Carrier Product Data

Copyright 2000 Carrier Corporation

Product

Data

50TFF007-014

Single-Package Rooftop Units

Electric Cooling with Electric Heat Option

50 Hz

Nominal Capacity: 17.6 kW to 35.9 kW

(5 to 10.2 Tons)

50TFF007

50TFF008-014

Single-Package Rooftop Units with:

• Galvanized pre-painted steel cabinet

• Fifty-one mm (2-in.) return-air filters

• Commercial strength base rails

• Exclusive tool-less filter access panel

• Corrosion-resistant sloped condensate pan

• Single power entry to unit

• Commercial duty motors with permanently lubricated bearings

• Standard cooling operation at outdoor ambient temperatures as low as –4 C (25 F)

• Meets ASHRAE Standard 62

(Indoor Air Quality)

Features/Benefits

Compact, vertical discharge units convert to horizontal discharge, combining installation flexibility with efficient performance and easy maintenance.

Easy installation and conversion

All units are shipped in the vertical discharge configuration for fit-up to standard roof curbs. (Two different curb sizes fit unit sizes 007 and 008-014.)

The contractor can order and install the roof curb early in the construction stage, before decisions on size requirements are made.

All units feature roll-formed baserail design with forklift slots on 3 sides and rigging holes for easier maneuvering.

Durable packaging protects all units during shipment and storage.

The units can be easily converted from a vertical to a horizontal discharge configuration by interchanging the panels supplied with the unit.

Form 50TFF-C1PD

2

All units feature a non-corrosive sloped condensate drain pan in accordance with ASHRAE (American Society of Heating, Refrigeration and Air

Conditioning Engineers) Standard 62.

Also, the sloped condensate pan on units permits either an external side condensate drain (outside the roof curb) or an internal bottom drain (inside the roof curb). Both options require fieldsupplied P-trap.

In addition, the 50TFF units have a standard filter access door, which permits tool-less filter changes.

Field-installed electric heaters are available in a wide range of capacities.

Single point wiring kit makes installation simple.

Simple electrical connections

Terminal boards, located in the base unit control box, facilitate connections to room thermostat, outdoor thermostat(s), economizer, and electric heat.

Service panels are quickly removed, permitting easy servicing.

Thru-the-bottom service connection capability and thru-the-curb service connections accessory allows power and control wiring to be routed through the unit basepan or curb, minimizing roof penetrations. Both power and control connections are made on the same side of the unit to simplify installation. In addition, color-coded wires permit easy tracing and diagnostics.

Proven compressor reliability

Design techniques feature computerprogrammed balance between compressor, condenser, and evaporator.

Carrier-specified hermetic compressors are equipped with compressor overcurrent and overtemperature protection to ensure dependability.

The 50TFF units have Carrier’s exclusive Acutrol™ metering device which precisely controls refrigerant flow, preventing slugging and flood-back, while maintaining optimum unit performance.

Carrier’s exclusive Acutrol metering device precisely controls refrigerant flow, preventing slugging and floodback, while maintaining optimum unit performance.

Durable, dependable construction

Designed for durability in any climate, the weather-resistant cabinets are manufactured using pre-painted steel.

The cabinet is constructed of galvanized steel and bonderized, and all exterior panels are coated with a prepainted baked enamel finish. The paint finish is non-chalking, and is capable of withstanding Federal (U.S.A.) Test

Method Standard ASTM B117

500-hour salt spray test. All internal cabinet panels are primed, permitting longer life and a more attractive appearance for the entire unit. In addition, the 50TFF units are designed with a single, continuous top piece to eliminate any possible leaks. Totally enclosed condenser-fan motors and permanently lubricated bearings provide additional unit dependability.

Integrated economizers and outdoor air

During a first stage call for cooling, if the outdoor-air temperature is below the control set point, the supply-air sensor modulates the economizer outdoor-air damper open to achieve the set point. When second-stage cooling is called for, the compressor is energized in addition to the economizer. If the outdoor-air temperature is above the set point, the first stage of compression is activated and the economizer stays at minimum vent position. Economizer operation is controlled by Accusensor™

I dry-bulb thermostat that senses outdoor-air temperature. Accessory upgrade kits include solid-state enthalpy control and differential enthalpy sensor.

The Durablade economizer has a reliable sliding plate damper which is easily adjusted for 100% outdoor air,

100% return air, or any proportions of mixed air.

The 50TFF units also utilize the optional field or factory-installed

EconoMi$er. This newly designed

EconoMi$er incorporates a parallel-opposed blade design. In addition, the EconoMi$er has a spring return built into the damper motor to provide reliable close-on-power-loss.

The EconoMi$er comes equipped with up to 100% barometric relief capability for high outdoor airflow applications.

In addition, the EconoMi$er barometric relief damper or integrated power exhaust accessory can be utilized to help maintain proper building pressure.

Quiet, efficient operation and dependable performance

Compressors have vibration isolators for extremely quiet operation. Efficient fan and motor design permits operation at very low sound levels, and all

008-014 units are mounted on a special polycore plate.

The 50TFF008-014 units offer high energy efficiency and lower utility costs through part load operation using

2 stages of cooling.

Quiet and efficient operation is provided by belt-driven evaporator fans

(standard). The belt-driven evaporatorfan motor allows adjustment to available static pressure to meet the job requirements of even the most demanding applications.

Increased operating efficiency is achieved through computer-designed coils featuring staggered copper tubes.

Fins are ripple-edged for strength, lanced, and double waved for higher heat transfer.

Carrier Apollo controls add reliability, efficiency, and simplification

The direct digital controls are ordered as a factory-installed option. Designed and manufactured exclusively by

Carrier, the controls can be used to actively monitor and control all modes of operation, as well as to monitor evaporator-fan status, filter status indoor-air quality (humidity and carbon dioxide), supply-air temperature, and outdoor-air temperature.

Table of contents

Page

Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,5

Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Base Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9,10

Accessory Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,12

Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13,14

Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-33

Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Typical Piping and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Typical Wiring Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36,37

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38-40

Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Guide Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-44

Features/Benefits (cont)

The Apollo communicating control is factory-installed into the rooftop unit evaporator-fan section (007) or unit control box (008-014), and comes equipped with built-in diagnostic capabilities. Light-emitting diodes (LEDs) simplify troubleshooting by indicating thermostat commands for both stages of heating and cooling, evaporator-fan operation, and economizer operation.

The Apollo communicating control is designed to work specifically with the

Carrier TEMP and VVT® (variable volume and temperature) thermostats.

The Apollo control combined with

Carrier thermostats incorporate a

5-minute recycle delay timer between modes of operation to prevent short cycling.

The standard rooftop control system is readily adaptable to all conventional and programmable thermostats. In addition, units with Apollo controls are suitable for integration into building monitor control systems if required.

This system gives the 50TFF units the flexibility to communicate with almost any thermostat or building control system.

Indoor-air quality begins with

Carrier rooftops

Sloped condensate pans minimize biological growth in rooftop units in accordance with ASHRAE Standard 62.

Standard 51 mm (2-in.) filters with optional dirty filter indicator switch provide for greater particle reduction in the return air. The face-split evaporator coils improve the dehumidification capability of the standard units, and standard enthalpy controls provided with the optional or accessory economizers maximize building humidity control. The 50TFF units also have an accessory, 100% open, two-position damper to meet all your fresh outdoor air requirements.

For units without economizer, yearround ventilation is enhanced by a manual outdoor-air damper (ordered as an accessory or an option on 50TFF units). The damper can be preset to admit up to 50% outdoor air.

Model number nomenclature

LEGEND

Al

— Aluminum

Cu

— Copper

FIOP — Factory-Installed Option

Quality Assurance

IS

O

®

90

01:2000 #A

23

2

5

*Refer to 50TFF ordering data or contact your local Carrier representative for 50TFF FIOP code table.

†All coils have copper tubes.

3

4

Physical data (SI)

UNIT SIZE 50TFF

NOMINAL CAPACITY (kW)

OPERATING WEIGHT (kg)

Unit

Al/Al*

Al/Cu*

Durablade Economizer

EconoMi$er

Roof Curb†

COMPRESSOR

Type

Quantity

Oil (ml)

REFRIGERANT TYPE

Operating Charge (kg)

Circuit 1

Circuit 2

CONDENSER COIL

Rows...Fins/m

Total Face Area (sq m)

CONDENSER FAN

Nominal L/s

Quantity...Diameter (mm)

Motor BkW...r/s

EVAPORATOR COIL

Rows...Fins/m

Total Face Area (sq m)

EVAPORATOR FAN

Quantity...Size (mm x mm)

Type Drive

Nominal L/s

Motor kW

Maximum Continuous BkW

Motor Frame Size

Nominal r/s High/Low

Fan r/s Range

Motor Bearing Type

Maximum Allowable r/s

Motor Pulley Pitch Diameter Min/Max (mm)

Nominal Motor Shaft Diameter (mm)

Fan Pulley Pitch Diameter (mm)

Nominal Fan Shaft Diameter (mm)

Belt, Quantity...Type...Length (mm)

Pulley Center Line Distance (mm)

Speed Change per Full Turn of

Movable Pulley Flange (r/s)

Movable Pulley Maximum Full Turns

From Closed Position

Factory Setting

Factory Speed Setting (r/s)

Fan Shaft Diameter at Pulley (mm)

HIGH-PRESSURE SWITCH (kPa)

Standard Compressor Internal Relief

(Differential)

Cutout

Reset (Auto.)

LOW-PRESSURE SWITCH (kPa)

Cutout

Reset (auto.)

FREEZE PROTECTION THERMOSTAT

Opens (C)

Closes (C)

OUTDOOR-AIR INLET SCREENS

Quantity...Size (mm)

RETURN-AIR FILTERS

Quantity...Size (mm)

LEGEND

Al

— Aluminum

Bhp

— Brake Horsepower

BkW — Fan Input Watts x Motor Efficiency

Cu

— Copper

50TFF007-014 UNITS

007

17.6

213

245

15.4

21

52

Scroll

1

1597

3448 ± 345

008

21.5

342

374

20.0

28

65

2

1242 ea

009

24.3

345

376

20.0

28

65

Reciprocating

2

1922 ea

R-22

3103 ± 345

2951

2206

48 ± 21

152 ± 48

012

29.2

415

447

20.0

28

65

2

1597 ea

014

35.9

422

454

20.0

28

65

Scroll

2

1597 ea

3.40

—

2...669

0.97

1415

1...559

.25...16.0

2880

2...559

.19...15.5

Propeller Type

2880

2...559

.19...15.5

3050

2...559

.19...15.5

3050

2...559

.19...15.5

3

/

8

-in., Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device

4...590

3...590

3...590

3...590

4...590

0.51

0.74

0.74

0.93

1.03

1...254 x 254

Belt

1130

1.12

1.79

56

—

15.50-20.08

Ball

35.0

71/97

16

114

—

1...A...1092

373-394

2.18

2.21

3.12

4.16

3.26

3.54

3

/

8

-in., Enhanced Copper Tubes, Aluminum Lanced Fins

1...669

2...669

2...669

1.90

1.67

1.90

1...381 x 381

Belt

1230

1.12

1.79

56

—

10.33-14.67

Ball

26.7

61/86

16

178

25

1...A...1245

425-489

Centrifugal Type

1...381 x 381

Belt

1420

1.12

1.79

56

—

10.33-14.67

Ball

26.7

71/97

16

178

25

1...A...1245

425-489

1...381 x 381

Belt

1700

1.50

1.79

56

—

11.50-15.00

Ball

26.7

71/97

16

178

25

1...A...1245

403-445

3.91

3.80

2...669

2.30

1...381 x 381

Belt

1980

2.24

2.76

56

—

11.83-14.83

Ball

26.7

102/127

22

203

25

1...A...1321

403-445

1.33

.83

.83

.83

.73

5

5

15.50

16

5

5

10.33

25

5

5

10.33

25

5

5

11.50

25

5

5

11.83

25

3448 ± 345

1...508 x 610 x 25

–1

7

Cleanable

1...508 x 635 x 25

1...406 x 635 x 25

Throwaway

2...406 x 635 x 51 4...406 x 508 x 51 4...406 x 508 x 51 4...508 x 508 x 51 4...508 x 508 x 51

*Evaporator coil fins/condenser coil fins.

†Weight of 356 mm roof curb.

NOTE: The 50TFF007-014 units have a loss-of-charge/low-pressure switch (accessory) located in the liquid line.

Physical data (English)

50TFF007-014 UNITS

007

5

008

6.1

UNIT SIZE 50TFF

NOMINAL CAPACITY (tons)

OPERATING WEIGHT (lb)

Unit

Al/Al*

Al/Cu*


EconoMi$er

Roof Curb†

COMPRESSOR

Type

Quantity

Oil (oz)

REFRIGERANT TYPE

Operating Charge (lb-oz)

Circuit 1

Circuit 2

CONDENSER COIL

Rows...Fins/in.

Total Face Area (sq ft)

CONDENSER FAN

Nominal Cfm

Quantity...Diameter (in.)

Motor Hp...Rpm

EVAPORATOR COIL

Rows...Fins/in.

Total Face Area (sq ft)

EVAPORATOR FAN

Quantity...Size (in.)

Type Drive

Nominal Cfm

Motor Hp

Maximum Continuous Bhp

Motor Frame Size

Fan Rpm Range

Motor Bearing Type

Maximum Allowable Rpm

Motor Pulley Pitch Diameter Min/Max (in.)

Nominal Motor Shaft Diameter (in.)

Fan Pulley Pitch Diameter (in.)

Nominal Fan Shaft Diameter (in.)

Belt, Quantity...Type...Length (in.)

Pulley Center Line Distance (in.)

Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full Turns

From Closed Position

Factory Setting

Factory Speed Setting (rpm)

Fan Shaft Diameter at Pulley (in.)

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief

(Differential)

Cutout

Reset (Auto.)

LOW-PRESSURE SWITCH (psig)

Cutout

Reset (Auto.)

FREEZE PROTECTION THERMOSTAT

Opens

Closes

OUTDOOR-AIR INLET SCREENS


RETURN-AIR FILTERS


LEGEND

Al

— Aluminum

Bhp


BkW — Fan Input Watts x Motor Efficiency

Cu

— Copper

009

6.9

012

8.3

014

10.2

470

540

34

47

115

755

825

44

62

143

760

830

44

62

143

915

985

44

62

143

930

1000

44

62

143

Scroll

1

54

2

42 ea

Reciprocating

2

65 ea

R-22

2

54 ea

Scroll

2

54 ea

7-8

—

2...17

10.42

3

/

8

4-13

4-14

6-14

9- 2

7- 3

7-13

-in., Enhanced Copper Tubes, Aluminum Lanced Fins

1...17

20.50

2...17

18.00

2...17

20.47

8-10

8- 6

3000

1...22.0

1

/

3

...960

6100

1

/

2...22

4

...930

Propeller Type

1

/

6100

2...22

4

...930

6500

1

/

2...22

4

...930

6500

1

/

2...22

4

...930

3

/

8

-in., Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Feed Device

4...15

3...15

3...15

3...15

4...15

5.5

8.0

8.0

10.0

11.1

1...10 x 10

Belt

2000

1

1

/

2

2.40

56

930-1205

Ball

2100

2.8/3.8

5

/

8

4.5

—

1...A...40

14.7-15.5

1...15 x 15

Belt

2600

1

1

/

2

2.40

56

620-880

Ball

1600

2.4/3.4

5

/

8

7.0

—

1...A...49

16.75-19.25

Centrifugal Type

1...15 x 15

Belt

2600

1

1

/

2

2.40

56

620-880

Ball

1600

2.8/3.8

5

/

8

7.0

—

1...A...49

16.75-19.25

1...15 x 15

Belt

3500

5

2

2.40

56

690-900

Ball

1600

2.8/3.8

/

8

7.0

—

1...A...49

15.85-17.50

2...17

25.00

1...15 x 15

Belt

4200

3

3.70

56

710-890

Ball

1600

4.0/5.0

7

/

8

8.0

—

1...A...52

15.85-17.50

80 50 50 50 44

5

5

930

5

/

8

5

5

620

1

5

5

620

1

5

5

690

1

5

5

710

1

500 ± 50

Cleanable

1...20 x 24 x 1

2...16 x 25 x 2

450 ± 50

428

320

7 ± 3

22 ± 7

500 ± 50

30 ± 5

45 ± 5

Cleanable

1...20 x 25 x 1

1...16 x 25 x 1

Throwaway

4...16 x 20 x 2 4...20 x 20 x 2 4...16 x 20 x 2 4...20 x 20 x 2

*Evaporator coil fins/condenser coil fins.

†Requires the accessory/optional controls upgrade kit.

NOTE: The 50TFF007-014 units have a loss-of-charge/low-pressure switch (accessory) located in the liquid line.

5

Options and accessories

ITEM

Apollo Communicating Controls

Disconnect Switch

EconoMi$er

EconoMi$er with Power Exhaust

Power Exhaust for EconoMi$er

Durablade Integrated Economizer (Includes Hood)

Manual Outdoor-Air Damper

Condenser Coil Grille

Electric Heat

Electronic Programmable Thermostat

25% Open Two-Position Damper

100% Open Two-Position Damper

Roof Curbs (Vertical and Horizontal Discharge)

Thermostats and Subbases

Motormaster® I Head Pressure Control (Speed Control)

Motormaster II Head Pressure Control (Fan Cycling)

Time Guard® II Control Circuit

Thru-the-Bottom Service Connections

Thru-the-Curb Service Connections

Accusensor™ II Enthalpy Control

Accusensor III Enthalpy Sensor

Condenser Coil Hail Guard Assembly

Fan/Filter Status

Salt Spray Protection Grille (008-014)

Logo Kit

Outdoor-Air Enthalpy Sensor (EconoMi$er)

Return-Air Enthalpy Sensor (EconoMi$er)

Return-Air Temperature Sensor (EconoMi$er)

Indoor-Aair Quality (CO

2

) Sensor (EconoMi$er)

*Factory installed.

†Field installed.

OPTION* ACCESSORY†

X

X

X X

X X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

6

HEAD PRESSURE CONTROL

The 50TFF007-014 standard units are designed to operate in cooling at outdoor temperatures down to –3.8 C (25 F). With accessory Motormaster control (condenser fan speed modulation) or Motormaster II control

(condenser fan cycling) units can operate at outdoor temperatures down to –17.8 C (0° F). The head pressure controls, which mount in the condenser section, control the condenser-fan motor to maintain correct condensing temperature. Refer to product ordering or contact your local

Carrier representative for appropriate accessory combinations for desired outdoor ambient temperature operation.

Motormaster II Control

(007-014)

Motormaster I Control

(007-014)

ELECTRONIC PROGRAMMABLE THERMOSTAT

THERMOSTAT

H

C

Carrier’s electronic programmable thermostat provides efficient temperature control by allowing you to program heating and cooling setbacks and setups with provisions for weekends and holidays. Accessory remote sensing package is also available to provide tamperproof control in high traffic spaces. Used in conjunction with factory-installed Apollo control, this thermostat provides a 5-minute recycle timer between modes of operation for short-cycle protection.

Zone thermostat (24 v) provides one- or 2-stage cooling for control of unit. Matching subbases are available with or without tamperproof switches and automatic changeover.

TIME GUARD® II CONTROL

Time Guard II control automatically prevents compressor from restarting for at least 5 minutes after a shutdown. Accessory prevents short cycling of compressor if thermostat is changed rapidly. Time

Guard II control mounts in the control compartment of unit.

DURABLADE ECONOMIZER

Exclusive Durablade economizer damper design saves energy while providing economical and reliable cooling. A sliding plate on the face of the economizer controls the amount of outdoor air entering the system. Closed, it provides a leakproof seal which prevents ambient air from seeping in or conditioned air from seeping out. It can be adjusted easily for 100% outdoor air or any proportions of mixed air.

Like the base unit, the economizer is converted easily for horizontal discharge applications.

7

8

Options and accessories (cont)

ACCUSENSOR™ II

CONTROL

ACCUSENSOR III

SENSOR

OPEN

POSITION MINIMUM

FACTORY-INSTALLED APOLLO

COMMUNICATING CONTROLS

10

30

D

60

M

U

70

H

%

90

REV.

97-3672

Accusensor economizer controls help provide efficient, economical economizer operation. Accusensor II solid-state enthalpy control includes the logic and one sensor to calculate both dry- and wetbulb of the outdoor air to provide an accurate enthalpy reading on. It then decides when to energize the economizer based on this reading. A second Accusensor III sensor compares outdoor temperature and humidity to return-air temperature and humidity and determines the most economical mixture of air (purchased in addition to first solid-state enthalpy sensor for differential enthalpy sensing).

ECONOMI$ER

PLUG

ACTUATOR

ECONOMI$ER

CONTROLLER GEAR-DRIVEN

DAMPER

The Apollo direct digital controls are designed exclusively by

Carrier, and are used to actively monitor and control all modes of operation as well as to monitor evaporator-fan status, filter status, supply-air temperature, outdoor-air temperature, and indoor-air quality. They are designed to work in conjunction with Carrier

TEMP and VVT® system thermostats.

ELECTRIC HEATER

OUTDOOR AIR

TEMPERATURE

SENSOR

BAROMETRIC

RELIEF DAMPERS

Factory-installed EconoMi$er utilizes a microprocessor-based control, gear drive damper system, low pressure drop characteristics, built-in spring return (for close upon power loss), and an integral barometric damper.

NOTE: EconoMi$er is only available for vertical ductwork applications and can be field or factory installed.

Electric heaters are available in a wide range of capacities for factory or field installation.

Base unit dimensions — 50TFF007

UNIT

STD UNIT

WEIGHT

Lbs Kg

50TFF007

470 213.2

DURABLADE

ECONWEIGHT

Lbs

34

Kg

15.4

ECONOMI$ER

WEIGHT

Lbs

47

Kg

21.3

(A)

CORNER WEIGHT

Lbs

148

Kg

67.1

(B)

CORNER WEIGHT

Lbs

103

Kg

46.7

CONNECTION SIZES

A

1

3

/

8

″ Dia. [35] Field Power Supply Hole

B

2

″ Dia. [51] Power Supply Knockout

C

2

1

/

D

E

7

3

/

/

8

4

2


″ Dia. [22] Field Control Wiring Hole

″− 14 NPT Condensate Drain

BOTTOM POWER CHART, THESE HOLES

REQ’D FOR USE WITH ACCESSORY PACKAGES —

CRBTMPWR001A00 (

1

/

2

″,

3

/

4

″)

THREADED

CONDUIT SIZE

1

/

3

/

2

″

4

″

WIRE USE

24 V

Power

NOTES:

1. Dimensions in [ ] are in millimeters.

2.

Center of gravity.

3.

Direction of airflow.

4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For horizontal discharge units field-supplied flanges should be attached to horizontal discharge openings, and all ductwork should be attached to the flanges.

5. Minimum clearance (local codes or jurisdiction may prevail): a. Between unit, flue side and combustible surfaces, 36 inches.

b. Bottom of unit to combustible surfaces (when not using curb) 1 inch. Bottom of base rail to combustible surfaces (when not using curb) 0 inches.

c. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater clearance is optional.

d. Overhead, 60 in. to assure proper condenser fan operation.

e. Between units, control box side, 42 in. per NEC.

f.

Between unit and ungrounded surfaces, control box side, 36 in. per NEC.

g. Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in.

per NEC.

h. Horizontal supply and return end, 0 inches.

6. With the exception of the clearance for the condenser coil and combustion side as stated in Note

5a, b, and c, a removable fence or barricade requires no clearance.

7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material if set on base rail.

8. The vertical center of gravity is 1

′-6″ [457] up from the bottom of the base rail.

REQ’D HOLE

SIZES (Max.)

7

/

8

1

1

/

8

″ [22.2]

″ [28.4]

(C)

CORNER WEIGHT

Lbs

155

Kg

70.3

(D)

CORNER WEIGHT

Lbs

64

Kg

29.0

“A”

PANEL

LENGTH

1

′-0

3

/

8

″ [315.0]

9

Base unit dimensions — 50TFF008-014

UNIT

STD UNIT

WEIGHT

Lb

50TFF008

755

50TFF009

760

50TFF012

915

50TFF014

930

Kg

342

345

415

422

DURABLADE

ECONOMIZER

WEIGHT

Lb Kg

44

44

44

44

20

20

20

20

CONNECTION SIZES

A

1

3

/

8

B

2

1

/

2

″ Dia. [35] Field Power Supply Hole


C

1

3

/

D

E

7

3

/

/

8

4

4

″ Dia. [44] Charging Port Hole

″ Dia. [22] Field Control Wiring Hole

″ — 14 NPT Condensate Drain

F

2


ECONOMI$ER

WEIGHT

Lb

62

62

62

62

Kg

28

28

28

28

CORNER

WEIGHT

(A)

Lb Kg

164

165

199

202

74

75

90

92

CORNER

WEIGHT

(B)

Lb Kg

140

141

170

172

64

64

77

78

CORNER

WEIGHT

(C)

Lb Kg

208

209

252

256

CORNER

WEIGHT

Lb

94 243

94 245

114 294

116 300

(D)

Kg

110

111

134

136

NOTES:


2.

Center of gravity.

Ft-in.

1-2

7

/

8

3-3

7

/

8

2-5

7

/

8

1-2

7

/

8

“H” “J” mm Ft-in.

378 3-5

5

/

16

1013 3-5

5

/

16

759 4-1

5

/

16

378 4-1

5

/

16

“K” mm Ft-in.

1050 2-9

11

/

16

1050 2-9

11

/

16

1253 3-0

3

/

8

1253 3-0

3

/

8

mm

856

856

924

924

BOTTOM POWER CHART, THESE HOLES REQ’D

FOR USE WITH ACCESSORY PACKAGES —

CRBTMPWR001A00 (

1

/

CRBTMPWR002A00 (

2

1

/

″,

2

3

/

″, 1

″) OR

1

/

4

″)

THREADED

CONDUIT

SIZE

1

/

2

″

1

1

/

4

3

/

4

″

″ FPT

WIRE

USE

24 V

Power*

Power*

REQ’D HOLE

7

/

SIZES

(Max.)

8

″ [22.2]

1

1

/

8

1

3

/

4

″ [28.4]

″ [44.4]

*Select either

3

/

4 size.

″ or 1

1

/

4

″ for power, depending on wire

3.


4. Ductwork to be attached to accessory roof curb only.

5. Minimum clearance (local codes or jurisdiction may prevail): a. Bottom to combustible surfaces (when not using curb) 0 inches, on horizontal discharge units with electric heat 1 in. clearance to ductwork for 1 ft.

b. Condenser coil, for proper airflow, 36 in. one side, 12 in. the other. The side getting the greater clearance is optional.

c. Overhead, 60 in. to assure proper condenser fan operation.

d. Between units, control box side, 42 in. per NEC (National Electrical Code).

e. Between unit and ungrounded surfaces, control box side, 36 in. per NEC.

f.

Between unit and block or concrete walls and other grounded surfaces, control box side, 42 in. per

NEC.

g. Horizontal supply and return end, 0 inches.

6. With the exception of the clearance for the condenser coil as stated in Notes 5a, b, and c, a removable fence or barricade requires no clearance.

7. Units may be installed on combustible floors made from wood or Class A, B, or C roof covering material.

8. The vertical center of gravity is 1

′-7

1

/ bottom of the base rail.

2

″ [495] for 008 and 009, 2′-0″ [610] for 012 and 014 up from the

10

Accessory dimensions

ROOF CURB

ACCESSORY

“A”

CRRFCURB001A00

1

′-2″ [356]

CRRFCURB002A00

2

′-0″ [610]

UNIT SIZE

50TFF

007

B C

D

ALT DRAIN HOLE

“E”

GAS

3

/

4

″

[19] NPT

1

′-9

11

/

16

[551]

″

1

′-4″

[406]

1

3

/

4

″

[44.5]

1

/

2

″

[12.7] NPT

3

/

4

″

[19] NPT

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels.


4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

“F”

POWER

3

/

4

″ [19] NPT

1

1

/

4

″ [31.7]

NPT

3

/

4

″ [19] NPT

1

1

/

4

″ [31.7]

NPT

“G”

CONTROL

1

/

2

″

[12.7]

1

/

2

″

[12.7]

CONNECTOR

PKG. ACCY.

CRBTMPWR001A00

CRBTMPWR002A00

CRBTMPWR003A00

CRBTMPWR004A00

6. Service clearance 4 ft on each side.

7.


8. Connector packages CRBTMPWR001A00 and 002A00 are for thru-the-curb connections.

Packages CRBTMP003A00 and

004A00 are for thru-the-bottom connections.

11

Accessory dimensions (cont)

ROOF CURB

ACCESSORY

“A”

CRRFCURB003A00

1

′-2″ [356]

CRRFCURB004A00

2

′-0″ [610]

UNIT SIZE

50TFF

008-014

“B”

2

′-8

7

/

16

″

[827]

1

“C”

′-10

16

″

15

[583]

/

“D” ALT

DRAIN

HOLE

1

3

/

4

″

[44.5]

“E”

GAS

3

/

4

″

[19] NPT

1

/

2

″

[12.7] NPT

3

/

4

″

[19] NPT

“F”

POWER

3

/

4

″ [19] NPT

1

1

/

4

″ [31.7] NPT

3

/

4

″ [19] NPT

1

1

/

4

″ [31.7] NPT

“G”

CONTROL

1

/

2

″ [12.7]

NPT

1

/

2

″ [12.7]

NPT

CONNECTOR

PACKAGE

ACCESSORY

CRBTMPWR001A00

CRBTMPWR002A00

CRBTMPWR003A00

CRBTMPWR004A00

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels, 1

″ thick polyurethane foam, 1

3

/

4 lb density.


4. Roof curb: 16 gage steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

6. Service clearance 4 ft on each side.

7.


8. Connector packages CRBTMPWR001A00 and

002A00 are for thru-the-curb connections.

Packages CRBTMP003A00 and 004A00 are for thru-the-bottom connections.

12

Selection procedure (with 50TFF012 example) — SI

I. Determine cooling and heating requirements at design conditions.

Given:

Required Cooling Capacity (TC) . . . . . . . . . 28 kW

Sensible Heat Capacity (SHC) . . . . . . . . . . 19 kW

Required Heating Capacity . . . . . . . . . . . . 18 kW

Condenser Entering-Air Temp . . . . . . . . . . . 36 C

Evaporator Entering-Air Temp . . . . . . 26.7 C edb,

20 C ewb

Evaporator Air Quantity. . . . . . . . . . . . . 1520 L/s

External Static Pressure (ESP). . . . . . . . . . . 300 Pa

Electrical Characteristics (V-Ph-Hz) . . . . . 400-3-50

Edb — Entering dry bulb

Ewb — Entering wet bulb

Durablade economizer required.

II. Select unit based on required cooling capacity.

Enter the 50TFF012 Cooling Capacities table on page 18 at condenser entering temperature of

36 C, evaporator-air entering at 1520 L/s, 26.7 C db and 20 C wb. The 50TFF012 unit will provide cooling capacity of 30.1 kW and a sensible heat capacity of 21.2 kW. For evaporator-air temperature other than 26.7 C edb, calculate sensible heat capacity correction, as required, using the formula found in the notes following the Cooling Capacities table on page 19.

NOTE: Unit ratings are gross capacities and do not include the effect of evaporator-fan motor (IFM) heat. To calculate net capacities, see Step V.

III. Select electric heat:

Heating load required is 18 kW.

Enter the Electric Heating Capacities table (page 33) for the 50TFF012 at 400-3-50. The 19.3 kW heater at 400 v most closely satisfies the heating required.

IV. Determine fan speed and power requirements at design conditions.

Before entering the Fan Performance tables, calculate the total static pressure required based on unit components. From the given and the Pressure Drop tables (page 33), find:

External static pressure 300 Pa

Electric Heat

Total static pressure

14 Pa

323 Pa

Enter the Fan Performance table for the 50TFF012 vertical discharge unit on page 23. Find the fan r/s and kilowatts at 323 Pa and 1520 L/s. Note that the fan speed is 14.5 r/s and power required is

1.56 kW (interpolation required). The standard motor will adequately handle the job requirements.

V. Determine net capacities.

Capacities are gross and do not include the effect of evaporator-fan motor heat. Use IFM kW from Fan

Performance table on page 23.

Determine net cooling capacity as follows:

Net capacity = gross capacity – IFM kW

= 30.1 kW – 1.56 kW

= 28.5 kW

Net sensible capacity = 21.2 kW – 1.56 kW

= 19.6 kW

Determine net heating capacity as follows:

Net capacity = gross capacity + IFM heat

= 19.3 kW + 1.56 kW

= 24.9 kW

13

Selection procedure (with 50TFF012 example) —

English

I. Determine cooling and heating requirements at design conditions.

Given:

Required Cooling Capacity (TC) . . . . 96,000 Btuh

Sensible Heat Capacity (SHC) . . . . . .70,000 Btuh

Required Heating Capacity . . . . . . . 62,000 Btuh

Condenser Entering-Air Temp . . . . . . . . . . . 95 F

Evaporator Entering-Air Temp . . . . . . . . 80 F edb,

67 F ewb

Evaporator Air Quantity. . . . . . . . . . . . . 3200 cfm

External Static Pressure (ESP). . . . . . . .1.10 in. wg

Electrical Characteristics (V-Ph-Hz) . . . . . 400-3-50

Edb — Entering dry bulb

Ewb — Entering wet bulb

Durablade economizer required.

II. Select unit based on required cooling capacity.

Enter the 50TFF012 Cooling Capacities table on page 21 condenser entering temperature of 95 F, evaporator-air entering at 3200 cfm, 80 F db and

67 F wb. The 50TFF012 unit will provide cooling capacity of 102,500 Btuh and a sensible heat capacity of 76,000 Btuh. For evaporator-air temperature other than 80 F edb, calculate sensible heat capacity correction, as required, using the formula found in the notes following the Cooling

Capacities table on page 21.

NOTE: Unit ratings are gross capacities and do not include the effect of evaporator-fan motor (IFM) heat. To calculate net capacities, see Step V.

III. Select electric heat:

Heating load required is 62,000 Btuh.

62,000 Btuh

3413 Btuh/kW

= 18.2 kW of heat required

IV. Determine fan speed and power requirements at design conditions.

Before entering the Fan Performance tables, calculate the total static pressure required based on unit components. From the given and the Pressure Drop tables (page 33) find:

External static pressure

Economizer

Electric Heat

Total static pressure

1.10 in. wg

0.04 in. wg

0.06 in. wg

1.20 in. wg

Enter the Fan Performance table for the 50TFF012 vertical discharge unit on page 27. Find the fan rpm and watts at 1.20 in. wg and 3200 cfm. Note that the fan speed is 844 rpm and power required is

1430 watts. The standard motor will adequately handle the job requirements.

V. Determine net capacities.

Capacities are gross and do not include the effect of evaporator-fan motor heat. Use IFM Watts from Fan

Performance table on page 27.

Determine net cooling capacity as follows:

Net capacity = gross capacity – IFM Watts

= 102,500 Btuh – 1430 Watts x 3.413

Btuh

Watts

= 102,500 Btuh – 4881 Btuh

= 97,619 Btuh

Net sensible capacity = 76,000 Btuh – 4881 Btuh

= 71,119 Btuh

Determine net heating capacity as follows:

Net Capacity= gross capacity + IFM heat

= 65,871 + 4881

= 70,752 Btuh

Enter the Electric Heating Capacities table (page 33) for the 50TFF012 at 400-3-50. The 19.3 kW heater at 400 v most closely satisfies the heating required.

19.3 x 3413 = 65,871 Btuh gross capacity

14

Performance data

COOLING CAPACITIES — SI

50TFF007 (17.6 kW)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

35

40

44

48

52

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

14.7

14.7

4.54

14.1

14.1

4.81

13.7

13.7

5.01

12.7

12.7

5.33

13

15.8

15.8

3.98

15.2

15.2

4.26

12.0

12.0

5.60

11.2

11.2

5.85

10.5

10.5

6.11

700/0.05

16.5

15.0

4.70

15.9

14.7

4.99

15.5

14.5

5.20

14.6

14.1

5.54

16

17.7

15.5

4.11

17.1

15.3

4.41

13.8

13.8

5.82

13.1

13.1

6.09

12.4

12.4

6.36

18.4

12.6

4.87

17.8

12.3

5.17

17.3

12.2

5.39

16.5

11.8

5.76

19

19.6

13.1

4.25

19.0

12.8

4.56

15.8

11.5

6.05

15.1

11.2

6.34

14.4

11.0

6.63

20.3

10.0

5.04

19.7

9.8

5.36

19.3

9.6

5.60

18.3

9.3

5.99

22

21.5

10.4

4.39

20.6

10.2

4.71

17.6

9.1

6.29

16.9

8.8

6.60

16.2

8.6

6.91

14.5

14.5

5.12

14.0

14.0

5.46

13.5

13.5

5.75

13.0

13.0

6.04

12.7

12.7

6.31

Air Entering Evaporator — L/s/BF

950/0.07

Air Entering Evaporator — Ewb (C)

13 16 19 22

16.8

16.8

4.08

16.2

16.2

4.38

15.6

15.6

4.66

15.0

15.0

4.92

18.7

18.1

4.21

18.1

17.9

4.51

17.5

17.5

4.82

16.9

16.9

5.10

20.7

14.9

4.35

20.1

14.7

4.66

19.4

14.5

4.98

18.8

14.3

5.29

22.6

11.6

4.49

22.0

11.4

4.82

21.3

11.2

5.15

20.7

11.0

5.48

16.4

16.4

5.31

15.6

15.6

5.68

15.1

15.1

5.97

14.5

14.5

6.26

13.9

13.9

6.56

18.2

14.1

5.52

17.3

13.7

5.90

16.7

13.4

6.20

15.9

13.1

6.50

15.3

12.8

6.81

20.2

10.9

5.73

19.2

10.6

6.13

18.5

10.3

6.45

17.7

10.0

6.76

16.9

9.8

7.08

16.6

16.6

4.74

16.2

16.2

5.05

15.8

15.8

5.28

15.4

15.4

5.68

13

17.4

17.4

4.12

17.0

17.0

4.43

15.1

15.1

5.99

14.8

14.8

6.31

14.4

14.4

6.62

1200/0.09

18.2

18.2

4.89

17.7

17.7

5.20

17.3

17.3

5.61

16.6

16.6

5.83

16

19.3

19.3

4.27

18.8

18.8

4.58

16.1

16.1

6.14

15.5

15.5

6.46

15.0

15.0

6.77

20.0

16.1

5.05

19.4

15.8

5.37

18.8

15.6

5.61

17.9

15.2

5.99

19

21.3

16.6

4.41

20.7

16.4

4.73

17.2

14.8

6.31

16.5

14.4

6.61

15.7

14.1

6.92

LEGEND AND NOTES FOR COOLING CAPACITY TABLES — SI

LEGEND

BF

— Bypass Factor

Edb

— Entering Dry Bulb Temperature (C)

Ewb

— Entering Wet Bulb Temperature (C)

kW

— Compressor Input (kW)

SHC — Sensible Heat Capacity (kW)

TC

— Total Capacity (kW)

NOTES:

1. Ratings are gross, and do not account for the effects of the evaporator-fan motor power and heat.

2. Direct interpolation is permissible. Do not extrapolate.

3. SHC is based on 26.7 C db temperature of air entering the unit. At any other temperature, correct the SHC read from the table of cooling capacities as follows:

Corrected SHC kW

= SHC + [1.23 x 10

–3 x (1 – BF) x (C db

– 26.7) x L/s]

Observe the rule of sign. Above 26.7 C, SHC correction will be positive; add it to SHC. Below 26.7 C, SHC correction will be negative; subtract it from SHC.

4. Formulas:

C ldb

= C edb

–

SHC kW x 1000

1.23 x L/s

Leaving wet bulb = wet bulb temperature corresponding to enthalpy of air leaving coil (h lwb

).

h lwb

= h ewb

–

TC kW x 1000

1.20 x L/s

Where h ewb is enthalpy of air entering evaporator coil (kJ/kg).

21.9

12.2

5.21

21.2

12.0

5.55

20.7

11.9

5.80

19.7

11.6

6.20

22

23.3

12.6

4.55

22.6

12.4

4.88

18.9

11.4

6.52

18.1

11.1

6.84

17.3

10.9

7.16

15

Performance data (cont)

COOLING CAPACITIES — SI (cont)

50TFF008 (21.5 kW)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

36

40

44

48

52

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

18.6

18.4

5.49

18.0

17.8

5.77

17.3

17.2

6.09

16.6

16.6

6.40

14

19.5

19.4

5.02

19.1

18.9

5.25

15.9

15.9

6.71

15.2

15.2

7.02

14.4

14.4

7.33

850/0.05

21.3

15.7

5.78

20.6

15.4

6.04

19.63

15.0

6.34

18.7

14.6

6.63

18

22.5

16.2

5.34

21.9

16.0

5.56

17.7

14.2

6.92

16.7

13.8

7.20

15.6

13.3

7.47

19.8

17.3

5.61

19.1

16.9

5.88

18.2

16.4

6.18

18.3

15.9

6.48

16

20.9

18.0

5.16

20.4

17.7

5.38

16.4

15.4

6.77

15.5

14.9

7.05

14.5

14.3

7.33

Air Entering Evaporator — L/s BF

19.4

12.5

7.13

18.3

12.1

7.41

17.3

11.7

7.67

23.0

13.9

5.98

22.2

13.6

6.25

21.3

13.2

6.55

20.3

12.8

6.84


20 22 14 16

24.3

14.3

5.54

23.7

14.1

5.76

26.0

12.3

5.72

25.4

12.1

5.96

21.6

21.4

5.28

21.0

21.0

5.51

22.3

20.5

5.37

21.7

20.2

5.58

24.8

11.9

6.19

23.9

11.6

6.47

23.0

11.3

6.77

22.0

10.9

7.07

20.5

20.5

5.74

19.9

19.8

6.03

18.2

19.1

6.33

18.4

18.4

6.65

21.1

19.8

5.8

20.3

19.4

6.07

19.4

18.9

6.37

18.6

18.3

6.67

21.0

10.6

7.36

19.9

10.2

7.64

18.8

9.9

7.91

17.7

17.7

6.97

16.9

16.9

7.27

16.1

16.1

7.56

17.7

17.6

6.97

16.9

16.9

7.27

16.1

16.1

7.57

1130/0.075

22.4

18.0

5.96

21.5

17.7

6.22

20.6

17.3

6.61

19.6

16.9

6.81

18

23.7

18.5

5.52

23.1

18.3

5.74

18.7

16.4

7.10

17.7

15.8

7.39

16.8

15.2

7.67

24.1

15.7

6.15

23.2

15.4

6.43

22.3

15.0

6.73

21.3

14.7

7.02

20

25.3

16.1

5.70

24.7

15.9

5.92

20.2

14.3

7.30

19.1

13.9

7.57

18.0

13.5

7.85

50TFF008 (21.5 kW) (cont)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

36

40

44

48

52

20.2

20.2

6.07

19.5

19.4

6.39

18.7

18.7

6.69

17.9

17.9

7.01

14

21.8

21.8

5.33

21.3

21.2

5.55

20.8

20.7

5.78

17.1

17.1

7.31

16.3

16.3

7.61

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

1180/0.075

21.7

18.1

6.25

20.7

17.7

6.55

19.8

17.2

6.83

18.8

16.7

7.13

18

23.9

18.9

5.55

23.3

18.7

5.77

22.5

18.4

5.98

17.9

16.1

7.42

16.9

15.4

7.70

20.5

19.8

6.11

19.6

19.2

6.41

18.7

18.6

6.70

17.9

17.9

7.01

16

22.5

20.9

5.41

21.9

20.6

5.62

21.2

20.2

5.84

17.1

17.1

7.31

16.3

16.3

7.61


25.2

13.0

6.66

24.1

12.7

6.96

23.1

12.4

7.26

22.0

12.1

7.55

22

27.1

13.6

5.91

26.5

13.5

6.14

25.9

13.3

6.38

20.8

11.7

7.83

19.6

11.4

8.1


23.4

15.7

6.45

22.4

15.3

6.75

21.3

15.0

7.04

20.3

14.6

7.33

20

25.5

16.4

5.73

24.9

16.2

5.96

24.2

16.0

6.17

19.2

14.2

7.59

18.0

13.9

7.87

21.2

21.2

6.23

20.4

20.4

6.54

19.6

19.6

6.86

18.8

18.8

7.16

14

22.9

22.8

5.49

22.4

22.3

5.72

21.8

21.8

5.94

17.9

17.9

7.46

17.1

17.1

7.76

21.2

21.0

6.23

20.4

20.4

6.54

19.6

19.6

6.86

18.8

18.8

7.16

16

23.1

22.4

5.51

22.5

22.0

5.73

21.9

21.7

5.96

17.9

17.9

7.47

17.1

17.1

7.77

1400/0.095

22.2

19.5

6.36

20.7

19.0

6.66

20.4

18.4

6.95

19.4

17.8

7.25

18

24.3

20.5

5.65

23.7

20.2

5.86

23.1

20.0

6.08

18.5

17.2

7.54

17.4

16.5

7.82

23.8

17.0

6.54

22.8

16.6

6.84

21.7

16.3

7.12

20.6

15.9

7.41

20

26.1

17.7

5.83

25.4

17.5

6.05

24.7

17.3

6.28

19.5

15.5

7.69

18.3

15.1

7.95

25.6

13.9

6.74

24.6

13.6

7.05

23.4

13.3

7.34

22.3

13.0

7.64

22

27.7

14.5

5.99

27.0

14.3

6.22

26.4

14.1

6.46

21.2

12.7

7.92

19.9

12.3

8.18

25.9

13.1

6.36

25.0

12.9

6.64

24.0

12.5

6.94

23.0

12.3

7.24

22

27.0

13.4

5.88

26.4

13.3

6.12

21.9

11.9

7.53

20.7

11.5

7.81

19.6

11.2

8.08

16


50TFF009 (24.3 kW)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

35

40

44

48

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

22.3

21.7

7.32

21.7

21.1

7.56

20.7

20.1

7.96

19.9

19.3

8.29

19.1

18.5

8.62

13

24.7

24.1

6.25

24.0

23.4

6.61

23.0

22.5

7.00

1200/0.07

22.4

21.4

7.36

21.7

20.9

7.59

20.7

20.1

7.96

19.9

19.3

8.29

19.1

18.5

8.62

16

25.2

23.2

6.38

24.3

22.8

6.69

23.2

22.0

7.06

25.5

18.4

7.71

24.6

17.9

8.01

23.1

17.4

8.44

22.0

16.9

8.78

20.8

16.4

9.05

19

28.4

19.3

6.60

27.5

19.0

6.96

26.5

18.7

7.33

28.7

14.3

7.87

28.0

14.1

8.17

26.7

13.6

8.66

25.5

13.2

9.04

24.3

12.8

9.42

22

30.8

15.0

6.70

30.3

14.8

7.09

29.6

14.6

7.48

23.7

22.8

7.72

23.1

22.2

8.00

22.0

21.2

8.42

21.2

20.3

8.75

20.3

19.4

9.08


1400/.08


13

26.0

25.2

6.60

25.5

24.6

6.97

24.7

23.9

7.34

16

26.2

24.6

6.68

25.5

24.3

7.02

24.7

23.9

7.34

19

29.1

20.5

6.97

28.4

20.4

7.35

27.5

20.1

7.71

22

31.5

15.5

7.06

30.9

15.4

7.46

30.3

15.2

7.86

23.7

22.8

7.72

23.0

22.2

7.99

22.0

21.2

8.41

21.2

20.3

8.75

20.3

19.4

9.08

26.3

19.7

8.09

25.6

19.5

8.37

23.9

18.8

8.82

22.7

18.3

9.15

21.5

17.8

9.48

29.4

15.0

8.25

28.7

14.8

8.57

27.4

14.3

9.06

26.3

14.0

9.44

25.0

13.5

9.83

25.6

24.2

8.37

25.0

23.6

8.66

23.6

22.2

9.15

22.7

21.3

9.52

21.8

20.4

9.88

13

27.9

26.5

7.25

27.1

25.7

7.61

26.4

25.0

7.98

1700/0.11

25.6

24.2

8.36

25.0

23.6

8.65

23.6

22.2

9.14

22.7

21.3

9.51

21.8

20.4

9.87

16

27.9

26.5

7.25

27.1

25.8

7.60

26.4

25.0

7.97

27.3

21.5

8.77

26.4

21.2

9.03

25.0

20.7

9.47

23.7

20.2

9.80

22.3

19.5

10.10

19

29.9

22.0

7.66

29.3

22.0

8.04

28.4

21.8

8.42

30.2

15.7

8.96

29.4

15.4

9.27

28.2

15.1

9.78

27.0

14.8

10.17

25.8

14.4

10.56

22

32.2

16.0

7.73

31.6

16.0

8.14

31.0

15.9

8.55


LEGEND

BF

— Bypass Factor

Edb


Ewb


kW



TC


NOTES:




Corrected SHC kW

= SHC + [1.23 x 10

–3 x (1 – BF) x (C db

– 26.7) x L/s]


4. Formulas:

C ldb

= C edb

–

SHC kW x 1000

1.23 x L/s


).

h lwb

= h ewb

–

TC kW x 1000

1.20 x L/s


17



50TFF012 (29.2 kW)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

36

40

44

48

52

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

24.7

24.6

7.61

23.6

23.5

8.03

22.4

22.3

8.47

21.1

21.1

8.95

14

26.6

26.4

6.82

25.8

25.6

7.20

20.0

20.0

9.40

19.1

10.1

9.89

18.3

18.3

10.37

1140/0.08

28.2

21.7

8.11

26.6

21.1

8.31

25.0

20.3

8.73

23.4

19.6

9.15

18

30.5

22.8

7.17

29.4

22.3

7.54

21.7

18.7

9.60

20.3

17.9

10.06

19.1

17.2

10.52

25.8

23.5

7.93

24.5

22.7

8.13

23.0

21.8

8.53

21.5

20.9

8.97

16

28.2

24.8

6.98

27.0

24.2

7.34

20.1

19.9

9.40

19.1

19.1

9.89

18.3

18.3

10.37


24.4

16.8

9.86

22.6

16.2

10.32

20.9

15.5

10.77

30.8

19.4

8.32

29.4

18.8

8.53

27.9

18.2

8.96

26.2

17.5

9.40


20 22 14 16

33.1

20.3

7.35

32.1

19.9

7.73

34.7

17.3

7.42

33.8

16.8

7.82

30.5

30.4

7.09

29.6

29.5

7.47

31.4

29.3

7.17

30.4

28.7

7.53

32.8

16.4

8.45

31.8

16.1

8.67

30.7

17.8

9.15

29.5

15.3

9.64

28.5

28.5

8.09

27.3

27.3

8.30

26.1

26.0

8.74

24.7

24.7

9.20

29.1

27.9

8.12

27.7

27.0

8.32

26.3

26.0

8.74

24.7

24.7

9.20

27.9

14.8

10.11

26.0

14.2

10.59

24.0

13.5

11.07

23.1

23.1

9.70

21.5

21.5

10.22

20.0

20.0

10.74

23.1

23.1

9.71

21.5

21.5

10.22

20.0

20.0

10.74

1520/0.105

30.7

25.4

8.26

29.4

24.8

8.47

27.9

24.1

8.89

26.4

23.3

9.34

18

32.7

26.2

7.27

31.8

25.9

7.65

24.4

22.0

9.82

22.4

20.7

10.31

20.4

18.4

10.81

32.6

21.9

8.46

31.5

21.6

8.67

30.1

21.2

9.11

28.7

20.7

9.56

20

34.3

22.2

7.39

33.5

22.2

7.80

26.6

20.0

10.03

24.3

19.1

10.50

21.9

18.1

10.98

34.4

18.2

8.64

33.3

17.8

8.85

32.0

17.4

9.30

30.8

17.2

9.80

22

36.3

18.7

7.60

35.3

18.4

7.99

29.4

16.7

10.29

27.6

16.2

10.79

25.5

15.5

11.28

50TFF012 (29.2 kW) (cont)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

36

40

44

48

52

29.1

29.1

8.40

28.1

27.9

8.87

26.5

14.7

9.37

24.8

24.8

9.87

14

31.5

31.4

7.12

30.8

30.8

7.53

30.0

30.0

7.95

23.0

23.0

10.39

21.3

21.3

10.93

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

29.1

29.0

8.41

28.0

28.0

8.87

26.5

26.5

9.36

24.8

24.8

9.87

16

31.9

30.6

7.16

31.0

30.1

7.54

30.1

29.6

7.97

23.0

23.0

10.39

21.3

21.3

10.93

30.3

26.7

8.54

29.1

26.1

8.89

27.7

25.1

9.46

25.7

23.8

9.96

18

33.3

27.8

7.30

32.4

27.4

7.68

31.4

27.2

8.11

23.7

22.4

10.45

21.6

21.0

10.95

1800/0.125


34.0

18.9

8.95

32.8

18.5

9.40

31.5

18.3

9.88

30.0

18.0

10.36

22

37.2

19.9

7.70

36.2

19.6

8.10

35.2

19.3

8.51

28.3

17.5

10.86

26.5

17.0

11.38


32.1

23.1

8.73

30.8

22.8

9.17

29.5

22.5

9.64

27.5

21.8

10.12

20

35.3

24.0

7.50

34.2

23.6

7.88

33.2

23.4

8.30

25.3

20.9

10.59

22.8

19.9

11.07

29.4

29.4

8.44

28.3

28.3

8.91

27.0

26.9

9.41

25.2

25.2

9.92

14

31.7

31.7

7.15

31.0

31.0

7.54

30.3

30.2

7.99

23.4

23.4

10.43

21.6

21.6

10.97

29.4

29.4

8.44

28.3

28.3

8.91

27.0

27.0

9.40

25.2

25.2

9.92

16

23.1

31.1

7.18

31.2

30.5

7.57

30.4

30.1

7.99

23.4

23.4

10.43

21.6

21.6

10.97

1880/0.13

30.5

27.1

8.56

29.3

26.5

9.01

28.0

25.6

9.50

26.1

24.4

9.99

18

33.5

28.3

7.32

32.5

27.9

7.71

31.6

27.6

8.13

24.0

23.0

10.49

21.8

21.4

10.99

32.2

23.5

8.75

31.0

23.3

9.19

29.7

23.0

9.66

27.7

22.3

10.13

20

35.3

24.4

7.51

34.4

24.0

7.90

33.3

23.7

8.31

25.5

21.4

10.61

23.0

20.4

11.10

34.0

19.2

8.95

32.9

18.9

9.42

31.6

18.6

9.89

30.1

18.2

10.38

22

37.3

20.2

7.71

36.2

19.7

8.09

35.0

19.5

8.51

28.4

17.8

10.90

26.7

17.4

11.41

18

50TFF014 (35.9 kW)

Temp (C)

Air Entering

Condenser

(Edb)

20

24

28

32

35

40

44

48

52

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

29.4

29.4

9.78

26.7

26.7

10.20

24.7

24.7

10.52

21.1

21.1

11.10

13

34.7

34.7

8.92

32.1

32.1

9.34

20.5

20.5

11.62

20.4

20.4

12.15

20.1

20.1

12.67

1500/0.13

33.6

31.9

9.94

31.5

30.9

10.42

29.9

29.7

10.80

26.8

26.8

11.40

16

38.0

33.8

8.99

35.8

32.8

9.46

25.3

25.3

11.93

24.1

24.1

12.45

22.8

22.8

12.98

37.9

26.7

10.12

36.2

26.0

10.64

34.9

25.5

11.03

32.3

24.4

11.71

19

41.4

28.1

9.08

39.6

27.4

9.60

30.2

23.5

12.25

27.9

27.9

12.78

25.8

21.4

13.31


41.6

21.1

10.27

40.2

20.7

10.85

39.1

20.3

11.30

37.1

19.7

12.00

22

44.4

22.0

9.13

43.0

21.6

9.70

35.2

19.1

12.58

33.2

33.2

13.17

31.3

17.8

13.75

29.2

29.2

10.77

26.9

26.9

11.42

25.7

25.7

12.05

24.5

24.5

12.68

23.3

23.3

13.34


2000/0.17


13 16 19 22

37.0

37.0

9.00

34.8

34.8

9.47

32.9

32.9

9.95

30.8

30.8

10.40

40.0

39.9

9.06

38.2

38.2

9.57

36.3

36.3

10.08

34.5

34.5

10.59

43.2

31.7

9.13

41.6

31.1

9.68

40.0

30.5

10.22

38.3

29.9

10.76

46.3

24.0

9.22

44.9

23.7

9.80

43.4

23.3

10.39

42.0

22.9

10.96

33.1

33.1

11.00

30.8

30.8

11.64

28.8

28.8

12.24

26.9

26.9

12.84

24.9

24.9

13.43

37.0

29.4

11.18

34.7

28.3

11.88

32.2

27.1

12.44

29.6

25.8

13.00

27.0

24.5

13.56

40.9

22.7

11.40

38.8

22.1

12.13

36.9

21.5

12.73

34.9

21.0

13.33

33.1

20.3

13.93

34.4

34.4

10.15

33.0

33.0

10.49

31.4

31.4

10.40

30.5

30.5

11.64

13

36.6

36.6

9.05

35.5

35.5

9.60

29.1

29.1

12.26

27.7

27.7

12.88

26.2

26.0

13.49

2350/0.21

37.4

37.4

10.10

36.0

36.0

10.65

35.0

35.0

11.07

53.1

33.1

11.79

16

40.1

40.1

9.10

38.7

38.7

9.63

31.0

31.0

12.38

29.0

29.0

12.97

26.9

26.8

13.57

40.6

32.5

10.25

39.1

31.9

10.82

38.0

31.5

11.25

35.8

30.6

11.96

19

43.6

33.5

9.15

42.1

32.4

9.74

33.4

29.4

12.52

30.8

28.1

13.10

28.2

26.7

13.67

44.0

24.6

10.42

42.7

24.3

11.01

41.6

24.2

11.47

39.5

23.7

12.20

22

46.7

25.0

9.25

45.5

24.8

9.84

37.6

23.2

12.79

35.5

22.6

13.39

33.5

22.1

13.97


LEGEND

BF

— Bypass Factor

Edb


Ewb


kW



TC


NOTES:




Corrected SHC kW

= SHC + [1.23 x 10

–3 x (1 – BF) x (C db

– 26.7) x L/s]


4. Formulas:

C ldb

= C edb

–

SHC kW x 1000

1.23 x L/s


).

h lwb

= h ewb

–

TC kW x 1000

1.20 x L/s


19


COOLING CAPACITIES — ENGLISH

50TFF007 (5 TONS)

Temp (F)

Air Entering

Condenser

(Edb)

75

85

95

105

115

125

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

51.0

46.5

5.64

47.6

45.0

6.02

44.7

43.5

6.39

62

60.0

50.5

4.44

57.2

49.4

4.85

54.4

48.1

5.25

56.9

39.1

5.83

53.7

37.8

6.24

50.3

36.6

6.65

67

66.0

42.6

4.57

63.2

41.6

5.00

60.2

40.4

5.43

1500/0.05

62.9

31.2

6.05

59.5

30.0

6.48

55.8

28.8

6.90

72

72.1

34.5

4.71

69.4

33.5

5.17

66.3

32.4

5.62

Air Entering Evaporator — Cfm/BF

2000/0.07

Air Entering Evaporator — Ewb (F)

62

63.0

58.2

4.52

60.3

57.3

4.96

57.1

55.6

5.35

67

69.2

48.5

4.66

66.3

47.5

5.11

62.9

46.4

5.54

72

76.1

38.3

4.84

72.4

37.1

5.28

69.4

36.2

5.75

62

65.2

64.3

4.58

62.6

62.6

5.03

60.0

60.0

5.47

54.2

53.5

5.76

51.4

51.3

6.17

48.7

48.7

6.61

59.5

45.2

5.97

56.0

44.0

6.39

52.3

42.5

6.77

65.7

35.0

6.19

62.0

33.8

6.63

58.0

32.4

7.03

57.2

57.2

5.90

54.4

54.4

6.33

51.6

51.6

6.79

2500/0.09

61.1

50.7

6.05

57.4

49.4

6.48

53.5

47.7

6.87

67

71.5

54.0

4.74

68.0

52.8

5.18

64.7

52.0

5.62

67.1

38.2

6.26

63.3

37.0

6.70

59.2

35.9

7.12

72

78.1

41.3

4.90

74.3

39.9

5.34

70.9

39.3

5.81

50TFF008 (6.1 TONS)

Temp (F)

Air Entering

Condenser

(Edb)

75

85

95

105

115

125

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

60.4

55.7

6.59

55.9

53.2

6.99

51.1

50.4

7.37

62

71.9

56.3

5.47

69.0

59.7

5.77

64.9

57.9

6.32

1950/0.06

68.1

47.2

6.86

63.4

45.4

7.26

58.4

43.5

7.63

67

80.1

46.6

5.73

77.1

50.5

6.04

72.7

48.8

6.61

76.2

37.5

7.19

71.1

35.9

7.58

65.8

34.1

7.95

72

88.3

55.1

6.02

85.4

40.6

6.34

80.8

39.1

6.54

63.0

62.2

6.71

59.0

59.0

7.13

55.1

55.0

7.54

62

74.9

62.3

5.60

71.7

66.6

5.90

67.4

64.6

6.45


2400/0.075

2500/0.075


67 72 62 67

83.0

50.5

5.86

79.8

55.6

6.17

75.2

54.0

6.75

90.9

57.0

6.14

88.2

43.6

6.47

83.5

42.1

6.60

75.3

63.6

5.64

72.2

68.0

5.93

67.8

65.8

6.48

83.6

51.2

5.90

80.2

56.6

6.19

75.6

55.1

6.76

70.4

52.4

7.00

65.4

50.6

7.39

60.0

48.6

7.75

78.6

40.8

7.32

73.2

39.0

7.71

67.7

37.3

8.08

63.5

63.2

6.74

59.7

59.7

7.17

55.8

55.8

7.58

70.8

53.4

7.02

65.6

51.6

7.41

60.3

49.8

6.77

78.8

41.3

7.34

73.5

39.6

7.72

57.9

37.9

8.10

72

91.3

60.4

6.14

88.5

44.1

6.49

83.8

42.7

6.69

66.7

66.7

6.90

62.5

62.7

7.34

58.7

58.6

7.75

62

77.4

69.1

5.74

74.3

73.8

6.05

70.7

70.5

6.60

3000/0.095

72.0

58.6

7.11

66.8

56.8

7.49

61.3

54.8

7.87

67

85.2

55.3

6.00

82.0

62.0

6.31

77.1

60.2

6.86

80.1

44.1

7.40

75.0

43.0

7.83

69.0

41.3

8.20

72

92.9

23.7

6.24

90.0

47.0

6.57

85.5

45.9

3.46

50TFF009 (6.9 TONS)

Temp (F)

Air Entering

Condenser

(Edb)

75

85

95

105

115

125

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

62

79.2

65.7

6.44

74.6

63.7

6.85

70.2

61.6

7.26

65.5

59.3

7.64

60.7

56.5

8.01

45.4

53.6

8.43

2000/0.07

67

90.1

56.4

6.56

85.8

54.8

7.06

80.4

52.5

7.58

75.6

50.5

8.05

70.5

48.5

8.47

65.1

46.3

8.90

72

99.5

46.2

6.68

96.0

44.9

7.21

91.4

43.2

7.75

86.8

41.6

8.28

81.7

39.8

8.81

75.7

37.5

9.35

62

85.0

74.9

6.76

79.4

72.2

7.25

74.7

69.6

7.62

70.4

55.4

8.03

66.0

63.5

8.45

61.8

60.0

8.88


2500/.08

3000/0.10


67

95.2

62.5

6.93

72

103.7

49.2

7.06

62

88.9

81.9

7.12

67

98.5

67.3

7.39

90.6

60.8

7.46

82.9

59.2

7.98

100.2

48.1

7.59

96.1

46.8

8.15

84.4

78.9

7.59

79.1

75.3

8.08

94.3

66.0

7.90

84.1

64.4

8.43

79.9

56.7

8.50

74.4

54.5

8.96

68.7

52.4

9.39

91.0

45.0

8.69

85.6

43.2

9.21

79.9

41.3

9.77

75.1

72.2

8.50

70.9

68.0

8.96

66.6

63.7

9.43

83.0

61.8

8.98

77.3

59.8

9.44

71.3

57.6

9.88

72

106.4

51.4

7.49

103.0

50.5

8.04

98.9

49.3

8.60

93.9

47.7

9.16

88.4

45.9

9.69

82.6

44.0

10.26

62

92.3

86.0

7.56

88.3

83.9

8.01

84.5

80.1

8.53

79.3

75.0

9.07

75.0

70.6

9.57

70.6

66.2

10.06

3500/0.11

67

100.9

71.2

7.93

96.7

70.3

8.45

91.5

68.7

8.99

85.9

67.0

9.48

79.5

64.3

10.00

73.3

61.9

10.41

72

108.4

52.8

8.03

105.0

52.2

8.59

100.7

51.0

9.15

95.9

49.7

9.71

90.5

48.0

10.27

84.5

46.1

10.81

20

COOLING CAPACITIES — ENGLISH (cont)

50TFF012 (8.3 TONS)

Temp (F)

Air Entering

Condenser

(Edb)

75

85

95

105

115

125

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

74.2

72.1

9.06

67.4

67.3

9.71

63.2

63.2

10.37

62

95.1

77.4

7.39

88.9

79.9

7.91

81.8

76.4

8.64

2500/0.09

86.4

62.8

9.42

77.2

59.1

10.04

69.2

56.0

10.68

67

108.3

64.2

7.69

102.3

69.3

8.24

94.7

66.2

8.94

101.8

51.8

9.74

94.2

49.5

10.42

84.4

46.0

11.09

72

116.7

77.2

7.83

112.0

55.1

8.42

107.2

53.8

8.85

83.4

83.4

9.26

75.6

75.6

9.97

68.5

68.5

10.69

62

104.5

87.6

7.55

98.5

93.5

8.08

91.2

89.5

8.77


3200/0.105

3800/0.12


67

112.8

70.1

7.74

108.3

77.7

8.34

102.5

76.0

9.08

72

121.4

82.0

8.00

116.9

60.0

8.60

110.9

58.1

8.96

62

106.2

101.9

7.5

101.8

100.3

8.10

96.8

96.7

8.8

67

114.9

74.6

7.81

110.3

83.4

8.39

104.4

82.1

9.15

95.2

73.4

9.56

83.8

68.9

10.19

71.8

64.3

10.85

105.3

56.9

9.88

99.0

55.1

10.59

88.8

51.9

11.27

89.7

89.7

9.4

81.3

81.2

10.1

73.1

73.0

10.9

98.2

80.5

9.65

87.4

76.3

10.28

75.0

70.9

10.95

107.6

60.8

9.96

100.6

59.0

10.66

92.3

56.9

11.37

72

124.4

84.7

8.10

119.2

63.7

8.69

113.7

61.4

9.03

91.3

91.3

9.48

82.8

82.7

10.19

74.2

74.2

10.93

62

107.0

95.0

7.56

102.7

102.2

8.15

98.0

98.0

8.91

4000/0.13

98.7

82.6

9.66

88.4

78.7

10.31

76.0

73.0

10.97

67

115.8

75.9

7.84

110.8

85.1

8.41

105.0

83.9

9.17

108.0

61.7

9.98

101.0

60.1

10.68

93.0

58.4

11.41

72

124.2

32.4

8.10

119.0

64.4

8.67

114.2

63.2

4.60

50TFF014 (10.2 TONS)

Temp (F)

Air Entering

Condenser

(Edb)

75

85

95

105

115

125

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

TC

SHC kW

62

125.1

107.5

9.48

115.4

103.1

10.15

105.5

98.9

10.83

94.1

92.7

11.54

86.9

86.8

12.26

79.9

79.9

13.00

67

137.3

90.6

9.60

129.6

87.7

10.33

122.0

84.8

11.06

112.2

81.2

11.83

100.4

76.4

12.55

88.5

71.7

13.29

3150/0.13

140.9

69.8

10.49

134.4

67.8

11.30

126.9

65.3

12.10

117.9

62.5

12.91

108.8

59.6

13.72


4200/0.17

72

147.5

71.7

9.69


62 67 72

133.0

125.8

9.58

143.5

101.9

9.67

154.1

78.7

9.79

62

135.1

134.0

9.59

124.4

120.8

10.29

115.8

115.7

11.01

106.5

106.5

11.76

96.5

96.5

12.58

86.4

86.3

13.40

135.9

99.8

10.43

128.2

97.8

11.20

118.9

94.8

11.98

105.3

89.8

12.74

91.7

84.8

13.49

147.3

77.0

10.61

140.4

75.3

11.41

132.4

73.2

12.22

123.7

70.5

13.07

115.0

67.8

13.91

128.9

128.3

10.34

122.7

122.7

11.11

115.2

115.2

11.92

104.6

104.6

12.73

94.1

99.1

13.55

5100/0.21

67

145.6

109.7

9.69

138.6

108.6

10.48

131.5

107.6

11.27

122.6

105.6

12.06

109.2

100.4

12.83

96.0

94.6

13.62

72

156.1

83.1

9.83

149.9

82.1

10.66

143.6

81.2

11.47

135.8

79.4

12.31

126.2

77.2

13.14

116.5

74.8

13.96

LEGEND AND NOTES FOR COOLING CAPACITY TABLES — ENGLISH

LEGEND

BF —

Bypass Factor

Edb —

Entering Dry Bulb Temperature (F)

Ewb —

Entering Wet Bulb Temperature (F)

kW —

Compressor Motor Power Input

SHC —

Sensible Heat Capacity (1000 Btuh)

TC —

Total Capacity (1000 Btuh)

NOTES:



3. SHC is based on 80 F db temperature of air entering the unit. At any other temperature, correct the SHC read from the table of cooling capacities as follows:

Corrected SHC

Btuh

= SHC + [1.10 x (1 – BF) x (F db

– 80) x cfm]

Observe the rule of sign. Above 80 F, SHC correction will be positive; add it to SHC. Below 80 F, SHC correction will be negative; subtract it from

SHC.

4. Formulas:

F ldb

= F edb

–

SHC

Btuh

1.09 x cfm


).

h lwb

= h ewb

–

TC

Btuh

4.50 x cfm


21


FAN PERFORMANCE (SI) — VERTICAL DISCHARGE UNITS

50TFF007 (17.6 kW) — STANDARD MOTOR (BELT DRIVE)

Airflow

(L/s)

700

750

800

850

900

950

1000

1050

1100

1150

1200

25 50 100

External Static Pressure (Pa)

150 200 250 300 350 400

R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW

12.1

0.30

13.1

0.36

14.8

0.48

16.4

0.61

17.8

0.75

18.7

0.85

18.7

0.83

17.8

0.67

16.0

0.44

12.8

0.36

13.7

0.42

15.5

0.56

17.0

0.68

18.4

0.84

19.5

0.98

20.1

1.05

20.0

1.23

19.1

0.85

13.5

0.42

14.4

0.49

16.1

0.63

17.5

0.77

18.9

0.93

20.1

1.09

21.1

1.22

21.5

1.28

21.3

1.22

14.2

0.56

15.1

0.61

16.7

0.74

18.1

0.85

19.4

1.00

20.6

1.15

21.7

1.31

22.9

1.50

23.9

1.69

14.9

0.63

15.8

0.70

17.3

0.82

18.7

0.95

19.9

1.10

21.1

1.26

22.2

1.42

23.3

1.62

24.4

1.80

15.7

0.72

16.5

0.78

17.9

0.91

19.3

1.06

20.5

1.21

21.7

1.37

22.8

1.55

23.8

1.73

24.8

1.93

16.4

0.81

17.2

0.88

18.6

1.02

19.9

1.18

21.1

1.34

22.2

1.50

23.3

1.69

24.3

1.86

25.2

2.06

17.2

0.92

17.9

0.99

19.2

1.13

20.6

1.30

21.7

1.48

22.8

1.64

23.8

1.83

24.9

2.01

25.7

2.21

18.0

1.03

18.6

1.10

19.9

1.26

21.2

1.44

22.3

1.63

23.4

1.79

24.4

1.98

25.4

2.18

26.3

2.38

18.7

1.17

19.2

1.23

20.6

1.41

21.8

1.58

23.0

1.78

24.0

1.97

24.9

2.14

25.9

2.34

19.4

1.23

19.8

1.36

21.3

1.55

22.4

1.72

23.6

1.92

24.6

2.12

25.5

2.29

— —

—

—

—

—

LEGEND

BkW — Fan Input kW x Motor Efficiency

kW

— Kilowatt Input to Motor

NOTES:

1. Boldface indicates field-supplied drive required (see Note 3).

2.

indicates field-supplied motor and drive required.

3. Factory-shipped drive range is 15.50 to 20.08 r/s. Other r/s’s may require a field-supplied drive.

4. Values include losses for filters, unit casing, and wet coils.

5. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the kW ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Evaporator-Fan Motor Performance table on page 30 or additional information.

6. Use of a field-supplied motor may affect wire sizing. Contact your

Carrier representative to verify.

7. To convert kW to bkW:

BkW = kW x Motor Efficiency

Motor Efficiency: .81

Maximum Continuous kW: 2.12

8. Interpolation is permissible. Do not extrapolate.

9. Static pressure losses (i.e., economizer, electric heater) must be added to external static pressure before entering Fan Performance table.

50TFF008,009 (21.5 AND 24.3 kW) — STANDARD MOTOR (BELT DRIVE)


Airflow

(L/s)

50 100 150 200 250 300 350 400 450 500

R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW

800

900

1000

1100

1200

1300

1400

1500

7.0

0.27

9.0

0.45

9.6

0.53

11.0

0.70

12.0

1.86

13.1

1.03

13.9

1.25

15.0

1.74

15.5

1.96

16.6

2.45

7.5

0.37

9.3

0.55

10.1

0.66

11.4

0.84

12.3

1.02

13.4

1.19

14.2

1.43

15.3

1.86

15.8

2.10

16.8

2.55

8.1

0.47

9.7

0.65

10.6

0.79

11.8

0.98

12.7

1.18

13.7

1.37

14.5

1.61

15.5

1.98

16.1

2.24

17.0

2.65

8.7

0.57

10.1

0.75

11.1

0.92

12.2

1.12

13.1

1.34

14.0

1.55

14.8

1.79

15.7

2.10

16.4

2.38

17.2

2.75

9.3

0.67

10.5

0.85

11.6

1.05

12.6

1.26

13.5

1.50

14.3

1.73

15.1

1.97

15.9

2.22

16.7

2.52

17.4

2.85

9.8

0.80

11.0

0.99

12.1

1.21

13.0

1.43

13.9

1.67

14.7

1.93

15.5

2.18

16.2

2.34

16.9

2.69

17.6

2.97

10.4

0.94

11.5

1.13

12.6

1.38

13.5

1.63

14.3

1.87

15.1

2.13

15.9

2.41

16.6

2.66

17.3

2.92

— —

11.0

1.11

12.0

1.31

13.0

1.58

13.9

1.85

14.7

2.11

15.5

2.36

16.3

2.64

17.0

2.91

— — — —

LEGEND


kW


NOTES:


2.













22

FAN PERFORMANCE (SI) — VERTICAL DISCHARGE UNITS (cont)


Airflow

(L/s)

1100

1200

1250

1300

1400

1500

1600

1700

1800

1900

50 100 150 200


250 300 350 400 450 500


7.6

0.36

9.2

0.46

10.2

0.56

11.3

0.70

12.7

0.74

12.9

0.80

13.6

0.90

14.4

1.09

15.2

1.20

16.2

1.37

7.9

0.39

9.3

0.51

10.4

0.63

11.4

0.75

12.8

0.86

13.0

0.90

13.9

1.02

14.6

1.13

15.4

1.38

16.3

1.60

8.2

0.42

9.5

0.55

10.6

0.69

11.5

0.80

12.9

1.92

13.1

1.02

14.2

1.14

14.8

1.38

15.6

1.65

16.5

1.83

8.4

0.56

9.6

0.78

10.8

0.88

11.7

0.96

12.6

1.09

13.3

1.18

14.3

1.34

15.1

1.58

15.9

1.81

16.7

2.03

8.8

0.66

10.0

0.86

11.1

0.98

12.0

1.10

12.9

1.22

13.7

1.33

14.5

1.47

15.4

1.67

16.2

1.90

16.8

2.12

9.2

0.74

10.4

0.95

11.5

1.09

12.4

1.23

13.2

1.35

14.0

1.49

14.8

1.57

15.6

1.77

16.4

1.97

17.1

2.21

9.7

0.85

10.8

1.07

11.8

1.22

12.8

1.37

13.6

1.49

14.4

1.65

15.1

1.79

15.8

1.94

16.5

2.09

17.3

2.31

10.2

0.96

11.2

1.19

12.2

1.35

13.1

1.51

13.9

1.66

14.7

1.81

15.4

1.98

16.1

2.13

16.7

2.29

17.4

2.46

10.6

1.09

11.7

1.34

12.6

1.51

13.5

1.67

14.3

1.85

15.0

2.01

15.7

2.18

16.4

2.36

17.1

2.54

17.7

2.71

11.1

1.24

12.1

1.49

13.0

1.67

13.9

1.86

14.7

2.04

15.4

2.23

16.1

2.40

16.8

2.59

17.4

2.80

18.0

2.99

LEGEND


kW


NOTES:


2.













1850

1900

1950

2000

2050

2100

2150

2200

1500

1550

1600

1650

1700

1750

1800

2250

2300

2350


Airflow

(L/s)

50 100 150 200


250 300 350 400 450 500


9.7

0.66

10.8

0.84

11.7

0.91

12.6

1.09

13.5

1.27

14.3

1.32

15.1

1.44

16.0

1.55

16.9

1.66

17.5

1.88

9.9

0.72

11.0

0.89

11.9

1.01

12.8

1.15

13.7

1.34

14.5

1.46

15.2

1.38

16.1

1.71

17.0

1.79

17.5

2.02

10.2

0.78

11.2

0.95

12.1

1.10

13.0

1.22

13.8

1.41

14.6

1.58

15.4

1.71

16.2

1.79

17.0

1.92

17.6

2.15

10.4

0.85

11.5

1.01

12.4

1.20

13.2

1.29

14.0

1.48

14.8

1.67

15.5

1.76

16.3

1.89

17.1

2.06

17.6

2.28

10.7

0.91

11.7

1.08

12.6

1.29

13.4

1.38

14.2

1.55

15.0

1.76

15.7

1.92

16.4

2.01

17.1

2.18

17.7

2.36

10.9

1.07

11.9

1.22

12.8

1.37

13.6

1.52

14.4

1.67

15.1

1.86

15.8

2.02

16.5

2.20

17.2

2.36

17.7

2.51

11.1

1.12

12.1

1.29

13.0

1.45

13.8

1.60

14.6

1.75

15.3

1.95

16.0

2.12

16.7

2.29

17.3

2.47

17.9

2.64

11.4

1.19

12.4

1.36

13.2

1.54

14.0

1.69

14.7

1.84

15.5

2.03

16.2

2.22

16.8

2.40

17.5

2.59

18.1

2.77

11.6

1.26

12.6

1.45

13.4

1.62

14.2

1.78

14.9

1.93

15.6

2.12

16.3

2.33

17.0

2.52

17.7

2.71

18.3

2.90

11.9

1.34

12.8

1.53

13.7

1.71

14.4

1.88

15.1

2.03

15.8

2.22

16.5

2.44

17.2

2.64

17.8

2.83

18.4

3.03

12.1

1.42

13.0

1.62

13.9

1.80

14.6

1.99

15.3

2.15

16.0

2.32

16.7

2.54

17.3

2.76

18.0

2.96

18.6

3.16

12.4

1.51

13.2

1.71

14.1

1.89

14.8

2.09

15.5

2.26

16.2

2.42

16.9

2.64

17.5

2.88

18.1

3.09

17.7

3.30

12.6

1.60

13.5

1.81

14.3

2.00

15.0

2.21

15.7

2.39

16.4

2.54

17.0

2.76

17.7

3.01

18.3

3.23

18.9

3.44

12.8

1.70

13.7

1.92

14.5

2.12

15.3

2.33

15.9

2.51

16.6

2.68

17.2

2.88

17.8

3.14

18.5

3.36

19.1

3.59

13.1

1.79

13.9

2.02

14.7

2.22

15.5

2.45

16.1

2.64

16.8

2.82

17.4

3.01

18.0

3.25

18.6

3.51

19.2

3.75

13.3

1.91

14.2

2.14

15.0

2.34

15.7

2.57

16.4

2.77

17.0

2.97

17.6

3.14

18.2

3.39

18.8

3.65

19.4

3.90

13.6

2.01

14.4

2.26

15.2

2.47

15.9

2.69

16.6

2.92

17.2

3.12

17.8

3.30

18.4

3.52

19.0

3.80

19.5

4.06

13.8

2.13

14.6

2.38

15.4

2.60

16.1

2.82

16.8

3.07

17.4

3.26

18.0

3.47

18.6

3.67

19.2

3.93

19.7

4.22

LEGEND


kW


NOTES:


2.













23


FAN PERFORMANCE (SI) — HORIZONTAL DISCHARGE UNITS


Airflow

(L/s)

700

750

800

850

900

950

1000

1050

1100

1150

1200

25 50 100


150 200 250 300 350 400

R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW R/s kW

10.8

0.25

12.0

0.30

13.9

0.41

15.6

0.53

17.0

0.67

18.4

0.83

19.8

1.04

21.2

1.27

21.9

1.38

11.5

0.30

12.5

0.35

14.4

0.47

16.1

0.60

17.5

0.74

18.8

0.88

20.1

1.09

21.5

1.31

22.3

1.42

12.1

0.35

13.1

0.41

14.9

0.53

16.5

0.67

17.9

0.81

19.2

0.96

20.4

1.12

21.7

1.36

22.6

1.50

12.8

0.49

13.7

0.53

15.4

0.64

17.0

0.76

18.3

0.89

19.6

1.03

20.8

1.19

21.9

1.35

23.0

1.52

13.4

0.54

14.3

0.59

15.9

0.71

17.5

0.84

18.8

0.97

20.0

1.11

21.3

1.28

22.3

1.44

23.4

1.63

14.1

0.61

14.9

0.65

16.5

0.78

17.9

0.92

19.3

1.06

20.5

1.20

21.7

1.37

22.8

1.55

23.8

1.73

14.7

0.67

15.5

0.73

17.0

0.85

18.4

1.00

19.8

1.15

21.0

1.31

22.1

1.48

23.2

1.66

24.2

1.85

15.4

0.75

16.1

0.82

17.6

0.95

18.9

1.10

20.3

1.27

21.5

1.43

22.5

1.60

23.6

1.78

24.6

1.98

16.1

0.85

16.7

0.91

18.2

1.05

19.5

1.21

20.8

1.37

22.0

1.56

23.0

1.73

24.0

1.91

25.1

2.10

16.8

0.95

17.4

1.01

18.7

1.17

20.0

1.31

21.2

1.49

22.4

1.69

23.5

1.87

24.5

2.05

25.5

2.23

17.5

1.05

18.1

1.10

19.6

1.25

20.5

1.41

21.8

1.61

22.8

1.77

24.1

2.01

25.0

2.20

26.0

2.39

LEGEND


kW


NOTES:


2.













50TFF008,009 (21.5 AND 24.3 kW) — STANDARD MOTOR (BELT DRIVE)


Airflow

(L/s)

50 100 150 200 250 300 350 400 450 500


800

900

1000

1100

1200

1300

1400

1500

6.5

0.29

8.2

0.35

9.4

0.53

10.8

0.71

11.9

0.86

12.7

1.10

13.3

1.31

13.3

1.55

13.5

1.80

13.8

2.08

7.1

0.36

8.6

0.45

9.8

0.62

11.1

0.81

12.1

0.95

13.0

1.23

13.6

1.45

13.7

1.70

13.9

1.95

14.2

2.19

7.5

0.43

9.0

0.55

10.2

0.73

11.4

0.92

12.4

1.09

13.3

1.36

13.9

1.59

14.1

1.85

14.3

2.11

14.6

2.35

7.9

0.50

9.4

0.65

10.6

0.84

11.7

1.03

12.7

1.23

13.6

1.49

14.4

1.73

14.9

2.00

15.1

2.27

15.0

2.53

8.3

0.57

9.8

0.75

11.0

0.95

12.0

1.14

13.0

1.37

13.9

1.62

14.8

1.87

15.5

2.15

16.0

2.43

16.4

2.71

8.8

0.66

10.2

0.85

11.3

1.06

12.4

1.29

13.3

1.52

14.2

1.77

15.0

2.04

15.8

2.32

16.5

2.60

17.1

2.88

9.2

0.76

10.6

0.97

11.7

1.19

12.7

1.45

13.7

1.69

14.5

1.93

15.3

2.21

16.1

2.50

16.9

2.78

— —

9.7

0.88

11.0

1.10

12.1

1.34

13.0

1.60

14.0

1.88

14.8

2.14

15.6

2.41

16.4

2.70

— — — —

LEGEND


kW


NOTES:


2.













24

FAN PERFORMANCE (SI) — HORIZONTAL DISCHARGE UNITS (cont)


Airflow

(L/s)

1100

1200

1250

1300

1400

1500

1600

1700

1800

1900

50 100 150 200


250 300 350 400 450 500


7.3

0.30

8.6

0.43

9.8

0.47

10.8

0.60

11.8

0.72

12.8

0.85

13.6

0.90

13.6

0.95

14.2

0.98

14.4

1.04

7.4

0.35

8.7

0.46

9.9

0.58

11.0

0.72

11.9

0.80

12.9

0.86

13.7

0.96

13.8

1.02

14.4

1.08

14.7

1.23

7.6

0.39

8.8

0.49

10.0

0.69

11.1

0.77

12.0

0.88

13.0

0.87

13.8

1.02

13.9

1.08

14.6

1.20

15.0

1.45

7.6

0.56

8.9

0.67

10.2

0.83

11.1

0.91

12.1

1.05

13.1

1.21

13.9

1.22

14.0

0.79

15.0

1.43

15.6

1.64

8.0

0.66

9.3

0.78

10.5

0.91

11.4

1.03

12.4

1.16

13.3

1.30

14.1

1.41

14.6

1.25

15.4

1.64

16.0

1.75

8.4

0.74

9.6

0.87

10.7

0.99

11.8

1.14

12.7

1.28

13.5

1.42

14.3

1.57

15.1

1.67

15.7

1.83

16.4

1.88

8.8

0.85

10.0

0.96

11.1

1.10

12.1

1.25

12.9

1.40

13.8

1.55

14.5

1.70

15.3

1.88

16.0

2.00

16.7

2.09

9.1

0.96

10.3

1.06

11.3

1.22

12.3

1.37

13.2

1.53

14.0

1.69

14.8

1.86

15.5

2.02

16.3

2.23

17.0

2.36

9.5

1.09

10.7

1.18

11.7

1.34

12.6

1.51

13.5

1.68

14.3

1.86

15.0

2.03

15.8

2.21

16.4

2.40

17.2

2.62

9.9

1.24

11.0

1.31

12.0

1.48

12.9

1.66

13.8

1.84

14.6

2.04

15.3

2.21

16.0

2.42

16.7

2.61

17.3

2.82

LEGEND


kW


NOTES:


2.













1900

1950

2000

2050

2100

2150

2200

2250

2300

2350

1500

1550

1600

1650

1700

1750

1800

1850


Airflow

(L/s)

50 100 150 200


250 300 350 400 450 500


9.0

0.58

10.2

0.73

11.3

0.88

12.1

1.00

13.2

1.21

14.2

1.24

15.1

1.28

16.0

1.44

16.5

1.68

17.3

1.80

9.2

0.62

10.4

0.79

11.5

0.94

12.3

1.06

13.2

1.24

14.3

1.29

15.1

1.41

16.0

1.59

16.6

1.81

17.3

1.93

9.4

0.67

10.6

0.84

11.7

1.01

12.5

1.14

13.3

1.28

14.4

1.38

15.2

1.54

16.1

1.73

16.6

1.94

17.4

2.06

9.7

0.73

10.8

0.89

11.9

1.08

12.7

1.21

13.5

1.35

14.5

1.48

15.3

1.67

16.1

1.86

16.7

2.02

17.4

2.15

9.9

0.79

11.0

0.96

12.1

1.14

12.9

1.29

13.6

1.44

14.6

1.64

15.4

1.82

16.2

1.94

16.8

2.13

17.5

2.29

10.1

0.94

11.2

1.11

12.2

1.26

13.0

1.42

13.9

1.56

14.7

1.75

15.5

1.94

16.2

2.12

16.9

2.29

17.4

2.44

10.4

1.01

11.4

1.17

12.4

1.33

13.3

1.51

14.0

1.64

14.8

1.81

15.6

2.02

16.3

2.21

17.0

2.40

17.6

2.56

10.6

1.07

11.6

1.22

12.5

1.40

13.5

1.59

14.2

1.72

15.0

1.89

15.7

2.10

16.5

2.32

17.2

2.51

17.8

2.68

10.8

1.13

11.8

1.29

12.7

1.46

13.7

1.68

14.4

1.81

15.1

1.98

15.8

2.19

16.6

2.40

17.3

2.60

18.0

2.80

11.1

1.21

12.0

1.35

12.9

1.55

13.8

1.76

14.5

1.91

15.3

2.07

16.0

2.27

16.7

2.51

17.4

2.71

18.1

2.92

11.3

1.29

12.1

1.43

13.1

1.63

14.0

1.84

14.7

2.01

15.4

2.17

16.2

2.36

16.8

2.60

17.5

2.82

18.2

3.04

11.6

1.36

12.3

1.51

13.2

1.71

14.1

1.92

14.9

2.12

15.6

2.28

16.3

2.47

17.0

2.70

17.6

2.93

18.3

3.15

11.9

1.45

12.5

1.58

13.4

1.81

14.3

2.00

15.1

2.23

15.8

2.39

16.5

2.58

17.1

2.80

17.8

3.04

18.4

3.29

12.0

1.54

12.7

1.67

13.6

1.89

14.5

2.09

15.3

2.34

15.9

2.51

16.6

2.69

17.3

2.90

17.9

3.16

18.6

3.41

12.4

1.64

12.9

1.76

13.8

1.99

14.6

2.19

15.5

2.45

16.1

2.64

16.8

2.82

17.4

3.02

18.1

3.28

18.7

3.55

12.6

1.75

13.1

1.85

14.0

2.08

14.8

2.30

15.6

2.56

16.3

2.77

16.9

2.94

17.6

3.14

18.2

3.40

18.8

3.67

12.9

1.85

13.3

1.95

14.2

2.19

15.0

2.42

15.8

2.65

16.5

2.91

17.1

3.08

17.7

3.29

18.4

3.51

19.0

3.80

13.2

1.95

13.5

2.06

14.4

2.29

15.2

2.54

16.0

2.77

16.7

3.04

17.3

3.23

17.9

3.44

18.5

3.65

19.1

3.92

LEGEND


kW


NOTES:


2.













25


FAN PERFORMANCE (ENGLISH) — VERTICAL DISCHARGE UNITS

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500

50TFF007 (5 TONS) — STANDARD MOTOR (BELT DRIVE)

Airflow

(Cfm)

External Static Pressure (in. wg)

0.1

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

731

772

814

852

894

936

978

1021

304

359

424

562

630

708

789

826

865

905

945

984

795 1024

891 1064

368

424

895

930

497

964

615

1002

692 1037

771 1072

488

990

562 1019

636 1050

739 1084

818

899

1119

1154

617 1074

691 1105

774 1134

859 1163

948

1047

1194

1226

764 1130

847 1174

875

985

1168

1213

921

1078

1250

1315

1059

1197

1345

1401

1216

1335

930

1208 1096 1265 1234 1348 1455 1421 1639

998

1235 1156 1303 1318 1371 1499 1433 1638

1089

1190

1266

1297

1250

1361

1330

1362

1413

1534

1396

1422

1604

1718

1460

1485

1796

1910

859 1108 998 1190 1156

1259 1310 1327 1473 1393 1656 1452 1840 1510 2041

956 1145 1097

1225 1275 1294 1439 1359 1604 1423 1779 1483 1980

1538 2171

1064 998 1104 1064 1183 1216

1260 1396 1330 1578 1392 1744 1454 1927

1515 2128 1569 2326

1107 1114 1145 1182

1222 1353 1296 1534 1365 1718 1426 1901 1485 2084

1544 2283 1601 2459

1150 1241 1186 1318

1262 1491 1331 1674 1400 1875 1461 2067

1518 2249 1575 2445 — —

LEGEND

Bhp —

Brake Horsepower

Watts —

Input Watts to Motor

NOTES:


2.


3. Factory-shipped drive range is 930 to 1205 rpm. Other rpms may require a field-supplied drive.


5. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See

Evaporator-Fan Motor Performance table on page 30 for additional information.

6. Use of a field-supplied motor may affect wire sizing. Contact your Carrier representative to verify.

7. To convert Watts to Bhp:

Bhp =

Watts x Motor Efficiency

746


Maximum Continuous Watts: 2120



50TFF008,009 (6.1 AND 6.9 TONS) — STANDARD MOTOR (BELT DRIVE)


Airflow

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

2700

2800

2900

3000

3100

3200

3300

3400

3500

1950

2000

2100

2200

2250

2300

2400

2500

2550

2600

466

473

488

503

511

518

534

549

557

565

429 564

448 571

486 585

524 585

539 592

562 599

607 613

653

627

684

633

708

639

567

623

590

571

637

641

684

653

731 689

755 694

803 705

894

923

981

745

750

761

1041

1079

1156

799

804

814

1250

1289

1368

861

864

871

1616

1638

1682

922

924

929

1902

1928

1980

759

790

853

2219

2246

2283

1004

1007

1013

2640

2652

2677

851 716 1039 772 1233 824 1447 878 1727

934 2032

916 2326 1019 2702

708

659

731

665

875 722 1072 778 1275 829 1491

884 1744 937 2058

947 2343 1022 2710

899 727 1097 783 1310 834 1526

885 1770 939 2084

979 2369 1025 2727

787

677 965 738 1165 794 1378 844 1604

892 1840 944 2119

987 2428 1039 2791

835 690 1031 750 1233 805 1456 855 1691

902 1927

949 2188 1002 2495 1041 2831

867 697 1064 756 1267 811 1499 861 1735

908 1980

953 2232 1003 2521 1045 2854

891 703 1097 761 1301 816 1543 866 1779

913 2023

957 2275 1004 2554 1050 2878

581

597

763

652 948 717 1173 773 1378 827 1621 878 1875 924 2128 967 2377 1010 2637 1056 2925

827

665 1014 713 1250 786 1473 839 1709

889 1971

935 2223 978 2479 1019 2735 1061 3002

613 891

679 1081 745 1335 799 1560 850 1805

900 2067

946 2335 989 2595 1030 2847 —

629 965 694 1156 759 1413 812 1665 862 1901 911 2171 957 2445 1000 2702 1040 2956 —

646 1039 709 1241 772 1508 825 1761 875 2015 923 2275 968 2554 1011 2832 — — —

662 1123 724 1335 785 1595 840 1866 887 2128 934 2386 980 2661 1022 2933 — — —

—

—

—

—

679 1207 740 1430 798 1691 854 1980 900 2240 946 2504 991 2775 —

696 1301 756 1534 811 1788 868 2093 914 2369 959 2629 1003 2886 —

712 1396 771 1639 824 1892 881 2206 928 2495 971 2759 1014 3009 —

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.





Evaporator-Fan Motor Performance table on page 30 for addition al information.



Bhp =


746





26

FAN PERFORMANCE (ENGLISH) — VERTICAL DISCHARGE UNITS (cont)

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

2500

2600

2700

2800

2900

3000

3100

3200

50TFF012 (8.3 TONS) — STANDARD MOTOR (BELT DRIVE)

Airflow

(Cfm)


0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0


471

483

495

508

521

532

544

557

369 552

404 562

449 573

485 583

530 594

630 605

677 616

716 628

494 617

530 627

575 638

620 648

665 659

763 670

803 680

859

690

611 679

656 685

710

694

755

704

719

740

773

754

818 757

881 765

881 765 944 811 1034 889 1321

946 1645

944 775 1025 825 1097

907 1429 959 1771

827 757 944 775 1007 793 1088 848 1240

929 1528 975 1878

881 759 1007 791 1070 808 1186 887 1357

954 1690 987 1959

809

714 944 766 1070 807 1150 823 1339

918 1519 963 1834 999 2040

891

725 1014 778 1148 825 1275 874 1422

926 1613 974 1920

1012 2134

940

735 1081 787 1216 835 1353 880 1491

933 1656 983 1963

1017 2177

998 746 1148 796 1284 844 1430 888 1569

934 1718 988 1980

1025 2230

570

583

596

609

763 639

818 651

907

700 1064 757 1216 805 1353 854 1508 897 1648

940 1853 989 2031

1032 2282

965

711 1123 767 1284 815 1430 863 1587

907 1744 947 1946 991 2099

1038 2318

867 663 1031

721 1190 777 1353 826 1517 871 1665

916 1831 956 2039

997 2195 1043 2380

924 674 1097

732 1267 787 1430 836 1595 880 1753

926 1927

966 2134 1004 2291 1045 2478

622 989 686 1165

744 1335 797 1508 847 1691 890 1849

934 2015

976 2238 1013 2397 1051 2569

635 1047

698 1241 755 1413 808 1595 857 1779

901 1945

943 2160 985 2344 1023 2514 1059 2688

649 1123

713 1318 767 1491 818 1683 867 1866

912 2050

952 2265 994 2451 1032 2633 1068 2819

662 1190

722 1396 778 1578 829 1779 878 1962 922 2203 962 2371 1003 2560 1042 2763 1078 2952

675 1267

734 1482 790 1674 839 1875 888 2058 933 2309 973 2496 1011 2679 1051 2895 1087 3097

689 1353

746 1569 801 1761 851 1971 898 2212 943 2424 983 2624 1021 2810 1060 3029 1090 3276

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





3900

4000

4100

4200

4300

4400

4500

4600

3100

3200

3300

3400

3500

3600

3700

3800

4700

4800

4900

5000

5100


Airflow

(Cfm)

0.2

0.4

0.6

0.8


1.0

1.2

1.4

1.6

1.8

2.0


570

584

598

612

623 636

676 649

728 662

781 675

799 693

842 705

886

748 1044 800 1202 850 1281

901 1360 950 1474 989 1597 1000 1755

948

759 1097 809 1281 858 1352

907 1457 960 1571 1001 1703 1006 1834

904

717 1027 769 1158 819 1342 867 1483

914 1536 963 1668 1010 1799 1018 1940

957

729 1115 780 1229 829 1414 876 1589

922 1606 968 1764 1018 1940 1022 2045

626

640

873 688 1018

741 1202 792 1299 840 1483 886 1676

930 1773 975 1826 1021 2062 1039 2203

913 702 1080

754 1290 803 1378 851 1553

896 1755 940 1913 983 1887 1026 2212 1051 2370

654 1065

714 1218 767 1373 815 1514 861 1666

906 1862 950 2027 991 2202 1030 2361 1064 2512

668 1129

727 1291 780 1456 827 1598 873 1751

916 1948 959 2123 1001 2299 1040 2476 1075 2638

683 1194

741 1365 793 1540 839 1691 884 1836

927 2035 969 2228 1010 2405 1049 2593 1085 2773

697 1267

754 1448 806 1624 851 1785

895 1931 938 2123 979 2334 1020 2521 1059 2710 1095 2901

711 1340 767 1531 819 1708 864 1879

907 2035 949 2219 989 2441 1029 2638 1068 2837 1105 3028

726 1423 780 1624 832 1802 877 1983

919 2149 960 2316 1000 2548 1039 2764 1077 2955 1114 3166

741 1506 794 1717 845 1897 889 2096

931 2263 971 2423 1011 2647 1049 2882 1087 3092 1124 3304

755 1598 808 1819 858 2000

902 2210 943 2387 983 2548 1022 2764 1059 3010 1097 3230

1133 3442

770 1700 821 1923 871 2114

915 2325 955 2512 995 2683 1033 2882 1070 3138

1107 3368 1143 3590

784 1794 835 2027 884 2219

928 2450 968 2638 1006 2828 1044 3010 1081 3258

1117 3516 1152 3748

799 1905 849 2140

897 2343 941 2566 981 2773 1018 2964 1056 3147

1092 3387 1127 3655 1162 3897

814 2009 863 2254

910 2468 954 2692 993 2919 1030 3111 1067 3304

1103 3525 1138 3804 1172 4055

829 2131 877 2378

923 2602 967 2828 1006 3065 1043 3267

1079 3470 1114 3674 1149 3934 1182 4223

843 2246

892 2503 937 2746 980 2964 1019 3221

1055 3424 1091 3637 1126 3822 1160 4083 1193 4382

858 2378

906 2629 950 2891 993 3111

1032 3388 1068 3590 1103 3804 1137 4009 1171 4242 1204 4531

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





27


FAN PERFORMANCE (ENGLISH) — HORIZONTAL DISCHRGE UNITS

50TFF007 (5 TONS) — STANDARD MOTOR (BELT DRIVE)

Airflow

(Cfm)

1500

1600

1700

1800

1900

2000

2100

2200

2300

2400

2500


0.1

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

656

691

727

765

258 722

304 753

350 785

487 821

802 539

840 600

878 669

916 739

854

888

923

958

304

350

405

532

585

646

716

795

840

867

895

923

953

984

1015

1046

424

470

939

965

543

608

1024

1050

672

737

1106

1127

829

884

1195

1207

995

1078

1269

1285

1179

1262

1347

1360

1354

1464

534

991 672 1076 811 1151 958

1222 1123 1301 1354 1370 1566

638

1019 843 1099 883 1178 1031

1249 1182 1316 1353 1382 1526

700 1046

771 1073

835

907

1126

1154

965

1047

1201

1226

1106

1190

1274

1297

1275

1361

1338

1363

1439

1534

1402

1424

1621

1718

843 1101 981 1182 1140

1252 1292 1320 1456 1388 1639 1448 1831

924 1129 1072

1209 1241 1280 1404 1345 1569 1410 1744 1473 1945

954 827 993

993 916 1029

883

973

1079

1112

1022

1123

1160

1190

1173

1275

1237

1264

1344

1447

1309

1336

1517

1639

1372

1400

1691

1823

1434

1459

1866

1997

1496

1519

2067

2188

1031 1022 1066 1081 1145 1241

1220 1396 1292 1569 1363 1770 1428 1962

1486 2145 1543 2335

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





50TFF008,009 (6.1 AND 6.9 TONS) — STANDARD MOTOR (BELT DRIVE)


Airflow

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0


1950

2000

2100

2200

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

429 410 424 538 600 659

671 843 736 1046 778 1252 800 1501 765 1735 736 1945 666 2060

435 421 429 553 605 683

675 867 739 1071 783 1282 808 1532 795 1770 759 1988 697 2123

447 443 439 584 615 731

683 916 746 1122 794 1343 825 1594 826 1840 805 2075 760 2250

459 465 549 615

625 779 691 965 753 1173 805 1404 842 1656 857 1910 851 2162 823 2377

465 473 554 630

630 803 695 989 757 1199 810 1439 850 1691 873 1945 863 2206 855 2445

471 487 559 646

635 827 699 1014 760 1224 816 1465 859 1718

888 1980

897 2249 887 2504

482 524 569 684

645 875 708 1064 768 1284 824 1526 872 1779

909 2050

931 2326 935 2595

494 554 581 723

654 924 717 1123 776 1344 832 1587

882 1849 925 2119

955 2394 972 2678

501 577 587 747

659 956 722 1156 780 1378 836 1621

887 1884

931 2162 964 2436 986 2718

507 592 592 771

663 981 727 1182 784 1404 839 1656

891 1919

936 2197 973 2479 999 2759

520 638 604 827

672 1031 737 1250 793 1473 846 1726

898 1997

946 2275 987 2554 1019 2839

533 684 615 875

683 1081 747 1327 802 1552 855 1805

906 2076

954 2352 997 2637 1034 2917

546 731

626 932 693 1140 756 1396 813 1630 863 1884 913 2154 961 2436 1006 2727 —

559 779

637 989 704 1207 765 1473 823 1718 872 1962 921 2240 969 2529 1014 2807 —

572 835

648 1056 715 1275 775 1543 832 1814

882 2058

930 2335 976 2620 1021 2902 —

585 883

660 1114 727 1353 785 1321 841 1901 892 2162 939 2428 984 2710 — — —

598 940

671 1182 739 1439 795 1691 851 1997 902 2266 948 2529 993 2799 —

610 998

682 1258 750 1526 806 1779 860 2084 912 2369 958 2637 1002 2902 —

623 1056 694 1335 761 1613 817 1866 870 2180 921 2479 968 2751 — — —

—

—

—

—

—

—

—

—

—

—

—

—

—

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





28

FAN PERFORMANCE (ENGLISH) — HORIZONTAL DISCHARGE UNITS (cont)

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

2500

2600

2700

2800

2900

3000

3100

3200


Airflow

(Cfm)


0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0


437

448

460

471

483

484

495

505

333 517

369 526

404 534

449 544

440 590

476 597

512 605

557 613

494 553 593 620

562 560 677 631

607 570 723 638

646 579 763 646

566 653

602 660

638 668

683 675

692

712

746

717

791

723

361

730

755 770

836 778

827 805 881 811

881 815 926 822

944 830 998 883 1240

989 843 1079 898 1357

908 779 944 825 980 835 1052 855 1186

910 1474

971 783 1052 830 1070 843 1150 868 1303

924 1546

728 682

810

690

881

738 1034 789 1150 840 1159 860 1195 880 1429

942 1681

940 747 1081 800 1233 850 1353 879 1233

925 1604 964 1761

851

699 998 755 1140 805 1284 857 1447 896 1473

935 1709 975 1811

899

708 1047 761 1199 812 1344 862 1517

908 1639 944 1836 984 1903

516

527

537

548

692 589 810 655 956

717 1106 767 1250 819 1413 867 1578

915 1753 952 1920 993 2014

739 599 859 664 1006

724 1165 775 1318 827 1482 873 1639

920 1831 963 2005 1001 2091

795 609 907 672 1064

731 1216 784 1387 833 1552 880 1718

926 1901

970 2134 1007 2221

851 619 956 680 1114

738 1275 794 1456 840 1621 888 1805

931 1971

976 2230 1017 2362

560

571

916 629 1014 688 1173

747 1344 802 1534 847 1700 895 1884

938 2108

981 2309 1024 2496

981 639 1072

698 1241 756 1422 810 1604 856 1788

901 1971

945 2203 986 2389 1029 2605

582 1047 649 1140

708 1310 764 1499 816 1674 865 1875

908 2050

953 2300 993 2478 1034 2707

593 1123 659 1207

717 1387 773 1578 823 1753 875 1962 915 2186 960 2389 1000 2587 1039 2800

605 1207 670 1284

727 1465 781 1648 832 1840 883 2050 924 2291 966 2487 1008 2698 1046 2904

616 1292 680 1361

737 1543 789 1726 841 1927 889 2177 934 2389 972 2587 1015 2819 1053 3029

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





3900

4000

4100

4200

4300

4400

4500

4600

3100

3200

3300

3400

3500

3600

3700

3800

4700

4800

4900

5000

5100


Airflow

(Cfm)


0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0


529

541

553

566

535 605

579 615

693 669

746 680

834

719 948 775 1158 815 1308 880 1352

911 1606 940 1685 971 1826

886

729 1009 791 1211 827 1369 889 1448

920 1676 951 1747 985 1922

632 626 790 692 948

740 1071 792 1237 832 1413

895 1571 929 1755 965 1843 999 2027

685 636 843 702 1018

751 1141 798 1290 845 1510

903 1668 940 1826 980 1940 1010 2133

579

593

737 647 904

713 1080 763 1220 807 1352 856 1589

911 1747 952 1887 989 2054 1021 2229

790 659 957

722 1141 775 1290 817 1431 867 1624

920 1799 965 2010 1000 2150 1035 2308

607 947 670 1113

732 1267 782 1423 833 1565 879 1751

927 1940 973 2123 1013 2290 1046 2432

621 1010 681 1170

742 1332 795 1506 842 1641 889 1819

934 2018 980 2210 1022 2396 1058 2557

636 1073 693 1226

751 1398 808 1590 851 1725

898 1897 942 2105 987 2307 1030 2503 1068 2683

650 1137 705 1291

761 1464 819 1674 861 1811

908 1974 950 2193 994 2405 1037 2602 1077 2801

665 1210

717 1357 772 1548 830 1759 871 1905

917 2070 960 2272 1001 2503 1045 2710 1085 2919

680 1283

728 1431 783 1632 839 1836 883 2009

925 9175 969 2370 1009 2602 1051 2828 1092 3037

696 1365

739 1506 794 1717 848 1914

896 2123 935 2281 979 2468 1018 2701 1058 2937 1100 3157

711 1456 750 1582 805 1811 857 2000

908 2237 945 2387 988 2575 1028 2801 1066 3047 1106 3285

727 1540 762 1666 817 1897 867 2096

919 2343 955 2512 996 2692 1037 2901 1074 3166

1113 3414

742 1641 774 1759 828 1992 877 2193

929 2450 967 2638 1005 2819 1046 3019 1084 3276

1121 3544

758 1742 786 1854 840 2088 888 2307

938 2557 980 2773 1015 2946 1056 3147

1093 3396 1129 3674

773 1845 799 1948 852 2193

899 2423 947 2656 992 9910 1025 3083 1064 3285

1103 3516 1137 3795

789 1958 812 2053 863 2290

910 2548 957 2773 1003 3047 1036 3230

1073 3433 1112 3655 1147 3925

805 2070 826 2166 875 2405

921 2665 966 2891 1014 3184

1049 3396 1083 3590 1121 3804 1157 4055

821 2202 840 2290 887 2521

932 2792 976 3019

1024 3322 1061 3553 1093 3748 1129 3962 1166 4204

LEGEND

Bhp —

Brake Horsepower

Watts —


NOTES:


2.








Bhp =


746





29


UNIT

50TFF

UNIT RATED

VOLTAGE

007

008

009

012

014

400

400

400

400

400

LEGEND

Bhp


BkW

— kW x Motor Efficiency

EVAPORATOR-FAN MOTOR PERFORMANCE

MAXIMUM

ACCEPTABLE

CONTINUOUS

BkW*

1.79

1.79

1.79

1.79

2.76

MAXIMUM

ACCEPTABLE

CONTINUOUS

BHP*

2.40

2.40

2.40

2.40

3.70

MAXIMUM

ACCEPTABLE

OPERATING

WATTS

2,120

2,120

2,120

2,120

3,313

MAXIMUM

AMP DRAW

3.0

3.0

3.0

3.0

5.5

*Extensive motor and electrical testing on these units ensures that the full range of the motors can be utilized with confidence. Using your fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

UNIT 50TFF

007

008,009

012

014

*Approximate fan r/s shown.

0

20.08

14.67

15.00

14.83

1

/

2

19.67

14.25

14.58

14.58

FAN R/s AT MOTOR PULLEY SETTINGS* (SI)

1

19.17

13.83

14.25

14.25

1

1

/

2

18.75

13.33

13.92

13.72

MOTOR PULLEY TURNS OPEN

2 2

1

/

2

3

18.25

17.83

17.33

12.92

13.58

13.67

12.50

13.25

13.33

12.08

12.92

13.08

3

1

/

2

16.92

11.67

12.58

12.75

4

16.42

11.25

12.25

12.50

4

1

/

2

16.00

10.83

11.92

12.17

5

15.50

10.33

11.50

11.83

UNIT

50TFF

007

008,009

012

014

0

1205

880

900

890

*Approximate fan rpm shown.

FAN RPM AT MOTOR PULLEY SETTINGS* (ENGLISH)

1

/

2

1180

855

875

875

1

1150

830

855

855

1

1

/

2

1125

800

835

835

MOTOR PULLEY TURNS OPEN

2 2

1

/

2

3

1095

775

1070

750

1040

725

815

820

795

800

775

785

3

1

/

2

1015

700

755

765

4

985

675

735

750

4

1

/

2

960

650

715

730

5

930

620

690

710

30


BAROMETRIC RELIEF DAMPER CHARACTERISTICS — 50TFF007


BAROMETRIC RELIEF DAMPER CHARACTERISTICS — 50TFF008-014

31


ECONOMI$ER POWER EXHAUST PERFORMANCE

(50TFF007)

2500

2000

1500

1000

500

0

2 FANS

OPERATING

1 FAN

OPERATING

0 0.1

0.2

0.3

0.4

0.5

STATIC PRESSURE (in. wg)

ECONOMI$ER POWER EXHAUST PERFORMANCE

(50TFF008-014)

5000

4000

3000

2000

1000

0

2 FANS

OPERATING

1 FAN

OPERATING

0 0.1

0.2

0.3

0.4

0.5


50

ECONOMI$ER OUTDOOR-AIR LEAKAGE

40

30

20

10

0

0

SIZE 007

SIZES 008-014

0.25

0.5

0.75


1

0.25

ECONOMI$ER BAROMETRIC FLOW

0.20

0.15

0.10

0.05

0.00

0

SIZE 007

SIZES 008-014

500 1000

FLOW (CFM)

1500 2000

ECONOMI$ER RETURN-AIR PRESSURE DROP

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0.00

1200

SIZE 007

SIZES 008-014

2000

2800

FLOW (CFM)

3600 4400

32

COMPONENT

1 Heater Module

2 Heater Modules


EconoMi$er

ACCESSORY/FIOP STATIC PRESSURE DROP (Pa) — 50TFF007

L/s

700

20

41

12

32

800

22

42

12

40

900

25

42

12

50

1000

27

43

12

63

1100

30

44

12

77

1200

32

45

12

—

COMPONENT

1 Heater Module



EconoMi$er

ACCESSORY/FIOP STATIC PRESSURE DROP (Pa) — 50TFF008-014

L/s

800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

1

5

2

7

4

9

6

10

8

12

10

15

12

17

14

20

16

22

18

25

19

27

21

29

23

32

25

34

27

37

29

39

31

40

2

—

3

—

4

—

5

—

6

—

7

—

8

31

9

35

10

41

11

50

12

59

13

67

14

75

15

84

16

90

17

97

18

105

COMPONENT

1 Heater Module



EconoMi$er

ACCESSORY/FIOP STATIC PRESSURE DROP (in. wg) — 50TFF007

1500

0.09

0.16

0.05

0.13

1600

0.09

0.16

0.05

0.15

1800

0.10

0.17

0.05

0.19

Cfm

2000

0.11

0.17

0.05

0.24

2200

0.11

0.17

0.05

0.29

2400

0.12

0.18

0.05

0.35

2500

0.13

0.18

0.05

—

COMPONENT

1 Heater Module



EconoMi$er

ACCESSORY/FIOP STATIC PRESSURE DROP (in. wg) — 50TFF008-014

1900

0.01

0.02

0.02

—

2200

0.02

0.03

0.02

—

2500

0.03

0.05

0.02

—

3000

0.05

0.07

0.03

0.125

Cfm

3500

0.07

0.09

0.04

0.18

4000

0.08

0.12

0.05

0.27

4500

0.10

0.14

0.06

0.34

5000

0.12

0.16

0.07

0.40

UNIT

50TFF

007

008

009

012,

014

ELECTRIC HEATING CAPACITIES — 50TFF007-014

UNIT ELECTRICAL

CHARACTERISTICS

400-3-50

400-3-50

400-3-50

400-3-50

ACCESSORY kW

4.2

8.0

9.7

16.0*

17.7*

9.7

11.5

19.3

22.9

29.0*

9.7

11.5

19.3

22.9

29.0*

9.7†

11.5**

19.3

22.9

29.0

34.7*

*Two heater packages are required to provide kW indicated.

†Available on 012 size units only.

**Available on 014 size units only.

NOTE: The kW ratings shown above are at 400 v.

PART NO.

50DJ90–

0921

0941

0951

0941

0941, 0951

1681

1631

1641

1651

1681, 1641

1681

1631

1641

1651

1681, 1641

1681

1631

1641

1651

1681, 1641

1631, 1651

5500

0.14

0.19

0.08

—

33

Electrical data

50TFF007-014

UNIT

50TFF

007

008

009

012

014

NOMINAL

VOLTAGE

(50 Hz)

400

(3 phase)

400

(3 phase)

400

(3 phase)

400

(3 phase)

400

(3 phase)

VOLTAGE

RANGE

Min Max

360

360

360

360

360

440

440

440

440

440

COMPR

(ea)

RLA LRA

9.9

8.9

8.3

8.9

10.4

72.0

42.0

69.0

64.0

73.0

OFM

(ea)

FLA

0.6

0.6

0.6

0.6

0.6

LEGEND

FLA

— Full Load Amps

HACR — Heating, Air Conditioning and Refrigeration

IFM

— Indoor (Evaporator) Fan Motor

LRA

— Locked Rotor Amps

MCA

— Minimum Circuit Amps

MOCP — Maximum Overcurrent Protection

NEC

— National Electrical Code (U.S.A.)

OFM

— Outdoor (Condenser) Fan Motor

RLA

— Rated Load Amps

*Heater capacity (kW) is based on heater voltage of 400 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.

†Heaters are field installed only.

**Fuse or HACR circuit breaker.

††Fusing in single point box provides the required branch circuit protection.

NOTES:

1. In compliance with NEC requirements (U.S.A. Standard) for multimotor and combination load equipment (refer to NEC Articles 430 and

440), the overcurrent protective device for the unit shall be fuse or

HACR breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

Use the following formula to determine the percent of voltage imbalance.

% Voltage imbalance

IFM

FLA

2.6

2.6

2.6

2.6

4.8

ELECTRIC HEAT*

Nominal kW†

—

4.2

8.0

9.7

16.0

17.7

—

9.7

11.5

19.3

22.9

29.0

—

9.7

11.5

19.3

22.9

29.0

—

9.7

19.3

22.9

29.0

34.7

—

11.5

19.3

22.9

29.0

34.7

FLA

—

7.2

13.8

16.8

27.8

30.7

—

13.9

16.5

27.8

33.1

41.8

—

13.9

16.5

27.8

33.1

41.8

—

16.5

27.8

33.1

41.8

50.1

—

16.5

27.8

33.1

41.8

50.1

POWER SUPPLY

MCA

18.4

18.4

18.4

20.8

32.1

34.6

23.8

23.8

23.9

38.1

44.6

55.5

22.5

22.5

23.9

38.1

44.6

55.5

23.8

23.9

38.1

44.6

55.5

65.9

29.4

29.4

40.8

47.3

58.2

68.6

EXAMPLE: Supply voltage is 400-3-50.

AB = 393 v

BC = 403 v

AC = 396 v

MOCP**

25

25

25

40

45

60

30

30

25

40

45

60

25

25

25

25

35

35

30

30

40

45

60

70††

35

35

45

50

60

70††

=

1192

3

= 397

Determine maximum deviation from average voltage:

(AB) 397 – 393 = 4 v

(BC) 403 – 397 = 6 v

(AC) 397 – 396 = 1 v

Maximum deviation is 6 v.

Determine percent voltage imbalance.

MINIMUM UNIT

DISCONNECT

LRA FLA

23

23

23

35

41

51

25

25

25

35

41

51

18

18

18

19

30

32

31

31

38

44

54

63

25

25

35

41

51

61

109

103

162

152

192

Average Voltage =

393 + 403 + 396

3

Average Voltage =

393 + 403 + 396

3

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than

2%, contact your local electric utility company immediately.

= 100 x max voltage deviation from average voltage average voltage

34

Typical piping and wiring — 50TFF007-014

(sizes 008-014 shown)

VERTICAL DISCHARGE DUCTING

TOOL-LESS FILTER

ACCESS DOOR

CONDENSER-FAN

DISCHARGE AIR

HORIZONTAL DISCHARGE DUCTING

LEGEND

NEC — National Electrical Code (U.S.A. Standard)

35

Typical wiring schematic (50TFF008-014 shown)

36

AHA

— Adjustable Heat Anticipator

AWG

— American Wire Gage

C

CAP

— Contactor, Compressor

— Capacitor

CB

CC

— Circuit Breaker

— Cooling Compensator

COMP — Compressor Motor

D

— Diode

EC

— Enthalpy Control

ECON

— Economizer

EPS

— Emergency Power Supply

EQUIP — Equipment

ER

FPT

— Economizer Relay

— Freeze-Up Protection Thermostat

FU

— Fuse

GND

— Ground

HC

HPS

IFC

IFM

— Heater Contactor (Strip Heat)

— High-Pressure Switch

— Indoor-Fan Contactor

— Indoor-Fan Motor

IFMOVL — Indoor-Fan Motor Overload

IFR

— Indoor-Fan Relay

LPS

LSM

— Low-Pressure Switch

— Limit Switch (Manual Reset)

MTR

OAT

— Motor

— Outdoor-Air Thermostat

OFC

— Outdoor-Fan Contactor

OFM

— Outdoor-Fan Motor

P

PL

QT

R

SAT

— Plug

— Plug Assembly

— Quadruple Terminal

— Relay

— Supply-Air Thermostat

LEGEND

SEN

— Sensor

SW1

— Switch Fully Open

SW2

— Switch Fully Closed

SW3

— Switch Min Vent Position

SW4

— Switch Max Vent Position

TB

— Terminal Block

TC

TH

— Thermostat-Cooling

— Thermostat-Heating

TRAN — Transformer

Field Splice

Marked Wire

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

Splice

Splice (Marked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

To indicate common potential only.

Not to represent wiring.

NOTES

1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.

2. Three-phase motors are protected under primary single-phasing conditions.

3. Thermostat:

HH07AT170, 172, 174 and P272-2783

Subbase:

HH93AZ176, 178 and P272-1882, 1883

4. Set heat anticipator at 1 amp.

5. Use copper conductors only.

6. Use copper, copper-clad aluminum or aluminum conductors.

37

Controls

Operating sequence

Cooling, units without economizer — When thermostat calls for cooling, terminals G and Y1 are energized.

The indoor (evaporator) fan contactor (IFC), and compressor contactor no. 1 (C1) are energized and evaporator-fan motor, compressor no. 1 and condenser fans start. The liquid line solenoid valve for compressor no. 1 is deenergized to open. The condenser-fan motor runs continuously while unit is cooling. On 50TFF008-014 units, if the thermostat calls for a second stage of cooling by energizing Y2, compressor contactor no. 2 (C2) is energized and compressor no. 2 starts.

Heating, units without economizer (If Accessory

Heater is Installed) — Upon a call for heating through terminal W1, IFC and heater contactor no. 1 (HC1) are energized. On units equipped for 2 stages of heat, when additional heat is needed, HC2 is energized through W2.

Cooling, units with Durablade economizer — When the outdoor-air temperature is above the outdoor-air thermostat (OAT) setting and the room thermostat calls for cooling, compressor contactor no. 1 is energized to start compressor no. 1 and the condenser-fan motor. The evaporator-fan motor is energized and the economizer damper moves to the minimum position. Upon a further call for cooling, compressor contactor no. 2 will be energized (50TFF008-014), starting compressor no. 2. After the thermostat is satisfied, the damper moves to the fully closed position.

When the outdoor-air temperature is below the OAT setting and the thermostat calls for cooling, the economizer dampers move to the minimum position. If the supply-air temperature is above 13.9 C (57 F), the damper continues to open until it reaches the fully open position or until the supply-air temperature drops below 13.9 C (57 F).

When the supply-air temperature falls to between

13.9 C (57 F) and 11.1 C (52 F), the damper will remain at an intermediate open position. If the supply-air temperature falls below 11.1 C (52 F), the damper will modulate closed until it reaches the minimum position or until the supply-air temperature is above 11.1 C (52 F). When the thermostat is satisfied, the damper will move to the fully closed position.

If the outdoor air alone cannot satisfy the cooling requirements of the conditioned space, economizer cooling is integrated with mechanical cooling, providing second-stage cooling. Compressor no. 1 and the condenser fan will be energized and the position of the economizer damper will be determined by the supply-air temperature. Compressor no. 2 (50TFF008-014) is locked out.

When the second stage of cooling is satisfied, the compressor and condenser-fan motor will be deenergized.

The damper position will be determined by the supply-air temperature.

When the first stage of cooling is satisfied, the damper will move to fully closed position.

Cooling, units with EconoMi$er (50TFF007) —

When the outdoor-air temperature (OAT) is above the

ECON SP set point and the room thermostat calls for

Stage 1 cooling (R to G + Y1), the indoor (evaporator) fan motor (IFM) is energized and the EconoMi$er damper modulates to minimum position. The compressor contactor is energized to start the compressor and outdoor (condenser) fan motor (OFM). After the thermostat is satisfied, the damper modulates to the fully closed position when the

IFM is deenergized.

When the OAT is below the ECON SP setting and the room thermostat calls for Stage 1 cooling (R to G + Y1), the EconoMi$er modulates to the minimum position when the IFM is energized. The EconoMi$er provides Stage 1 of cooling by modulating the return and outdoor-air dampers to maintain a 12.8 C (55 F) supply air set point. If the supply-air temperature (SAT) is greater than 13.9 C (57 F), the EconoMi$er modulates open, allowing a greater amount of outdoor air to enter the unit. If the SAT drops below 11.7 C (53 F), the outdoor air damper modulates closed to reduce the amount of outdoor air. When the SAT is between 11.1 and 13.9 C (53 and 57 F), the

EconoMi$er maintains its position.

If outdoor-air alone cannot satisfy the cooling requirements of the conditioned space, and the OAT is above the

MECH CLG LOCKOUT set point, the EconoMi$er integrates free cooling with mechanical cooling. This is accomplished by the strategies below.

NOTE: Compressor has a 2-minute Minimum On, Minimum Off, and Interstage delay timer.

1. If Y1 is energized, and the room thermostat calls for

Y2 (2-stage thermostat), the compressor and OFM are energized. The EconoMi$er damper is maintained at its current position.

2. If Y1 is energized for more than 20 minutes, and Y2 is not energized (whether or not a 2-stage thermostat is used), the compressor and OFM are energized.

The EconoMi$er damper is maintained at its current position.

3. If Y1 is energized, and the compressor is already energized (see Step 2) and the room thermostat calls for Y2, the compressor continues to operate.

4. If compressor is energized and the thermostat is satisfied, the compressor, the OFM, and IFM are deenergized and the EconoMi$er modulates closed.

When the OAT is below the MECH CLG LOCKOUT set point, the compressors remain off.

Cooling, units with EconoMi$er (50TFF008-014)

— When the outdoor-air temperature (OAT) is above the

ECON SP set point and the room thermostat calls for

Stage 1 cooling (R to G + Y1), the indoor (evaporator) fan motor (IFM) is energized and the EconoMi$er damper modulates to minimum position. The compressor contactor is energized to start the compressor and outdoor (condenser) fan motor (OFM). After the thermostat is satisfied, the damper modulates to the fully closed position when the

IFM is deenergized.

When the OAT is below the ECON SP setting and the room thermostat calls for Stage 1 cooling (R to G + Y1), the EconoMi$er modulates to the minimum position when the IFM is energized. The EconoMi$er provides Stage 1 of cooling by modulating the return and outdoor-air dampers to maintain a (12.8 C) 55 F supply air set point. If the supply-air temperature (SAT) is greater than 13.9 C (57 F), the

EconoMi$er modulates open, allowing a greater amount of outdoor air to enter the unit. If the SAT drops below

11.7 C (53 F), the outdoor air damper modulates closed to reduce the amount of outdoor air. When the SAT is between 11.7 and 13.9 C (53 and 57 F), the EconoMi$er maintains its position.

38

If outdoor-air alone cannot satisfy the cooling requirements of the conditioned space, and the OAT is above the

MECH CLG LOCKOUT set point, the EconoMi$er integrates free cooling with mechanical cooling. This is accomplished by the strategies below.

NOTE: Compressors have a 2-minute Minimum On, Minimum Off, and Interstage delay timer.

1. If Y1 is energized, and the room thermostat calls for

Y2 (2-stage thermostat), compressor no. 1 and OFM are energized. The EconoMi$er damper is maintained at its current position.

2. If Y1 is energized for more than 20 minutes, and Y2 is not energized (whether or not a 2-stage thermostat is used), compressor no. 1 and OFM are energized.

The EconoMi$er damper is maintained at its current position.

3. If Y1 is energized, and compressor no. 1 is already energized (see Step 2) and the room thermostat calls for Y2, compressor no. 1 continues to operate. If Y2 remains energized for more than 20 minutes, compressor no. 2 is energized.

NOTE: Compressor no. 2 cannot be energized unless there is a signal for Y2 from the space thermostat.

4. If compressor no. 2 is energized, and the Y2 signal from the thermostat is satisfied, compressor no. 1 and 2 are deenergized. Reasserting Y2 will start compressor no. 1 and (after a 20-minute interstage delay) compressor 2.

5. If compressor no. 1 is energized and the thermostat is satisfied, compressor no. 1, the OFM, and IFM are deenergized and the EconoMi$er modulates closed.

When the OAT is below the MECH CLG LOCKOUT set point, the compressors remain off.

Heating, units with economizer (If Accessory

Heater is Installed) — When the room thermostat calls for heat through terminal W1, the evaporator-fan contactor and heater contactor no. 1 are energized. On units equipped for 2 stages of heat, when additional heat is needed, heater contactor no. 2 is energized through W2.

The economizer damper moves to the minimum position during heating. When the thermostat is satisfied, the damper moves to the fully closed position.

TEMP systems

A TEMP System is a network of communicating Carrier

TEMP System Thermostats and rooftop, factory-mounted

Apollo direct digital controls, each serving its own zone and heating/cooling unit. Networking allows your building manager to easily access each of your systems from a single location...whether they are in the same building or located throughout town.

The TEMP System’s inherently flexible, modular base design supports the exact number of independent, single zone systems you require...no more, no less, no compromises.

Ideal for department stores, small office buildings, fast food chains, schools and hotels, a TEMP System is a cost-effective way to maintain comfortable building environments.

TEMP SYSTEM THERMOSTAT (WITH TIMECLOCK) TEMP SYSTEM THERMOSTAT (WITHOUT TIMECLOCK)

39

Controls (cont)

Variable Volume/Variable Temperature

(VVT®) Systems

VVT Systems are dedicated to total building comfort. Carrier thermostats, zone dampers, and HVAC equipment with factory-mounted direct digital controls continually monitor and adjust their operation to ensure uninterrupted and personalized comfort for all occupants.

Through the use of communicating electronic controls,

VVT Systems are able to provide the comfort of a multiple zone system while using the installation, operating and maintenance economics of single zone equipment...virtually putting an end to the cost vs comfort compromise.

40

Application data

Outdoor installation — Units approved for outdoor installation only.

Ductwork — Secure vertical discharge ductwork to roof curb. For horizontal discharge applications, either attach ductwork to unit, or use field-supplied flanges attached to the horizontal discharge openings and attach all ductwork to flanges.

Horizontal discharge — To convert from vertical discharge to horizontal discharge:

1. Remove economizer or two-position damper to gain access to return duct opening.

2. Move the horizontal-discharge duct opening covers to the vertical discharge openings.

3. Rotate economizer or two-position damper

90 degrees.

4. Rotate the barometric relief damper 90 degrees.

5. Install block-off plate over the opening on the access panel.

Thru-the-curb service connections — Roof curb connections allow field power wires and control wires to enter through the roof curb opening.

Thru-the-bottom service connections — Power connections made through the bottom of the unit must utilize an accessory Carrier roof curb and accessory thru-the-bottom power connection accessory kit.

Thermostat — Use of 2-stage heating and cooling thermostat is recommended for all units. A 2-stage cooling thermostat is required on units with accessory economizer to provide integrated cooling.

Heating-to-cooling changeover — All units are automatic changeover from heating to cooling when automatic changeover thermostat and subbase are used.

Airflow — Units are draw-thru on cooling and blow-thru on heating.

Maximum airflow — To minimize the possibility of condensate blow-off from evaporator, airflow through units should not exceed 67 L/s per kW (500 cfm/ton).

Minimum airflow — For cooling minimum airflow is

40 L/s per kW (300 cfm/ton). For 50TFF007-014 units with electric heating, required minimum L/s (cfm) is 849

(1800) for 50TFF007; 1062 (2250) for 50TFF008; 1203

(2550) for 50TFF009; and 1416 (3000) for 50TFF012 and 014.

Minimum ambient cooling operating temperature

— The minimum temperature for standard units is –4 C

(25 F). With accessory Motormaster® II control, units can operate at outdoor temperatures down to –17.8 C (0° F).

Internal unit design — Due to Carrier’s internal unit design (draw-thru over the motor), air path, and specially designed motors, the full kW horsepower (maximum continuous bkW and bhp) listed in the Physical Data tables and the notes following each Fan Performance table can be utilized with confidence.

Using Carrier motors with the values listed in the Physical and Fan Performance Data tables will not result in nuisance tripping or premature motor failure. The unit warranty will not be affected.

Apollo direct digital controls — The Apollo direct digital controls must be used with either a Carrier master or monitor thermostat.

41

Guide specifications

Packaged Rooftop Cooling Unit with

Electric Heat Option — Constant Volume

Application

HVAC Guide Specifications

Size Range: 17.6 to 35.9 kW (5.0 to 10.2 Tons)

Nominal Cooling

Carrier Model Number: 50TFF

Part 1 — General

1.01 SYSTEM DESCRIPTION

Outdoor rooftop- or slab-mounted, electrically controlled cooling unit with optional heat utilizing a hermetic compressor for cooling duty and electric resistance coils for heating duty. Unit shall discharge supply air vertically or horizontally as shown on contract drawings.

1.02 QUALITY ASSURANCE

A. Unit shall be rated in accordance with ARI Standards

210/240 or 360 and 270 (U.S.A.).

B. Unit shall be designed to conform to ASHRAE 15, latest revision, and in accordance with UL 1995.

(U.S.A. Standards).

C. Roof curb shall be designed to conform to NRCA

Standards (U.S.A.).

D. Insulation and adhesive shall meet NFPA 90A requirements (U.S.A. Standard) for flame spread and smoke generation.

E. Unit casing shall be capable of withstanding Federal test method (U.S.A. Standard) Standard ASTM B117

500-hour salt spray test.

F. Units shall be designed in accordance with

ISO 9001:2000, and shall be manufactured in a facility registered to ISO 9001:2000.

1.03 DELIVERY, STORAGE, AND HANDLING

Unit(s) shall be stored and handled per manufacturer’s recommendations.

Part 2 — Products

2.01 EQUIPMENT (STANDARD)

A. General:

Factory-assembled, single-piece cooling unit with optional heat. Contained within the unit enclosure shall be all factory wiring, piping, controls, refrigerant charge (R-22), and special features required prior to field start-up.

B. Unit Cabinet:

1. Unit cabinet shall be constructed of galvanized steel, bonderized and coated with a baked enamel finish on all externally exposed surfaces.

2. Evaporator fan cabinet interior shall be insulated with a minimum 13 mm (

1

/

2

-in.) thick 1 lb density neoprene coated, flexible fiberglass insulation coated on the air side.

3. Cabinet panels shall be easily removable for servicing.

4. Holes shall be provided in the base rails for rigging shackles to facilitate overhead rigging, and forklift slots shall be provided to facilitate maneuvering.

5. Unit shall have a factory-installed, sloped condensate drain pan made of a non-corrosive

42 material, providing a minimum 19 mm (

3

/

4

-in.) connection with both vertical and horizontal drains and shall comply with ASHRAE 62.

6. Unit shall have factory-installed filter access panel to provide filter access with tool-less removal.

7. Unit shall have standard thru-the-bottom power connection capability.

C. Fans:

1. Indoor blower (evaporator fan) shall be beltdriven, double inlet, forward-curved centrifugal type. Belt drive shall include an adjustable-pitch motor pulley.

2. Indoor blower (evaporator-fan) shall be made from steel with a corrosion-resistant finish and shall be dynamically balanced.

3. Bearings shall be of the sealed, permanently lubricated, ball-bearing type for longer life and lower maintenance.

4. Condenser fan shall be of the direct-driven propeller type and shall discharge air vertically.

5. Condenser fan shall have aluminum blades riveted to corrosion-resistant steel spiders and shall be dynamically balanced.

D. Compressor(s):

1. Reciprocating or scroll type fully hermetic type, internally protected.

2. Factory rubber-mounted and internally spring mounted for vibration isolation.

3. On independent mounting circuits (008-014).

E. Coils:

1. Condenser coils shall have aluminum plate fins mechanically bonded to enhanced copper tubes with all joints brazed.

2. Tube sheet openings shall be belled to prevent tube wear.

3. Evaporator coil shall be of the full face active design.

F. Refrigerant Components:

Refrigerant circuit components shall include:

1. Refrigerant feed system.

2. Refrigerant filter drier.

3. Service gage connections on suction, discharge, and liquid line.

G. Filter Section:

1. Standard filter section shall consist of factoryinstalled low-velocity, throwaway 51 mm (2-in.) thick fiberglass filters of commercially available sizes.

2. Filter face velocity shall not exceed 1.64 m/s

(320 fpm) at nominal airflows.

3. Filter section shall use only one size filter.

4. Filters shall be accessible through an access panel with ‘‘no-tool’’ removal.

H. Controls and Safeties:

1. Unit Controls:

Unit shall be complete with self-contained lowvoltage control circuit.

2. Standard Safeties: a. Unit shall incorporate compressor overtemperature and overcurrent safety devices to shut off compressor.

b. Heating section shall be provided with the following minimum protections:

1) High-temperature limit switches.

2) Overcurrent protection.

3. Refrigerant Controls:

Shall contain high-pressure, loss-of-charge/ low-pressure, and freeze protection switches.

I. Operating Characteristics:

1. Unit shall be capable of starting and running at

46.1 C (115 F) ambient outdoor temperature, meeting maximum load criteria of ARI Standard

210/240 or 360 (U.S.A. Standard) at ± 10% voltage.

2. Compressor with standard controls shall be capable of operation down to –4 C (25 F) ambient outdoor temperature.

J. Electrical Requirements:

All unit power wiring shall enter unit cabinet at a single factory-predrilled location.

K. Motors:

1. Compressor motors shall be cooled by refrigerant passing through motor windings and shall have line break thermal and current overload protection.

2. Indoor blower (evaporator-fan) motor shall have permanently lubricated bearings and inherent automatic-reset thermal overload protection.

3. Totally enclosed condenser-fan motor shall have permanently lubricated bearings, and inherent automatic-reset thermal overload protection.

L. Special Features:

Certain features are not applicable when the features designated by * are specified. For assistance in amending the specifications, your local Carrier Sales

Office should be contacted.

* 1. Direct Digital Controls: a. Shall be available as a factory-installed option.

b. Shall actively monitor all modes of operation, as well as evaporator-fan status, filter status, indoor-air quality, supply-air temperature, and outdoor-air temperature.

c. Shall work with Carrier TEMP and VVT® systems.

d. Shall have built-in diagnostics for thermostat commands for both staged heating and cooling, evaporator-fan operation, and economizer operation.

e. Shall be equipped with a 5-minute time delay between modes of operation.

2. Roof Curbs: (Horizontal and Vertical) a. Formed galvanized steel with wood nailer strip and capable of supporting entire unit weight.

b. Allows for installing and securing ductwork to curb prior to mounting unit on the curb.

* 3. Integrated Economizer: a. Integrated integral-modulating type capable of simultaneous economizer and compressor operation.

b. Includes all hardware and controls to provide cooling with outdoor air.

c. Equipped with low-leakage dampers not to exceed 3% leakage, at 249 Pa (1 in. wg) pressure differential (Durablade economizer).

d. Capable of introducing up to 100% outdoor air in both minimum and fully open positions.

e. Equipped with a gravity relief sliding plate damper (Durablade economizer). Damper shall close upon unit shutoff.

f. EconoMi$er shall be equipped with a barometric relief damper with up to 100% of return air (007) or 90% of return air (008-

014) relief. Durablade economizer is equipped with 30% of return-air relief.

g. Designed to close damper during loss-ofpower situations with emergency power supply (Durablade economizer) or spring return built into motor (EconoMi$er).

h. Dry bulb outdoor-air thermostat (Durablade economizer) shall be provided as standard.

Enthalpy control shall be provided as an option.

i. Durablade economizer is a guillotine-style damper and EconoMi$er is a parallel-blade design.

NOTE: EconoMi$er shall also be available with field-installed power exhaust accessory.

* 4. Manual Outdoor-Air Damper:

Manual damper package shall consist of damper, birdscreen, and rainhood which can be preset to admit up to 50% outdoor air for yearround ventilation.

* 5. 100% Open Two-Position Damper: a. Two-position damper package shall include single blade damper and motor. Admits up to

100% outdoor air.

b. Damper shall close upon indoor (evaporator) fan shutoff.

c. Designed to close damper during loss of power situations.

d. Equipped with barometric relief damper.

* 6. 25% Open Two-Position Damper: a. Two-position damper package shall include single blade damper and motor. Admits up to

25% open outdoor air.

b. Damper shall close upon indoor (evaporator) fan shutoff.

c. Designed to close damper during loss of power situations.

d. Equipped with barometric relief damper.

* 7. Solid-State Enthalpy Control: a. For use with Durablade economizer package.

b. Capable of sensing outdoor-air enthalpy content (temperature and humidity) and

43

Guide specifications (cont)

controlling economizer cut-in point to have minimum heat content air passing over the evaporator coil for most efficient system operation.

* 8. Differential Enthalpy Sensor: a. For use with economizer only.

b. Capable of comparing enthalpy content

(temperature and humidity) of outdoor and indoor air and controlling economizer cutin point at the most economical level.

* 9. Electric Resistance Heaters: a. Open wire nichrome elements with all necessary safety operating controls.

b. UL (U.S.A. Standard) listed and indicated on basic unit informative plate.

c. Available in multiples to match heating requirements.

*10. Low-Ambient Operation (Head Pressure

Control) Package:

Consists of solid-state control and condensercoil temperature sensor to operate at outdoor ambient temperatures down to –17.8 C (0° F) by condenser-fan cycling.

*11. Thermostat and Subbase:

Provides staged cooling and heating automatic (or manual) changeover, fan control, and indicator light.

12. Thru-The-Bottom Service Connectors:

Kit shall provide connectors to permit electrical connections to be brought to the unit through the basepan.

*13. Electronic Programmable Thermostat:

Capable of using deluxe full-featured electronic thermostat. Shall use built-in compressor cycle delay control for both heating and cooling duty. Capable of working with

Carrier direct digital controls.

14. Condenser Coil Hail Guard Assembly:

Hail guard shall protect against damage from hail and flying debris.

15. Condenser Coil Grille:

The grille protects the condenser coil from damage by large objects without increasing unit clearances.

16. Compressor Cycle Delay:

Unit shall be prevented from restarting for a minimum of 5 minutes after shutdown.

17. Salt Spray Protection Package (008-014):

Coil guard protects coil from corrosion in coastal areas and in areas with high sulfur emissions.

18. Fan/Filter Status Switch:

Provides status of indoor fan (ON/OFF) or filter (CLEAN/DIRTY). Status shall be displayed over communication bus when used with direct digital controls or with an indicator light at the thermostat.

19. Unit-Mounted Disconnect Switch:

Shall be factory-installed. Internally mounted, non-fused switch provides unit power shutoff.

Shall be accessible from outside the unit.

20. Logo Kit:

Shall provide logo for field installation onto outdoor coil grille.

21. EconoMi$er and Power Exhaust:

Package shall provide control of internal building pressure. The system shall exhaust up to 100% of return air.

22. Power Exhaust for Accessory EconoMi$er:

Power exhaust shall be used in conjunction with EconoMi$er to provide the system with the capability to exhaust up to 100% of return air. The power exhaust is fieldinstalled accessory.

23. Outdoor-Air Enthalpy Sensor:

The outdoor-air enthlapy sensor shall be used with the EconoMi$er device to provide single enthalpy control. When used in conjunction with a return air enthalpy sensor, the EconoMi$er device will provide different enthalpy control. The sensor allows the

EconoMi$er controller to determine if outside air is suitable for free cooling.

24. Return-Air Enthalpy Sensor:

The return-air enthalpy sensor shall be used with the EconoMi$er device. When used in conjunction with an outdoor air enthalpy sensor, the EconoMi$er device will provide differential enthalpy control.

25. Return-Air Temperature Sensor:

The return-air temperature sensor shall be used with the EconoMi$er device. When used in conjunction with the standard outdoor air temperature sensor, the

EconoMi$er device will provide differential temperature control.

26. Indoor-Air Quality (CO

2

) Sensor: a. Shall have the ability to provide demand ventilation indoor-air quality (IAQ) control through the economizer with an IAQ sensor.

b. The IAQ sensor shall be available in duct mount, wall mount, and wall mount with

LED display. The set point shall have adjustment capability.

Carrier Corporation • Syracuse, New York 13221 204 9-00

Book 1

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

4 New Book 1 Page 44 Catalog No. 005-003 Printed in U.S.A.

Form 50TFF-C1PD

Tab 1b 6b Tab OP2b

Replaces: New

Carrier Product Data

Product

Data

50TFF007-014

Single-Package Rooftop Units

Electric Cooling with Electric Heat Option

50 Hz

Nominal Capacity: 17.6 kW to 35.9 kW

(5 to 10.2 Tons)

Features/Benefits

Compact, vertical discharge units convert to horizontal discharge, combining installation flexibility with efficient performance and easy maintenance.

Easy installation and conversion

Simple electrical connections

Proven compressor reliability

Durable, dependable construction

Integrated economizers and outdoor air

Quiet, efficient operation and dependable performance

Carrier Apollo controls add reliability, efficiency, and simplification

Table of contents

Features/Benefits (cont)

Indoor-air quality begins with

Carrier rooftops

Model number nomenclature

Quality Assurance

Physical data (SI)

Physical data (English)

Options and accessories

Options and accessories (cont)

Base unit dimensions — 50TFF007

Base unit dimensions — 50TFF008-014

Accessory dimensions

Accessory dimensions (cont)

Selection procedure (with 50TFF012 example) — SI

Selection procedure (with 50TFF012 example) —

English

Performance data

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Performance data (cont)

Electrical data

Typical piping and wiring — 50TFF007-014

(sizes 008-014 shown)

Typical wiring schematic (50TFF008-014 shown)

Controls

Operating sequence

TEMP systems

Controls (cont)

Variable Volume/Variable Temperature

(VVT®) Systems

Application data

Guide specifications

Packaged Rooftop Cooling Unit with

Electric Heat Option — Constant Volume

Application

HVAC Guide Specifications

Guide specifications (cont)

Related manuals

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GQ-C3259WX-FF US NG

Bryant

559E

Carrier

APOLLO CONTROL 50HJQ004-016

Carrier

48HJF004

Optimus

98588571M

Carrier

50TFQ008

Table of contents