Trane RT-DS-10 User Manual

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RT-DS-10 April 1999

Packaged Rooftop Air Conditioners

23 to 42 Ton (81-148 kW)



Voyager

Commercial  50 HZ

Features and Benefits

Over the years the Voyager product line has developed into the most complete line of commercial packaged units available. We were first with the Micro when we developed microelectronic unit controls and we move ahead again with Voyager Commercial products.

©American Standard Inc. 1999

Five new sizes from 23-42 tons (81-148 kW) meet the needs of the changing commercial rooftop marketplace.

Our customers demand units that will have exceptional reliability, meet stringent performance requirements, and be competitively priced. These same requirements drove the design of the original light commercial Voyager and have been carried forward into Voyager Commercial.

Voyager Commercials features and benefits are comprised of cutting edge technologies like the reliable 3-D Scroll compressor, Trane engineered microprocessor controls, computeraided run testing, and Integrated Comfort the contractor, the engineer, or the owner you can be certain that when youve chosen Voyager Commercial, youve chosenSimply the best value!

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systems. So, whether youre

ContentsContents

Standard Features

Factory installed and commissioned

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microelectronic controls Trane 3-D Scroll compressors

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Dedicated downflow or horizontal

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configuration CV or VAV control

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FROSTAT coil frost protection on all

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units Supply air overpressurization

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protection on VAV units Supply airflow proving

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Emergency stop input

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Compressor lead-lag

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Occupied-unoccupied switching

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Timed override activation

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FC supply fans

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Two-inch (51 mm) standard efficiency

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filters Finish exceeds salt spray requirements

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of ASTM B117

Optional Features

Electric heat

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Natural gas heat

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LP gas heat (kit only)

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Power exhaust

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Barometric relief

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High efficiency 2 (51 mm) throwaway

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filters High efficiency 4 (102 mm) throwaway

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filters High efficiency supply fan motors

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Manual fresh air damper

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Economizer with dry bulb control

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Economizer with reference enthalpy

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control Economizer with differential



(comparative) enthalpy control Inlet guide vanes on VAV units

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Service valves

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Through-the-base electrical provision

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Factory mounted disconnect with

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external handle (non-fused) Integrated Comfort system control

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option Ventilation override

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Hinged service access

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Factory installed condenser

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coil guards

Features and Benefits 2

Model Number Description 9

General Data 10

Application Considerations 13

Selection Procedure 15

Performance Adjustment Factors

Performance Data 18

Electrical Data 30

Controls 32

Dimensional Data 35

Weights 38

Field Installed Sensors 39

Mechanical Specifications 42

Trane 3-D® Scroll Compressor

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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

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.

Features and Benefits

One of two matched scroll plates  the distinguishing feature of the scroll compressor.

Chart illustrates low torque variation of 3-D Scroll compressors reciprocating compressor.

Quality and Reliability

Features and Benefits

Forced Combustion Blower

Negative Pressure Gas Valve

Hot Surface Ignitor

Drum and Tube Heat Exchanger

Micro Controls

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 Micro provides unit control for

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heating, cooling and ventilating utilizing input from sensors that measure outdoor and indoor temperature.

The Micro improves quality and

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reliability through the use of timetested 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.

The Voyager with the Micro reduces

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the number of components required to operate the unit, thereby reducing possibilities for component failure.

Drum and Tube Heat Exchanger

The drum and tube heat exchanger is

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designed for increased efficiency and reliability and has utilized improved technology incorporated in the large roof top commercial units for almost 20 years.

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

/2 times this current standard. The

to 2 drum and tube design has been tested and passed over 150,000 cycles which is over 15 times the current ANSI cycling requirements.

*Apply to 60 HZ testing standards only.

The negative pressure gas valve will

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not allow gas flow unless the combustion blower is operating. This is one of our unique safety features.

The forced combustion blower supplies

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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 hot surface ignitor is a gas ignition

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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.

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.

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.

Features and Benefits

FC Fans with Inlet Guide Vanes

Tranes forward-curved fans with inlet

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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 performance.

Rigorous Testing

All of Voyagers designs were

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rigorously rain tested at the factory to ensure water integrity.

Actual shipping tests are performed to

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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

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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

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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

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final assembly. Sub-standard parts are identified and rejected immediately.

Every unit receives a 100% unit run test

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before leaving the production line to make sure it lives up to rigorous Trane requirements.

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

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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

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static capabilities. The need for high static motor conversion is minimized and time isnt spent changing to high static oversized motors.

Single Point Power

A single electrical connection powers the unit.

Micro

The function of the Micro replaces the

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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

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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.

Features and Benefits

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 Simpler Design

The Voyager design uses fewer parts than previous units. Since it is simpler in design, it is easier to diagnose.

Micro

The Micro requires no special tools to

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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.

 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

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system on LED is lit, the Micro is operational. The light indicates that the Micro is functioning properly.

The Micro features expanded

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diagnostic capabilities when utilized with Tranes Integrated Comfort Systems.

Some zone sensor options have central

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control panel lights which indicate the mode the unit is in and possible diagnostic information (dirty filters for example).

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Easy Access Low Voltage Terminal Board

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.

Power Exhaust Option

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

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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 Micro softens electrical spikes by

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staging on fans, compressors and heaters.

The Intelligent Fallback or Adaptive

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Control is a benefit to the building occupant. If a component goes astray, the unit will continue to operate at predetermined temperature setpoint.

Intelligent Anticipation is a standard

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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.

Features and Benefits

VariTrac

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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

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



system.

Model Number Description

TC D 400 A C 0 A 1 A 4 F D 1 A

1,2 3 4,5,6 7 8  9 10 11 12  13 14 15 16 17

Digits 1, 2  Unit Function

TC = DX Cooling, No Heat TE = DX Cooling, Electric Heat YC = DX Cooling, Natural Gas Heat

Digit 3  Unit Airflow Design

D = Downflow Configuration H = Horizontal Configuration

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 7  Major Development Sequence

A = First B = Second, Etc.

Digit 8  Power Supply (See Note 1) C = 380/50/3 D = 415/50/3

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.

380V / 415V A = 23 27 kW B = 34 40 kW C = 45 54 kW D = 56 67 kW E = 68 81 kW

Digit 10  Design Sequence

A = First

Digit 11  Exhaust

0 = None 1 = Barometric Relief

(Available w/Economizer only)

2 = Power Exhaust Fan

(Available w/Economizer only)

Digit 12  Filter

A = Standard 2 (51 mm) Throwaway Filters B = High Efficiency 2 (51 mm) Throwaway

Filters

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)

Digit 14  Supply Air Fan Drive Selections

(See Note 3) A = 458 H = 417 B = 500 J = 437 C = 541 K = 479 D = 583 L = 521 E = 625 M = 562 F = 658 N = 604 G = 664

Digit 15  Fresh Air Selection

A = No Fresh Air 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

F = C Option and Low Leak Fresh

Air Damper

G = D Option and Low Leak Fresh

Air Damper

H = E Option and Low Leak Fresh

Air Damper

Digit 16  System Control

1 = Constant Volume 2 = VAV Supply Air Temperature Control

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.

Digit 17+  Miscellaneous

A = Service Valves (See Note 2) B = Through the Base Electrical Provision C = Non-Fused Disconnect Switch with

External Handle

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

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.

General Data

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

Cooling Performance

Nominal Gross Capacity(Btuh) 279,000 (81.8 kW) 304,000 (89.1 kW) System Power kW 26.1 30.2 kW

Compressor

Number/Type 2/Scroll 2/Scroll Nominal Motor HP (ea) 8.4/12.5 11.7 Motor RPM 2875 2875

Natural Gas Heat

Heating Input(Btuh) 290,000 (85.0 kW) 500,000 (147 kW) 290,000 (85.0 kW) 500,000 (147 kW) First Stage 250,000 (73.3 kW) 425,000 (125 kW) 250,000 (73.3 kW) 425,000 (125 kW) Heating Output(Btuh) 243,000 (69.0 kW) 405,000 (119 kW) 243,000 (69.0 kW) 405,000 (119 kW) First Stage 202,500 (59.4 kW) 344,250 (101 kW) 202,500 (59.4 kW) 344,250 (101 kW) Steady State Efficiency(%) No. Burners/No. Stages 1/2 1/2 Gas Connect Pipe Size (in) 0.75 (19 mm) 0.75 (19 mm) Outdoor Coil - Type LANCED LANCED Tube Size OD (in) 0.375 (10 mm) 0.375 (10 mm) Face Area (sq ft) 51.3 (4.8 sq m) 51.3 (4.8 sq m) Rows/Fins Per Inch (25mm) 2/16 2/16 Indoor Coil - Type HI-PERFORM HI-PERFORM Tube Size OD (in) 0.500 (13 mm) 0.500(13 mm) Face Area (sq ft) 31.7 (2.9 sq m) 31.7 (2.9 sq m) Rows/Fins Per Inch (25mm) 2/14 2/14 Refrigerant Control TXV TXV PVC Drain Connect No./Size (in) 1/1.25 (1/32 mm) 1/1.25 (1/32 mm) Outdoor Fan Type PROP FAN PROP FAN No. Used 3 3 Diameter (in.) 28.0 (711 mm) 28.0 (711 mm) Drive Type/No. Speeds DIRECT/1 DIRECT/1 Cfm 20,450 (9650 L/s) 20,450 (9650 L/s) No. Motors (RPM) 3 (940) 3 (940) Motor HP 0.75 (0.56 kW) 0.75 (0.56 kW) Indoor Fan Type/No. Used FC/1 FC/1 Diameter (in) 22.4 (568 mm) 22.4 (568 mm) Width (in) 22.0 (559 mm) 22.0 (559 mm) Drive Type BELT BELT No. Speeds/No. Motors 1/1 1/1 Motor HP 7.5 (5.6 kW) 7.5 (5.6 kW) Motor RPM/Frame Size 1460/213T 1460/213T Filters - Type THROWAWAY THROWAWAY Furnished/No. Yes/16 Yes/16 Recommended Size (in) 16X 20 X2 (406X 508 X51mm) 16x20x2 (406X 508x51mm) Refrigerant Type R-22 R-22 Factory Charge (lbs)

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.

TC*275 (23 Tons) TC*305 (25 Tons)

Low High Low High

81 81

46 (21 kg) 46 (21 kg)

General Data

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

Cooling Performance

Nominal Gross Capacity(Btuh) 375,000 (105 kW) 409,000 (120 kW) System Power kW 34.0 42.5

Compressor

Number/Type 2/Scroll 3/Scroll Nominal Motor HP (ea) 12.5 2@11.7/8.4 Motor RPM 2875 2875

Natural Gas Heat

Heating Input (Btuh) 290,000 (85.0 kW) 500,000 (147 kW) 335,000 (98.2 kW) 670,000 (196 kW) First Stage 250,000 (73.3 kW) 425,000 (125 kW) 300,000 (87.9 kW) 600,000 (176 kW) Heating Output(Btuh) 243,000 (69.0 kW) 405,000 (119 kW) 271,350 (80.0 kW) 542,700 (159 kW) First Stage 202,500 (59.4 kW) 344,250 (101 kW) 243,500 (71.4 kW) 486,000 (166 kW) Steady State Efficiency(%) No. Burners/No. Stages 1/2 1/2 Gas Connect Pipe Size (in) 0.75 (19 mm) 0.75 (19 mm) Outdoor Coil - Type LANCED LANCED Tube Size OD (in) 0.375 (10 mm) 0.375 (10 mm) Face Area (sq ft) 51.3 (4.8 sq m) 69.8 (6.5 sq m) Rows/Fins Per Inch (25mm) 2/16 2/16 Indoor Coil - Type HI-PERFORM HI-PERFORM Tube Size (in) OD 0.500 (13 mm) 0.500 (13 mm) Face Area (sq ft) 31.7 (2.9 sq m) 37.5 (3.5 sq m) Rows/Fins Per Inch (25mm) 2/15 2/14 Refrigerant Control TXV TXV PVC Drain Connect No./Size (in) 1/1.25 (1/32 mm) 1/1.25 (1/32 mm) Outdoor Fan Type PROP FAN PROP FAN No. Used 3 4 Diameter (in.) 28.0 (711 mm) 28.0 (711 mm) Drive Type/No. Speeds DIRECT/1 DIRECT/1 Cfm 20,400 (9650 L/s) 26,200 (12,400 L/s) No. Motors (RPM) 3 (940) 4 (940) Motor HP 0.75 (0.56 kW) 0.75 (0.56 kW) Indoor Fan Type/No. Used FC/1 FC/1 Diameter (in) 22.4 (568 mm) 25.0 (635 mm) Width (in) 22.0 (559 mm) 25.0 (635 mm) Drive Type BELT BELT No. Speeds/No. Motors 1/1 1/1 Motor HP 7.5 (5.6 kW) 10.0 (7.5 kW) Motor RPM/Frame Size 1460/213T 1460/215T Filters - Type THROWAWAY THROWAWAY Furnished/No. Yes/16 Yes/17 Recommended Size (in) 16x20x2 (406x508x51mm) 16X 20 X2 (406X 508 X51mm) Refrigerant Type R-22 R-22 Factory Charge Ciruit #1 (lbs) Factory Charge Circuit # 2 (lbs)  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.

TC*350 (29 Tons) TC*400 (33 Tons)

Low High Low High

81 81

52 (24 kg) 24.5 (11.1 kg)

General Data

Table 12-1  General Data  43 Tons

Cooling Performance

Nominal Gross Capacity(Btuh) 505,000 (148 kW) System Power kW 52.9

Compressor

Number/Type 3/Scroll Nominal Motor HP (ea) 12.5 Motor RPM 2875

Natural Gas Heat

Heating Input(Btuh) 335,000 (98.2 kW) 670,000 (196 kW) First Stage 300,000 (87.9 kW) 600,000 (176 kW) Heating Output(Btuh) 271,350 (79.5 kW) 542,700 (159 kW) First Stage 243,500 (71.4 kW) 486,000 (166 kW) Steady State Efficiency(%) No. Burners/No. Stages 1/2 Gas Connect Pipe Size (in) 0.75 (19 mm) Outdoor Coil - Type LANCED Tube Size OD (in) 0.375 (10 mm) Face Area(sq ft) 69.8 (6.5 sq m) Rows/Fins Per Inch (25mm) 2/16 Indoor Coil - Type HI-PERFORM Tube Size OD (in) 0.500 (13 mm) Face Area (sq ft) 37.5 (3.5 sq m) Rows/Fins Per Inch (25mm) 3/13 Refrigerant Control TXV PVC Drain Connect No./Size (in) 1/1.25 (1/32 mm) Outdoor Fan Type PROP FAN No. Used 4 Diameter (in.) 28.0 (711 mm) Drive Type/No. Speeds DIRECT/1 Cfm 26,200 (12,400 L/s) No. Motors (RPM) 4 (940) Motor HP 0.75 (0.56 kW) Indoor Fan Type/No. Used FC/1 Diameter (in) 25.0 (635 mm) Width (in) 25.0 (635 mm) Drive Type BELT No. Speeds/No. Motors 1/1 Motor HP 10.0 (7.5 kW) Motor RPM/Frame Size 1460/215T Filters - Type THROWAWAY Furnished/No. Yes/17 Recommended Size (in) 16x20x2 (406x508x51mm) Refrigerant Type R-22 Factory Charge Circuit #1 (lbs) Factory Charge Circuit #1 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.

TC*500 (42Tons)

Low High

23.9 (10.8 kg)

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

∆P Across Dampers (In. WC) (Pa)

Standard 1.5% 2.5% Optional Low Leak 0.5% 1.0%

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

0.5 In. (124.5 Pa) 1.0 In. (249 Pa)

Application Considerations

Exhaust Air Options

When is it necessary to provide building exhaust?

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.

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.

Voyager offer two types of exhaust systems:

Power exhaust fan.

Barometric relief dampers.

Application Recommendations

Power Exhaust Fan

The exhaust fan option is a dual, nonmodulating 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 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 nonmodulating 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 underpressurized when economizer operation is allowing lesser amounts of outdoor air into the building. If, 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.



Commercial rooftop units

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.

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.

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.

The procedure to use when selecting a supply or exhaust fan on a rooftop for elevations and temperatures other than standard is as follows:

First, determine the air density ratio using Figure 17-1.

Divide the static pressure at the nonstandard condition by the air density ratio to obtain the corrected static pressure.

Use the actual cfm and the corrected static pressure to determine the fan rpm and bhp from the rooftop performance tables or curves.

The fan rpm is correct as selected.

Bhp must be multiplied by the air density ratio to obtain the actual operating bhp.

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).

From Figure 17-1, the air density ratio is 0.86.

Tsp = 1.50 inches/0.86 = 1.74 inches tsp. 374/.86 = 434 Pa.

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).

The rpm is correct as selected  651 rpm.

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.

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.

Application Considerations

Acoustical Considerations

Proper placement of rooftops is critical to reducing transmitted sound levels to the building. The ideal time to make provisions to reduce sound 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.

Several basic guidelines for unit placement should be followed to minimize sound transmission through the building structure:

Never cantilever the compressor end of the unit. A structural cross member must support this end of the unit.

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.

If several units are to be placed on one span, they should be staggered to reduce deflection over that span.

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 experienceproven guidelines which will help reduce sound transmissions.

Clearance Requirements

The recommended clearances 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?

Actual clearances which appear inadequate should be reviewed with a local Trane sales engineer.

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:

To reduce span deflection if more than one unit is placed on a single span. Reducing deflection discourages sound transmission.

To assure proper diffusion of exhaust air before contact with the outside air intake of adjacent unit.

Duct Design

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.

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.

Selection Procedure

Selection of Trane commercial air conditioners is divided into five basic areas:

Cooling capacity

Heating capacity

Air delivery

Unit electrical requirements

Unit designation

Factors Used In Unit Cooling Selection: 1

Summer design conditions  95 DB/ 76 WB (35/24.4°C), 95°F (35°C) entering air to condenser.

Summer room design conditions  76 DB/66 WB (24.4/18.9°C).

Total peak cooling load  270 MBh (79 kW) (22.5 tons).

Total peak supply cfm  10,000 cfm (4720 l/s).

External static pressure  1.0 inches wc (249 Pa).

Return air temperatures  80 DB/66°F WB (26.7/18.9°C).

Return air cfm  3540 cfm (1671 l/s).

Outside air ventilation cfm and load  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.

2 Hi-efficiency throwaway filters.

Exhaust fan.

Economizer cycle.

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 condenser and 10,000 total peak supply cfm (4720 l/s), is YC/TC/TE*305.

Step 2  Having selected the correct unit, the supply fan and exhaust fan motor bhp must be determined.

Supply Air Fan:

Determine unit static pressure at design supply cfm: External static pressure 1.25 inches

(310 Pa) Heat exchanger (Table 28-1) .12 inches

(30 Pa) High efficiency filter 2 (25 mm) (Table 28-1) .07 inches

(17 Pa) Economizer (Table 28-1) .07 inches

(17 Pa) Unit total static pressure 1.50 inches

(374 Pa)

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.

Step 3  Determine evaporator coil entering air conditions. Mixed air dry bulb temperature determination.

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).

Approximate wet bulb mixture temperature:

RAWB + OA (OAWB - RAWB) = 66 + (0.10) (76-66) = 68 + 1 = 67°F.

A psychrometric chart can be used to more accurately determine the mixture temperature to the evaporator coil.

Step 4  Determine total required unit cooling capacity: Required capacity = total peak load + O.A. load + supply air fan motor heat.

From Figure 16-1, the supply air fan motor heat for 5.85 bhp = 15 MBh.

Capacity = 270 + 15 + 15 = 300 MBh (89 kW)

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 6  Determine leaving air temperature: Unit sensible heat capacity, corrected for supply air fan motor heat 241 - 15 = 226 MBh (66.2 kW).

Supply air dry bulb temperature difference = 226 MBh ÷ (1.085 x 10,000 cfm) = 20.8°F (-6.2°C)

Supply air dry bulb: 81.5-20.8 = 60.7 (15.9°C)

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.

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).

Selection Procedure

Winter outdoor design conditions  0°F (17.7°C).

Total return air temperature  72°F (22.2°C).

Winter outside air minimum ventilation load and cfm  1,000 cfm and

87.2 MBh.

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.

Electric Heating System

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.

Table 23-1 also shows an air temperature rise of 21.2°F for 10,000 cfm through the 90 kW heat module.

Unit supply temperature at design heating conditions = mixed air temperature + air temperature rise =

65.38 + 21.2 = 86.58°F.

Natural Gas Heating System

Assume natural gas supply  1000

Btu/ft

. From Table 23-4, select the low heat module (243 MBh output) to satisfy 222 at unit cfm.

Table 23-4 also shows air temperature rise of 37.3°F for 10,000 cfm through heating module.

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 components such as heating systems, and filters if used, must be added to external unit static pressure for total static pressure determination.

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.

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.

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.

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.

Chart 16-1  Fan Motor Heat

Performance Adjustment Factors

Wet Bulb Temperature

°F °C Btu Per Lb. 40 4.4 15.23 41 5.0 15.70 42 5.5 16.17 43 6.1 16.66 44 6.7 17.15 45 7.2 17.65 46 7.8 18.16 47 8.3 18.68 48 8.9 19.21 49 9.4 19.75 50 10.0 20.30 51 10.6 20.86 52 11.1 21.44 53 11.7 22.02 54 12.2 22.62 55 12.8 23.22 56 13.3 23.84 57 13.9 24.48 58 14.4 25.12 59 15.0 25.78 60 15.6 26.46 61 16.1 27.15 62 16.7 27.85 63 17.2 28.57 64 17.8 29.31 65 18.3 30.06 66 18.9 30.83 67 19.4 31.62 68 20.0 32.42 69 20.6 33.25 70 21.1 34.09 71 21.7 34.95 72 22.2 35.83 73 22.8 36.74 74 23.3 37.66 75 23.9 38.61

Figure 17-1  Air Density RatiosTable 17-1  Enthalpy of Saturated Air

Table 17-2  Cooling Capacity Altitude Correction Factors

Cooling Capacity Multiplier 1.00 0.99 0.99 0.98 0.97 0.96 0.95 0.94 KW Correction Multiplier (Compressors) 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 SHR Correction Multiplier 1.00 .98 .95 .93 .91 .89 .87 .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

Sea Level 1000 (304.8) 2000 (609.6) 3000 (914.4) 4000 (1219.2) 5000 (1524.0) 6000 (1828.8) 7000 (2133.6)

Altitude ft. (m)

Table 17-3  Gas Heating Capacity Altitude Correction Factors

Sea Level To 2000 200 To 2500 2501 To 3500 3501 To 4500 4501 To 5500 5501 To 6500 6501 To 7500

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

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

(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)

Altitude ft. (m)

Performance Data

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

Ent Entering Wet Bulb Temperature  Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73

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

75 249 197 277 160 307 111 238 191 264 154 294 105 226 184 251 148 280 99 213 177 238 141 265 93

6900 80 251 232 278 190 308 147 240 226 265 183 295 141 229 219 252 177 280 135 216 212 239 170 266 128

85 258 258 279 224 309 182 249 249 267 217 295 176 238 238 254 211 281 169 228 228 240 204 267 162 90 273 273 281 259 310 215 263 263 269 252 297 209 252 252 257 246 283 202 241 241 244 239 268 196 75 253 205 281 166 312 113 242 199 268 160 298 107 229 192 255 154 283 101 216 185 241 147 268 94

7500 80 256 243 282 197 313 151 245 237 270 191 299 145 233 230 256 184 284 139 220 220 242 177 269 132

85 266 266 283 234 313 188 256 256 271 227 300 182 245 245 258 220 285 175 234 234 244 214 270 169 90 281 281 287 271 315 225 270 270 275 265 301 218 259 259 262 258 287 211 248 248 248 248 272 205 75 256 212 284 170 315 114 244 205 271 164 301 108 232 198 257 157 286 102 219 191 243 150 271 96

8000 80 260 252 285 203 316 155 248 245 273 196 302 149 236 236 259 190 287 142 224 224 245 182 272 136

85 271 271 287 242 317 194 261 261 274 235 303 187 250 250 261 228 288 181 239 239 247 221 273 174 90 287 287 291 282 318 232 276 276 279 275 304 225 265 265 265 265 290 219 253 253 253 253 275 212 75 262 224 290 172 321 117 250 217 276 166 306 111 237 210 262 158 291 105 224 203 248 151 275 98

9000 80 266 266 291 214 322 162 255 255 278 208 307 155 244 244 264 201 292 149 232 232 249 194 277 142

85 282 282 293 257 323 204 271 271 280 251 309 197 259 259 267 244 294 193 247 247 252 237 278 184 90 298 298 297 297 324 246 286 286 286 286 310 240 275 275 275 275 295 233 262 262 262 262 280 226 75 266 236 294 180 326 120 254 229 281 173 311 113 241 222 266 167 295 107 228 215 251 158 279 100

10000 80 274 274 296 225 327 168 263 263 282 218 312 162 251 251 268 211 296 155 239 239 253 204 280 148

85 290 290 299 272 328 214 279 279 285 266 313 207 267 267 272 259 298 200 255 255 257 252 282 193 90 307 307 307 307 330 260 295 295 295 295 315 253 283 283 283 283 300 247 270 270 270 270 284 240

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.

85 95 105 115

Ambient Temperature  Deg F

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

Ent Entering Wet Bulb Temperature  Deg C DB 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8

L/s (C) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

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.

29.4 35.0 40.6 46.1

Ambient Temperature  Deg C

Performance Data

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

Ent Entering Wet Bulb Temperature  Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73

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

75 273 215 303 175 336 122 260 208 289 168 321 115 247 200 275 161 305 108 233 193 260 155 289 102

7500 80 275 252 304 207 337 160 263 245 290 200 322 154 250 238 276 192 306 147 237 231 261 185 290 140

85 282 282 305 243 338 198 271 271 291 236 323 191 260 260 277 229 307 184 248 248 263 221 291 177 90 297 297 308 281 339 234 286 286 294 273 324 227 275 275 280 266 308 220 263 263 266 259 293 212 75 276 221 307 174 340 123 263 214 293 167 325 117 250 207 278 160 309 110 236 199 263 153 292 103

8000 80 279 261 308 213 341 164 266 254 294 205 325 157 254 247 279 198 310 150 241 239 264 191 293 143

85 288 288 309 251 341 203 277 277 295 244 326 196 266 266 281 237 310 189 254 254 266 229 294 182 90 304 304 312 291 343 242 293 293 298 284 328 234 281 281 285 277 312 227 269 269 271 269 296 220 75 282 234 313 182 347 126 269 227 298 175 331 119 256 219 283 167 314 113 242 211 268 160 297 106

9000 80 286 278 314 224 348 171 274 271 300 217 332 164 260 260 285 209 315 157 248 248 269 202 299 150

85 299 299 316 267 349 214 288 288 301 260 333 208 276 276 287 252 317 201 263 263 272 245 300 194 90 316 316 320 311 350 256 304 304 306 304 334 249 292 292 291 291 318 241 279 279 279 279 301 234 75 288 246 318 189 352 129 274 239 303 182 336 122 260 231 288 175 319 115 246 223 272 166 301 108

10000 80 292 292 320 235 353 177 280 280 305 228 337 170 268 268 289 220 320 163 255 255 274 212 303 156

85 309 309 322 282 354 224 297 297 307 275 338 216 284 284 292 267 321 211 271 271 277 260 304 202 90 326 326 326 326 356 270 314 314 314 314 340 263 301 301 301 301 323 255 288 288 287 287 306 248 75 292 258 323 196 357 131 279 250 307 189 340 124 264 242 292 182 323 117 250 235 276 175 305 110

11000 80 300 300 324 246 358 184 287 287 309 238 341 177 275 275 293 230 324 169 262 262 277 223 307 162

85 317 317 327 297 359 233 305 305 312 289 343 226 292 292 297 282 326 219 278 278 282 274 308 211 90 336 336 336 336 361 283 323 323 323 323 344 276 309 309 309 309 328 268 295 295 295 295 310 261

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.

85 95 105 115

Ambient Temperature  Deg F

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

Ent Entering Wet Bulb Temperature  Deg C DB 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8

L/s (C) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

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.

29.4 35.0 40.6 46.1

Ambient Temperature  Deg C

Performance Data

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

Ent Entering Wet Bulb Temperature  Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73

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

75 322 264 356 207 394 143 307 256 340 200 376 135 292 248 324 192 358 128 276 239 306 184 339 120

8750 81 327 324 357 262 395 202 313 313 341 255 378 195 299 299 325 246 359 187 285 285 308 238 341 179

87 347 347 360 320 396 260 334 334 345 312 379 252 321 321 329 304 360 244 306 306 312 296 342 236 93 369 369 369 369 398 317 356 356 356 356 381 309 342 342 342 342 363 301 327 327 327 327 345 292 75 323 268 358 207 396 143 309 260 342 200 378 136 294 252 325 192 360 128 277 243 307 187 341 121

9000 81 330 330 359 266 397 204 315 315 343 258 379 197 302 302 326 250 361 189 288 288 309 242 342 181

87 350 350 362 325 398 263 337 337 347 318 380 255 324 324 331 310 362 247 309 309 314 301 343 239 93 373 373 373 373 400 322 359 359 359 359 383 314 345 345 345 345 365 306 330 330 330 330 346 297 75 330 283 364 216 402 146 315 275 347 208 384 139 299 266 330 201 365 131 283 258 312 192 345 123

10000 81 339 339 365 280 403 213 326 326 349 272 385 205 312 312 332 264 366 198 297 297 314 256 347 190

87 362 362 370 346 405 277 348 348 354 338 387 269 334 334 338 330 368 261 319 319 319 319 349 253 93 386 386 386 386 408 342 372 372 372 372 390 334 357 357 357 357 371 325 341 341 341 341 352 317 75 335 297 369 225 407 149 320 289 352 217 388 141 304 281 335 209 369 134 287 272 316 201 349 126

11000 81 348 348 371 294 409 222 335 335 354 286 390 214 320 320 337 278 371 206 305 305 319 269 351 198

87 372 372 377 366 410 291 358 358 361 358 392 283 344 344 343 343 373 275 328 328 328 328 353 266 93 398 398 397 397 414 361 383 383 383 383 396 353 367 367 367 367 377 345 351 351 351 351 358 336 75 340 311 373 233 411 151 325 303 356 225 392 144 309 295 338 217 373 136 292 286 320 209 353 129

12000 81 357 357 376 308 413 230 343 343 359 300 395 222 328 328 341 291 375 214 312 312 323 283 355 206

87 382 382 382 382 415 304 367 367 367 367 397 296 352 352 352 352 377 288 336 336 336 336 357 279 93 408 408 408 408 420 380 393 393 393 393 402 372 376 376 376 376 383 364 360 360 360 360 363 356

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.

85 95 105 115

Ambient Temperature  Deg F

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

Ent Entering Wet Bulb Temperature  Deg C DB 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8

L/s (C) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

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.

29.4 35.0 40.6 46.1

Ambient Temperature  Deg C

Performance Data

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

Ent Entering Wet Bulb Temperature  Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73

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

75 365 283 407 231 453 161 347 273 387 221 431 151 328 261 367 211 409 141 309 250 346 200 386 131

10000 80 368 333 408 274 454 213 350 322 389 263 432 203 332 311 368 252 410 192 313 300 348 241 388 181

85 377 377 410 322 455 263 360 360 390 311 433 252 344 344 370 300 411 241 328 328 350 289 389 230 90 397 397 413 371 457 311 381 381 394 361 435 300 365 365 375 350 414 289 347 347 355 338 391 278 75 372 296 414 233 461 164 354 285 394 222 439 154 334 274 373 211 416 144 315 263 351 200 392 134

11000 80 376 351 416 286 462 220 358 340 396 275 440 210 334 334 375 263 417 199 318 318 354 252 394 188

85 388 388 418 338 463 274 372 372 398 327 441 263 356 356 377 316 418 252 338 338 356 304 395 240 90 411 411 422 392 465 326 394 394 403 381 443 315 377 377 377 377 421 303 359 359 359 359 398 292 75 378 309 421 241 467 167 359 298 399 230 445 157 340 286 378 218 421 147 320 275 356 207 397 136

12000 80 384 367 423 297 468 227 361 361 402 286 446 216 344 344 381 274 423 205 328 326 359 263 399 194

85 400 400 425 354 470 284 383 383 405 342 448 273 366 366 384 331 425 262 348 348 362 320 401 250 90 423 423 431 412 472 340 406 406 405 405 450 329 388 388 388 388 427 317 370 370 371 368 403 306 75 384 321 426 248 473 170 365 310 405 237 450 160 345 298 383 225 426 149 325 286 361 214 402 138

13000 80 386 386 429 308 474 233 370 370 408 297 452 223 354 352 386 285 428 212 335 335 364 273 404 201

85 410 410 431 368 476 294 393 393 411 357 453 283 375 375 389 346 430 271 357 357 368 334 406 260 90 434 434 433 433 478 354 416 416 416 416 456 342 398 398 399 398 432 331 379 379 379 379 408 319 75 392 339 434 275 481 175 372 328 412 264 457 164 352 316 390 253 433 153 331 304 367 241 408 144

14600 80 402 400 437 325 482 243 382 382 415 313 459 232 364 364 393 302 435 221 346 346 370 290 409 210

85 424 424 440 392 484 309 406 406 419 380 461 298 388 388 398 369 437 286 369 369 375 357 412 275 90 449 449 451 450 487 375 431 431 431 431 463 363 412 412 411 411 440 352 392 392 392 392 415 340

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.

85 95 105 115

Ambient Temperature  Deg F

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

Ent Entering Wet Bulb Temperature  Deg C DB 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8

L/s (C) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

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.

29.4 35.0 40.6 46.1

Ambient Temperature  Deg C

Performance Data

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

Ent Entering Wet Bulb Temperature  Deg F DB 61 67 73 61 67 73 61 67 73 61 67 73

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

75 455 365 505 292 559 200 433 353 481 277 533 188 411 340 456 260 505 176 387 326 430 247 477 164

12500 80 461 433 506 351 560 268 440 420 482 338 534 256 418 407 458 325 507 243 394 394 432 312 479 231

85 476 476 509 416 561 334 457 457 486 403 536 322 437 437 461 390 508 309 416 416 435 377 480 296 90 502 502 515 482 563 398 483 483 492 470 537 386 462 462 468 457 510 373 440 440 440 440 482 360 75 462 379 512 293 566 203 440 367 487 281 539 191 417 353 462 268 511 179 392 340 435 255 482 167

13500 80 469 451 513 363 567 275 448 439 489 350 540 263 422 422 464 337 513 250 401 401 437 324 484 238

85 488 488 516 433 569 346 469 469 493 420 542 333 448 448 468 407 514 321 426 426 442 394 486 308 90 515 515 524 504 570 414 495 495 501 492 544 402 474 474 473 473 516 389 451 451 451 451 488 375 75 468 393 517 301 572 205 446 380 493 289 545 194 422 367 467 276 516 182 398 353 440 263 487 169

14500 80 477 470 519 375 573 282 452 452 494 362 546 270 431 431 469 349 518 257 410 410 442 336 489 244

85 499 499 523 450 575 357 479 479 499 437 548 345 458 458 474 424 519 331 435 435 447 410 490 318 90 527 527 532 526 577 430 506 506 506 506 550 417 484 484 484 484 522 404 461 461 461 461 493 390 75 474 406 523 309 577 208 451 393 498 297 550 196 427 380 471 284 521 184 402 366 444 271 491 171

15500 80 481 481 524 387 579 289 461 461 499 374 551 276 440 440 473 361 522 264 417 417 446 347 493 251

85 509 509 529 466 580 368 488 488 505 453 552 355 467 467 479 440 524 342 444 444 453 426 494 328 90 537 537 537 537 583 445 516 516 516 516 556 432 494 494 493 493 527 419 470 470 470 470 498 405 75 479 419 527 317 582 211 456 406 502 304 554 199 432 393 475 292 525 186 407 379 447 277 494 174

16500 80 489 489 529 399 583 295 469 469 504 386 556 283 447 447 478 373 527 270 425 425 450 359 496 258

85 518 518 535 482 585 378 497 497 510 469 557 365 475 475 485 456 528 352 451 451 458 442 498 339 90 547 547 547 547 588 460 525 525 525 525 561 447 502 502 502 502 532 434 478 478 478 478 503 420

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.

85 95 105 115

Ambient Temperature  Deg F

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

Ent Entering Wet Bulb Temperature  Deg C DB 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8 16.1 19.4 22.8

L/s (C) TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC TGC SHC

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.

29.4 35.0 40.6 46.1

Ambient Temperature  Deg C

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 92 12.1 10.6 9.4 8.5 7.7 7.1 

40.4 138 18.2 15.9 14.1 12.7 11.6 10.6 9.8 9.1 8.5 7.9 7.5

53.8 184 24.2 21.2 18.8 16.9 15.4 14.1 13.0 12.1 11.3 10.6 10.0

67.3 230 30.2 26.5 23.5 21.2 19.2 17.6 16.3 15.1 14.1 13.2 12.5

80.7 276    25.4 23.1 21.2 19.5 18.1 16.9 15.9 14.9

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 4250 4720 5190 5660 6140 6610 7080 7550 8020

26.9 6.8 5.9 5.3 4.7 4.3 4.0     

40.4 10.2 8.9 7.9 7.1 6.5 5.9 5.5 5.1 4.8 4.5 4.2

53.8 13.6 11.9 10.5 9.5 8.6 7.9 7.3 6.8 6.3 5.9 5.6

67.3 17.0 14.8 13.2 11.9 10.8 9.9 9.1 8.5 7.9 7.4 7.0

80.7    14.2 13.0 11.9 11.0 10.2 9.5 8.9 8.4

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 Nominal Voltage (v) Unit Size

Tons 380 415

22.9 23-56 27-67

25.0 23-56 27-67

29.2 23-56 27-67

33.3 34-68 40-81

42.7 34-68 40-81

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

Tons Unit Model No. (See Note 1) (See Note 1) F (C)

22.9-29.2 YCD/YCH300**L 290,000 (85) 243,000 (69) 10-40 (-12.2 , 4.4)

22.9-29.2 YCD/YCH300**H 500,000 (147) 405,000 (119) 25-55 (-3.9 , 12.8)

33.3-42.7

Note:

1. Total heating capacity.

YCD/YCH275**L

YCD/YCH350**L YCD/YCH275**H

YCD/YCH350**H YCD/YCH400**L YCD/YCH500**L 335,000 (98) 271,350 (80) 5-35 (-15 , 1.6) YCD/YCH400**H YCD/YCH500**H 670,000 (196) 542,700 (159) 20-50 (-6.7 , 10)

Heat Input MBh (KW) Heating Output MBh (KW) Air Temp. Rise,

Performance Data

Table 24-1  Supply Fan Performance  23-29 Ton English

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

6670. 307. 0.92 371. 1.30 431. 1.75 490. 2.29 544. 2.86 593. 3.46 639. 4.08 681. 4.71 720. 5.36

7085. 317. 1.05 380. 1.46 436. 1.90 493. 2.44 546. 3.03 595. 3.65 640. 4.30 683. 4.96 722. 5.63

7500. 328. 1.20 390. 1.63 442. 2.07 496. 2.61 548. 3.21 597. 3.85 642. 4.52 684. 5.21 724. 5.91

7915. 339. 1.36 399. 1.81 449. 2.26 500. 2.80 551. 3.41 599. 4.06 644. 4.75 686. 5.46 726. 6.18

8330. 350. 1.53 408. 2.00 458. 2.48 505. 3.00 554. 3.62 601. 4.29 646. 4.99 687. 5.72 727. 6.47

8745. 361. 1.72 417. 2.21 467. 2.72 511. 3.23 558. 3.85 604. 4.53 648. 5.24 689. 5.99 729. 6.76

9160. 372. 1.92 427. 2.44 477. 2.98 519. 3.49 563. 4.10 608. 4.78 651. 5.51 691. 6.27 731. 7.06

9575. 384. 2.14 437. 2.68 486. 3.24 528. 3.79 569. 4.37 611. 5.05 654. 5.80 694. 6.57 733. 7.37

9990. 395. 2.38 448. 2.95 495. 3.52 537. 4.11 575. 4.68 616. 5.35 657. 6.10 697. 6.89 735. 7.70

10405. 407. 2.65 459. 3.24 504. 3.82 547. 4.45 583. 5.02 622. 5.68 661. 6.42 700. 7.22 738. 8.05

10820. 419. 2.94 470. 3.54 514. 4.14 556. 4.79 593. 5.40 628. 6.04 666. 6.77 704. 7.57 741. 8.42

11235. 432. 3.25 481. 3.87 524. 4.49 565. 5.15 602. 5.81 636. 6.43 671. 7.15 708. 7.95 744. 8.80

11650. 444. 3.59 492. 4.21 534. 4.86 574. 5.53 612. 6.23 645. 6.87 678. 7.57 713. 8.36 748. 9.21

12065. 457. 3.94 503. 4.57 544. 5.26 583. 5.93 621. 6.67 654. 7.35 685. 8.02 719. 8.80 753. 9.64

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.

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25

Static Pressure (in. wg)

Table 24-2  Supply Fan Performance  82-105 KW Metric

(L/s) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

3148. 307. 0.68 371. 0.97 431. 1.31 490. 1.70 544. 2.13 593. 2.58 639. 3.04 681. 3.51 720. 4.00

3344. 317. 0.78 380. 1.09 436. 1.42 493. 1.82 546. 2.26 595. 2.72 640. 3.20 683. 3.70 722. 4.20

3539. 328. 0.89 390. 1.22 442. 1.54 496. 1.95 548. 2.40 597. 2.87 642. 3.37 684. 3.88 724. 4.40

3735. 339. 1.01 399. 1.35 449. 1.68 500. 2.09 551. 2.54 599. 3.03 644. 3.54 686. 4.07 726. 4.61

3931. 350. 1.14 408. 1.49 458. 1.85 505. 2.24 554. 2.70 601. 3.20 646. 3.72 687. 4.26 727. 4.82

4127. 361. 1.28 417. 1.64 467. 2.03 511. 2.41 558. 2.87 604. 3.38 648. 3.91 689. 4.46 729. 5.04

4323. 372. 1.43 427. 1.82 477. 2.22 519. 2.60 563. 3.06 608. 3.57 651. 4.11 691. 4.68 731. 5.26

4519. 384. 1.59 437. 2.00 486. 2.42 528. 2.82 569. 3.26 611. 3.77 654. 4.32 694. 4.90 733. 5.50

4715. 395. 1.77 448. 2.20 495. 2.63 537. 3.06 575. 3.49 616. 3.99 657. 4.55 697. 5.13 735. 5.74

4910. 407. 1.97 459. 2.41 504. 2.85 547. 3.32 583. 3.74 622. 4.23 661. 4.79 700. 5.39 738. 6.00

5106. 419. 2.19 470. 2.64 514. 3.09 556. 3.58 593. 4.03 628. 4.50 666. 5.05 704. 5.65 741. 6.28

5302. 432. 2.42 481. 2.88 524. 3.35 565. 3.84 602. 4.33 636. 4.79 671. 5.33 708. 5.93 744. 6.56

5498. 444. 2.67 492. 3.14 534. 3.62 574. 4.12 612. 4.65 645. 5.13 678. 5.64 713. 6.23 748. 6.87

5694. 457. 2.94 503. 3.41 544. 3.92 583. 4.42 621. 4.97 654. 5.48 685. 5.98 719. 6.56 753. 7.19

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).

62.9 124.1 186.2 248.3 310.4 372.5 434.6 496.7 558.8

Static Pressure (Pascals)

Figure 25-1

Performance Data

Table 26-1  Supply Fan Performance  33 and 42 Ton English

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

9996. 309. 1.80 360. 2.34 404. 2.88 447. 3.48 487. 4.10 525. 4.75 562. 5.41 597. 6.07 630. 6.75 662. 7.47

10829. 326. 2.19 374. 2.76 416. 3.35 458. 3.97 496. 4.62 532. 5.30 567. 6.01 602. 6.72 634. 7.44 666. 8.16

11662. 344. 2.64 388. 3.24 430. 3.88 468. 4.53 506. 5.21 541. 5.92 574. 6.65 607. 7.41 639. 8.18 670. 8.95

12495. 362. 3.15 403. 3.79 445. 4.48 480. 5.15 517. 5.86 551. 6.60 583. 7.37 614. 8.16 645. 8.97 675. 9.78

13328. 381. 3.72 420. 4.41 459. 5.12 494. 5.85 527. 6.58 562. 7.35 593. 8.15 623. 8.97 652. 9.81 681. 10.68

14161. 399. 4.37 437. 5.11 473. 5.84 509. 6.63 539. 7.39 572. 8.18 604. 9.01 633. 9.86 661. 10.73 688. 11.62

14994. 418. 5.09 454. 5.87 488. 6.64 524. 7.47 554. 8.28 583. 9.10 614. 9.95 643. 10.83 671. 11.73 698. 12.65

15827. 437. 5.89 472. 6.72 504. 7.53 537. 8.37 569. 9.26 596. 10.11 625. 10.98 654. 11.88 681. 12.81 708. 13.77

16660. 457. 6.79 490. 7.65 521. 8.51 551. 9.36 584. 10.31 611. 11.21 637. 12.11 664. 13.04 692. 13.99 718. 14.97

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).

0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50

Static Pressure (in. wg)

Table 26-2  Supply Fan Performance  105-148 KW Metric

(L/s) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)

4717. 309. 1.34 360. 1.74 404. 2.15 447. 2.59 487. 3.06 525. 3.54 562. 4.03 597. 4.53 630. 5.03 662. 5.57

5111. 326. 1.63 374. 2.06 416. 2.50 458. 2.96 496. 3.45 532. 3.96 567. 4.48 602. 5.01 634. 5.54 666. 6.09

5504. 344. 1.97 388. 2.41 430. 2.90 468. 3.37 506. 3.88 541. 4.41 574. 4.96 607. 5.53 639. 6.10 670. 6.67

5897. 362. 2.35 403. 2.82 445. 3.34 480. 3.84 517. 4.37 551. 4.92 583. 5.49 614. 6.08 645. 6.69 675. 7.30

6290. 381. 2.77 420. 3.29 459. 3.82 494. 4.37 527. 4.91 562. 5.48 593. 6.08 623. 6.69 652. 7.32 681. 7.96

6683. 399. 3.26 437. 3.81 473. 4.35 509. 4.95 539. 5.51 572. 6.10 604. 6.72 633. 7.35 661. 8.00 688. 8.67

7076. 418. 3.80 454. 4.38 488. 4.95 524. 5.57 554. 6.18 583. 6.79 614. 7.42 643. 8.07 671. 8.75 698. 9.44

7469. 437. 4.40 472. 5.01 504. 5.62 537. 6.24 569. 6.91 596. 7.54 625. 8.19 654. 8.86 681. 9.55 708. 10.27

7862. 457. 5.06 490. 5.71 521. 6.35 551. 6.98 584. 7.68 611. 8.36 637. 9.03 664. 9.72 692. 10.43 718. 11.17

Notes:

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)

62.1 124,2 186.3 248.1 310.4 372.5 434.6 496.7 558.8 620.9

Static Pressure (Pascals)

Figure 27-1

Performance Data

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

Nominal CFM Gas Heat Electric Heat ID Coil High Eff. Filters Inlet Guide

Std.Tons (kW) Std Air Low High 1 Element 2 Element Adder 2 4 Vanes Economizer

23 (80) 8330 0.10 0.08 0.07 0.08 0 0.05 0.04 0.07 0.049

25 (88) 9170 0.13 0.10 0.08 0.09 0 0.06 0.05 0.08 0.059

29 (103) 9580 0.14 0.11 0.09 0.10 0.10 0.07 0.06 0.11 0.065

33 (118) 12500 0.01 0.04 0.11 0.17 0 0.12 0.09 0.05 0.096

42 (146) 14200 0.02 0.06 0.16 0.24 0.10 0.17 0.12 0.07 0.120

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

6670 0.07 0.05 0.04 0.05 0 0.03 0.02 0.04 0.331 7500 0.08 0.07 0.06 0.06 0 0.04 0.03 0.06 0.040

9170 0.13 0.10 0.08 0.09 0 0.06 0.05 0.08 0.059

10000 0.15 0.12 0.10 0.11 0 0.07 0.05 0.10 0.070

7500 0.08 0.07 0.06 0.06 0 0.04 0.03 0.06 0.040 8330 0.10 0.08 0.07 0.08 0 0.05 0.04 0.07 0.049

10000 0.15 0.12 0.10 0.11 0 0.07 0.06 0.12 0.070

8750 0.11 0.09 0.08 0.08 0.09 0.06 0.04 0.08 0.054

11200 0.19 0.15 0.13 0.14 0.13 0.09 0.07 0.13 0.077 12100 0.22 0.17 0.15 0.16 0.15 0.11 0.08 0.15 0.091 10000 0.01 0.03 0.07 0.11 0 0.07 0.05 0.03 0070 10800 0.01 0.03 0.08 0.13 0 0.09 0.06 0.04 0.076 11700 0.01 0.04 0.10 0.15 0 0.10 0.07 0.04 0.085

13300 0.02 0.05 0.12 0.19 0 0.13 0.10 0.06 0.107 14200 0.02 0.06 0.14 0.22 0 0.15 0.11 0.07 0.120 12500 0.01 0.04 0.11 0.17 0.08 0.12 0.09 0.05 0.095 13300 0.02 0.05 0.12 0.19 0.08 0.13 0.10 0.06 0.108

15800 0.02 0.07 0.18 0.27 0.11 0.19 0.14 0.08 0.136 16700 0.03 0.08 0.20 0.30 0.12 0.21 0.15 0.09 0.155

Heating System Filters

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

Nominal L/s Gas Heat Electric Heat ID Coil High Eff. Filters Inlet Guide

Std.kW (Tons) Std Air Low High 1 Element 2 Element Adder 50 mm 100 mm Vanes Economizer

80 (23) 3930 26 20 17 19 0 13 9 17 0.08

88 (25) 4320 31 24 21 23 0 16 11 25 0.12

103 (29) 4920 41 32 27 29 29 20 15 27 0.13

118 (33) 5900 4 11 27 42 0 29 21 13 0.18

146 (42) 6680 5 14 35 54 23 38 27 16 0.24

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

3150 17 13 11 12 0 8 6 11 0.05 3540 21 16 14 15 0 11 8 14 0.07

4320 31 24 21 23 0 16 11 21 0.10 4720 37 29 25 27 0 19 14 25 0.12 3540 21 16 14 15 0 11 8 14 0.07 3930 26 20 17 19 0 13 9 17 0.08

5120 44 34 29 32 0 22 16 29 0.14 4130 29 22 19 21 22 14 10 19 0.09 4520 34 27 23 25 26 17 12 23 0.11

5310 47 37 32 34 33 24 17 32 0.15 4720 2 7 18 27 0 19 14 8 0.12 5120 3 8 21 32 0 22 16 10 0.14 5510 3 10 24 37 0 25 18 11 0.16

6290 4 12 31 48 0 33 24 15 0.21 6680 5 14 35 54 0 38 27 16 0.24 5900 4 11 27 42 19 29 21 13 0.18 6290 4 12 31 48 21 33 24 15 0.21

7070 5 16 39 60 25 42 31 18 0.27 7470 6 18 44 67 27 47 34 21 0.30

Heating System Filters

Performance Data

Table 29-1  Supply Air Fan Drive Selections

Nominal Drive Drive Drive Drive

Tons (kW) RPM No RPM No RPM No RPM No

23 (80) 541 C

25 (88) 541 C

29 (103) 583 583 D

33 (118) 521 521 L

42 (146) 521 521 L

Note:

*For YC gas/electrics only.

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

Table 29-2  Power Exhaust Fan

Exhaust High Med Low

Airflow Speed Speed Speed

(Cfm) ESP ESP ESP

1000 0.800   1500 0.780   2000 0.750  0.400 2500 0.720  0.380 3000 0.680  0.370 3500 0.650 0.420 0.360 4000 0.610 0.380 0.340 4500 0.560 0.360 0.320 5000 0.520 0.330 0.300 5500 0.460 0.310 0.280 6000 0.420 0.290 0.250 6500 0.360 0.270 0.230 7000 0.310 0.240 0.190 7500 0.250 0.200 0.150 8000 0.200 0.160 0.120 8500 0.150 0.120 0.070 9000 0.100 0.060 0.000 9500 0.040 0.000 

10000  0.000  

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.

5 HP 7.5 HP 10 HP 15 HP

458 A 500 B

583 583 D 625  625* E 458 A 500 B

583 583 D 625 625 E 500 B 541 541 C

658 658** F 664 664* G 417 417 H 437 437 J 479 479 K

562 562 M 604 604 N 437 437 J 479 479 K

562 562 M 604 604 N

Table 29-3  Power Exhaust Fan

Performance - 50 Hz English

External Static Pressure

 Inches of Water

Exhaust High Med Low

Airflow Speed Speed Speed

(L/s) ESP ESP ESP



 470 199.3  

710 194.3  



940 186.8  99.6

1180 179.4  94.7



1420 169.4  92.2



1650 161.9 104.6 89.7 1890 152.0 94.7 84.7 2120 139.5 89.7 79.7



2360 129.5 82.2 74.7 2600 114.6 77.2 69.7



2830 104.6 72.2 62.3 3070 89.7 67.3 57.3 3300 77.2 59.8 47.3 3540 62.3 49.8 37.4 3780 49.8 39.9 29.9 4010 37.4 29.9 17.4 4250 24.9 14.9 0.0 4480 10.0 0.0  4720 0.0  

Performance - 50 Hz Metric

External Static Pressure

 Pa

Electrical Data

Electrical Service Sizing

To correctly size electrical service wiring for your unit, find the 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.

Set 1 is for cooling only and cooling with gas heat units, and set 2 is for cooling with electric heat units.

Load Definitions

LOAD1 = CURRENT OF THE LARGEST MOTOR (COMPRESSOR OR FAN MOTOR)

LOAD2 = SUM OF THE CURRENTS OF ALL REMAINING MOTORS

LOAD3 = CURRENT OF ELECTRIC HEATERS

LOAD4 = ANY OTHER LOAD RATED AT 1 AMP OR MORE

Set 1. Cooling Only Rooftop Units and Cooling with Gas Heat Rooftop Units

MCA = (1.25 x LOAD1) + LOAD2 +

LOAD4

MOP = (2.25 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.

RDE = (1.5 x LOAD1) + LOAD2 +

LOAD4

Select a fuse rating equal to the RDE value. If the RDE value does not equal a standard fuse size as listed in NEC 2406, 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.

DSS = 1.15 x (LOAD1 + LOAD2 +

LOAD4)

Select a disconnect switch size equal to or larger than the DSS value calculated.

Set 2. Rooftop units with Electric Heat

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.

(Keep in mind when determining LOADS that the compressors and condenser fans dont run while the unit is in the heating mode).

For units using heaters less than 50 kW.

MCA = 1.25 x (LOAD1 + LOAD2 +

LOAD4) + (1.25 x LOAD3)

For units using heaters equal to or greater than 50 kW.

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.

RDE = (1.5 x LOAD1) + LOAD2 +

LOAD3 + LOAD4

The selection RDE value will be the larger of the cooling mode RDE value or the heating mode RDE value calculated above.

DSS = 1.15 x (LOAD1 + LOAD2 +

LOAD3 + LOAD4)

NOTE: Keep in mind when determining LOADS that the compressors and condenser fans dont run while the unit is in the heating mode.

The selection DSS value will be the larger of the cooling mode DSS or the heating mode DSS calculated above.

Select a disconnect switch size equal to or larger than the DSS value calculated.

Electrical Data

Table 31-1  Electrical Service Sizing Data

Model Characteristics Nominal HP (Ea.) Ea.) HP FLA No. HP (Ea.) MCA* Fuse Size TC/TE/YC*275 380-415/50/3 2/10,15 18.1/27.3 110/174 5 13.1 3 .75 4.4 79 100 TC/TE/YC*305 380-415/50/3 2/15,15 27.3 174 5 13.1 3 .75 4.4 93 110 TC/TE/YC*350 380-415/50/3 2/15,15 27.3 174 5 13.1 3 .75 4.4 93 110 TC/TE/YC*400 380-415/50/3 2/15,15 27.3 174 7.5 16.6 4 .75 4.4 119 125

TC/TE/YC*500 380-415/50/3 3/15 27.3 174 7.5 16.6 4 .75 4.4 128 150

Notes:

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.

Electrical

Qty./ RLA LRA FLA Max.

Compressor Supply Condenser

1/10 18.1 110

Fan Motors

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

(Electric Heat Units Only)

Models: TED/TEH 275 thru 500 Electric Heat FLA

Nominal Nominal

Unit Size Unit KW Heater (380/415V)

(Tons) Voltage 23/27 34/40 45/54 56/67 68/81

23-29 380 34.5 51.1 68.9 85.5 

33, 43 380  51.1 68.9 85.5 103.4

Notes:

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

415 37.6 55.6   

415  55.6 75.1 93.2 112.7

Controls

VAV Units Only

Sequence of Operation

1 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.

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.

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.

2 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.

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 Economizer Module, Tracer remote potentiometer can provide the input to establish the minimum damper position.

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 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.

a reset based on outdoor air temperature

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.

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

, or a

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.

b 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.

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 temperature setpoint the amount of reset is equal to the reset amount setpoint.

3 Zone Temperature Control

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 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.

Controls CV Units Only

VAV Units Only

Morning Warm-up (MWU)

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.

CV Units Only

Sequence of Operation 1 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.

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.

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

Economizer Module (UEM), Tracer or a remote potentiometer can provide the input to establish the minimum damper position.

At outdoor air temperatures above the enthalpy control setting, primary cooling only is used and the outdoor air dampers remain at minimum position.

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 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.

When the space temperature rises above the heating setpoint, the UCP deenergizes 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.

The supply fan is energized 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.

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.

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.

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.

Controls

Both VAV and CV Units

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

Ventilation Override (VOM)

Ventilation override allows an external system to assume control of the unit for the purpose of exhaust or 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 pressurization. The component state matrix for ventilation override is as follows:

System Component Exhaust Pressurization

Heat/Cool off off IGV closed open Supply Fan off on Exhaust Fan on off Outside Air Damper closed open Return Air Damper open closed VAV Boxes n/a open

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.

Occupied/Unoccupied Switching

There are three ways to switch Occupied/Unoccupied:

NSB Panel

Field-supplied contact closure

TRACER



Night Setback Sensors

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 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.

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.

Timed Override Activation  ICS

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.

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.

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.

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.

Dimensional Data

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

Note: Dimensions in ( ) are mm 1 = 25.4 mm

Dimensional Data

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

Note: Dimensions in ( ) are mm 1 = 25.4 mm

Dimensional Data

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

Note: Dimensions in ( ) are mm 1 = 25.4 mm

Weights

Table 38-1  Approximate Operating Weights  Lbs.

Basic Unit Weights

Unit YC YC TC TE Baro. Power Hi Eff. Sup Man Guide Serv base Discon. Discon.

Model Low Heat High Heat Relief Exhaust Fan Motor2Damper Econ. Vanes Valves Elec. Switch Switch **D275 3650 4012 3520 3553 110 165 120 50 260 55 11 6 30 85 **H275 3650 4077 3565 3598 145 200 120 50 285 55 11 6 30 85 **D305 3730 4092 3600 3633 110 165 120 50 260 55 11 6 30 85 **H305 3730 4142 3600 3633 145 200 120 50 285 55 11 6 30 85 **D350 3815 4177 3685 3718 110 165 120 50 260 55 11 6 30 85 **H350 3815 4227 3685 3718 145 200 120 50 285 55 11 6 30 85 **D400 4665 4785 4440 4475 110 165 125 50 290 70 18 6 30 85 **H400 4690 4815 4440 4475 145 200 125 50 300 70 18 6 30 85 **D500 4835 4955 4610 4645 110 165 125 50 290 70 18 6 30 85 **H500 4860 4985 4610 4645 145 200 125 50 300 70 18 6 30 85

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.

Hi-Stat/ 0-25% Inlet Thru-the Fused GFI with

Weight of Optional Components

Non- Fact.

Table 38-2  Approximate Operating Weights  Kgs.

Basic Unit Weights

Unit YC YC TC TE Baro. Power Hi Eff. Sup Man Guide Serv base Discon. Discon.

Model Low Heat High Heat Relief Exhaust Fan Motor **D275 1643 1805 1584 1599 50 74 54 23 117 25 5 3 14 38 **H275 1643 1835 1604 1619 65 90 54 23 128 25 5 3 14 38 **D305 1679 1841 1620 1635 50 74 54 23 117 25 5 3 14 38 **H305 1679 1864 1620 1635 65 90 54 23 128 25 5 3 14 38 **D350 1717 1880 1658 1673 50 74 54 23 117 25 5 3 14 38 **H350 1717 1902 1658 1673 65 90 54 23 128 25 5 3 14 38 **D400 2099 2153 1998 2014 50 74 56 23 131 32 8 3 14 38 **H400 2111 2167 1998 2014 65 90 56 23 135 32 8 3 14 38 **D500 2176 2230 2075 2090 50 74 56 23 131 32 8 3 14 38 **H500 2187 2243 2075 2090 65 90 56 23 135 32 8 3 14 38

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.

Hi-Stat/ 0-25% Inlet Thru-the Fused GFI with

Weight of Optional Components

Non- Fact.

Damper Econ. Vanes Valves Elec. Switch Switch

Table 38-3  Point Loading Percentage of Total Unit Weight

ABCDE F

21 23 12 16 17 12

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.

POINT LOADING - % OF TOTAL UNIT WEIGHT

Table 38-4  Minimum Operating Clearances for Unit Installation

Single Unit

Multiple Unit

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.

1,3

Econo / Exhaust End End / Side Access

6 Feet (1.82 M) 8 Feet / 4 Feet (2.43/1.21 M) 4 Feet (1.21 M)

12 Feet (3.65 M) 16 Feet / 8 Feet (4.87/2.43 M) 8 Feet (2.43 M)

Condenser Coil

DE F

TOP VIEW OF UNIT

COMPRS

CB A

Service Side

Field

Variable Air

Installed Sensors

SINGLE SETPOINT SENSOR WITH SYSTEM FUNCTION LIGHTS (BAYSENS021*)

Volume

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

Field

Constant

Installed

Volume

Sensors

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

Field

Constant and

Installed Sensors

Integrated Comfort System Sensors

ZONE TEMPERATURE SENSOR W/TIMED OVERRIDE BUTTON AND LOCAL SETPOINT ADJUSTMENT (BAYSENS014*)

Variable

Air Volume

ZONE TEMPERATURE SENSOR W/TIMED OVERRIDE BUTTON (BAYSENS013*)

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

Mechanical Specifications

General

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 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.

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.

Filters

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.

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 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.

Refrigerant Circuits

Each refrigerant circuit shall have independent thermostatic expansion devices, service pressure ports and refrigerant line filter driers factoryinstalled as standard. An area shall be provided for replacement suction line driers.

Evaporator and Condenser Coils

Condenser coils shall have copper tubes mechanically bonded to lanced aluminum plate fins. Evaporator coils shall be 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.

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 builtin 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.

Gas Heating Section

The heating section shall have a drum and tube heat exchanger(s) design using corrosion resistant steel components. A forced combustion blower shall supply premixed fuel to a single burner ignited by a pilotless hot

/2 (13 mm) internally

/8 (10 mm)

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.

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.

Control Options

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.

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.

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.

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.

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.

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.

Exhaust Air

Barometric Relief

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.

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.



Unit Options

Service Valves

Service valves shall be provided factory installed and include suction, liquid, and discharge three-way shutoff valves.

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.

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.

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.

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.

Hinged Service Access

Filter access panel and supply fan access panel shall be hinged for ease of unit service.

Condenser Coil Guards

Factory installed condenser vinyl coated wire mesh coil guards shall be available to provide full area protection against debris and vandalism.

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 connected directly to the curb when used with downflow units. Curb design shall comply with NRCA requirements.

Curb shall ship knocked down for field

assembly and include wood nailer

strips.

Trane Communication Interface (TCI)

Shall be provided to interface with the

Trane Integrated Comfort

shall be available factory installed. The

TCI shall allow control and monitoring

of the rooftop unit via a two-wire

communication link.

The following alarm and diagnostic

information shall be available:

UCP Originated Data

Unit operating mode



Unit failure status



Cooling failure

Heating failure

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



Enthalpy favorability status



Requested minimum position



Damper position



Dry bulb/enthalpy input status



Outside air temperature



Outside relative humidity



Sensor Failure



Humidity sensor

OAT sensor

SAT sensor

RAT sensor

Zone temperature sensor

Mode input

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



Local mode setting



Inlet guide vane position





system and

Tracer® Originated Data

Command operating mode



Host controllable functions:



Supply fan Economizer Cooling stages enabled Heating stages enabled Emergency shutdown Minimum damper position



Heating setpoint



Cooling setpoint



Supply air tempering enable/disable



Slave mode (CV only)



Tracer/local operation



SAT setpoint



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



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.

Conventional Thermostat Interface (CTI)

This field installed circuit board shall provide interface with electromechanical thermostats or automation systems. Not available with VAV system control.

Differential Pressure Switches

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.

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.

Remote Potentiometer

A remote potentiometer shall be available to remotely adjust the unit economizer minimum position.

High Temperature Thermostats

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).

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.

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.

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.

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.

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.

BAYSENS013*  Zone temperature sensor with timed override buttons used with Tracer system.

Integrated Comfort

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.

BAYSENS016*  Temperature sensor is a bullet or pencil type sensor that could be used for temperature input such as return air duct temperature.

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.

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.

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.

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.

BAYSTAT023*  Remote Minimum Position Potentiometer is used to remotely specify the minimum economizer position.

The Trane Company

International Unitary Systems Group 3600 Pammel Creek Road La Crosse, WI 54601-7599 www.trane.com

An American Standard Company

Since The Trane Company has a policy of continuous product improvement, it reserves the right to change design and specification without notice.

Library Product Literature

Product Section Unitary

Product Rooftop

Model 000

Literature Type Data Sales Catalog

Sequence 10

Date April 1999

File No. PL-UN-RT-000-DS-10-499

Supersedes RT-DS-10 12/94 Ordering No. RT-DS-10

Trane RT-DS-10 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Features and Benefits

ContentsContents

Features and Benefits

Model Number Description

General Data

Application Considerations

Selection Procedure

Performance Adjustment Factors

Performance Data

Electrical Data

Controls

Dimensional Data

Weights

Mechanical Specifications