27.2 102.0 102.0 108.7 86.2 119.9 65.1 98.2 98.2 103.8 83.8 114.3 62.7 93.8 93.8 98.8 81.5 108.7 60.4 89.4 89.4 93.5 78.8 102.9 58.0

30.6 109.0 109.0 110.5 107.3 120.2 85.3 104.9 104.9 105.8 104.9 114.9 82.9 100.8 100.8 100.5 100.5 109.3 80.6 96.1 96.1 96.1 96.1 103.5 78.0

33.9 116.7 116.7 116.4 116.4 121.3 105.8 112.3 112.3 112.3 112.3 116.1 103.5 107.6 107.6 107.6 107.6 110.5 101.1 102.9 102.9 102.9 102.9 104.9 98.5

23.9 99.7 91.2 109.3 68.3 120.5 44.3 95.3 88.8 104.3 65.9 114.9 42.2 90.6 86.5 99.1 63.6 109.3 39.9 85.6 83.8 93.8 61.3 103.5 37.8

5660 27.2 104.6 104.6 110.2 90.3 121.1 67.4 100.5 100.5 105.2 87.9 115.8 65.1 96.1 96.1 99.9 85.3 109.9 62.7 91.4 91.4 94.7 82.9 104.1 60.4

30.6 112.0 112.0 112.0 112.0 121.6 89.1 107.6 107.6 107.6 107.6 116.4 86.8 103.2 103.2 103.2 103.2 110.5 84.4 98.5 98.5 98.5 98.5 104.6 81.8

33.9 119.6 119.6 119.6 119.6 123.1 111.4 115.2 115.2 115.2 115.2 117.8 109.0 110.2 110.2 110.2 110.2 112.3 106.7 105.5 105.5 105.5 105.5 106.4 104.3

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Performance

Data

Table 21-1 – 33 Ton Gross Cooling Capacities (MBh)

English

Ambient Temperature – Deg F

Entering Wet Bulb Temperature – Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

365 283 407 231 453 161 347 273 387 221 431 151 328 261 367 211 409 141 309 250 346 200 386 131

368 333 408 274 454 213 350 322 389 263 432 203 332 311 368 252 410 192 313 300 348 241 388 181

377 377 410 322 455 263 360 360 390 311 433 252 344 344 370 300 411 241 328 328 350 289 389 230

397 397 413 371 457 311 381 381 394 361 435 300 365 365 375 350 414 289 347 347 355 338 391 278

372 296 414 233 461 164 354 285 394 222 439 154 334 274 373 211 416 144 315 263 351 200 392 134

376 351 416 286 462 220 358 340 396 275 440 210 334 334 375 263 417 199 318 318 354 252 394 188

388 388 418 338 463 274 372 372 398 327 441 263 356 356 377 316 418 252 338 338 356 304 395 240

411 411 422 392 465 326 394 394 403 381 443 315 377 377 377 377 421 303 359 359 359 359 398 292

378 309 421 241 467 167 359 298 399 230 445 157 340 286 378 218 421 147 320 275 356 207 397 136

384 367 423 297 468 227 361 361 402 286 446 216 344 344 381 274 423 205 328 326 359 263 399 194

400 400 425 354 470 284 383 383 405 342 448 273 366 366 384 331 425 262 348 348 362 320 401 250

423 423 431 412 472 340 406 406 405 405 450 329 388 388 388 388 427 317 370 370 371 368 403 306

384 321 426 248 473 170 365 310 405 237 450 160 345 298 383 225 426 149 325 286 361 214 402 138

386 386 429 308 474 233 370 370 408 297 452 223 354 352 386 285 428 212 335 335 364 273 404 201

410 410 431 368 476 294 393 393 411 357 453 283 375 375 389 346 430 271 357 357 368 334 406 260

434 434 433 433 478 354 416 416 416 416 456 342 398 398 399 398 432 331 379 379 379 379 408 319

392 339 434 275 481 175 372 328 412 264 457 164 352 316 390 253 433 153 331 304 367 241 408 144

402 400 437 325 482 243 382 382 415 313 459 232 364 364 393 302 435 221 346 346 370 290 409 210

424 424 440 392 484 309 406 406 419 380 461 298 388 388 398 369 437 286 369 369 375 357 412 275

449 449 451 450 487 375 431 431 431 431 463 363 412 412 411 411 440 352 392 392 392 392 415 340

10000 80

11000 80

12000 80

13000 80

14600 80

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table 21-2 – 120 kW (33 Ton) Gross Cooling Capacity (kW)

Metric

Ambient Temperature – Deg C

29.4

35.0

Entering Wet Bulb Temperature – Deg C

19.4 22.8 16.1 19.4

40.6

46.1

19.4

Ent

16.1

19.4

22.8

16.1

22.8

16.1

22.8

L/s

23.9 107.0 82.9 119.3 67.7 132.8 47.2 101.7 80.0 113.4 64.8 126.3 44.3 96.1 76.5 107.6 61.8 119.9 41.3 90.6 73.3 101.4 58.6 113.1 38.4

4720 26.7 107.9 97.6 119.6 80.3 133.1 62.4 102.6 94.4 114.0 77.1 126.6 59.5 97.3 91.2 107.9 73.9 120.2 56.3 91.7 87.9 102.0 70.6 113.7 53.1

29.4 110.5 110.5 120.2 94.4 133.4 77.1 105.5 105.5 114.3 91.2 126.9 73.9 100.8 100.8 108.4 87.9 120.5 70.6 96.1 96.1 102.6 84.7 114.0 67.4

32.2 116.4 116.4 121.1 108.7 133.9 91.2 111.7 111.7 115.5 105.8 127.5 87.9 107.0 107.0 109.9 102.6 121.3 84.7 101.7 101.7 104.1 99.1 114.6 81.5

23.9 109.0 86.8 121.3 68.3 135.1 48.1 103.8 83.5 115.5 65.1 128.7 45.1 97.9 80.3 109.3 61.8 121.9 42.2 92.3 77.1 102.9 58.6 114.9 39.3

5190 26.7 110.2 102.9 121.9 83.8 135.4 64.5 104.9 99.7 116.1 80.6 129.0 61.6 97.9 97.9 109.9 77.1 122.2 58.3 93.2 93.2 103.8 73.9 115.5 55.1

29.4 113.7 113.7 122.5 99.1 135.7 80.3 109.0 109.0 116.7 95.8 129.3 77.1 104.3 104.3 110.5 92.6 122.5 73.9 99.1 99.1 104.3 89.1 115.8 70.3

32.2 120.5 120.5 123.7 114.9 136.3 95.6 115.5 115.5 118.1 111.7 129.8 92.3 110.5 110.5 110.5 110.5 123.4 88.8 105.2 105.2 105.2 105.2 116.7 85.6

23.9 110.8 90.6 123.4 70.6 136.9 48.9 105.2 87.3 116.9 67.4 130.4 46.0 99.7 83.8 110.8 63.9 123.4 43.1 93.8 80.6 104.3 60.7 116.4 39.9

5660 26.7 112.6 107.6 124.0 87.1 137.2 66.5 105.8 105.8 117.8 83.8 130.7 63.3 100.8 100.8 111.7 80.3 124.0 60.1 96.1 95.6 105.2 77.1 116.9 56.9

29.4 117.2 117.2 124.6 103.8 137.8 83.2 112.3 112.3 118.7 100.2 131.3 80.0 107.3 107.3 112.6 97.0 124.6 76.8 102.0 102.0 106.1 93.8 117.5 73.3

32.2 124.0 124.0 126.3 120.8 138.3 99.7 119.0 119.0 118.7 118.7 131.9 96.4 113.7 113.7 113.7 113.7 125.2 92.9 108.4 108.4 108.7 107.9 118.1 89.7

23.9 112.6 94.1 124.9 72.7 138.6 49.8 107.0 90.9 118.7 69.5 131.9 46.9 101.1 87.3 112.3 65.9 124.9 43.7 95.3 83.8 105.8 62.7 117.8 40.4

6140 26.7 113.1 113.1 125.7 90.3 138.9 68.3 108.4 108.4 119.6 87.1 132.5 65.4 103.8 103.2 113.1 83.5 125.4 62.1 98.2 98.2 106.7 80.0 118.4 58.9

29.4 120.2 120.2 126.3 107.9 139.5 86.2 115.2 115.2 120.5 104.6 132.8 82.9 109.9 109.9 114.0 101.4 126.0 79.4 104.6 104.6 107.9 97.9 119.0 76.2

32.2 127.2 127.2 126.9 126.9 140.1 103.8 121.9 121.9 121.9 121.9 133.7 100.2 116.7 116.7 116.9 116.7 126.6 97.0 111.1 111.1 111.1 111.1 119.6 93.5

23.9 114.9 99.4 127.2 80.6 141.0 51.3 109.0 96.1 120.8 77.4 133.9 48.1 103.2 92.6 114.3 74.2 126.9 44.8 97.0 89.1 107.6 70.6 119.6 42.2

6890 26.7 117.8 117.2 128.1 95.3 141.3 71.2 112.0 112.0 121.6 91.7 134.5 68.0 106.7 106.7 115.2 88.5 127.5 64.8 101.4 101.4 108.4 85.0 119.9 61.6

29.4 124.3 124.3 129.0 114.9 141.9 90.6 119.0 119.0 122.8 111.4 135.1 87.3 113.7 113.7 116.7 108.2 128.1 83.8 108.2 108.2 109.9 104.6 120.8 80.6

32.2 131.6 131.6 132.2 131.9 142.7 109.9 126.3 126.3 126.3 126.3 135.7 106.4 120.8 120.8 120.5 120.5 129.0 103.2 114.9 114.9 114.9 114.9 121.6 99.7

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Performance

Data

Table 22-1 – 42 Ton Gross Cooling Capacities (MBh)

English

Ambient Temperature – Deg F

Entering Wet Bulb Temperature – Deg F

67 73 61 67

105

115

Ent

CFM (F) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

455 365 505 292 559 200 433 353 481 277 533 188 411 340 456 260 505 176 387 326 430 247 477 164

461 433 506 351 560 268 440 420 482 338 534 256 418 407 458 325 507 243 394 394 432 312 479 231

476 476 509 416 561 334 457 457 486 403 536 322 437 437 461 390 508 309 416 416 435 377 480 296

502 502 515 482 563 398 483 483 492 470 537 386 462 462 468 457 510 373 440 440 440 440 482 360

462 379 512 293 566 203 440 367 487 281 539 191 417 353 462 268 511 179 392 340 435 255 482 167

469 451 513 363 567 275 448 439 489 350 540 263 422 422 464 337 513 250 401 401 437 324 484 238

488 488 516 433 569 346 469 469 493 420 542 333 448 448 468 407 514 321 426 426 442 394 486 308

515 515 524 504 570 414 495 495 501 492 544 402 474 474 473 473 516 389 451 451 451 451 488 375

468 393 517 301 572 205 446 380 493 289 545 194 422 367 467 276 516 182 398 353 440 263 487 169

477 470 519 375 573 282 452 452 494 362 546 270 431 431 469 349 518 257 410 410 442 336 489 244

499 499 523 450 575 357 479 479 499 437 548 345 458 458 474 424 519 331 435 435 447 410 490 318

527 527 532 526 577 430 506 506 506 506 550 417 484 484 484 484 522 404 461 461 461 461 493 390

474 406 523 309 577 208 451 393 498 297 550 196 427 380 471 284 521 184 402 366 444 271 491 171

481 481 524 387 579 289 461 461 499 374 551 276 440 440 473 361 522 264 417 417 446 347 493 251

509 509 529 466 580 368 488 488 505 453 552 355 467 467 479 440 524 342 444 444 453 426 494 328

537 537 537 537 583 445 516 516 516 516 556 432 494 494 493 493 527 419 470 470 470 470 498 405

479 419 527 317 582 211 456 406 502 304 554 199 432 393 475 292 525 186 407 379 447 277 494 174

489 489 529 399 583 295 469 469 504 386 556 283 447 447 478 373 527 270 425 425 450 359 496 258

518 518 535 482 585 378 497 497 510 469 557 365 475 475 485 456 528 352 451 451 458 442 498 339

547 547 547 547 588 460 525 525 525 525 561 447 502 502 502 502 532 434 478 478 478 478 503 420

12500 80

13500 80

14500 80

15500 80

16500 80

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

Table 22-2 – 148 kW (42 Ton) Gross Cooling Capacity (kW)

Metric

Ambient Temperature – Deg C

29.4

35.0

Entering Wet Bulb Temperature – Deg C

19.4 22.8 16.1 19.4

40.6

46.1

19.4

Ent

16.1

19.4

22.8

16.1

22.8

16.1

22.8

L/s

23.9 133.4 107.0 148.0 85.6 163.8 58.6 126.9 103.5 141.0 81.2 156.2 55.1 120.5 99.7 133.7 76.2 148.0 51.6 113.4 95.6 126.0 72.4 139.8 48.1

5900 26.7 135.1 126.9 148.3 102.9 164.1 78.6 129.0 123.1 141.3 99.1 156.5 75.0 122.5 119.3 134.2 95.3 148.6 71.2 115.5 115.5 126.6 91.4 140.4 67.7

29.4 139.5 139.5 149.2 121.9 164.4 97.9 133.9 133.9 142.4 118.1 157.1 94.4 128.1 128.1 135.1 114.3 148.9 90.6 121.9 121.9 127.5 110.5 140.7 86.8

32.2 147.1 147.1 150.9 141.3 165.0 116.7 141.6 141.6 144.2 137.8 157.4 113.1 135.4 135.4 137.2 133.9 149.5 109.3 129.0 129.0 129.0 129.0 141.3 105.5

23.9 135.4 111.1 150.1 85.9 165.9 59.5 129.0 107.6 142.7 82.4 158.0 56.0 122.2 103.5 135.4 78.6 149.8 52.5 114.9 99.7 127.5 74.7 141.3 48.9

6370 26.7 137.5 132.2 150.4 106.4 166.2 80.6 131.3 128.7 143.3 102.6 158.3 77.1 123.7 123.7 136.0 98.8 150.4 73.3 117.5 117.5 128.1 95.0 141.9 69.8

29.4 143.0 143.0 151.2 126.9 166.8 101.4 137.5 137.5 144.5 123.1 158.9 97.6 131.3 131.3 137.2 119.3 150.7 94.1 124.9 124.9 129.6 115.5 142.4 90.3

32.2 150.9 150.9 153.6 147.7 167.1 121.3 145.1 145.1 146.8 144.2 159.4 117.8 138.9 138.9 138.6 138.6 151.2 114.0 132.2 132.2 132.2 132.2 143.0 109.9

23.9 137.2 115.2 151.5 88.2 167.7 60.1 130.7 111.4 144.5 84.7 159.7 56.9 123.7 107.6 136.9 80.9 151.2 53.3 116.7 103.5 129.0 77.1 142.7 49.5

6840 26.7 139.8 137.8 152.1 109.9 167.9 82.7 132.5 132.5 144.8 106.1 160.0 79.1 126.3 126.3 137.5 102.3 151.8 75.3 120.2 120.2 129.6 98.5 143.3 71.5

29.4 146.3 146.3 153.3 131.9 168.5 104.6 140.4 140.4 146.3 128.1 160.6 101.1 134.2 134.2 138.9 124.3 152.1 97.0 127.5 127.5 131.0 120.2 143.6 93.2

32.2 154.5 154.5 155.9 154.2 169.1 126.0 148.3 148.3 148.3 148.3 161.2 122.2 141.9 141.9 141.9 141.9 153.0 118.4 135.1 135.1 135.1 135.1 144.5 114.3

23.9 138.9 119.0 153.3 90.6 169.1 61.0 132.2 115.2 146.0 87.1 161.2 57.4 125.2 111.4 138.1 83.2 152.7 53.9 117.8 107.3 130.1 79.4 143.9 50.1

7320 26.7 141.0 141.0 153.6 113.4 169.7 84.7 135.1 135.1 146.3 109.6 161.5 80.9 129.0 129.0 138.6 105.8 153.0 77.4 122.2 122.2 130.7 101.7 144.5 73.6

29.4 149.2 149.2 155.0 136.6 170.0 107.9 143.0 143.0 148.0 132.8 161.8 104.1 136.9 136.9 140.4 129.0 153.6 100.2 130.1 130.1 132.8 124.9 144.8 96.1

32.2 157.4 157.4 157.4 157.4 170.9 130.4 151.2 151.2 151.2 151.2 163.0 126.6 144.8 144.8 144.5 144.5 154.5 122.8 137.8 137.8 137.8 137.8 146.0 118.7

23.9 140.4 122.8 154.5 92.9 170.6 61.8 133.7 119.0 147.1 89.1 162.4 58.3 126.6 115.2 139.2 85.6 153.9 54.5 119.3 111.1 131.0 81.2 144.8 51.0

7790 26.7 143.3 143.3 155.0 116.9 170.9 86.5 137.5 137.5 147.7 113.1 163.0 82.9 131.0 131.0 140.1 109.3 154.5 79.1 124.6 124.6 131.9 105.2 145.4 75.6

29.4 151.8 151.8 156.8 141.3 171.5 110.8 145.7 145.7 149.5 137.5 163.3 107.0 139.2 139.2 142.2 133.7 154.8 103.2 132.2 132.2 134.2 129.6 146.0 99.4

32.2 160.3 160.3 160.3 160.3 172.3 134.8 153.9 153.9 153.9 153.9 164.4 131.0 147.1 147.1 147.1 147.1 155.9 127.2 140.1 140.1 140.1 140.1 147.4 123.1

Notes:

1. All capacities shown are gross and have not considered indoor fan heat. To obtain net cooling, subtract indoor fan heat.

2. TGC = Total gross capacity.

3. SHC = Sensible heat capacity.

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Performance

Data

Table 23-1 – Electric Heat Air Temperature Rise (Degrees F)

English

Heater

Total

CFM

Input (kW) MBh 7000 8000 9000 10000 11000 12000 13000 14000 15000 16000 17000

26.9

40.4

53.8

67.3

80.7

138

184

230

276

12.1 10.6

9.4

8.5

12.7

16.9

21.2

25.4

7.7

11.6

15.4

19.2

23.1

7.1

10.6

14.1

17.6

21.2

–

9.8

13.0

16.3

19.5

–

9.1

12.1

15.1

18.1

–

8.5

11.3

14.1

16.9

–

7.9

10.6 10.0

13.2 12.5

15.9 14.9

–

7.5

18.2 15.9 14.1

24.2 21.2 18.8

30.2 26.5 23.5

–

Notes:

1. Air temperature rise = (kW x 3413)/(scfm x 1.085).

2. All heaters on constant volume units provide 2 increments of capacity.

3. Air temperature rise in this table are based on heater operating at 415 volts.

Table 23-2 – Electric Heat Air Temperature Rise (Degrees Celsius)

Metric

Heater

L/s

Input (kW) 3300

3780

5.9

8.9

11.9

14.8

—

4250

5.3

7.9

10.5

13.2

—

4720

4.7

7.1

9.5

11.9

14.2

5190 5660

6140 6610

7080

—

4.8

6.3

7.9

9.5

7550

—

4.5

5.9

7.4

8.9

8020

—

4.2

5.6

7.0

8.4

26.9

40.4

53.8

67.3

80.7

6.8

10.2

13.6

17.0

—

4.3

6.5

4.0

5.9

—

5.5

—

5.1

8.6

7.9

7.3

6.8

10.8

13.0

9.9

11.9

9.1

11.0

8.5

10.2

Notes:

1. Air temperature rise in this table are based on heater operating at 415 volts.

2. All heaters on constant volume units provide 2 increments of capacity.

Table 23-3 – Available Electric Heat KW

Ranges

Nominal

Unit Size

Tons

Nominal Voltage (v)

380

415

22.9

25.0

29.2

33.3

23-56

34-68

27-67

40-81

42.7

Notes:

1. KW ranges in this table are based on heater

operating at nominal voltages 380 or 415.

Table 23-4 – Natural Gas Heating Capacities

Heat Input MBh (KW)

(See Note 1)

Heating Output MBh (KW) Air Temp. Rise,

Tons

Unit Model No.

YCD/YCH275**L

YCD/YCH300**L

YCD/YCH350**L

YCD/YCH275**H

YCD/YCH300**H

YCD/YCH350**H

YCD/YCH400**L

YCD/YCH500**L

YCD/YCH400**H

YCD/YCH500**H

(See Note 1)

F (C)

22.9-29.2

290,000 (85)

500,000 (147)

243,000 (69)

10-40 (-12.2 , 4.4)

22.9-29.2

33.3-42.7

405,000 (119)

25-55 (-3.9 , 12.8)

335,000 (98)

670,000 (196)

271,350 (80)

542,700 (159)

5-35 (-15 , 1.6)

20-50 (-6.7 , 10)

33.3-42.7

Note:

1. Total heating capacity.

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Performance

Data

Table 24-1 – Supply Fan Performance – 23-29 Ton

English

Static Pressure (in. wg)

0.25

RPM

0.50

RPM BHP

0.75

RPM BHP

1.00

RPM BHP

1.25

RPM

1.50

BHP RPM

1.75

2.00

2.25

SCFM

6670.

7085.

7500.

7915.

8330.

8745.

9160.

9575.

9990.

10405.

10820.

11235.

11650.

12065.

BHP

0.92

1.05

1.20

1.36

1.53

1.72

1.92

2.14

2.38

2.65

2.94

3.25

3.59

3.94

BHP

3.46

3.65

3.85

4.06

4.29

4.53

4.78

5.05

5.35

5.68

6.04

6.43

6.87

7.35

RPM BHP RPM

BHP

4.71

4.96

5.21

5.46

5.72

5.99

6.27

6.57

6.89

7.22

7.57

7.95

8.36

8.80

RPM

720.

722.

724.

726.

727.

729.

731.

733.

735.

738.

741.

744.

748.

753.

BHP

5.36

5.63

5.91

6.18

6.47

6.76

7.06

7.37

7.70

8.05

8.42

8.80

9.21

9.64

307.

317.

328.

339.

350.

361.

372.

384.

395.

407.

419.

432.

444.

457.

371.

380.

390.

399.

408.

417.

427.

437.

448.

459.

470.

481.

492.

503.

1.30

1.46

1.63

1.81

2.00

2.21

2.44

2.68

2.95

3.24

3.54

3.87

4.21

4.57

431.

436.

442.

449.

458.

467.

477.

486.

495.

504.

514.

524.

534.

544.

1.75

1.90

2.07

2.26

2.48

2.72

2.98

3.24

3.52

3.82

4.14

4.49

4.86

5.26

490.

493.

496.

500.

505.

511.

519.

528.

537.

547.

556.

565.

574.

583.

2.29

2.44

2.61

2.80

3.00

3.23

3.49

3.79

4.11

4.45

4.79

5.15

5.53

5.93

544.

546.

548.

551.

554.

558.

563.

569.

575.

583.

593.

602.

612.

621.

2.86

3.03

3.21

3.41

3.62

3.85

4.10

4.37

4.68

5.02

5.40

5.81

6.23

6.67

593.

639.

640.

642.

644.

646.

648.

651.

654.

657.

661.

666.

671.

678.

685.

4.08

4.30

4.52

4.75

4.99

5.24

5.51

5.80

6.10

6.42

6.77

7.15

7.57

8.02

681.

683.

684.

686.

687.

689.

691.

694.

697.

700.

704.

708.

713.

719.

595.

597.

599.

601.

604.

608.

611.

616.

622.

628.

636.

645.

654.

Notes:

1. Fan performance table includes internal resistances of cabinet, wet coil and 2” (50 mm) standard filters. For other components refer to component pressure

drop table.

2. The pressure drops from the supply fan to the space should not exceed 2.25” positive.

3. Maximum air flow for 23 ton unit is 10080 CFM, 25 ton is 11000 CFM, 29 ton is 12000 CFM.

4. Maximum motor HP 23 ton unit is 10 HP, 25 ton is 10 HP, 29 ton unit is 15 HP.

Table 24-2 – Supply Fan Performance – 82-105 KW

Metric

Static Pressure (Pascals)

310.4

62.9

RPM

124.1

RPM (kW)

186.2

RPM (kW)

248.3

RPM (kW)

372.5

434.6

RPM (kW) RPM

496.7

558.8

RPM

(L/s)

(kW)

0.68

0.78

0.89

1.01

1.14

1.28

1.43

1.59

1.77

1.97

2.19

2.42

2.67

2.94

RPM

544.

546.

548.

551.

554.

558.

563.

569.

575.

583.

593.

602.

612.

621.

(kW) RPM

(kW)

2.58

2.72

2.87

3.03

3.20

3.38

3.57

3.77

3.99

4.23

4.50

4.79

5.13

5.48

(kW)

3.51

3.70

3.88

4.07

4.26

4.46

4.68

4.90

5.13

5.39

5.65

5.93

6.23

6.56

(kW)

4.00

4.20

4.40

4.61

4.82

5.04

5.26

5.50

5.74

6.00

6.28

6.56

6.87

7.19

3148.

3344.

3539.

3735.

3931.

4127.

4323.

4519.

4715.

4910.

5106.

5302.

5498.

5694.

307.

317.

328.

339.

350.

361.

372.

384.

395.

407.

419.

432.

444.

457.

371.

380.

390.

399.

408.

417.

427.

437.

448.

459.

470.

481.

492.

503.

0.97

1.09

1.22

1.35

1.49

1.64

1.82

2.00

2.20

2.41

2.64

2.88

3.14

3.41

431.

436.

442.

449.

458.

467.

477.

486.

495.

504.

514.

524.

534.

544.

1.31

1.42

1.54

1.68

1.85

2.03

2.22

2.42

2.63

2.85

3.09

3.35

3.62

3.92

490.

493.

496.

500.

505.

511.

519.

528.

537.

547.

556.

565.

574.

583.

1.70

1.82

1.95

2.09

2.24

2.41

2.60

2.82

3.06

3.32

3.58

3.84

4.12

4.42

2.13

2.26

2.40

2.54

2.70

2.87

3.06

3.26

3.49

3.74

4.03

4.33

4.65

4.97

593.

639.

640.

642.

644.

646.

648.

651.

654.

657.

661.

666.

671.

678.

685.

3.04

3.20

3.37

3.54

3.72

3.91

4.11

4.32

4.55

4.79

5.05

5.33

5.64

5.98

681.

683.

684.

686.

687.

689.

691.

694.

697.

700.

704.

708.

713.

719.

720.

722.

724.

726.

727.

729.

731.

733.

735.

738.

741.

744.

748.

753.

595.

597.

599.

601.

604.

608.

611.

616.

622.

628.

636.

645.

654.

Notes:

1. Fan performance table includes internal resistances of cabinet, wet coil and 2” (50 mm) standard filters. For other components refer to component pressure

drop table.

2. The pressure drops from the supply fan to the space should not exceed 2.25” (558.8 Pa) positive.

3. Maximum air flow 23 ton (80 kW) is 4756 L/s, 25 ton is 5190 l/s, 29 ton is 5663 L/s

4. Maximum motor kW for 23 ton unit is 7.5 (10 hp), 25 ton is 7.5 kW (10 HP), 29 ton is 11.2 kW (15 hp).

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Performance

Data

Figure 25-1

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Performance

Data

Table 26-1 – Supply Fan Performance – 33 and 42 Ton

English

Static Pressure (in. wg)

1.25 1.50

0.25

0.50

0.75

1.00

1.75

2.00

2.25

2.50

SCFM RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

9996.

309.

1.80

2.19

2.64

3.15

3.72

4.37

5.09

5.89

6.79

360.

374.

388.

403.

420.

437.

454.

472.

490.

2.34

2.76

3.24

3.79

4.41

5.11

5.87

6.72

7.65

404.

416.

430.

445.

459.

473.

488.

504.

521.

2.88

3.35

3.88

4.48

5.12

5.84

6.64

7.53

8.51

447.

458.

468.

480.

494.

509.

524.

537.

551.

3.48

3.97

4.53

5.15

5.85

6.63

7.47

8.37

9.36

487.

496.

506.

517.

527.

539.

554.

569.

4.10

4.62

5.21

5.86

6.58

7.39

8.28

9.26

525.

532.

541.

551.

562.

572.

583.

4.75 562.

5.30 567.

5.92 574.

6.60 583.

7.35 593.

8.18 604.

9.10 614.

5.41 597.

6.01 602.

6.65 607.

7.37 614.

8.15 623.

9.01 633.

6.07

6.72

7.41

8.16

8.97

9.86

630.

634.

639.

645.

652.

6.75 662. 7.47

7.44 666. 8.16

8.18 670. 8.95

8.97 675. 9.78

9.81 681. 10.68

10829. 326.

11662. 344.

12495. 362.

13328. 381.

14161. 399.

14994. 418.

15827. 437.

16660. 457.

661. 10.73 688. 11.62

671. 11.73 698. 12.65

681. 12.81 708. 13.77

692. 13.99 718. 14.97

9.95 643. 10.83

596. 10.11 625. 10.98

611. 11.21 637. 12.11

654. 11.88

664. 13.04

584. 10.31

Notes:

1. Fan performance table includes internal resistances of cabinet, wet coil and 2” (50 mm) standard filters. For other components refer to component static

pressure drop table to arrive at available external static pressure.

2. The pressure drops from the supply fan to the space should not exceed 2.5” Wg (620.9 Pa) positive.

3. Max CFM for 33 ton unit - 14660, 42 ton - 16660.

4. Max motor HP for 33 ton unit-(15 HP), 42 ton (20 HP).

Table 26-2 – Supply Fan Performance – 105-148 KW

Metric

Static Pressure (Pascals)

310.4 372.5

RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

62.1

124,2

186.3

248.1

434.6

496.7

558.8

620.9

(L/s)

4717.

5111.

5504.

5897.

6290.

6683.

7076.

7469.

7862.

309.

326.

344.

362.

381.

399.

418.

437.

457.

1.34

1.63

1.97

2.35

2.77

3.26

3.80

4.40

5.06

360.

374.

388.

403.

420.

437.

454.

472.

490.

1.74

2.06

2.41

2.82

3.29

3.81

4.38

5.01

5.71

404.

416.

430.

445.

459.

473.

488.

504.

521.

2.15

2.50

2.90

3.34

3.82

4.35

4.95

5.62

6.35

447.

458.

468.

480.

494.

509.

524.

537.

551.

2.59

2.96

3.37

3.84

4.37

4.95

5.57

6.24

6.98

487.

496.

506.

517.

527.

539.

554.

569.

584.

3.06

3.45

3.88

4.37

4.91

5.51

6.18

6.91

7.68

525.

532.

541.

551.

562.

572.

583.

596.

611.

3.54

3.96

4.41

4.92

5.48

6.10

6.79

7.54

8.36

562.

567.

574.

583.

593.

604.

614.

625.

637.

4.03

4.48

4.96

5.49

6.08

6.72

7.42

8.19

9.03

597.

602.

607.

614.

623.

633.

643.

654.

664.

4.53

5.01

5.53

6.08

6.69

7.35

8.07

8.86

9.72

630. 5.03 662. 5.57

634. 5.54 666. 6.09

639. 6.10 670. 6.67

645. 6.69 675. 7.30

652. 7.32 681. 7.96

661. 8.00 688. 8.67

671. 8.75 698. 9.44

681. 9.55 708. 10.27

692. 10.43 718. 11.17

Notes:

1. Fan performance table includes internal resistances of cabinet, wet coil and 2” (50 mm) standard filters. For other components refer to component static

pressure drop table to arrive at available external static pressure.

2. The pressure drops from the supply fan to the space should not exceed 2.5” Wg (620.9 Pa) positive.

3. Max CFM for 33 ton unit 6825 L/s, 42 ton -7860 L/s

4. Max motor HP for 33 ton unit-11.2 kW (15 HP), 42 ton 14.9 kW (20 HP)

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Performance

Data

Figure 27-1

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Performance

Data

Table 28-1 – Component Static Pressure Drops (in wg) 50 Hz English

Heating System

Filters

Nominal

Std.Tons (kW)

CFM

Std Air

6670

7500

8330

9170

10000

7500

8330

9170

Gas Heat

Electric Heat

1 Element

ID Coil

Adder

0.09

0.10

0.13

0.15

High Eff. Filters

Inlet Guide

Vanes

0.04

0.06

0.07

0.08

0.10

0.06

0.07

0.08

0.12

0.08

0.11

0.13

0.15

0.03

0.04

0.05

0.06

0.07

0.05

0.06

0.07

0.08

0.09

Low

0.07

0.08

0.10

0.13

0.15

0.08

0.10

0.13

0.15

0.11

0.14

0.19

0.22

0.01

0.02

0.01

0.02

0.03

High

2 Element

0.05

0.06

0.08

0.09

0.11

0.06

0.08

0.09

0.11

0.08

0.10

0.14

0.16

0.11

0.13

0.15

0.17

0.19

0.22

0.17

0.19

0.24

0.27

0.30

2”

4”

Economizer

0.331

0.040

0.049

0.059

0.070

0.040

0.049

0.059

0.070

0.054

0.065

0.077

0.091

0070

0.05

0.07

0.08

0.10

0.12

0.07

0.08

0.10

0.12

0.09

0.11

0.15

0.17

0.03

0.04

0.05

0.06

0.04

0.05

0.06

0.07

0.08

0.04

0.06

0.07

0.08

0.10

0.06

0.07

0.08

0.10

0.08

0.09

0.13

0.15

0.07

0.08

0.10

0.11

0.12

0.14

0.11

0.12

0.16

0.18

0.20

0.03

0.04

0.05

0.06

0.07

0.04

0.05

0.06

0.07

0.06

0.07

0.09

0.11

0.07

0.09

0.10

0.12

0.13

0.15

0.12

0.13

0.17

0.19

0.21

0.02

0.03

0.04

0.05

0.03

0.04

0.05

0.06

0.04

0.06

0.07

0.08

0.05

0.06

0.07

0.09

0.10

0.11

0.09

0.10

0.12

0.14

0.15

23 (80)

25 (88)

10000

8750

9580

29 (103)

11200

12100

10000

10800

11700

12500

13300

14200

12500

13300

14200

15800

16700

0.076

0.085

0.096

0.107

0.120

0.095

0.108

0.120

0.136

0.155

33 (118)

42 (146)

0.08

0.10

0.11

0.12

Please note: Standard fan performance table includes pressure drops of wet coil and std. filters.

Table 28-2 – Component Static Pressure Drops (Pa) 50 Hz Metric

Heating System

Filters

High Eff. Filters

50 mm 100 mm

Nominal

L/s

Std Air

3150

3540

3930

4320

4720

3540

3930

4320

5120

4130

4520

4920

5310

4720

5120

5510

5900

6290

6680

5900

6290

6680

7070

7470

Gas Heat

Electric Heat

ID Coil

Adder

Inlet Guide

Vanes

Std.kW (Tons)

Low

High

1 Element

2 Element

Economizer

0.05

0.07

0.08

0.10

0.12

0.07

0.08

0.12

0.14

0.09

0.11

0.13

0.15

0.12

0.14

0.16

0.18

0.21

0.24

0.18

0.21

0.24

0.27

0.30

80 (23)

88 (25)

103 (29)

118 (33)

146 (42)

Please note: Standard fan performance table includes pressure drops of wet coil and std. filters.

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Performance

Data

Table 29-1 – Supply Air Fan Drive Selections

5 HP

7.5 HP

10 HP

15 HP

Nominal

Tons (kW)

Drive

RPM

458

500

541

583

625

458

500

541

583

625

500

541

583

658

664

417

437

479

521

562

604

437

479

521

562

604

RPM

23 (80)

25 (88)

29 (103)

583

625*

583

625

541

583

658**

664*

417

437

479

33 (118)

42 (146)

521

562

604

437

479

521

562

604

Note:

*For YC gas/electrics only.

**For TC and TE Cooling only and with electric Heat units only.

Table 29-2 – Power Exhaust Fan

Table 29-3 – Power Exhaust Fan

Performance - 50 Hz

External Static Pressure

– Pa

Performance - 50 Hz English

Metric

External Static Pressure

– Inches of Water

Exhaust

Airflow

(Cfm)

1000

1500

2000

2500

3000

3500

4000

4500

5000

5500

6000

6500

7000

7500

8000

8500

9000

9500

10000

High

Speed

ESP

Med

Speed

ESP

–

Low

Speed

ESP

–

Exhaust

Airflow

(L/s)

470

710

High

Speed

ESP

Med

Speed

ESP

–

Low

Speed

ESP

–

0.800

0.780

0.750

0.720

0.680

0.650

0.610

0.560

0.520

0.460

0.420

0.360

0.310

0.250

0.200

0.150

0.100

0.040

0.000

199.3

194.3

186.8

179.4

169.4

161.9

152.0

139.5

129.5

114.6

104.6

89.7

77.2

62.3

49.8

37.4

24.9

10.0

0.0

–

0.400

0.380

0.370

0.360

0.340

0.320

0.300

0.280

0.250

0.230

0.190

0.150

0.120

0.070

0.000

–

940

99.6

94.7

92.2

89.7

84.7

79.7

74.7

69.7

62.3

57.3

47.3

37.4

29.9

17.4

0.0

–

1180

1420

1650

1890

2120

2360

2600

2830

3070

3300

3540

3780

4010

4250

4480

4720

0.420

0.380

0.360

0.330

0.310

0.290

0.270

0.240

0.200

0.160

0.120

0.060

0.000

–

104.6

94.7

89.7

82.2

77.2

72.2

67.3

59.8

49.8

39.9

29.9

14.9

0.0

–

Notes:

1. Performance in table is with both motors operating.

2. High speed = both motors on high speed. Medium speed is one motor on high speed and one on low

speed. Low speed is both motors on low speed.

3. Power Exhaust option is not to be applied on systems that have more return air static pressure drop

than the maximum shown in the table for each motor speed tap.

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Electrical

Data

Electrical Service Sizing

To correctly size electrical service

wiring for your unit, find the

RDE = (1.5 x LOAD1) + LOAD2 +

LOAD4

Select a fuse rating equal to the MOP

value. If the MOP value does not equal

a standard fuse size as listed in NEC

240-6, select the next lower standard

fuse rating. NOTE: If selected MOP is

less than the MCA, then reselect the

lowest standard maximum fuse size

which is equal to or larger than the

MCA, provided the reselected fuse size

does not exceed 800 amps.

Select a fuse rating equal to the RDE

value. If the RDE value does not equal a

standard fuse size as listed in NEC 240-

6, select the next higher standard fuse

rating. NOTE: If the selected RDE is

greater than the selected MOP value,

then reselect the RDE value to equal

the MOP value.

appropriate calculations listed below.

Each type of unit has its own set of

calculations for MCA (Minimum Circuit

Ampacity), MOP (Maximum

Overcurrent Protection), and RDE

(Recommended Dual Element fuse

size). Read the load definitions that

follow and then find the appropriate set

of calculations based on your unit type.

RDE = (1.5 x LOAD1) + LOAD2 +

LOAD3 + LOAD4

DSS = 1.15 x (LOAD1 + LOAD2 +

LOAD4)

Set 1 is for cooling only and cooling

with gas heat units, and set 2 is for

cooling with electric heat units.

The selection RDE value will be the

larger of the cooling mode RDE value

or the heating mode RDE value

calculated above.

Select a disconnect switch size equal to

or larger than the DSS value calculated.

Set 2. Rooftop units with Electric Heat

Load Definitions

To arrive at the correct MCA, MOP, and

RDE values for these units, you must

perform two sets of calculations. First

calculate the MCA, MOP, and RDE

values as if the unit was in cooling

mode (use the equations given in Set

1). Then calculate the MCA, MOP, and

RDE values as if the unit were in the

heating mode as follows.

LOAD1 = CURRENT OF THE LARGEST

MOTOR (COMPRESSOR OR FAN

MOTOR)

Select a fuse rating equal to the RDE

value. If the RDE value does not equal a

standard fuse size as listed in NEC 240-

6, select the next higher standard fuse

rating. NOTE: If the selected RDE is

greater than the selected MOP value,

then reselect the RDE value to equal

the MOP value.

LOAD2 = SUM OF THE CURRENTS OF

ALL REMAINING MOTORS

LOAD3 = CURRENT OF ELECTRIC

HEATERS

LOAD4 = ANY OTHER LOAD RATED AT

1 AMP OR MORE

DSS = 1.15 x (LOAD1 + LOAD2 +

LOAD3 + LOAD4)

(Keep in mind when determining

LOADS that the compressors and

condenser fans don’t run while the unit

is in the heating mode).

Set 1. Cooling Only Rooftop Units and

Cooling with Gas Heat Rooftop Units

NOTE: Keep in mind when determining

LOADS that the compressors and

condenser fans don’t run while the unit

is in the heating mode.

MCA = (1.25 x LOAD1) + LOAD2 +

LOAD4

For units using heaters less than 50 kW.

MCA = 1.25 x (LOAD1 + LOAD2 +

LOAD4) + (1.25 x LOAD3)

The selection DSS value will be the

larger of the cooling mode DSS or the

heating mode DSS calculated above.

MOP = (2.25 x LOAD1) + LOAD2 +

LOAD4

For units using heaters equal to or

greater than 50 kW.

Select a fuse rating equal to the MOP

value. If the MOP value does not equal

a standard fuse size as listed in NEC

240-6, select the next lower standard

fuse rating. NOTE: If selected MOP is

less than the MCA, then reselect the

lowest standard maximum fuse size

which is equal to or larger than the

MCA, provided the reselected fuse size

does not exceed 800 amps.

Select a disconnect switch size equal to

or larger than the DSS value calculated.

MCA = 1.25 x (LOAD1 + LOAD2 +

LOAD4) + LOAD3

The nameplate MCA value will be the

larger of the cooling mode MCA value

or the heating mode MCA value

calculated above.

MOP = (2.25 x LOAD1) + LOAD2 +

LOAD3 + LOAD4

The selection MOP value will be the

larger of the cooling mode MOP value

or the heating mode MOP value

calculated above.

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Electrical

Data

Table 31-1 – Electrical Service Sizing Data

Fan Motors

Compressor

Supply

7.5

Condenser

Electrical²

Characteristics

380-415/50/3

Qty./

RLA

(Ea.)

18.1/27.3

27.3

LRA

Ea.)

110/174

174

FLA

(Ea.)

4.4

Max.

MCA* Fuse Size

Model

Nominal HP

2/10,15

2/15,15

1/10

FLA

13.1

16.6

No.

.75

TC/TE/YC*275

TC/TE/YC*305

TC/TE/YC*350

TC/TE/YC*400

100

110

125

27.3

18.1

4.4

119

110

TC/TE/YC*500

Notes:

380-415/50/3

3/15

27.3

174

7.5

16.6

.75

4.4

128

150

1. All customer wiring and devices must be installed in accordance with local and national electrical codes.

2. Allowable voltage range for the 380V unit is 342-418V, allowable voltage range for the 415V unit is 373-456.

* Minimum Circuit Ampacity.

Table 31-2 – Electrical Service Sizing Data – Electric Heat Module

(Electric Heat Units Only)

Models: TED/TEH 275 thru 500

Electric Heat FLA

Nominal

Unit Size

(Tons)

Nominal

Unit

Voltage

380

415

380

KW Heater (380/415V)

23/27

34.5

37.6

–

34/40

51.1

55.6

51.1

55.6

45/54

68.9

–

68.9

75.1

56/67

85.5

–

85.5

93.2

68/81

–

103.4

112.7

23-29

33, 43

415

–

Notes:

1. All FLA in this table are based on heater operating at 380 or 415 volts as shown above.

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Controls

VAV Units Only

Sequence of Operation

On units with economizer, a call for

cooling will modulate the fresh air

dampers open. The rate of economizer

modulation is based on deviation of the

discharge temperature from setpoint,

i.e., the further away from setpoint, the

faster the fresh air damper will open.

Note that the economizer is only

allowed to function freely if ambient

conditions are below the enthalpy

control setting or below the return air

enthalpy if unit has comparative

enthalpy installed. If outside air is not

suitable for “economizing,” the fresh

air dampers drive to the minimum

open position. A field adjustable

potentiometer on the Unitary

reset amount input. The maximum

value is 20°F (-6.7°C). If the outdoor air

temperature is more than 20°F (-6.7°C)

below the reset temperature setpoint

the amount of rest is equal to the reset

amount setpoint.

Supply Air Pressure Control

Inlet Guide Vane Control

•

Inlet guide vanes are driven by a

modulating 2-10 vdc signal from the

VAV Module. A pressure transducer

measures duct static pressure, and the

inlet guide vanes are modulated to

maintain the supply air static pressure

within an adjustable user-defined

range. The range is determined by the

supply air pressure setpoint and supply

air pressure deadband, which are set

through a unit mounted potentiometer.

reset based on zone or return

temperature

Zone or return reset is applied to the

zone(s) in a building that tend to

overcool or overheat. The supply air

temperature setpoint is adjusted based

on the temperature of the critical

zone(s) or the return air temperature.

This can have the effect of improving

comfort and/or lowering energy usage.

The user-defined parameters are the

same as for outdoor air reset.

Inlet guide vane assemblies installed

on the supply fan inlets regulate fan

capacity and limit horsepower at lower

system air requirements. When in any

position other than full open, the vanes

pre-spin intake air in the same direction

as supply fan rotation. As the vanes

approach the full-closed position, the

amount of “spin” induced by the vanes

increases at the same time that intake

airflow and fan horsepower diminish.

The inlet guide vanes will close when

the supply fan is shut down.

Economizer Module, Tracer^®, or a

remote potentiometer can provide the

input to establish the minimum

damper position.

Logic for zone or return reset control is

the same except that the origins of the

temperature inputs are the zone sensor

or return sensor respectively. The

amount of reset applied is dependent

upon how far the zone or return air

temperature is below the supply air

reset setpoint. The amount is zero

where they are equal and increases

linearly toward the value set at the

reset amount potentiometer on the

VAV Setpoint panel. The maximum

value is 3°F (-16.1°C). If the return or

zone temperature is more than

3°F (-16.1°C) below the reset

At outdoor air conditions above the

enthalpy control setting, primary

cooling only is used and the fresh air

dampers remain at minimum position.

If the unit does not include an

economizer, primary cooling only is

used to satisfy cooling requirements.

Supply Air Static Pressure Limit

The opening of the inlet guide vanes

and VAV boxes are coordinated during

unit start up and transition to/from

Occupied/Unoccupied modes to

prevent overpressurization of the

supply air ductwork. However, if for any

reason the supply air pressure exceeds

the fixed supply air static pressure limit

of 3.5” (89 mm) W.C., the supply fan is

shut down and the inlet guide vanes

are closed. The unit is then allowed to

restart four times. If the

overpressurization condition occurs on

the fifth time, the unit is shut down and

a manual reset diagnostic is set and

displayed at any of the remote panels

with LED status lights or

communicated to the Integrated

Comfort system.

Supply Air Setpoint Reset

•

Supply air reset can be used to adjust

the supply air temperature setpoint on

the basis of a zone temperature, return

air temperature, or on outdoor air

temperature. Supply air reset

adjustment is available on the unit

mounted VAV Setpoint Panel for supply

air cooling control.

temperature setpoint the amount of

reset is equal to the reset amount

setpoint.

Zone Temperature Control

reset based on outdoor air

temperature

Unoccupied Zone Heating and Cooling

During Unoccupied mode, the unit is

operated as a CV unit. Inlet guide vanes

and VAV boxes are driven full open.

The unit controls zone temperature to

the Unoccupied zone cooling and

Outdoor air cooling reset is sometimes

used in applications where the outdoor

temperature has a large effect on

building load. When the outside air

temperature is low and the building

cooling load is low, the supply air

setpoint can be raised, thereby

preventing subcooling of critical zones.

This reset can lower usage of primary

cooling and result in a reduction in

primary cooling energy usage.

heating (heating units only) setpoints.

Daytime Warm-Up

During occupied mode, if the zone

temperature falls to a temperature

three degrees below the Morning

Warm-up setpoint, Daytime Warm-up

is initiated. The system changes to CV

heating (full unit airflow), the VAV

boxes are fully opened and the CV

heating algorithm is in control until the

Morning Warm-up setpoint is reached.

The unit is then returned to VAV

cooling mode. The Morning Warm-up

setpoint is set at the unit mounted VAV

Setpoint panel or at a remote panel.

Supply Air Temperature Controls

Cooling/Economizer

•

During occupied cooling mode of

operation, the economizer (if available)

and primary cooling are used to control

the supply air temperature. The supply

air temperature setpoint is user-defined

at the unit mounted VAV Setpoint Panel

or at the remote panel. If the enthalpy

of the outside air is appropriate to use

“free cooling,” the economizer will be

used first to attempt to satisfy the

supply setpoint.

There are two user-defined parameters

that are adjustable through the VAV

Setpoint Panel: reset temperature

setpoint and reset amount. The

amount of reset applied is dependent

upon how far the outdoor air

temperature is below the supply air

reset setpoint. The amount is zero

where they are equal and increases

linearly toward the value set at the

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Controls

CV Units Only

Economizer Module (UEM), Tracer or a

remote potentiometer can provide the

input to establish the minimum

damper position.

The supply fan is energized

VAV Units Only

Morning Warm-up (MWU)

approximately 1 second before the

electric heat contactors. When the

space temperature rises above the

heating setpoint, the UCP de-energizes

the supply fan and all electric heat

contactors.

Morning warm-up control (MWU) is

activated whenever the unit switches

from unoccupied to occupied and the

zone temperature is at least 1.5°F

below the MWU setpoint. When MWU

is activated the VAV box output will be

energized for at least 6 minutes to drive

all boxes open, the inlet guide vanes

are driven full open, and all stages of

heat (gas or electric) are energized.

When MWU is activated the

economizer damper is driven fully

closed. When the zone temperature

meets or exceeds the MWU setpoint

minus 1.5°F, the heat will be staged

down. When the zone temperature

meets or exceeds the MWU setpoint

then MWU will be terminated and the

unit will switch over to VAV cooling.

At outdoor air temperatures above the

enthalpy control setting, primary

cooling only is used and the outdoor

air dampers remain at minimum

position.

Supply Air Tempering

This feature is available only with

TRACER or with systems using

programmable zone sensors (CV only

with economizer). For gas and electric

heat units in the Heat mode but not

actively heating, if the supply air

temperature drops to 10°F (-12.2°C)

below the occupied zone heating

temperature setpoint, one stage of heat

will be brought on to maintain a

minimum supply air temperature. The

heat stage is dropped if the supply air

temperature rises to 10°F (-12.2°C)

above the occupied zone heating

temperature setpoint.

If the unit does not include an

economizer, primary cooling only is

used to satisfy cooling requirements.

Heating

Gas Heating

When heating is required the UCP

initiates the heating cycle by energizing

the K5 relay, heating relay(s), and the

ignition control module(s). The K5 relay

brings on the combustion fan motor.

The ignition control module(s) begin

the ignition process by preheating the

hot surface ignitor(s). After the hot

surface ignitor is preheated the gas

valve is opened to ignite first stage. If

ignition does not take place the ignition

control module(s) will attempt to ignite

2 more times before locking out. When

ignition does occur the hot surface

ignitor is de-energized and then

CV Units Only

Sequence of Operation

Auto Changeover

When the System Mode is “Auto,” the

mode will change to cooling or heating

as necessary to satisfy the zone cooling

and heating setpoints. The zone

cooling and heating setpoints can be as

close as 2°F (-16.7°C) apart.

Occupied Zone Temperature Control

Cooling/Economizer

During occupied cooling mode, the

economizer (if provided) and primary

cooling are used to control zone

temperature. If the enthalpy of outside

air is appropriate to use “free cooling,”

the economizer will be used first to

attempt to satisfy the cooling zone

temperature setpoint; then primary

cooling will be staged up as necessary.

functions as a flame sensor. The UCP

will energize the supply fan contactor

45 seconds after the initiation of the

heat cycle. If more capacity is needed

to satisfy the heating setpoint, the UCP

will call for the second stage of heat by

driving the combustion blower motor

to high speed.

Unoccupied Zone Temperature Control

Cooling and Heating

Both cooling or heating modes can be

selected to maintain Unoccupied zone

temperature setpoints. For Unoccupied

periods, heating or primary cooling

operation can be selectively locked out

at the remote panels or TRACER.

On units with economizer, a call for

cooling will modulate the fresh air

dampers open. The rate of economizer

modulation is based on deviation of the

zone temperature from setpoint, i.e.,

the further away from setpoint, the

faster the fresh air damper will open.

First stage of cooling will be allowed to

start after the economizer reaches full

open.

When the space temperature rises

above the heating setpoint, the UCP de-

energizes the K5 relay, the heating

relays, and the ignition control module,

terminating the heat cycle.

Electric Heating

When heat is required, the UCP

initiates first stage heating by

energizing the first stage electric heat

contactor. The first stage electric heater

bank(s) will be energized if the

appropriate limits are closed. The UCP

will cycle first stage heat on and off as

required to maintain zone temperature.

If first stage cannot satisfy the

requirement, the UCP will energize the

second stage electric heat contactor(s)

if the appropriate limits are closed. The

UCP will cycle second stage on and off

as required while keeping stage one

energized.

Note that the economizer is allowed to

function freely only if ambient

conditions are below the enthalpy

control setting or below the return air

enthalpy if unit has comparative

enthalpy. If outside air is not suitable

for “economizing,” the fresh air

dampers drive to the minimum open

position. A field adjustable

potentiometer on the Unitary

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Controls

Both VAV and

CV Units

Control Sequences of Operation That are Common to Both VAV and CV Units

Ventilation Override (VOM)

Night Setback Sensors

Timed Override Activation – ICS

Ventilation override allows an external

system to assume control of the unit

for the purpose of exhaust or

Trane’s night setback sensors are

programmable with a time clock

function that provides communication

to the rooftop unit through a two-wire

communications link. The desired

transition times are programmed at the

night setback sensor and

When this function is initiated by

pushing the override button on the ICS

sensor, TRACER will switch the unit to

the occupied mode. Unit operation

(occupied mode) during timed override

is terminated by a signal from TRACER.

pressurization. There are two inputs

associated with ventilation override,

the initiate input and the select input.

When the UCP senses a continuous

closed condition on the initiate input at

the low voltage terminal board the unit

will begin ventilation override

depending on the condition of the

select input. The default condition of

the select input is exhaust (input open).

A closed select input will yield

Timed Override Activation – Non-lCS

When this function is initiated by the

push of an override button on the

programmable zone sensor, the unit

will switch to the occupied mode.

Automatic Cancellation of the Timed

override Mode occurs after three hours

of operation.

communicated to the unit.

Night setback (unoccupied mode) is

operated through the time clock

provided in the sensors with night

setback. When the time clock switches

to night setback operation, the outdoor

air dampers close and heating/cooling

can be enabled or disabled. As the

building load changes, the night

setback sensor communicates the need

for the rooftop heating/cooling (if

enabled) function and the evaporator

fan. The rooftop unit will cycle through

the evening as heating/cooling (if

enabled) is required in the space. When

the time clock switches from night

setback to occupied mode, all heating/

cooling functions begin normal

operation.

pressurization. The component state

matrix for ventilation override is as

follows:

Comparative Enthalpy Control

of Economizer

The Unitary Economizer Module (UEM)

receives inputs from optional return air

humidity and temperature sensors and

determines whether or not it is feasible

to economize. If the outdoor air

enthalpy is greater than the return air

enthalpy then it is not feasible to

economize and the economizer

damper will not open past its minimum

position.

System

Component

Heat/Cool

Exhaust

off

Pressurization

off

IGV

closed

off

closed

open

n/a

open

off

open

closed

open

Supply Fan

Exhaust Fan

Outside Air Damper

Return Air Damper

VAV Boxes

™

Coil Freeze Protection FROSTAT

The FROSTAT system eliminates the

need for hot gas bypass and adds a

suction line surface temperature sensor

to determine if the coil is in a condition

of impending frost. If impending frost is

detected primary cooling capacity is

shed as necessary to prevent icing. All

compressors are turned off after they

have met their minimum three minute

on times. The supply fan is forced on

until the FROSTAT device no longer

senses a frosting condition or for 60

seconds after the last compressor is

shut off, which ever is longer.

When using the night setback options

with a VAV heating/cooling rooftop,

airflow must be maintained through

the rooftop unit. This can be

accomplished by electrically tying the

VAV boxes to the VAV heat relay

contacts on the Low voltage terminal

board or by using changeover

thermostats. Either of these methods

will assure adequate airflow through

the unit and satisfactory temperature

control of the building.

Emergency Stop Input

A binary input is provided on the UCP

for installation of field provided switch

or contacts for immediate shutdown of

all unit functions. The binary input is

brought out to Low Voltage Terminal

Board One (LTB1).

Conventional Thermostat Interface

(CV ONLY)

An interface is required to use a

conventional thermostat instead of a

zone sensor module with the UCP. The

Conventional Thermostat Interface

(CTI) is connected between

conventional thermostat and the UCP

and will allow only two steps of heating

or cooling. The CTI provides zone

temperature control only and is

mutually exclusive of the Trane

Communications Interface.

Occupied/Unoccupied Switching

There are three ways to switch

Occupied/Unoccupied:

NSB Panel

Field-supplied contact closure

TRACER

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Dimensional

Data

Figure 35-1 – 23-29 Tons (TC, TE, YC Low Heat)

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Dimensional

Data

Figure 36-1 – 23-29 Tons (YC High Heat)

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Dimensional

Data

Figure 37-1 – 33-42 Tons (TC, TE, YC Low & High Heat)

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Weights

Table 38-1 — Approximate Operating Weights — Lbs.

Basic Unit Weights¹

Weight of Optional Components

Non-

Fact.

Hi-Stat/

0-25%

Man

Inlet

Guide

Vanes

Thru-the

base

Elec.

Fused GFI with

Discon. Discon.

Switch Switch

Unit

Baro.

Power

Hi Eff. Sup

Serv

Valves

Model Low Heat High Heat

Relief Exhaust Fan Motor²Damper

Econ.

260

285

260

285

260

285

290

300

290

300

**D275

**H275

**D305

**H305

**D350

**H350

**D400

**H400

**D500

**H500

3650

3730

3815

4665

4690

4835

4860

4012

4077

4092

4142

4177

4227

4785

4815

4955

4985

3520 3553

3565 3598

3600 3633

3685 3718

4440 4475

4610 4645

110

145

110

145

110

145

110

145

110

145

165

200

165

200

165

200

165

200

165

200

120

125

Notes:

1. Basic unit weight includes minimum HP Supply Fan Motor.

2. Optional high static and high efficiency motor weights are in addition to the standard motor weight included in the basic unit weight.

Table 38-2 — Approximate Operating Weights — Kgs.

Basic Unit Weights¹

Weight of Optional Components

Non-

Fact.

Hi-Stat/

0-25%

Man

Inlet

Guide

Vanes

Thru-the

base

Elec.

Fused GFI with

Discon. Discon.

Switch Switch

Unit

Baro.

Power

Hi Eff. Sup

Serv

Valves

Model Low Heat High Heat

Relief Exhaust Fan Motor²Damper

Econ.

117

128

117

128

117

128

131

135

131

135

**D275

**H275

**D305

**H305

**D350

**H350

**D400

**H400

**D500

**H500

1643

1679

1717

2099

2111

2176

2187

1805

1835

1841

1864

1880

1902

2153

2167

2230

2243

1584 1599

1604 1619

1620 1635

1658 1673

1998 2014

2075 2090

Notes:

1. Basic unit weight includes minimum HP Supply Fan Motor.

2. Optional high static and high efficiency motor weights are in addition to the standard motor weight included in the basic unit weight.

Table 38-3 — Point Loading Percentage of Total Unit Weight¹

POINT LOADING - % OF TOTAL UNIT WEIGHT

TOP VIEW

OF UNIT

1. Point Loading is identified with corner A being the corner with the compressors. As you

move clockwise around the unit as viewed from the top, mid-point B, corner C, corner D,

mid-point E and corner F.

COMPRS

Table 38-4 — Minimum Operating Clearances for Unit Installation

Condenser Coil²

Service Side

Access

4 Feet (1.21 M)

Econo / Exhaust End

6 Feet (1.82 M)

End / Side

8 Feet / 4 Feet (2.43/1.21 M)

16 Feet / 8 Feet (4.87/2.43 M)

Single Unit¹

Multiple Unit^1,3

12 Feet (3.65 M)

8 Feet (2.43 M)

Notes:

1. Horizontal and Downflow Units, all sizes.

2. Condenser coil is located at the end and side of the unit.

3. Clearances on multiple unit installations are distances between units.

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Field

Installed

Sensors

Variable Air

Volume

SINGLE SETPOINT SENSOR WITH

SYSTEM FUNCTION LIGHTS (BAYSENS021*)

PROGRAMMABLE NIGHT-SETBACK

SENSOR (BAYSENS020*)

NOTE:

Remote sensors are available for use with all zone sensors to provide

remote sensing capabilities.

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Field

Installed

Sensors

Constant

Volume

DUAL SETPOINT, MANUAL/AUTOMATIC CHANGEOVER SENSOR WITH SYSTEM

FUNCTION LIGHTS (BAYSENS010*)

WITHOUT LED STATUS INDICATORS (BAYSENS008*)

SINGLE SETPOINT WITHOUT LED STATUS INDICATORS

(BAYSENS006*)

PROGRAMMABLE NIGHT-SETBACK

SENSOR (BAYSENS019*)

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Field

Installed

Sensors

Constant and

Variable

Air Volume

™

Integrated Comfort System Sensors

ZONE TEMPERATURE SENSOR

W/TIMED OVERRIDE BUTTON (BAYSENS013*)

ZONE TEMPERATURE SENSOR W/TIMED OVERRIDE BUTTON

AND LOCAL SETPOINT ADJUSTMENT (BAYSENS014*)

ALSO AVAILABLE SENSOR ONLY (BAYSENS017*)

Color: Cool Pantone Gray

TEMPERATURE SENSOR (BAYSENS016*)

REMOTE MINIMUM POSITION

POTENTIOMETER CONTROL (BAYSTAT023)

NOTE: Remote sensors are available for use with all zone sensors to provide remote sensing capabilities.

Note:

Dimensions in ( ) are mm

1” = 25.4 mm

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Mechanical

Specifications

General

Refrigerant Circuits

surface ignition system. In order to

provide reliable operation, a negative

pressure gas valve shall be used that

requires blower operation to initiate

gas flow. On an initial call for heat, the

combustion blower shall purge the

heat exchanger(s) 45 seconds before

ignition. After three unsuccessful

ignition attempts, the entire heating

system shall be locked out until

manually reset at the thermostat. Units

shall be suitable for use with natural

gas or propane (field installed kit). All

units shall have two stage heating.

The units shall be dedicated downflow

or horizontal airflow. The operating

range shall be between 115°F and 0°F

(46.1°C and -17.8°C) in cooling as

standard from the factory for all units.

60 HZ cooling performance shall be

rated in accordance with ARI testing

procedures. All units shall be factory

assembled, internally wired, fully

charged with HCFC-22 and

Each refrigerant circuit shall have

independent thermostatic expansion

devices, service pressure ports and

refrigerant line filter driers factory-

installed as standard. An area shall be

provided for replacement suction line

driers.

Evaporator and Condenser Coils

Condenser coils shall have ³/8” (10 mm)

copper tubes mechanically bonded to

lanced aluminum plate fins. Evaporator

coils shall be ¹/2” (13 mm) internally

finned copper tubes mechanically

bonded to high performance

aluminum plate fins. All coils shall be

leak tested at the factory to ensure

pressure integrity. All coils shall be leak

tested to 200 psig and pressure tested

to 450 psig. All evaporator coils shall

be of intermingled configuration.

100 percent run tested to check cooling

operation, fan and blower rotation and

control sequence before leaving the

factory. Wiring internal to the unit

shall be numbered for simplified

identification.

Controls

Unit shall be completely factory wired

with necessary controls and terminal

block for power wiring. Units shall

provide an external location for

mounting fused disconnect device.

Microprocessor controls shall be

provided for all 24 volt control

functions. The resident control

algorithms shall make all heating,

cooling and/or ventilating decisions in

response to electronic signals from

sensors measuring indoor and outdoor

temperatures. The control algorithm

maintains accurate temperature

control, minimizes drift from set point

and provides better building comfort.

A centralized microprocessor shall

provide anti-short cycle timing and

time delay between compressors to

provide a higher level of machine

protection.

Casing

Unit casing shall be constructed of zinc

coated, heavy-gauge, galvanized steel.

All components shall be mounted in a

weather resistant steel cabinet with a

painted exterior. Where top cover

seams exist, they shall be double

hemmed and gasket sealed to prevent

water leakage. Cabinet construction

shall allow for all maintenance on one

side of the unit. Service panels shall

have handles and shall be removable

while providing a water and air tight

seal. Control box access shall be

hinged. The indoor air section shall be

completely insulated with fire resistant,

permanent, odorless glass fiber

material. The base of the unit shall

have provisions for crane lifting.

Outdoor Fans

The outdoor fan shall be direct-drive,

statically and dynamically balanced,

draw through in the vertical discharge

position. The fan motor(s) shall be

permanently lubricated and have built-

in thermal overload protection.

Indoor Fan

Units shall have belt driven, FC,

centrifugal fans with fixed motor

sheaves. All motors shall be circuit

breaker protected.

Electric Heaters

Electric heat shall be available for

factory installation within basic unit.

Electric heater elements shall be

constructed of heavy-duty nickel

chromium elements wye connected for

380 and 415 volt. Staging shall be

achieved through the unitary control

processor (UCP). Each heater package

shall have automatically reset high limit

control operating through heating

element contactors. All heaters shall be

individually fused from factory, where

required, and meet all NEC and CEC

requirements. Power assemblies shall

provide single-point connection.

Filters

Control Options

Two-inch (51 mm), throwaway filters

shall be standard on all size units.

Two-inch (51 mm) “high efficiency,”

and four-inch (102 mm) “high

efficiency” filters shall be optional.

Inlet Guide Vanes shall be installed on

each fan inlet to regulate capacity and

limit horsepower at lower system

requirements. When in any position

other than full open they shall pre-spin

intake air in the same direction as fan

rotation. The inlet guide vanes shall

close when supply fan is off, except in

night setback.

Compressors

All units shall have direct-drive,

hermetic, scroll type compressors with

centrifugal type oil pump providing

positive lubrication to moving parts.

Motor shall be suction gas-cooled and

shall have a voltage utilization range of

plus or minus 10 percent of unit

nameplate voltage. Internal

The inlet guide vane actuator motor

shall be driven by a modulating dc

signal from the unit microprocessor. A

pressure transducer shall measure duct

static pressure and modulate the inlet

guide vanes to maintain the required

supply air static pressure within a

predetermined range.

Gas Heating Section

The heating section shall have a drum

and tube heat exchanger(s) design

using corrosion resistant steel

temperature and current sensitive

motor overloads shall be included for

maximum protection. Shall have

internal sound muffling to minimize

vibration transmission and noise.

External discharge temperature limit,

winding temperature limit and

compressor overload shall be

provided.

components. A forced combustion

blower shall supply premixed fuel to a

single burner ignited by a pilotless hot

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Mechanical

Specifications

Variable Frequency Drives (VFDs) shall

be factory installed and tested to

provide supply fan motor speed

modulation. The VFD shall receive a

2-10 VDC signal from the unit

microprocessor based upon supply

static pressure and shall cause the

drive to accelerate or decelerate as

required to maintain the supply static

pressure setpoint. When subjected to

high ambient return conditions

(>100°F) (>37.3°C) the VFD shall be

limited to a maximum output of 48

hertz until the temperature drops below

100°F (37.3°C). Bypass control to

provide full nominal air flow in the

event of drive failure shall be optional.

Curb shall ship knocked down for field

assembly and include wood nailer

strips.

Unit Options

Service Valves

Service valves shall be provided factory

installed and include suction, liquid,

and discharge three-way shutoff

valves.

Trane Communication Interface (TCI)

Shall be provided to interface with the

™

Trane Integrated Comfort system and

shall be available factory installed. The

TCI shall allow control and monitoring

of the rooftop unit via a two-wire

communication link.

Through-The-Base Electrical Provision

An electrical service entrance shall be

provided which allows access to route

all high and low voltage electrical

wiring inside the curb, through the

bottom of the outdoor section of the

unit and into the control box area.

The following alarm and diagnostic

information shall be available:

UCP Originated Data

Unit operating mode

Unit failure status

Cooling failure

Heating failure

•

Non-Fused Disconnect Switch

A factory installed non-fused

disconnect switch with external handle

shall be provided and shall satisfy NEC

requirements for a service disconnect.

The non-fused disconnect shall be

mounted inside the unit control box.

Ventilation Override shall allow a

binary input from the fire/life safety

panel to cause the unit to override

standard operation and assume one of

two factory preset ventilation

sequences, exhaust or pressurization.

The two sequences shall be selectable

based open a binary select input.

Emergency service stop indication

Supply fan proving

Timed override activation

High temperature thermostat status

Zone temperature

Supply air temperature

Cooling status (all stages)

Stage activated or not

Stage locked out by UCP

HCP status for that stage

Compressor disable inputs

Heating status

Number of stages activated

High temperature limit status

Economizer status

GFI Convenience Outlet

(Factory Powered)

•

A 15A, 115V Ground Fault Interrupter

convenience outlet shall be factory

installed. It shall be wired and powered

from a factory mounted transformer or

field powered through a separate 115V

circuit. Unit mounted non-fused

disconnect with external handle shall

be furnished with factory powered

outlet.

Outside Air

Manual Outside Air

A manually controllable outside air

damper shall be adjustable for up to

25 percent outside air. Manual damper

is set at desired position at unit

start up.

Enthalpy favorability status

Requested minimum position

Damper position

GFI Convenience Outlet

(Field Powered)

A 15A, 115V Ground Fault Interrupter

convenience outlet shall be factory

installed and shall be powered by

customer provided 115V circuit.

Economizer shall be factory installed.

The assembly includes: fully

modulating 0-100 percent motor and

dampers, minimum position setting,

preset linkage, wiring harness, and

fixed dry bulb control. Solid-state

enthalpy and differential enthalpy

control shall be as a factory or field

installed option.

Dry bulb/enthalpy input status

Outside air temperature

Outside relative humidity

Sensor Failure

Hinged Service Access

Humidity sensor

Filter access panel and supply fan

access panel shall be hinged for ease of

unit service.

OAT sensor

SAT sensor

Exhaust Air

RAT sensor

Condenser Coil Guards

Zone temperature sensor

Mode input

Barometric Relief

Factory installed condenser vinyl

coated wire mesh coil guards shall be

available to provide full area protection

against debris and vandalism.

The barometric relief damper shall be

optional with the economizer. Option

shall provide a pressure operated

damper for the purpose of space

pressure equalization and be gravity

closing to prohibit entrance of outside

air during the equipment “off” cycle.

Cooling/heating setpoints from sensors

Static pressure transducer

Unit mounted potentiometer

SAT from potentiometer

Air reset setpoint from potentiometer

Unit configuration data

Gas or electric heat

Economizer present

High temp input status

Local setpoint

Accessories

Roof Curb

The roof curb shall be designed to

mate with the unit and provide support

and a water tight installation when

installed properly. The roof curb design

shall allow field-fabricated rectangular

supply/return ductwork to be

•

Power Exhaust Fan

Power exhaust shall be available on all

units and shall be factory installed. It

shall assist the barometric relief

damper in maintaining building

pressurization.

•

Local mode setting

Inlet guide vane position

connected directly to the curb when

used with downflow units. Curb design

shall comply with NRCA requirements.

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Tracer^®Originated Data

Command operating mode

Host controllable functions:

Supply fan

Remote Potentiometer

BAYSENS014* – Zone temperature

sensor with local temperature

adjustment control and timed override

buttons used with Tracer Integrated

Comfort system. May also be used for

Morning Warm-up setpoint and sensor.

A remote potentiometer shall be

available to remotely adjust the unit

economizer minimum position.

•

Economizer

High Temperature Thermostats

Cooling stages enabled

Heating stages enabled

Emergency shutdown

Minimum damper position

Heating setpoint

Field installed, manually resettable high

temperature thermostats shall provide

input to the unit controls to shut down

the system if the temperature sensed at

the return is 135°F (57°C) or at the

discharge 240°F (115°C).

BAYSENS016* – Temperature sensor is

a bullet or pencil type sensor that could

be used for temperature input such as

return air duct temperature.

•

Cooling setpoint

Supply air tempering enable/disable

Slave mode (CV only)

Tracer/local operation

SAT setpoint

BAYSENS017* – Remote sensor can be

used for remote zone temperature

sensing capabilities when zone sensors

are used as remote panels or as a

morning warm-up sensor for use with

VAV units or as a zone sensor with

Tracer Integrated Comfort system.

Reference Enthalpy Kit

Field installed enthalpy kit shall provide

inputs for economizer control based

upon comparison of the outside air

stream to a definable enthalpy

reference point. May also be factory

installed.

Reset setpoint

Reset amount

MWU setpoint

MWU enable/disable

SAT reset type select

Static pressure setpoint

Static pressure deadband

Daytime warm-up enable/disable

Power exhaust setpoint

BAYSENS019* and BAYSENS020* –

Electronic programmable sensors with

auto or manual changeover with seven

day programming. Keyboard selection

of heat, cool, auto fan or on. All

programmable sensors have System

on, Heat, Cool, Service LED/LCD

indicators as standard. Night setback

sensors have two occupied, and two

unoccupied programs per day. Sensors

are available for CV zone temperature

control and VAV zone temperature

control.

Comparative Enthalpy Kit

Field installed enthalpy kit shall provide

inputs for economizer control based

upon comparison of the enthalpies of

the return and outdoor air streams.

Also available factory installed.

Zone Sensors

Shall be provided to interface with the

Micro unit controls and shall be

available in either manual, automatic

programmable with night setback, with

system malfunction lights or remote

sensor options.

LP Conversion Kit

Field installed conversion kit shall

provide orifice(s) for simplified

conversion to liquefied propane gas.

No change of gas valve shall be

required.

Conventional Thermostat Interface

(CTI)

This field installed circuit board shall

provide interface with

electromechanical thermostats or

automation systems. Not available with

VAV system control.

BAYSENS021* – Zone sensor with

supply air single temperature setpoint

and AUTO/OFF system switch. Status

indication LED lights, System ON, Heat,

Cool, and Service are provided.

Sensors are available to be used with

VAV units.

BAYSENS006* – Zone sensor has one

temperature setpoint lever, heat, off or

cool system switch, fan auto or fan on

switch. Manual changeover. These

sensors are for CV units only.

BAYSENS008* – Zone sensor has two

temperature setpoint levers, heat, auto,

off, or cool system switch, fan auto or

fan on switch. Auto changeover. These

sensors are used with CV units.

Differential Pressure Switches

BAYSENS022* – Sensor is an

electronic digital zone sensor that can

be used as a Heat Auto/Cool

thermostat. The sensor has a large,

easily read continuous digital display of

the space temperature with setpoint

temperature displayed at the touch of a

button.

This field installed option allows

individual fan failure and dirty filter

indication. The fan failure switch will

disable all unit functions and “flash”

the Service LED on the zone sensor.

The dirty filter switch will light the

Service LED on the zone sensor and

will allow continued unit operation.

BAYSENS010* – Zone sensor has two

temperature set point levers, heat,

auto, off, or cool system switch, fan

auto or fan on switch. Status indication

LED lights, System on, Heat, Cool, and

Service are provided. These sensors

are used with CV units.

BAYSTAT023* – Remote Minimum

Position Potentiometer is used to

remotely specify the minimum

economizer position.

Electronic Time Clock

This field installed accessory kit will

allow the unit to operate in the

unoccupied mode or perform night set

up/set back functions utilizing a

standard individual scheduling.

BAYSENS013* – Zone temperature

sensor with timed override buttons

used with Tracer^®Integrated Comfort

system.

Library

Product Literature

Unitary

The Trane Company

International Unitary Systems Group

3600 Pammel Creek Road

La Crosse, WI 54601-7599

www.trane.com

Product Section

Product

Rooftop

Model

000

Literature Type

Sequence

Date

Data Sales Catalog

An American Standard Company

April 1999

File No.

PL-UN-RT-000-DS-10-499

RT-DS-10 12/94

RT-DS-10

Supersedes

Ordering No.

Since The Trane Company has a policy of continuous

product improvement, it reserves the right to change

design and specification without notice.

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