Carrier Heat Pump 50TFQ008 012 User Manual

50TFQ008-012

Single-Package Rooftop

Heat Pump Units

Installation, Start-Up and

Service Instructions

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations. Have

fire extinguisher available for all brazing operations.

CONTENTS

Page

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . .1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43

Step 1— Provide Unit Support. . . . . . . . . . . . . . . . . . . . . . .1

•

ROOF CURB

Before performing service or maintenance operations on

unit, turn off main power switch to unit and install lockout

tag. Ensure voltage listed on unit data plate agrees with

electrical supply provided for the unit. Electrical shock

could cause personal injury.

SLAB MOUNT

ALTERNATE UNIT SUPPORT

Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . . . . . .3

Step 3 — Install Condensate Drain Line

and External Trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Step 4 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . . . . . . .3

•

POSITIONING

INSTALLATION

Step 5 — Make Electrical Connections . . . . . . . . . . . . . .7

•

FIELD POWER SUPPLY

FIELD CONTROL WIRING

DEFROST BOARD

Unit is shipped in the vertical configuration. To convert to

horizontal configuration, remove side duct opening covers. Us-

ing the same screws, install covers on vertical duct openings

with the insulation-side down. Seals around duct openings

must be tight.

HEAT ANTICIPATOR SETTINGS

Step 6 — Adjust Factory-Installed Options . . . . . . . . .12

•

DISCONNECT SWITCH

CONVENIENCE OUTLET

Step 1 — Provide Unit Support

NOVAR CONTROLS

ROOF CURB — Assemble and install the accessory roof curb

in accordance with instructions shipped with the curb. See

Fig. 1. Install insulation, cant strips, roofing felt, and counter

flashing as shown. Ductwork must be attached to curb. If

electric or control power will be routed through the basepan,

use the proper accessory kit listed in Fig. 1, available from your

local distributor. Attach the accessory thru-the-bottom service

connections to the basepan in accordance with the accessory

installation instructions. Connections must be installed before

the unit is set on the roof curb.

MANUAL OUTDOOR-AIR DAMPER

PREMIERLINK™ CONTROL

OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2

ECONOMI$ER IV STANDARD SENSORS

ECONOMI$ER IV CONTROL MODES

Step 7 — Adjust Indoor-Fan Speed . . . . . . . . . . . . . . . . .25

PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44-47

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-49

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-53

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

IMPORTANT: The gasketing of the unit to the roof curb is

critical for a water-tight seal. Install gasket supplied with

the roof curb as shown in Fig. 1. Improperly applied gasket

can also result in air leaks and poor unit performance.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-conditioning equipment.

The roof curb should be level. Unit leveling tolerances are

shown in Fig. 2. This is necessary for the unit drain to function

properly. Refer to Accessory Roof Curb Installation Instruc-

tions for additional information as required.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other

operations should be performed by trained service personnel.

When working on air-conditioning equipment, observe precau-

tions in the literature, tags and labels attached to the unit, and

other safety precautions that may apply.

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

Catalog No. 04-53500019-01 Printed in U.S.A. Form 50TFQ-9SI Pg 1 9-05 Replaces: 50TFQ-7SI

Book 1

Tab 5a 5a

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pitch the line away from the unit at ¹/₄-in. per ft of run. Do not

use a pipe size smaller than the unit connection. See Fig. 4.

Step 4 — Rig and Place Unit — Inspect the unit for

transportation damage. File any claim with the transportation

agency. Keep the unit upright and do not drop it. Spreader bars

are not required if top crating is left on the unit. Rollers may be

used to move the unit across a roof. Level by using the unit

frame as a reference. See Table 1 and Fig. 5 for additional

information. Operating weight is shown in Table 1 and Fig. 5.

Lifting holes are provided in the base rails as shown in

Fig. 5 and 6. Refer to rigging instructions on the unit.

POSITIONING — Maintain clearance around and above the

unit to provide proper airflow and service access. See Fig. 6.

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B

B-C

A-C

0.5

1.0

Fig. 2 — Unit Leveling Tolerances

Position the unit on the roof curb so that the following clear-

SLAB MOUNT (Horizontal Units Only) — Provide a level

concrete slab that extends a minimum of 6 in. beyond the unit

cabinet on all sides. Install a gravel apron in front of the

outdoor coil air inlet to prevent grass and foliage from obstruct-

ing airflow.

NOTE: Horizontal units may be installed on a roof curb if

required.

ALTERNATE UNIT SUPPORT — When the curb or

adapter cannot be used, support unit with sleeper rails using

unit curb or adapter support area. If sleeper rails cannot be

used, support the long sides of the unit with a minimum of

3 equally spaced 4-in. x 4-in. pads on each side.

ances are maintained: /₄-in. clearance between the roof curb

and base rails on each side and in front of the unit; 3⁵/₁₆-in.

clearance between the roof curb and the outdoor fan end of the

unit (see Fig. 1, section C-C).

Do not install the unit indoors. Do not locate the unit air

inlet near exhaust vents or other sources of contaminated air.

Although the unit is weatherproof, guard against water from

higher level runoff and overhangs.

After the unit is in position, remove the polyethylene ship-

ping wrapper and rigging skid.

Step 2 — Field Fabricate Ductwork — On verti-

cal discharge units, secure all ducts to the roof curb and building

structure. Do not connect ductwork to the unit. For horizontal

applications, field-supplied flanges should be attached to

horizontal discharge openings and all ductwork attached to the

flanges. Insulate and weatherproof all external ductwork, joints,

and roof openings with counter flashing and mastic in accor-

dance with applicable codes.

Ducts passing through an unconditioned space must be

insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return

should be ducted through the roof deck to comply with applica-

ble fire codes.

HORIZONTAL

DRAIN PLUG

DRAIN OUTLET

NOTE: Drain plug is shown in factory-installed position.

A minimum clearance is not required around ductwork.

Cabinet return-air static pressure (a negative condition) should

not exceed 0.35 in. wg with economizer, or 0.45 in. wg without

economizer.

Fig. 3 — Condensate Drain Pan (Side View)

Step 3 — Install Condensate Drain Line and

External Trap — Condensate drain connections are locat-

ed at the bottom and end of the unit. Unit discharge connec-

tions do not determine the use of drain connections;

either drain connection can be used in vertical or horizontal

applications.

When using the standard end drain connection, make sure

the plug in the alternate bottom connection is tight before in-

stalling the unit.

To use the bottom drain connection for a roof curb installa-

tion, relocate the factory-installed plug from the bottom connec-

tion to the end connection. The center drain plug looks like a star

connection, but can be removed with a ¹/₂-in. socket drive exten-

sion. See Fig. 3. The piping for the condensate drain and external

trap can be completed after the unit is in place.

All units must have an external trap for condensate drain-

age. Install a trap at least 4-in. deep and protect against freeze-

up. If drain line is installed downstream from the external trap,

NOTE: Trap should be deep enough to offset maximum unit static

difference. A 4-in. trap is recommended.

Fig. 4 — Condensate Drain Piping Details

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NOTES:

1. Dimension in ( ) is in millimeters.

2. Hook rigging shackles through holes in base rail, as shown in detail “A.”

Holes in base rails are centered around the unit center of gravity. Use

wooden top skid when rigging to prevent rigging straps from damaging

unit.

3. Unit weights do not include economizer. See Table 1 for economizer

weights.

WEIGHT

50TFQ

940

965

1015

in.

1054

in.

1070

008

009

012

426

438

460

77.42

1966.5 41.5

42.12

All panels must be in place when rigging. Unit is not designed for handling

by a fork truck. Damage to unit may result.

Fig. 5 — Rigging Details

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Table 1 — Physical Data

UNIT SIZE 50TFQ

008

7¹/₂

009

8¹/₂

012

NOMINAL CAPACITY (tons)

OPERATING WEIGHT (lb)

Unit

940

965

1015

Economizer

EconoMi$er IV

Roof Curb*

143

COMPRESSOR (Hermetic)

Quantity

Oil (oz)

Reciprocating

Scroll

54 ea

45 ea

54 ea

REFRIGERANT TYPE

Operating Charge (lb-oz)

Circuit 1

R-22

5-14

5-13

8- 6

8-13

7-14

8- 3

Circuit 2

OUTDOOR COIL

Rows...Fins/in.

Total Face Area (sq ft)

Enhanced Copper Tubes, Aluminum Lanced Fins, Acutrol™ Feed Device

1...17

20.50

2...17

18.00

2...17

18.30

OUTDOOR FAN

Propeller Type

6500

Nominal Cfm

6500

2...22

6500

2...22

Quantity...Diameter (in.)

Motor Hp...Rpm

Watts Input (Total)

2...22

¹/₄...1100

500

¹/₄...1100

500

¹/₄...1100

500

INDOOR COIL

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

Rows...Fins/in.

3...15

8.0

3...15

8.0

3...15

11.1

Total Face Area (sq ft)

INDOOR FAN

Centrifugal Type

Quantity...Size (in.)

Std

1...15 x 15

Belt

1...15 x 15

—

1...15 x 15

Belt

Alt

High-Static

Std

1...15 x 15

Belt

Type Drive

Alt

Belt

—

Belt

High-Static

Belt

Nominal Cfm

3000

3600

2.40

—

4000

Maximum Continuous Bhp

Motor Frame Size

Nominal Rpm

Std

Alt

2.40

2.90

High-Static

Std

3.70

5.25

Alt

—

High-Static

Std

—

Alt

—

High-Static

Std

1725

685- 935

—

1725

Fan Rpm Range

590- 840

685- 935

860-1080

Ball

685- 935

835-1085

830-1130

Ball

Alt

High-Static

860-1080

Ball

Motor Bearing Type

Maximum Allowable Rpm

2100

2.8/3.8

—

2100

Motor Pulley Pitch Diameter Min/Max (in.)

Std

Alt

2.4/3.4

2.8/3.8

3.4/4.4

High-Static

Std

4.0/5.0

2.8/3.8

Nominal Motor Shaft Diameter (in.)

Fan Pulley Pitch Diameter (in.)

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

Pulley Center Line Distance (in.)

Alt

—

High-Static

Std

7.⁸0

Alt

7.0

—

7.0

High-Static

Std

8.0

5.8

1...A...53

1...A...48

1...A...49

Alt

1...A...49

—

1...A...51

High-Static

Std

1...A...65

1...A...53

1...BX...48

16.75-19.25

15.85-17.50

Alt

16.75-19.25

—

15.85-17.50

High-Static

Std

16.75-19.25

15.85-17.50

Speed Change per Full Turn of

Moveable Pulley Flange (rpm)

—

Alt

High-Static

Std

Moveable Pulley Maximum Full Turns

From Closed Position

Alt

—

High-Static

Std

Factory Setting

Alt

—

High-Static

Std

Factory Speed Setting (rpm)

Fan Shaft Diameter at Pulley (in.)

590

685

860

685

—

880

685

835

887

Alt

High-Static

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief (Differential)

450 50

428

320

Cutout

Reset (Auto.)

LOSS-OF-CHARGE (LOW-PRESSURE) SWITCH (psig)

Cutout

Reset (Auto.)

FREEZE PROTECTION THERMOSTAT (F)

Opens

Closes

OUTDOOR-AIR INLET SCREENS

Cleanable.

Screen quantity and size vary based on options selected.

Throwaway

RETURN-AIR FILTERS

Quantity...Size (in.)

4...16 x 20 x 2

4...20 x 20 x 2

LEGEND

*Weight of 14-in. roof curb.

Bhp — Brake Horsepower

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When installing units, provide a disconnect per the NEC.

Step 5 — Make Electrical Connections

All field wiring must comply with the NEC and local re-

quirements. In Canada, electrical connections must be made in

accordance with CSA (Canadian Standards Association) C22.1

Canadian Electrical Code Part One.

Unit cabinet must have an uninterrupted, unbroken electri-

cal ground to minimize the possibility of personal injury if

an electrical fault should occur. This ground may consist of

electrical wire connected to unit ground lug in control com-

partment, or conduit approved for electrical ground when

installed in accordance with NEC (National Electrical

Code) ANSI (American National Standards Institute)/

NFPA (National Fire Protection Association) 70 latest year

and local electrical codes. Failure to follow this warning

could result in the installer being liable for personal injury

of others.

Install field wiring as follows:

1. Install conduit through the side panel openings. For units

without electric heat, install conduit between the discon-

nect and control box.

2. Install power lines to terminal connections as shown in

Fig. 7.

3. For units with electric heat, refer to Table 2 and Accessory

Installation Instructions.

During operation, voltage to compressor terminals must be

within range indicated on unit nameplate (see Tables 3A and

3B). On 3-phase units, voltages between phases must be bal-

anced within 2%, and the current within 10%. Use the formula

shown in Tables 3A and 3B, Note 2 on page 11 to determine

the percentage of voltage imbalance. Operation on improper

line voltage or excessive phase imbalance constitutes abuse

and may cause damage to electrical components. Such opera-

tion would invalidate any applicable Carrier warranty.

FIELD POWER SUPPLY — All units except 208/230-v

units are factory-wired for the voltage shown on the unit name-

plate. If the 208/230-v unit is to be connected to a 208-v power

supply, the transformer must be rewired by disconnecting the

black wire from the 230-v /₄-in. male spade terminal on the

transformer and connecting it to the 208-v /₄-in. male spade

terminal from the transformer.

Refer to the unit label diagram for additional information.

Pigtails are provided for field wire connections. Use factory-

supplied splices or a UL (Underwriters’ Laboratories) approved

copper/aluminum connector.

575-3-60

208/230-3-60

460-3-60

LEGEND

—

Contactor

COMP

IFC

NEC

Compressor

Indoor-Fan Contactor

National Electrical Code

Terminal Block

Field Wiring

Factory Wiring

Splice Connection

(Factory-Supplied)

Fig. 7 — Power Wiring Connections

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Table 2 — Electric Heating Capacities

ELECTRIC HEATER

SINGLE POINT BOX

PACKAGE NO.

CRSINGLE---A00

50TFQ

UNIT SIZE

UNIT VOLTAGE

(60 Hz)

ACCESSORY

PART NUMBER

CRHEATER---A00

7.8/ 9.6/10.4

12.0/14.7/16.0

18.6/22.8/24.8

24.0/29.4/32.0

31.8/39.0/42.4*

017

010

007

009

013

208/230/240

(3 phase)

011

012

012 and 017

12.8/13.9

15.2/16.5

25.6/27.8

30.4/33.0

38.4/41.7*

016

013

006

008

010

008, 009

460/480

(3 phase)

014

015

014 and 016

575

(3 phase)

17.0

34.0

018

019

006

006†

7.8/ 9.6/10.4

12.0/14.7/16.0

24.0/29.4/32.0

31.8/39.0/42.4*

37.6/46.2/50.0*

017

010

012

015

017

208/230/240

(3 phase)

012

012 and 017

010 and 012

15.2/16.5

25.6/27.8

30.4/33.0

38.4/41.7*

45.9/50.0*

013

014

011

014

016

012

460/480

(3 phase)

015

014 and 016

013 and 015

17.0

34.0

51.0*

018

019

018 and 019

011

014

016

575

(3 phase)

*Two heater packages required to provide kW indicated.

†Use CRSINGLE008A00 for units with an electrical convenience outlet.

NOTES:

1. The rated heater voltage is 240, 480, and 575 v. If power distribution voltage varies from rated heater voltage, heater kW will vary accordingly.

2. To determine heater kW at voltages other than those shown in table, use the following formula:

Heater kW new = Heater kW rated x (unit power distribution voltage/rated heater voltage)²

As an example:

For a 16 kW heater rated at 240 v with a power distribution voltage of 215 v

kW new = 16 kW (215/240)²

kW new = 12.8 kW (rating at 215 v)

Table 3A — Electrical Data (Units Without Electrical Convenience Outlet)

VOLTAGE COMPRESSOR

DISCONNECT

SIZE†

ELECTRIC HEAT*

POWER SUPPLY

RANGE

(each)

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

OFM IFM

FLA FLA

Nominal

FLA

Min Max RLA

LRA

MCA

MOCP

FLA

LRA

kW**

—

38.8/ 38.8

65.9/ 70.0

80.4/ 86.9

40/ 40††

70/ 70

90/ 90

110/125

125/150

150/175

45/ 45††

80/ 80

90/100

110/125

150/150

175/175

20††

41/ 41 229/229

66/ 69 251/254

7.8/10.4 21.7/ 25.0

12.0/16.0 33.3/ 38.5

79/ 85 262/268***

100/109 281/289***

117/129 296/306***

142/158 317/331***

46/ 46 273/273

STD

187 254

13.4

6.7

91.0

1.4

5.8

18.6/24.8 51.6/ 59.7 103.3/113.4

24.0/32.0 66.6/ 77.0 122.0/135.0

31.8/42.4 88.3/102.0 149.1/166.3

208/230-3-60

—

43.6/ 43.6

7.8/10.4 21.7/ 25.0 70.7/ 74.8

12.0/16.0 33.3/ 38.5 85.2/ 91.7

18.6/24.8 51.6/ 59.7 108.1/118.2

24.0/32.0 66.6/ 77.0 126.8/139.8

31.8/42.4 88.3/102.0 153.9/171.1

71/ 75 294/298

85/ 91 306/311***

106/115 324/332***

123/135 339/350***

148/164 361/375***

HIGH-STATIC 187 254

91.0

42.0

39.0

1.4 10.6

—

19.1

40.0

43.8

60.8

68.7

81.8

21.3

42.2

46.0

63.0

70.9

84.0

15.4

36.7

58.0

17.1

38.5

59.7

108

124

128

141

147

158

130

146

149

163

169

180***

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

40††

45††

008

STD

414 508

0.7

2.6

4.8

(7¹/₂Tons)

460-3-60

25††

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

45††

50††

HIGH-STATIC 414 508

6.7

20††

STD

2.6

4.8

17.0

34.0

—

17.1

34.1

—

40††

114

131

114

132

149

60††

575-3-60

518 632

5.4

20††

HIGH-STATIC

17.0

34.0

17.1

34.1

40††

60††

NOTE: Legend and Notes for Electrical Data are on page 11.

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Table 3A — Electrical Data (Units Without Electrical Convenience Outlet) (cont)

VOLTAGE

RANGE

COMPRESSOR

(each)

DISCONNECT

SIZE†

ELECTRIC HEAT*

POWER SUPPLY

50TFQ

NOMINAL

V-PH-Hz

IFM

OFM IFM

FLA FLA

UNIT SIZE

TYPE

Nominal

Min Max

RLA

LRA

FLA

MCA

MOCP

FLA

LRA

kW**

—

21.7/ 25.0

33.3/ 38.5

51.6/ 59.7

66.6/ 77.0

88.3/102.0

—

44.6/ 44.6

71.7/ 75.9

86.2/ 92.7

109.1/119.2

127.9/140.9

155.0/172.1

49.4/ 49.4

76.5/ 80.7

91.0/ 97.5

113.9/124.0

132.7/145.7

159.8/176.9

22.7

45/ 45††

80/ 80

90/100

110/125

150/150

175/175

50/ 50††

80/ 90

100/100

125/125

150/150

175/200

25††

45††

50††

47/ 47

72/ 75

85/ 91

106/115

123/135

148/164

52/ 52

77/ 81

91/ 96

112/121

129/141

154/170

321/321

343/346

354/360***

373/381***

388/398***

409/428***

365/365

386/390***

398/403***

416/424***

431/442***

453/467***

162

7.8/10.4

12.0/16.0

18.6/24.8

24.0/32.0

31.8/42.4

—

STD

187 254

16.0

137.0

1.4

0.7

1.4

0.7

5.8

10.6

2.6

208/230-3-60

7.8/10.4

12.0/16.0

18.6/24.8

24.0/32.0

31.8/42.4

—

21.7/ 25.0

33.3/ 38.5

51.6/ 59.7

66.6/ 77.0

88.3/102.0

—

HIGH-STATIC

187 254

414 508

518 632

187 254

414 508

16.0

8.3

137.0

69.0

13.9

16.7

43.6

47.4

64.4

178

182

195

201

212***

184

200

203

217

223

234***

135

152

169

152

170

187

16.5

19.8

009

STD

(8¹/₂Tons)

27.8

33.4

33.0

39.7

72.3

41.7

50.2

85.4

460-3-60

—

24.9

45.8

49.6

66.6

25††

50††

13.9

16.7

16.5

19.8

HIGH-STATIC

8.3

69.0

4.8

27.8

33.4

33.0

39.7

74.5

41.7

50.2

87.6

—

17.6

39.0

60.2

19.4

40.7

62.0

20††

40††

70††

20††

45††

STD

2.6

4.8

17.0

17.1

34.0

34.1

575-3-60

6.4

58.0

—

HIGH-STATIC

17.0

17.1

34.0

34.1

—

47.3/ 47.3

74.4/ 78.6

88.9/ 95.4

130.6/143.6

157.7/174.8

177.8/167.6

49.0/ 49.0

76.1/ 80.8

90.6/ 97.1

132.3/145.3

159.4/176.5

179.5/169.3

56.5/ 56.5

83.6/ 87.8

98.1/104.6

139.8/152.8

166.9/184.0

187.0/176.8

23.4

50/ 50††

80/ 80

90/100

150/150

175/175

200/175

50/ 50††

80/ 90

100/100

150/150

175/200

200/200

60/ 60††

90/ 90

100/110

150/175

175/200

200/200

25††

50††

49/ 49

74/ 78

88/ 94

126/138

151/167

170/188

51/ 51

76/ 80

90/ 96

128/140

153/169

171/190

60/ 60

85/ 89

98/104

137/149

162/177

180/198

295/295

317/320

328/334***

362/372***

383/397***

399/415***

314/314

336/389***

347/353***

381/391***

402/416***

418/434***

362/362

384/387***

395/401***

429/439***

450/464***

466/482***

143

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

STD

ALT

17.2

8.6

124.0

59.6

5.8

7.5

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

208/230-3-60

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

HIGH-STATIC

15.0

2.6

16.5

19.8

48.1

65.1

163

176

183

193***

203***

182

202

216

27.8

33.4

STD

33.0

39.7

73.0

41.7

50.2

86.1

50.0

60.1

83.5

012

(10 Tons)

—

24.2

48.9

65.9

25††

50††

16.5

19.8

27.8

33.4

460-3-60

ALT

8.6

59.6

3.4

33.0

39.7

73.8

222

41.7

50.2

86.9

233***

243***

176

196

210

50.0

60.1

84.3

—

28.2

52.9

69.9

30††

60††

16.5

19.8

27.8

33.4

HIGH-STATIC

8.6

59.6

7.4

33.0

39.7

77.8

216

41.7

50.0

—

17.0

50.2

60.1

—

17.1

90.9

88.3

18.7

40.1

100

20††

45††

227***

237***

118

135

152

STD

ALT

518 632

6.9

49.4

0.7

2.6

3.4

7.4

34.0

34.1

61.4

51.0

—

17.0

34.0

51.0

—

17.0

34.0

51.2

—

17.1

34.1

51.2

—

17.1

34.1

69.9

19.4

40.7

62.0

70.6

22.6

43.9

65.2

169

149

166

183

201***

145

162

20††

45††

575-3-60

25††

45††

HIGH-STATIC

179

51.0

51.2

73.8

196***

NOTE: Legend and Notes for Electrical Data are on page 11.

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Table 3B — Electrical Data (Units With Electrical Convenience Outlet)

VOLTAGE COMPRESSOR

RANGE (each)

ELECTRIC

HEAT*

DISCONNECT

SIZE†

POWER SUPPLY

50TFQ

UNIT SIZE

NOMINAL

V-PH-Hz

IFM

TYPE

OFM IFM

FLA FLA

Nominal

Min Max RLA

LRA

FLA

MCA

MOCP

FLA

LRA

kW**

—

43.6/ 43.6

70.7/ 74.8

85.2/ 91.7

45/ 45††

80/ 80

46/ 46 234/234

71/ 75 256/259

7.8/10.4 21.7/ 25.0

12.0/16.0 33.3/ 38.5

90/100

85/ 91 267/272***

106/115 285/294***

123/135 300/311***

148/164 322/336***

52/ 52 277/277

STD

187 254

13.4

6.7

91.0

1.4

5.8

18.6/24.8 51.6/ 59.7 108.1/118.2 110/125

24.0/32.0 66.6/ 77.0 126.8/139.8 150/150

31.8/42.4 88.3/102.0 153.9/171.1 175/175

208/230-3-60

—

48.4/ 48.4

75.5/ 79.6

90.0/ 96.5

50/ 50††

80/ 80

7.8/10.4 21.7/ 25.0

12.0/16.0 33.3/ 38.5

77/ 81 299/302***

90/ 96 311/316***

111/120 329/337***

128/140 344/354***

153/169 366/379***

90/100

HIGH-STATIC 187 254

91.0

42.0

1.4 10.6

18.6/24.8 51.6/ 59.7 112.9/123.0 125/125

24.0/32.0 66.6/ 77.0 131.6/144.6 150/150

31.8/42.4 88.3/102.0 158.7/175.9 175/200

—

21.3

42.1

25††

45††

50††

110

127

130

143

150

160***

132

148

151

165

171

182***

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

46.0

008

STD

414 508

0.7

2.6

4.8

(7¹/₂Tons)

63.0

70.9

84.0

460-3-60

23.5

25††

45††

50††

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

44.3

48.2

HIGH-STATIC 414 508

6.7

65.2

73.1

86.2

17.1

20††

40††

60††

20††

45††

STD

518 632

5.4

39.0

0.7

2.6

4.8

17.0

34.0

—

17.1

34.1

—

38.5

116

133

116

133

150

59.7

575-3-60

18.9

HIGH-STATIC 518 632

17.0

34.0

—

17.1

34.1

—

40.2

61.5

49.4/ 49.4

76.5/ 80.7

91.0/ 97.5

50/ 50††

80/ 90

100/100

125/125

150/150

175/200

60/ 60††

90/ 90

100/110

125/150

150/175

175/200

25††

50††

52/ 52 326/326

77/ 81 348/351

7.8/10.4 21.7/ 25.0

12.0/16.0 33.3/ 38.5

91/ 96 359/364

STD

187 254

16.0

8.3

137.0

69.0

1.4

5.8

18.6/24.8 51.6/ 59.7 113.9/124.0

24.0/32.0 66.6/ 77.0 132.7/145.7

31.8/42.4 88.3/102.0 154.8/176.9

112/121 377/386

129/141 392/403

154/170 414/428

58/ 58 369/369

208/230-3-60

—

54.2/ 54.2

81.3/ 85.5

95.8/102.3

7.8/10.4 21.7/ 25.0

12.0/16.0 33.3/ 38.5

83/ 86 391/394***

96/102 403/408***

117/126 421/429***

134/146 436/446***

159/175 458/471***

HIGH-STATIC 187 254

1.4 10.6

18.6/24.8 51.6/ 59.7 118.7/128.8

24.0/32.0 66.6/ 77.0 137.5/150.5

31.8/42.4 88.3/102.0 164.6/181.7

—

24.9

45.7

49.6

66.6

74.5

87.6

27.1

47.9

51.8

68.8

76.7

89.8

19.3

40.7

62.0

21.1

42.5

63.7

164

181

184

197

204

214***

186

202

205

219

225

236***

137

154

171

154

171

188

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

009

STD

414 508

0.7

2.6

(8¹/₂Tons)

460-3-60

30††

50††

60††

13.9

16.5

27.8

33.0

41.7

—

16.7

19.8

33.4

39.7

50.2

—

HIGH-STATIC 414 508

8.3

69.0

4.8

20††

45††

STD

518 632

6.4

58.0

0.7

2.6

4.8

17.0

34.0

—

17.1

34.1

—

575-3-60

25††

45††

HIGH-STATIC 518 632

17.0

34.0

17.1

34.1

NOTE: Legend and Notes for Electrical Data are on page 11.

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Table 3B — Electrical Data (Units With Electrical Convenience Outlet) (cont)

VOLTAGE

RANGE

COMPRESSOR

(each)

ELECTRIC

HEAT*

DISCONNECT

SIZE†

POWER SUPPLY

50TFQ

NOMINAL

V-PH-Hz

IFM

OFM

FLA

IFM

UNIT SIZE

TYPE

FLA

Nominal

Min Max

RLA

LRA

FLA

MCA

MOCP

FLA

LRA

kW**

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

52.1/ 52.1

79.2/ 83.4

93.7/100.2

135.4/148.4

162.5/179.6

182.6/172.4

53.8/ 53.8

80.9/ 85.1

95.4/101.9

137.1/150.1

164.2/181.3

184.3/174.1

61.3/ 61.3

88.4/ 92.6

102.9/109.4

144.6/157.6

171.7/188.8

191.8/181.6

25.5

60/ 60††

80/ 90

100/110

150/150

175/200

200/200

60/ 60††

90/ 90

100/110

150/175

175/200

200/200

70/ 70

90/100

110/110

150/175

175/200

200/200

30††

60††

55/ 55

80/ 84

93/ 99

132/144

157/172

175/193

57/ 57

82/ 86

95/101

134/145

158/174

177/195

66/ 66

91/ 94

104/110

142/154

167/183

186/204

300/300

322/325***

333/338***

366/377***

388/402***

404/420***

319/319

341/344***

352/357***

385/396***

407/421***

423/439***

367/367

389/392***

400/405***

433/444***

455/459***

471/487***

145

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

STD

ALT

187

414

254

508

17.2

124.0

1.4

0.7

5.8

7.5

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

208/230-3-60

17.2

8.6

124.0

59.6

7.8/10.4

12.0/16.0

24.0/32.0

31.8/42.4

37.6/50.0

—

21.7/ 25.0

33.3/ 38.5

66.6/ 77.0

88.3/102.0

104.4/120.3

—

HIGH-STATIC

15.0

2.6

16.5

27.8

33.0

41.7

50.0

—

16.5

27.8

33.0

41.7

50.0

—

16.5

27.8

33.0

19.8

33.4

39.7

50.2

50.3

67.3

165

178

STD

75.2

185

88.3

195***

205***

185

60.1

85.6

012

(10 Tons)

—

26.3

51.1

68.1

30††

60††

19.8

33.4

39.7

50.2

204

218

460-3-60

ALT

8.6

59.6

3.4

76.0

224

89.1

235***

245***

179

60.1

86.4

—

30.3

55.1

72.1

35††

60††

19.8

33.4

39.7

198

212

HIGH-STATIC

8.6

59.6

7.4

80.0

218

41.7

50.0

—

17.0

50.2

60.1

—

17.1

93.1

90.4

20.5

41.8

100

25††

45††

102

229***

239***

120

137

154

STD

ALT

518

632

6.9

49.4

0.7

2.6

3.4

7.4

34.0

34.1

63.1

51.0

—

17.0

34.0

51.0

—

17.0

34.0

51.2

—

17.1

34.1

51.2

—

17.1

34.1

71.7

21.1

42.5

63.7

72.3

24.3

45.7

66.9

171***

151

168

185

202***

146

25††

45††

575-3-60

25††

50††

163

180

HIGH-STATIC

51.0

51.2

75.5

198***

LEGEND

Full Load Amps

% Voltage Imbalance

FLA

—

max voltage deviation from average voltage

average voltage

= 100 x

HACR

IFM

Heating, Air Conditioning and Refrigeration

Indoor Fan Motor

Example: Supply voltage is 460-3-60.

LRA

MCA

Locked Rotor Amps

Minimum Circuit Amps

AB = 452 v

BC = 464 v

AC = 455 v

MOCP — Maximum Overcurrent Protection

NEC

OFM

RLA

—

National Electrical Code

Outdoor Fan Motor

Rated Load Amps

452 + 464 + 455

Average Voltage =

1371

= 457

Determine maximum deviation from average voltage.

(AB) 457 – 452 = 5 v

(BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v

*Heaters are field installed only.

†Used to determine minimum disconnect size per NEC.

Maximum deviation is 7 v.

**Heater capacity (kW) is based on heater voltage of 208 v, 240 v, 480 v, and 575 v. If

power distribution voltage to unit varies from rated heater voltage, heater kW will vary

accordingly.

††Fuse or HACR circuit breaker.

***Optional disconnect switch is unavailable.

Determine percent of voltage imbalance.

457

% Voltage Imbalance = 100 x

= 1.53%

NOTES:

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

2%.

1. In compliance with NEC requirements 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.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local

electric utility company immediately.

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FIELD CONTROL WIRING — Install a Carrier-approved

accessory thermostat assembly according to the installation

instructions included with the accessory. Locate the thermostat

assembly on a solid wall in the conditioned space to sense aver-

age temperature in accordance with the thermostat installation

instructions.

DEFROST BOARD — The defrost board timer cycle is set to

30 minutes. To change the cycle time, turn off power to the

unit and install lockout tag. Remove the wire from defrost

board connected to the 30 minute quick-connect. See Fig. 10.

Connect the wire to the 50 or 90 minute quick-connects on the

defrost board, depending on the desired defrost time.

NOTE: If using a Carrier electronic thermostat, set the thermo-

stat configuration for “non-heat pump operation.” This family

of products does not require an O terminal to energize the

reversing valve.

Route the thermostat cable or equivalent single leads of

colored wire from the subbase terminals to the low-voltage

connections on the unit (shown in Fig. 8A and 8B) as described

in Steps 1 through 4 below.

HEAT ANTICIPATOR SETTINGS — For units with electric

heat, set heat anticipator settings as shown in Table 4.

Step 6 — Adjust Factory-Installed Options

DISCONNECT SWITCH — The optional disconnect switch

is non-fused. The switch can be locked in place for safety

purposes.

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American

Wire Gage) insulated wire (35 C minimum). For 51 to 75 ft,

use no. 16 AWG insulated wire (35 C minimum). For over

75 ft, use no. 14 AWG insulated wire (35 C minimum). All

wire larger than no. 18 AWG cannot be directly connected to

the thermostat and will require a junction box and splice at the

thermostat.

1. If the unit is mounted on the roof curb and the accessory

thru-the-curb service plate connection is used, route wire

through the connection plate.

2. Pass control wires through the hole provided on the unit

(see connection D in Connection Sizes table in Fig. 6).

3. Feed wire through the raceway built into the corner post to

the 24-v barrier located on the left side of the control box.

See Fig. 9. The raceway provides the UL required clear-

ance between the high-voltage and low-voltage wiring.

THERMOSTAT CONTROL

CONNECTION

BOARD

CONTROL

CONNECTION

BOARD

24 VAC

RMTOCC

CMPSAFE

FSD

SFS

NOT USED

4. Connect the thermostat wires to the screw terminals of

the low-voltage connector (see Fig. 8A and 8B).

Fig. 8B — Low Voltage Connections

(Units with PremierLink™ Controls)

NOTE: If the unit is mounted on a roof curb and electrical

power will be run up “thru-the-bottom,” use accessory kit

number CRBTMPWR002A01. This kit, available from your

local distributor, ensures a watertight seal. Refer to the acces-

sory installation instructions for information on power wiring.

Refer to Fig. 6 for drilling holes in basepan.

DISCONNECT

BOARD

COOL STAGE 1

FAN

Y1/W2

DISCONNECT

SWITCH

(OPTIONAL)

WIRE

HEAT STAGE 1

COOL STAGE 2

HEAT STAGE 2

24 VAC HOT

W/W1

Y/Y2

O/W2

CONNECTIONS

LOW-VOLTAGE

SECTION

(CONNECTION

BOARD)

RACEWAY

24 VAC COM

N/A

IPD/X

COMPRESSOR

NO. 2

OUTDOOR AIR

SENSOR

CONVENIENCE

OUTLET

HOLE IN

END

PANEL

THERMOSTAT DIPSWITCH SETTINGS

OFF

LEGEND

Field Wiring

NOTE: Underlined letter indicates active thermostat output when

configured for A/C operation.

COMPRESSOR NO. 1

Fig. 8A — Low-Voltage Connections With or

Without Economizer or Two-Position Damper

Fig. 9 — Typical Field Control Wiring Raceway

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Table 4 — Heat Anticipator Settings

UNIT VOLTAGE

460

208/230

Configuration

575

Configuration

UNIT

Configuration

Heater

kW*

Heater

kW*

Heater

kW*

2-Stage

Stage 1 Stage 2

2-Stage

1-Stage

Stage 1 Stage 2

10.4, 16.0

24.8, 32.0

42.4, 50.0

0.3

0.6

0.9

0.3

0.6

0.3

13.9, 16.5

27.8, 33.0

41.7, 50.0

0.3

0.6

0.3

17.0, 34.0

51.0

0.3

0.6

0.3

50TFQ

*kW is based on 240, 480, or 575 v.

CONVENIENCE OUTLET — An optional convenience out-

let provides power for rooftop use. For maintenance personnel

safety, the convenience outlet power is off when the unit dis-

connect is off. Adjacent unit outlets may be used for service

tools. An optional “Hot Outlet” is available from the factory as

a special order item.

NOVAR CONTROLS — Optional Novar controls (ETM 3051)

are available for replacement or new construction jobs.

MANUAL OUTDOOR-AIR DAMPER — The outdoor-air

hood and screen are attached to the basepan at the bottom of

the unit (for shipping).

Assembly:

1. Determine the amount of ventilation required for build-

ing. Record the amount for use in Step 8.

2. Remove the filter access panel by raising the panel and

swinging it outward. The panel is now disengaged from

the track and can be removed. No tools are required to re-

move the filter access panel. Remove the outdoor-air

opening panel. Save the panels and screws. See Fig. 11.

3. Separate the hood and screen from the basepan by remov-

ing the screws and brackets securing them. Save all

screws and discard the brackets.

4. Replace the outdoor air opening panel.

5. Place the hood on the front of the outdoor air opening

panel. See Fig. 12 for hood details. Secure the top of the

hood with the 6 screws removed in Step 3. See Fig. 13.

Fig. 10 — Defrost Board

6. Remove and save the 8 screws (4 on each side) from the

sides of the manual outdoor-air damper.

7. Align the screw holes on the hood with the screw holes

on the side of the manual outdoor-air damper. See Fig. 12

and 13. Secure the hood with the 8 screws from Step 6.

8. Adjust the minimum position setting of the damper blade

by adjusting the manual outdoor-air adjustment screws on

the front of the damper blade. See Fig. 11. Slide the blade

vertically until it is in the appropriate position determined

by Fig. 14. Tighten the screws.

FILTER

ACCESS

PANEL

OUTDOOR AIR

OPENING

PANEL

SCREWS

(SIDE)

9. Remove and save the screws currently on the sides of

hood. Insert the screen. Secure the screen to the hood

using the screws. See Fig. 13.

10. Replace the filter access panel. Ensure that the filter

access panel slides along the tracks and is securely

engaged.

MANUAL

OUTDOOR-AIR

ADJUSTMENT

SCREWS

DAMPER

BLADE

Fig. 11 — Damper Panel with Manual

Outdoor-Air Damper Installed

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PREMIERLINK™ CONTROL — The PremierLink control-

ler is compatible with Carrier Comfort Network® (CCN)

devices. This control is designed to allow users the access and

ability to change factory-defined settings, thus expanding

the function of the standard unit control board. Carrier’s diag-

nostic standard tier display tools such as Navigator™ module

or Scrolling Marquee can be used with the PremierLink

controller.

The PremierLink controller (see Fig. 15A and 15B) requires

a Carrier electronic thermostat or a CCN connection for time

broadcast to initiate its internal timeclock. This is necessary for

broadcast of time of day functions (occupied/unoccupied). Re-

fer to Fig. 16. The PremierLink control may be mounted in the

control panel or an area below the control panel.

NOTE: PremierLink versions 1.3 and later are shipped in Sen-

sor mode. If used with a thermostat, the PremierLink control

must be configured to Thermostat mode.

The PremierLink control includes a supply-air temperature

sensor (SAT) and an outdoor-air temperature sensor (OAT) as

standard. An indoor-air quality (CO₂) sensor can be added as

an option. Refer to Table 5 for sensor usage.

Install the Supply Air Temperature (SAT) Sensor — When

the unit is supplied with a factory-mounted PremierLink con-

trol, the supply-air temperature (SAT) sensor (33ZCSENSAT)

is factory-supplied and wired. The wiring is routed from the

PremierLink control over the control box, through a grommet,

into the fan section, down along the back side of the fan, and

along the fan deck over to the supply-air opening.

Fig. 12 — Outdoor-Air Hood Details

The SAT probe is wire-tied to the supply-air opening (on the

horizontal opening end) in its shipping position. Remove the

sensor for installation. Re-position the sensor for installation.

Re-position the sensor in the flange of the supply-air opening

or in the supply air duct (as required by local codes). Drill or

SCREW

HOLES

(TOP)

HOOD

punch a /₂-in. hole in the flange or duct. Use two field-

supplied, self-drilling screws to secure the sensor probe in a

horizontal orientation.

HOOD

NOTE: The sensor must be mounted in the discharge airstream

downstream of the cooling coil and any heating devices. Be

sure that the probe tip does not come in contact with any of the

unit or heat surfaces.

SCREEN

LOCATION

(SCREEN

NOT

SHOWN)

Outdoor Air Temperature (OAT) Sensor — When the unit is

supplied with a factory-mounted PremierLink control, the

outdoor-air temperature (OAT) sensor is factory-supplied and

wired.

Fig. 13 — Optional Manual Outdoor-Air

Damper with Hood Attached

Install the Indoor Air Quality (CO₂) Sensor — Mount the

optional indoor air quality (CO₂) sensor according to manufac-

turer specifications.

A separate field-supplied transformer must be used to pow-

er the CO₂sensor.

Wire the CO₂sensor to the COM and IAQI terminals of J5

on the PremierLink controller. Refer to the PremierLink Instal-

lation, Start-up, and Configuration Instructions for detailed

wiring and configuration information.

Fig. 14 — Outdoor Air Damper Position Setting

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Table 5 — PremierLink™ Sensor Usage

OUTDOOR AIR

TEMPERATURE SENSOR

RETURN AIR

TEMPERATURE SENSOR

OUTDOOR AIR

ENTHALPY SENSOR

RETURN AIR

ENTHALPY SENSOR

APPLICATION

Dry Bulb

Temperature with

PremierLink™*

(PremierLink

requires 4-20 mA

Actuator)

Included —

HH79NZ017

—

Differential Dry Bulb

Temperature with

PremierLink*

Required —

33ZCT55SPT

or Equivalent

Included —

—

(PremierLink

HH79NZ017

requires 4-20 mA

Actuator)

Single Enthalpy with

PremierLink*

Included —

Not Used

Required —

HH57AC077

(PremierLink

—

requires 4-20 mA

Actuator)

Differential Enthalpy

with PremierLink*

(PremierLink

requires 4-20 mA

Actuator)

Included —

Not Used

Required —

HH57AC077

Required —

HH57AC078

*PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT and

Outdoor Air Temperature Sensor HH79NZ017 — Included with factory-installed PremierLink control;

field-supplied and field-installed with field-installed PremierLink control.

NOTES:

1. CO₂Sensors (Optional):

33ZCSENCO2 — Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.

33ZCASPCO2 — Aspirator box used for duct-mounted CO₂room sensor.

33ZCT55CO2 — Space temperature and CO₂room sensor with override.

33ZCT56CO2 — Space temperature and CO₂room sensor with override and set point.

2. All units include the following Standard Sensors:

Outdoor-Air Sensor — 50HJ540569 — Opens at 67 F, closes at 52 F, not adjustable.

Mixed-Air Sensor — HH97AZ001 — (PremierLink control requires Supply Air Temperature sensor 33ZCSENSAT

and Outdoor Air Temperature Sensor HH79NZ017)

Compressor Lockout Sensor — 50HJ540570 — Opens at 35 F, closes at 50 F.

Fig. 15A — PremierLink Controller

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PREMIERLINK

CONTROL

HINGED

DOOR

PANEL

PREMIERLINK

COVER

Fig. 15B — PremierLink™ Controller (Installed)

BLK

VIO

RED

HK50AA039

TB - 2

SAT

BLU

PNK

VIO

PNK

BRN

BLK

BLU

BRN

ORN

PNK

VIO

PremierLink

BRN

BLK

OAT

BRN

RED

BLU

Space Temp./ Set

Point Adjustment

BRN

RED

YEL

BLU

GRN

YEL

BLU

Indoor Air

Quality Sensor

BRN

BLU

ORN

WHT

PNK

GRA

BLK

Outdoor Air

Quality Sensor

PP/MP

0-20 mA

Relays

COMMS

PWR

RED

BLU

Power Exhaust/Energy Recycler

GRA

ORN

PNK

TB - 3

PNK

WHT GRA

ORN ORN

BRN

YEL

ORN

RED

RMTOCC

GRN

YEL

GRA

BLK

TB - 1

RED

WHT

CMPSAFE

FSD

RED

GRA

BLU

TR1

WHT

SFS

ORN

PNK

RED

ORN

PNK

GRAY

OUTDOOR AIR

ENTHALPY SENSOR

CCN

WHT

BLK

WHT

Comm.

BLK

Economi$er2

4 - 20mA

RED

BRN

LEGEND

COMMS — Communications

RTU Terminal

Board

OAT

PWR

SAT

—

Outdoor Air Temperature Sensor

Power

RETURN AIR

ENTHALPY

SENSOR

Supply Air Temperature Sensor

RED

BRN

Fig. 16 — Typical PremierLink Controls Wiring

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Enthalpy Sensors and Control — The enthalpy control

(HH57AC077) is supplied as a field-installed accessory to be

used with the economizer damper control option. The outdoor

air enthalpy sensor is part of the enthalpy control. The separate

field-installed accessory return air enthalpy sensor

(HH57AC078) is required for differential enthalpy control.

ENTHALPY CONTROLLER

(OUTDOOR

AIR

RED

BRN

ENTHALPY

SENSOR)

TR1

BLK

RED

(RETURN AIR

ENTHALPY

SENSOR)

NOTE: The enthalpy control must be set to the “D” setting for

differential enthalpy control to work properly.

GRAY/ORN

GRAY/RED

WIRE HARNESS

IN UNIT

The enthalpy control receives the indoor and return

enthalpy from the outdoor and return air enthalpy sensors and

provides a dry contact switch input to the PremierLink™

controller. Locate the controller in place of an existing econo-

mizer controller or near the actuator. The mounting plate may

not be needed if existing bracket is used.

A closed contact indicates that outside air is preferred to the

return air. An open contact indicates that the economizer

should remain at minimum position.

LED

NOTES:

1. Remove factory-installed jumper across SR and + before con-

necting wires from return air sensor.

2. Switches shown in high outdoor air enthalpy state. Terminals 2

and 3 close on low outdoor air enthalpy relative to indoor air

enthalpy.

3. Remove sensor mounted on back of control and locate in out-

door airstream.

Outdoor Air Enthalpy Sensor/Enthalpy Controller

(HH57AC077) — To wire the outdoor air enthalpy sensor,

perform the following (see Fig. 17 and 18):

Fig. 17 — Outdoor and Return Air Sensor Wiring

Connections for Differential Enthalpy Control

NOTE: The outdoor air sensor can be removed from the back

of the enthalpy controller and mounted remotely.

1. Use a 4-conductor, 18 or 20 AWG cable to connect the

enthalpy control to the PremierLink controller and power

transformer.

2. Connect the following 4 wires from the wire harness

located in rooftop unit to the enthalpy controller:

HH57AC077

ENTHALPY

a. Connect the BRN wire to the 24 vac terminal (TR1)

on enthalpy control and to pin 1 on 12-pin harness.

b. Connect the RED wire to the 24 vac GND terminal

(TR) on enthalpy sensor and to pin 4 on 12-pin

harness.

CONTROL AND

OUTDOOR AIR

ENTHALPY

SENSOR

BRACKET

c. Connect the GRAY/ORN wire to J4-2 on Premier-

Link controller and to terminal (3) on enthalpy

sensor.

d. Connect the GRAY/RED wire to J4-1 on Premier-

Link controller and to terminal (2) on enthalpy sensor.

NOTE: If installing in a Carrier rooftop, use the two gray wires

provided from the control section to the economizer to connect

PremierLink controller to terminals 2 and 3 on enthalpy sensor.

If NOT using Carrier equipment, wires may need to be field

supplied and installed.

HH57AC078 ENTHALPY

SENSOR (USED WITH

ENTHALPY CONTROL

FOR DIFFERENTIAL

C7400A1004

ENTHALPY OPERATION)

Return Air Enthalpy Sensor — Mount the return-air enthalpy

sensor (HH57AC078) in the return-air duct. The return air

sensor is wired to the enthalpy controller (HH57AC077). The

outdoor enthalpy changeover set point is set at the controller.

To wire the return air enthalpy sensor, perform the follow-

ing (see Fig. 17):

1. Use a 2-conductor, 18 or 20 AWG, twisted pair cable to

connect the return air enthalpy sensor to the enthalpy

controller.

MOUNTING PLATE

2. At the enthalpy control remove the factory-installed

resistor from the (SR) and (+) terminals.

3. Connect the field-supplied RED wire to (+) spade

connector on the return air enthalpy sensor and the (SR+)

terminal on the enthalpy controller. Connect the BLK

wire to (S) spade connector on the return air enthalpy

sensor and the (SR) terminal on the enthalpy controller.

Fig. 18 — Differential Enthalpy Control,

Sensor and Mounting Plate (33AMKITENT006)

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OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2 —

See Fig. 19 for EconoMi$er IV component locations. See

Fig. 20 for EconoMi$er2 component locations.

NOTE: These instructions are for installing the optional

EconoMi$er IV and EconoMi$er2 only. Refer to the accessory

EconoMi$er IV or EconoMi$er2 installation instructions when

field installing an EconoMi$er IV or EconoMi$er2 accessory.

1. To remove the existing unit filter access panel, raise the

panel and swing the bottom outward. The panel is now

disengaged from the track and can be removed. See

Fig. 21.

4. Swing out indoor coil access panel and insert the hood

sides under the panel (hood top). Use the screws provided

to attach the hood sides to the hood top. Use screws pro-

vided to attach the hood sides to the unit. See Fig. 24.

5. Remove the shipping tape holding the economizer baro-

metric relief damper in place.

FILTER ACCESS PANEL

2. The box with the economizer hood components is

shipped in the compartment behind the economizer. The

EconoMi$er IV controller is mounted on top of the

EconoMi$er IV in the position shown in Fig. 19. The

optional EconoMi$er2 with 4 to 20 mA actuator signal

control does not include the EconoMi$er IV controller.

To remove the component box from its shipping position,

remove the screw holding the hood box bracket to the top

of the economizer. Slide the hood box out of the unit. See

Fig. 22.

IMPORTANT: If the power exhaust accessory is to be

installed on the unit, the hood shipped with the unit will not

be used and must be discarded. Save the aluminum filter

for use in the power exhaust hood assembly.

INDOOR COIL ACCESS PANEL

Fig. 21 — Typical Access Panel Locations

3. The indoor coil access panel will be used as the top of the

hood. Remove the screws along the sides and bottom of

the indoor coil access panel. See Fig. 23.

ECONOMI$ER IV

CONTROLLER

HOOD BOX

BRACKET

OUTSIDE AIR

WIRING

TEMPERATURE SENSOR

HARNESS

LOW AMBIENT

SENSOR

ACTUATOR

Fig. 22 — Hood Box Removal

Fig. 19 — EconoMi$er IV Component Locations

OUTDOOR

AIR HOOD

SIDE

PANEL

ECONOMI$ER2

HOOD

PLUG

SHIPPING

BRACKET

TOP

SIDE

PANEL

CAULK

HERE

INDOOR

COIL

ACCESS

PANEL

INDOOR

COIL

ACCESS

PANEL

GEAR DRIVEN

DAMPER

BAROMETRIC

RELIEF

DAMPER

Fig. 20 — EconoMi$er2 Component Locations

Fig. 23 — Indoor Coil Access Panel Relocation

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6. Insert the hood divider between the hood sides. See

Fig. 24 and 25. Secure hood divider with 2 screws on

each hood side. The hood divider is also used as the bot-

tom filter rack for the aluminum filter.

7. Open the filter clips which are located underneath the

hood top. Insert the aluminum filter into the bottom filter

rack (hood divider). Push the filter into position past the

open filter clips. Close the filter clips to lock the filter into

place. See Fig. 25.

8. Caulk the ends of the joint between the unit top panel and

the hood top. See Fig. 23.

9. Replace the filter access panel.

10. Install all EconoMi$er IV accessories. EconoMi$er IV

wiring is shown in Fig. 26. EconoMi$er2 wiring is shown

in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air

leakage is shown in Fig. 29. Return air pressure drop is shown

in Fig. 30.

22 1/4”

TOP

PANEL

INDOOR COIL

ACCESS PANEL

DIVIDER

LEFT

HOOD

SIDE

SCREW

OUTSIDE

AIR

24 9/16”

HOOD

CLEANABLE

ALUMINUM

FILTER

40 3/8”

FILTER

HOOD DIVIDER

BAROMETRIC

RELIEF

Fig. 24 — Outdoor-Air Hood Construction

FILTER

CLIP

Fig. 25 — Filter Installation

FOR OCCUPANCY CONTROL

REPLACE JUMPER WITH

FIELD-SUPPLIED TIME CLOCK

Potentiometer Defaults Settings:

Power Exhaust Middle

LEGEND

NOTES:

1. 620 ohm, 1 watt 5% resistor should be removed only when using differential

DCV— Demand Controlled Ventilation

IAQ — Indoor Air Quality

Minimum Pos.

DCV Max.

DCV Set

Fully Closed

enthalpy or dry bulb.

Middle

2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power

supply, it cannot have the secondary of the transformer grounded.

3. For field-installed remote minimum position POT, remove black wire jumper

between P and P1 and set control minimum position POT. to the minimum

position.

LA — Low Ambient Lockout Device

OAT — Outdoor-Air Temperature

POT— Potentiometer

Middle

Enthalpy

C Setting

RAT — Return-Air Temperature

Fig. 26 — EconoMi$er IV Wiring

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BLACK

BLUE

500 OHM

RESISTOR

VIOLET

PINK

NOTE 1

NOTE 3

RUN

RED

50HJ540573

ACTUATOR

ASSEMBLY

OPTIONAL CO2

SENSOR 4 - 20 mA

OUTPUT

WHITE

DIRECT DRIVE

ACTUATOR

ECONOMISER2 PLUG

NOTES:

1. Switch on actuator must be in run position for economizer to operate.

2. PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sensor or HH57A077

enthalpy sensor.

3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

Fig. 27 — EconoMi$er2 with 4 to 20 mA Control Wiring

6000

5000

4000

2500

2000

1500

1000

3000

2000

500

1000

0.15

0.05

0.25

0.05

0.10

0.15

0.20

0.25

0.30

0.35

STATIC PRESSURE (in. wg)

Fig. 28 — Barometric Flow Capacity

Fig. 30 — Return-Air Pressure Drop

0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50

STATIC PRESSURE (in. wg)

Fig. 29 — Outdoor-Air Damper Leakage

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ECONOMI$ER IV STANDARD SENSORS

Table 7 — EconoMi$er IV Sensor Usage

Outdoor Air Temperature (OAT) Sensor — The outdoor air

temperature sensor (HH57AC074) is a 10 to 20 mA device

used to measure the outdoor-air temperature. The outdoor-air

temperature is used to determine when the EconoMi$er IV can

be used for free cooling. The sensor is factory-installed on the

EconoMi$er IV in the outdoor airstream. See Fig. 19. The op-

erating range of temperature measurement is 40 to 100 F.

Supply Air Temperature (SAT) Sensor — The supply air

temperature sensor is a 3 K thermistor located at the inlet of the

indoor fan. See Fig. 31. This sensor is factory installed. The op-

erating range of temperature measurement is 0° to 158 F. See

Table 6 for sensor temperature/resistance values.

ECONOMI$ER IV WITH OUTDOOR AIR

DRY BULB SENSOR

Accessories Required

APPLICATION

Outdoor Air

Dry Bulb

Differential

Dry Bulb

None. The outdoor air dry bulb sensor

is factory installed.

CRTEMPSN002A00*

Single Enthalpy

HH57AC078

and

Differential

Enthalpy

CRENTDIF004A00*

CO₂for DCV

Control using a

Wall-Mounted

CO₂Sensor

CO₂for DCV

Control using a

Duct-Mounted

CO₂Sensor

33ZCSENCO2

The temperature sensor looks like an eyelet terminal with

wires running to it. The sensor is located in the “crimp end”

and is sealed from moisture.

33ZCSENCO2†

and

CRCBDIOX005A00††

33ZCASPCO2**

Table 6 — Supply Air Sensor Temperature/

Resistance Values

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are

used on many different base units. As such, these kits may con-

tain parts that will not be needed for installation.

TEMPERATURE (F)

RESISTANCE (ohms)

–58

–40

–22

–4

104

122

140

158

176

185

194

212

230

248

257

266

284

302

200,250

100,680

53,010

29,091

16,590

9,795

5,970

3,747

3,000

2,416

1,597

1,080

746

†33ZCSENCO2 is an accessory CO₂sensor.

**33ZCASPCO2 is an accessory aspirator box required for duct-

mounted applications.

††CRCBDIOX005A00 is an accessory that contains both

33ZCSENCO2 and 33ZCASPCO2 accessories.

Outdoor Dry Bulb Changeover — The standard controller is

shipped from the factory configured for outdoor dry bulb

changeover control. The outdoor air and supply air temperature

sensors are included as standard. For this control mode, the

outdoor temperature is compared to an adjustable set point

selected on the control. If the outdoor-air temperature is above

the set point, the EconoMi$er IV will adjust the outdoor air

dampers to minimum position. If the outdoor-air temperature is

below the set point, the position of the outdoor air dampers will

be controlled to provide free cooling using outdoor air. When

in this mode, the LED next to the free cooling set point potenti-

ometer will be on. The changeover temperature set point is

controlled by the free cooling set point potentiometer located

on the control. See Fig. 32. The scale on the potentiometer is A,

B, C, and D. See Fig. 33 for the corresponding temperature

changeover values.

525

376

321

274

203

153

116

102

Outdoor Air Lockout Sensor — The Economi$er IV is

equipped with an ambient temperature lockout switch located

in the outdoor air stream which is used to lockout the compres-

sors below a 42 F ambient temperature. See Fig. 19.

SUPPLY AIR

TEMPERATURE

SENSOR

MOUNTING

LOCATION

ECONOMI$ER IV CONTROL MODES

IMPORTANT: The optional EconoMi$er2 does not

include a controller. The EconoMi$er2 is operated by a 4 to

20 mA signal from an existing field-supplied controller

(such as PremierLink™ control). See Fig. 27 for wiring

information.

SUPPLY AIR

TEMPERATURE

SENSOR

Determine the EconoMi$er IV control mode before set up of

the control. Some modes of operation may require different sen-

sors. Refer to Table 7. The EconoMi$er IV is supplied from the

factory with a supply air temperature sensor and an outdoor air

temperature sensor. This allows for operation of the

EconoMi$er IV with outdoor air dry bulb changeover control.

Additional accessories can be added to allow for different types

of changeover control and operation of the EconoMi$er IV and

unit.

Fig. 31 — Supply Air Sensor Location

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Differential Enthalpy Control — For differential enthalpy

control, the EconoMi$er IV controller uses two enthalpy sen-

sors (HH57AC078 and CRENTDIF004A00), one in the out-

side air and one in the return air duct. The EconoMi$er IV

controller compares the outdoor air enthalpy to the return air

enthalpy to determine EconoMi$er IV use. The controller

selects the lower enthalpy air (return or outdoor) for cooling.

For example, when the outdoor air has a lower enthalpy than

the return air, the EconoMi$er IV opens to bring in outdoor air

for free cooling.

Replace the standard outside air dry bulb temperature sen-

sor with the accessory enthalpy sensor in the same mounting

location. See Fig. 19. Mount the return air enthalpy sensor in

the return air duct. See Fig. 34. Wiring is provided in the

EconoMi$er IV wiring harness. See Fig. 26. The outdoor en-

thalpy changeover set point is set with the outdoor enthalpy set

point potentiometer on the EconoMi$er IV controller. When

using this mode of changeover control, turn the enthalpy set-

point potentiometer fully clockwise to the D setting.

Fig. 32 — EconoMi$er IV Controller Potentiometer

and LED Locations

Indoor Air Quality (IAQ) Sensor Input — The IAQ input

can be used for demand control ventilation control based on the

level of CO₂measured in the space or return air duct.

Mount the accessory IAQ sensor according to manufacturer

specifications. The IAQ sensor should be wired to the AQ and

AQ1 terminals of the controller. Adjust the DCV potentiome-

ters to correspond to the DCV voltage output of the indoor air

quality sensor at the user-determined set point. See Fig. 37.

If a separate field-supplied transformer is used to power the

IAQ sensor, the sensor must not be grounded or the

EconoMi$er IV control board will be damaged.

LED ON

LED OFF

LED ON

LED OFF

LED ON

LED OFF

ECONOMI$ER IV

CONTROLLER

LED OFF

85 90

100

55 60

70 75

40 45

ECONOMI$ER IV

DEGREES FAHRENHEIT

Fig. 33 — Outside Air Temperature

Changeover Set Points

GROMMET

Differential Dry Bulb Control — For differential dry bulb

control the standard outdoor dry bulb sensor is used in conjunc-

tion with an additional accessory dry bulb sensor (part number

CRTEMPSN002A00). The accessory sensor must be mounted

in the return airstream. See Fig. 34. Wiring is provided in the

EconoMi$er IV wiring harness. See Fig. 26.

RETURN AIR

SENSOR

In this mode of operation, the outdoor-air temperature is

compared to the return-air temperature and the lower tempera-

ture airstream is used for cooling. When using this mode of

changeover control, turn the enthalpy set point potentiometer

fully clockwise to the D setting. See Fig. 32.

RETURN DUCT

(FIELD-PROVIDED)

Fig. 34 — Return Air Temperature or Enthalpy

Sensor Mounting Location

Outdoor Enthalpy Changeover — For enthalpy control, ac-

cessory enthalpy sensor (part number HH57AC078) is re-

quired. Replace the standard outdoor dry bulb temperature sen-

sor with the accessory enthalpy sensor in the same mounting

location. See Fig. 19. When the outdoor air enthalpy rises

above the outdoor enthalpy changeover set point, the outdoor-

air damper moves to its minimum position. The outdoor

enthalpy changeover set point is set with the outdoor enthalpy

set point potentiometer on the EconoMi$er IV controller. The

set points are A, B, C, and D. See Fig. 35. The factory-installed

620-ohm jumper must be in place across terminals SR and SR+

on the EconoMi$er IV controller. See Fig. 19 and 36.

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95 100 105 110

(29) (32) (35) (38) (41) (43)

CONTROL CONTROL POINT

CURVE

APPROX. °F (°C)

AT 50% RH

(27)

73 (23)

70 (21)

67 (19)

63 (17)

(24)

(21)

(18)

(16)

(13)

(10)

(7)

(4)

(2)

HIGH LIMIT

CURVE

95 100 105 110

(2)

(4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)

APPROXIMATE DRY BULB TEMPERATURE— °F (°C)

Fig. 35 — Enthalpy Changeover Set Points

CO SENSOR MAX RANGE SETTING

TR1

EXH

Set

10V

6000

5000

4000

3000

2000

1000

EXH

Vac

HOT

24 Vac

COM

Min

Pos

800 ppm

900 ppm

1000 ppm

1100 ppm

Open

DCV

Max

10V

AQ1

SO+

SR+

DCV

Set

10V

Free

Cool

EF1

DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 37 — CO₂Sensor Maximum Range Setting

Fig. 36 — EconoMi$er IV Control

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Exhaust Set Point Adjustment — The exhaust set point will

determine when the exhaust fan runs based on damper position

(if accessory power exhaust is installed). The set point is modi-

fied with the Exhaust Fan Set Point (EXH SET) potentiometer.

See Fig. 32. The set point represents the damper position above

which the exhaust fans will be turned on. When there is a call

for exhaust, the EconoMi$er IV controller provides a 45 15

second delay before exhaust fan activation to allow the damp-

ers to open. This delay allows the damper to reach the appro-

priate position to avoid unnecessary fan overload.

Minimum Position Control — There is a minimum damper

position potentiometer on the EconoMi$er IV controller. See

Fig. 32. The minimum damper position maintains the mini-

mum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper po-

sition represents the minimum ventilation position for VOC

(volatile organic compound) ventilation requirements. The

maximum demand ventilation position is used for fully occu-

pied ventilation.

When demand ventilation control is not being used, the

minimum position potentiometer should be used to set the oc-

cupied ventilation position. The maximum demand ventilation

position should be turned fully clockwise.

Damper Movement — Damper movement from full open to

full closed (or vice versa) takes 2¹/₂minutes.

Thermostats — The EconoMi$er IV control works with con-

ventional thermostats that have a Y1 (cool stage 1), Y2 (cool

stage 2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The

EconoMi$er IV control does not support space temperature

sensors. Connections are made at the thermostat terminal con-

nection board located in the main control box.

Occupancy Control — The factory default configuration for

the EconoMi$er IV control is occupied mode. Occupied status

is provided by the black jumper from terminal TR to terminal

N. When unoccupied mode is desired, install a field-supplied

timeclock function in place of the jumper between TR and N.

See Fig. 26. When the timeclock contacts are closed, the

EconoMi$er IV control will be in occupied mode. When the

timeclock contacts are open (removing the 24-v signal from

terminal N), the EconoMi$er IV will be in unoccupied mode.

Demand Controlled Ventilation (DCV) — When using the

EconoMi$er IV for demand controlled ventilation, there are

some equipment selection criteria which should be considered.

When selecting the heat capacity and cool capacity of the

equipment, the maximum ventilation rate must be evaluated for

design conditions. The maximum damper position must be cal-

culated to provide the desired fresh air.

Typically the maximum ventilation rate will be about 5 to

10% more than the typical cfm required per person, using

normal outside air design criteria.

A proportional anticipatory strategy should be taken with

the following conditions: a zone with a large area, varied occu-

pancy, and equipment that cannot exceed the required ventila-

tion rate at design conditions. Exceeding the required ventila-

tion rate means the equipment can condition air at a maximum

ventilation rate that is greater than the required ventilation rate

for maximum occupancy. A proportional-anticipatory strategy

will cause the fresh air supplied to increase as the room CO₂

level increases even though the CO₂set point has not been

reached. By the time the CO₂level reaches the set point, the

damper will be at maximum ventilation and should maintain

the set point.

In order to have the CO₂sensor control the economizer

damper in this manner, first determine the damper voltage out-

put for minimum or base ventilation. Base ventilation is the

ventilation required to remove contaminants during unoccu-

pied periods. The following equation may be used to determine

the percent of outside-air entering the building for a given

damper position. For best results there should be at least a

10 degree difference in outside and return-air temperatures.

Adjust the minimum position potentiometer to allow the

minimum amount of outdoor air, as required by local codes, to

enter the building. Make minimum position adjustments with

at least 10 F temperature difference between the outdoor and

return-air temperatures.

To determine the minimum position setting, perform the

following procedure:

1. Calculate the appropriate mixed air temperature using the

following formula:

100

(T_Ox

) + (TR x

) = T_M

T_O= Outdoor-Air Temperature

OA = Percent of Outdoor Air

T_R= Return-Air Temperature

RA = Percent of Return Air

T_M= Mixed-Air Temperature

As an example, if local codes require 10% outdoor air

during occupied conditions, outdoor-air temperature is

60 F, and return-air temperature is 75 F.

(60 x .10) + (75 x .90) = 73.5 F

2. Disconnect the supply air sensor from terminals T and

T1.

3. Ensure that the factory-installed jumper is in place across

terminals P and P1. If remote damper positioning is being

used, make sure that the terminals are wired according to

Fig. 26 and that the minimum position potentiometer is

turned fully clockwise.

100

(T_Ox

) + (TR x

) = T_M

T_O= Outdoor-Air Temperature

OA = Percent of Outdoor Air

T_R= Return-Air Temperature

RA = Percent of Return Air

T_M= Mixed-Air Temperature

4. Connect 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position potentiometer

until the measured mixed-air temperature matches the

calculated value.

Once base ventilation has been determined, set the mini-

mum damper position potentiometer to the correct position.

6. Reconnect the supply air sensor to terminals T and T1.

Remote control of the EconoMi$er IV damper is desirable

The same equation can be used to determine the occupied or

maximum ventilation rate to the building. For example, an out-

put of 3.6 volts to the actuator provides a base ventilation rate

of 5% and an output of 6.7 volts provides the maximum venti-

lation rate of 20% (or base plus 15 cfm per person). Use Fig. 37

to determine the maximum setting of the CO₂sensor. For ex-

ample, a 1100 ppm set point relates to a 15 cfm per person de-

sign. Use the 1100 ppm curve on Fig. 37 to find the point when

the CO₂sensor output will be 6.7 volts. Line up the point on the

graph with the left side of the chart to determine that the range

configuration for the CO₂sensor should be 1800 ppm. The

EconoMi$er IV controller will output the 6.7 volts from the

when requiring additional temporary ventilation. If

field-supplied remote potentiometer (Honeywell part number

S963B1128) is wired to the EconoMi$er IV controller, the

minimum position of the damper can be controlled from a re-

mote location.

To control the minimum damper position remotely, remove

the factory-installed jumper on the P and P1 terminals on the

EconoMi$er IV controller. Wire the field-supplied potentiome-

ter to the P and P1 terminals on the EconoMi$er IV controller.

See Fig. 36.

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CO₂sensor to the actuator when the CO₂concentration in the

space is at 1100 ppm. The DCV set point may be left at 2 volts

since the CO₂sensor voltage will be ignored by the

EconoMi$er IV controller until it rises above the 3.6 volt set-

ting of the minimum position potentiometer.

Once the fully occupied damper position has been deter-

mined, set the maximum damper demand control ventilation

potentiometer to this position. Do not set to the maximum posi-

tion as this can result in over-ventilation to the space and poten-

tial high-humidity levels.

building when the enthalpy is high. In most cases, the normal

heating and cooling processes are more than adequate to re-

move the humidity loads for most commercial applications.

If normal rooftop heating and cooling operation is not ade-

quate for the outdoor humidity level, an energy recovery unit

and/or a dehumidification option should be considered.

Step 7 — Adjust Indoor-Fan Speed — Adjust the

indoor-fan speed to meet jobsite conditions.

For units with electric heat, required minimum cfm is 2250

for 50TFQ008, 2550 for 50TFQ009 and 3000 for 50TFQ012

with the following exceptions:

CO₂Sensor Configuration — The CO₂sensor has preset

standard voltage settings that can be selected anytime after the

sensor is powered up. See Table 8.

UNIT

CONFIG-

URATION

REQUIRED

MINIMUM

CFM

UNIT

VOLTAGE

HEATER

UNIT

Use setting 1 or 2 for Carrier equipment. See Table 8.

1. Press Clear and Mode buttons. Hold at least 5 seconds

until the sensor enters the Edit mode.

208/230

42.4

50.0

Horizontal

3200

Horizontal or

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to select the preset number. See

Table 8.

50TFQ012

460

575

50.0

3200

Vertical

17.0

51.0

2800

2350

Horizontal or

Vertical

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

Table 9 shows indoor-fan motor data. Table 10 shows fan

rpm at motor pulley settings for standard and alternate motors.

Tables 11A and 11B show static pressure for accessories. Refer

to Tables 12-27 to determine fan speed settings. Fan motor

pulleys are factory set for speed shown in Table 1.

To change fan speeds:

1. Shut off the unit power supply and tag disconnect.

The custom settings of the CO₂sensor can be changed any-

time after the sensor is energized. Follow the steps below to

change the non-standard settings:

1. Press Clear and Mode buttons. Hold at least 5 seconds

until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

2. Loosen the belt by loosening the fan motor mounting

nuts. See Fig. 38 and 39.

3. Loosen the movable pulley flange setscrew (see Fig. 40).

4. Screw the movable flange toward the fixed flange to

increase speed or away from the fixed flange to decrease

speed. Increasing the fan speed increases the load on the

motor. Do not exceed the maximum speed specified in

Table 1.

5. Set the movable flange at nearest keyway of the pulley

hub and tighten the setscrew. (See Table 1 for speed

change for each full turn of the pulley flange.)

3. Use the Up/Down button to toggle to the NONSTD menu

and press Enter.

4. Use the Up/Down button to toggle through each of the

nine variables, starting with Altitude, until the desired set-

ting is reached.

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode to

continue to the next variable.

Dehumidification of Fresh Air with DCV Control — Infor-

mation from ASHRAE indicates that the largest humidity load

on any zone is the fresh air introduced. For some applications,

a device such as a 62AQ energy recovery unit is added to re-

duce the moisture content of the fresh air being brought into the

Table 8 — CO₂Sensor Standard Settings

VENTILATION

RATE

(cfm/Person)

CO₂

CONTROL RANGE

(ppm)

OPTIONAL

RELAY SETPOINT

(ppm)

RELAY

HYSTERESIS

(ppm)

ANALOG

OUTPUT

SETTING

EQUIPMENT

OUTPUT

0-10V

Proportional

Exponential

Proportional

Exponential

Proportional

Any

0-2000

0-1100

0- 900

0-1100

0- 900

0-9999

0-2000

1000

1100

900

4-20 mA

Interface w/Standard

2-10V

7-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

Building Control System

Economizer

1100

900

Health & Safety

—

5000

700

500

Parking/Air Intakes/

Loading Docks

—

LEGEND

ppm — Parts Per Million

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To align the fan and motor pulleys:

1. Loosen the fan pulley setscrews.

2. Slide the fan pulley along the fan shaft.

3. Make angular alignment by loosening the motor from the

mounting plate.

To adjust belt tension:

1. Loosen the fan motor mounting nuts.

2. Sizes 008 and 009 — Slide the motor mounting plate

away from the fan scroll for proper belt tension (¹/₂-in.

deflection with 5 to 10 lb of force) and tighten the mount-

ing nuts (see Fig. 38).

Size 012 — Slide the motor mounting plate downward to

tighten belt tension (¹/₂-in. deflection with 5 to 10 lb of

force). Secure the motor mounting plate nuts. See Fig. 39.

3. Adjust the bolt and nut on the mounting plate to secure

the motor in fixed position.

Fig. 39 — Typical Belt-Drive Motor Mounting for

Size 012

MOTOR MOUNTING

PLATE NUTS

Fig. 38 — Typical Belt-Drive Motor Mounting for

Size 008 and 009

Fig. 40 — Indoor-Fan Pulley Adjustment

Table 9 — Fan Motor Performance

UNIT

50TFQ

INDOOR-FAN

MOTOR

UNIT

VOLTAGE

MAXIMUM ACCEPTABLE

CONTINUOUS BHP*

MAXIMUM ACCEPTABLE

OPERATING WATTS

MAXIMUM

AMP DRAW

208/230

460

575

208/230

460

575

6.0

3.0

11.7

5.5

6.0

3.0

11.7

5.5

6.0

3.0

8.6

3.9

17.3

8.5

Standard,

Alternate

2.40

3.70

2.40

3.70

2.40

2.90

5.25

2120

3313

2120

3313

2120

2615

4400

008

009

High Static

Standard

High Static

Standard

Alternate

208/230

460

575

208/230

460

575

208/230

460

575

208/230

460

575

012

208/230

460

575

High Static

LEGEND

BHP — Brake Horsepower

*Extensive motor and electrical testing on these units ensures that the full horsepower range of the

motors can be utilized with confidence. Using fan motors up to the horsepower ratings shown in

this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be

affected.

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Table 10 — Fan Rpm at Motor Pulley Settings*

MOTOR PULLEY TURNS OPEN

UNIT

1¹/₂

765

860

988

860

988

860

1010

1062

2¹/₂

715

810

952

810

952

810

960

1012

3¹/₂

665

760

915

760

915

760

910

962

4¹/₂

615

710

878

710

878

710

860

912

5¹/₂

—

862

50TFQ

840

935

1080

935

1080

935

1085

1130

790

885

1007

885

1007

885

1035

1087

008†

815

910

1025

910

1025

910

1060

1112

740

835

970

835

970

835

985

1037

690

785

933

785

933

785

935

987

635

735

897

735

897

735

885

937

590

685

860

685

860

685

835

887

—

830

008**

008††

009†

009††

012†

012**

012††

*Approximate fan rpm shown.

†Indicates standard motor and drive package.

**Indicates alternate drive package only.

††Indicates high-static motor and drive package.

Table 11A — Electric Heater Static Pressure* (in. wg) — 50TFQ008-012

CFM

COMPONENT

2250

0.02

0.03

2500

0.03

0.05

3000

0.05

0.07

3500

0.07

0.09

4000

0.08

0.12

4500

0.10

0.14

5000

0.12

0.16

5500

0.14

0.19

6000

0.16

0.21

6250

0.17

0.20

1 Heater Module

2 Heater Modules

*The static pressure must be added to external static pressure. The sum and the evaporator

entering-air cfm should then be used in conjunction with the Fan Performance tables to deter-

mine blower rpm and watts.

Table 11B — EconoMi$er IV and EconoMi$er2 Static Pressure* (in. wg) — 50TFQ008-012

CFM

COMPONENT

2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 4750 5000 5250 6250

Vertical EconoMi$er IV and EconoMi$er2

Horizontal EconoMi$er IV and EconoMi$er2

0.06 0.075 0.09 0.115 0.13 0.15 0.17 0.195 0.22 0.25 0.285 0.325 0.36

0.1 0.125 0.15 0.18 0.21 0.25 0.275 0.3 0.34 0.388

—

*The static pressure must be added to external static pressure. The sum and the outdoor

entering-air cfm should then be used in conjunction with the Fan Performance tables to

determine blower rpm and watts.

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Table 12 — Fan Performance, 50TFQ008 — Vertical Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

511

519

534

550

557

565

581

597

613

629

646

662

679

695

712

729

746

754

0.58

0.61

0.68

0.75

0.79

0.83

0.91

1.00

1.09

1.20

1.30

1.42

1.54

1.67

1.81

1.95

2.10

2.18

538

567

591

597

611

624

631

638

652

667

681

696

711

726

741

756

772

787

803

—

0.75

0.78

0.86

0.93

0.98

1.02

1.11

1.21

1.31

1.42

1.53

1.65

1.78

1.92

2.06

2.21

2.37

—

697

729

660

666

678

690

697

703

716

729

743

756

770

784

798

812

827

—

0.93

0.97

1.04

1.13

1.17

1.22

1.32

1.42

1.53

1.64

1.76

1.89

2.03

2.17

2.32

—

864

900

722

727

739

750

756

762

774

786

799

812

825

838

851

—

1.12

1.16

1.24

1.33

1.38

1.43

1.53

1.64

1.75

1.88

2.00

2.14

2.28

—

1041

1079

1158

1243

1287

1333

1428

1529

1636

1749

1869

1994

2126

—

779

784

794

805

811

816

828

839

851

863

875

888

—

1.32

1.36

1.45

1.55

1.60

1.65

1.75

1.87

1.99

2.12

2.25

2.39

—

1228

1268

1352

1441

1488

1536

1636

1742

1855

1973

2098

2229

—

630

798

974

698

872

1053

1095

1138

1228

1323

1425

1532

1645

1765

1892

2025

2165

—

733

910

770

950

848

1034

1124

1220

1321

1428

1542

1663

1790

1923

2065

2213

—

932

1020

1115

1217

1324

1438

1558

1686

1820

1962

2036

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

831

836

846

856

862

867

878

889

900

912

—

1.53

1.57

1.67

1.77

1.82

1.87

1.99

2.11

2.23

2.36

—

1423

1465

1554

1647

1697

1747

1852

1963

2080

2204

—

880

885

895

905

910

915

925

936

—

1.74

1.79

1.89

2.00

2.05

2.11

2.23

2.35

—

1627

1671

1764

1862

1913

1966

2076

2192

—

927

931

941

950

955

960

—

1.97

2.02

2.13

2.24

2.29

2.35

—

1840

1886

1982

2085

2138

2193

—

971

975

984

—

2.21

2.26

2.37

—

2061

2109

2209

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 590 to 840 rpm. All other rpms require field-

supplied drive.

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Table 13 — Fan Performance, 50TFQ008 — Vertical Discharge Units; Alternate Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

511

519

534

550

557

565

581

597

613

629

646

662

679

695

712

729

746

754

0.58

0.61

0.68

0.75

0.79

0.83

0.91

1.00

1.09

1.20

1.30

1.42

1.54

1.67

1.81

1.95

2.10

2.18

538

567

591

597

611

624

631

638

652

667

681

696

711

726

741

756

772

787

803

—

0.75

0.78

0.86

0.93

0.98

1.02

1.11

1.21

1.31

1.42

1.53

1.65

1.78

1.92

2.06

2.21

2.37

—

697

729

660

666

678

690

697

703

716

729

743

756

770

784

798

812

827

—

0.93

0.97

1.04

1.13

1.17

1.22

1.32

1.42

1.53

1.64

1.76

1.89

2.03

2.17

2.32

—

864

900

722

727

739

750

756

762

774

786

799

812

825

838

851

—

1.12

1.16

1.24

1.33

1.38

1.43

1.53

1.64

1.75

1.88

2.00

2.14

2.28

—

1041

1079

1158

1243

1287

1333

1428

1529

1636

1749

1869

1994

2126

—

779

784

794

805

811

816

828

839

851

863

875

888

—

1.32

1.36

1.45

1.55

1.60

1.65

1.75

1.87

1.99

2.12

2.25

2.39

—

1228

1268

1352

1441

1488

1536

1636

1742

1855

1973

2098

2229

—

630

798

974

698

872

1053

1095

1138

1228

1323

1425

1532

1645

1765

1892

2025

2165

—

733

910

770

950

848

1034

1124

1220

1321

1428

1542

1663

1790

1923

2065

2213

—

932

1020

1115

1217

1324

1438

1558

1686

1820

1962

2036

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

831

836

846

856

862

867

878

889

900

912

—

1.53

1.57

1.67

1.77

1.82

1.87

1.99

2.11

2.23

2.36

—

1423

1465

1554

1647

1697

1747

1852

1963

2080

2204

—

880

885

895

905

910

915

925

936

—

1.74

1.79

1.89

2.00

2.05

2.11

2.23

2.35

—

1627

1671

1764

1862

1913

1966

2076

2192

—

927

931

941

950

955

960

—

1.97

2.02

2.13

2.24

2.29

2.35

—

1840

1886

1982

2085

2138

2193

—

971

975

984

—

2.21

2.26

2.37

—

2061

2109

2209

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

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Table 14 — Fan Performance, 50TFQ008 — Vertical Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

511

519

534

550

557

565

581

597

613

629

646

662

679

695

712

729

746

754

0.58

0.61

0.68

0.75

0.79

0.83

0.91

1.00

1.09

1.20

1.30

1.42

1.54

1.67

1.81

1.95

2.10

2.18

538

567

591

597

611

624

631

638

652

667

681

696

711

726

741

756

772

787

803

811

0.75

0.78

0.86

0.93

0.98

1.02

1.11

1.21

1.31

1.42

1.53

1.65

1.78

1.92

2.06

2.21

2.37

2.46

697

729

660

666

678

690

697

703

716

729

743

756

770

784

798

812

827

841

856

864

0.93

0.97

1.04

1.13

1.17

1.22

1.32

1.42

1.53

1.64

1.76

1.89

2.03

2.17

2.32

2.48

2.65

2.73

864

900

722

727

739

750

756

762

774

786

799

812

825

838

851

865

878

892

906

913

1.12

1.16

1.24

1.33

1.38

1.43

1.53

1.64

1.75

1.88

2.00

2.14

2.28

2.43

2.59

2.75

2.92

3.01

1041

1079

1158

1243

1287

1333

1428

1529

1636

1749

1869

1994

2126

2266

2412

2565

2726

2809

779

784

794

805

811

816

828

839

851

863

875

888

901

913

926

940

953

960

1.32

1.36

1.45

1.55

1.60

1.65

1.75

1.87

1.99

2.12

2.25

2.39

2.54

2.69

2.86

3.03

3.21

3.30

1228

1268

1352

1441

1488

1536

1636

1742

1855

1973

2098

2229

2367

2512

2664

2823

2990

3076

630

798

974

698

872

1053

1095

1138

1228

1323

1425

1532

1645

1765

1892

2025

2165

2312

2467

2548

733

910

770

950

848

1034

1124

1220

1321

1428

1542

1663

1790

1923

2065

2213

2290

932

1020

1115

1217

1324

1438

1558

1686

1820

1962

2036

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

831

836

846

856

862

867

878

889

900

912

923

935

947

960

972

985

997

1004

1.53

1.57

1.67

1.77

1.82

1.87

1.99

2.11

2.23

2.36

2.50

2.65

2.80

2.96

3.13

3.31

3.49

3.59

1423

1465

1554

1647

1697

1747

1852

1963

2080

2204

2334

2471

2613

880

885

895

905

910

915

925

936

946

957

969

980

992

1.74

1.79

1.89

2.00

2.05

2.11

2.23

2.35

2.48

2.62

2.76

2.92

3.07

3.24

3.42

3.60

—

1627

1671

1764

1862

1913

1966

2076

2192

2314

2442

2577

2718

2867

3022

3185

3355

—

927

931

941

950

955

960

970

980

990

1001

1012

1023

1034

1045

1057

—

1.97

2.02

2.13

2.24

2.29

2.35

2.47

2.60

2.74

2.88

3.03

3.19

3.35

3.52

3.70

—

1840

1886

1982

2085

2138

2193

2307

2427

2554

2687

2826

2973

3126

3286

3454

—

971

975

984

993

998

1003

1012

1022

1032

1043

1053

1064

1074

—

2.21

2.26

2.37

2.48

2.54

2.60

2.73

2.86

3.00

3.15

3.31

3.47

3.64

—

2061

2109

2209

2315

2370

2427

2545

2670

2800

2938

3082

3233

3391

—

1013

1017

1026

1035

1039

1044

1053

1063

1072

1082

1093

—

2.46

2.51

2.62

2.74

2.80

2.86

2.99

3.13

3.28

3.43

3.59

—

2289

2340

2443

2553

2611

2669

2791

2920

3055

3196

3345

—

2764 1003

2921 1015

3086 1028

3259

3347

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 3.70.

*Motor drive range: 860 to 1080 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 15 — Fan Performance, 50TFQ009 — Vertical Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

557

565

581

597

613

629

646

662

679

695

712

729

746

754

763

—

0.79

0.83

0.91

1.00

1.09

1.20

1.30

1.42

1.54

1.67

1.81

1.95

2.10

2.18

2.26

—

733

770

848

932

1020

1115

1217

1324

1438

1558

1686

1820

1962

2036

2112

—

631

638

652

667

681

696

711

726

741

756

772

787

803

—

0.98

1.02

1.11

1.21

1.31

1.42

1.53

1.65

1.78

1.92

2.06

2.21

2.37

—

910

950

1034

1124

1220

1321

1428

1542

1663

1790

1923

2065

2213

—

697

703

716

729

743

756

770

784

798

812

827

—

1.17

1.22

1.32

1.42

1.53

1.64

1.76

1.89

2.03

2.17

2.32

—

1095

1138

1228

1323

1425

1532

1645

1765

1892

2025

2165

—

756

762

774

786

799

812

825

838

851

—

1.38

1.43

1.53

1.64

1.75

1.88

2.00

2.14

2.28

—

1287

1333

1428

1529

1636

1749

1869

1994

2126

—

811

816

828

839

851

863

875

888

—

1.60

1.65

1.75

1.87

1.99

2.12

2.25

2.39

—

1488

1536

1636

1742

1855

1973

2098

2229

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

862

867

878

889

900

912

—

1.82

1.87

1.99

2.11

2.23

2.36

—

1697

1747

1852

1963

2080

2204

—

910

915

925

936

—

2.05

2.11

2.23

2.35

—

1913

1966

2076

2192

—

955

960

—

2.29

2.35

—

2138

2193

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 16 — Fan Performance, 50TFQ009 — Vertical Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

557

565

581

597

613

629

646

662

679

695

712

729

746

754

763

780

797

814

831

840

0.79

0.83

0.91

1.00

1.09

1.20

1.30

1.42

1.54

1.67

1.81

1.95

2.10

2.18

2.26

2.43

2.61

2.80

2.99

3.09

733

770

631

638

652

667

681

696

711

726

741

756

772

787

803

811

819

835

851

867

883

891

0.98

1.02

1.11

1.21

1.31

1.42

1.53

1.65

1.78

1.92

2.06

2.21

2.37

2.46

2.54

2.72

2.90

3.09

3.29

3.40

910

950

697

703

716

729

743

756

770

784

798

812

827

841

856

864

871

886

901

916

932

—

1.17

1.22

1.32

1.42

1.53

1.64

1.76

1.89

2.03

2.17

2.32

2.48

2.65

2.73

2.82

3.00

3.19

3.39

3.60

—

1095

1138

1228

1323

1425

1532

1645

1765

1892

2025

2165

2312

2467

2548

2630

2800

2978

3164

3358

—

756

762

774

786

799

812

825

838

851

865

878

892

906

913

920

934

949

963

—

1.38

1.43

1.53

1.64

1.75

1.88

2.00

2.14

2.28

2.43

2.59

2.75

2.92

3.01

3.10

3.29

3.49

3.70

—

1287

1333

1428

1529

1636

1749

1869

1994

2126

2266

2412

2565

2726

2809

2895

3070

3255

3447

—

811

816

828

839

851

863

875

888

901

913

926

940

953

960

966

980

—

1.60

1.65

1.75

1.87

1.99

2.12

2.25

2.39

2.54

2.69

2.86

3.03

3.21

3.30

3.39

3.59

—

1488

1536

1636

1742

1855

1973

2098

2229

2367

2512

2664

2823

2990

3076

3164

3346

—

848

1034

1124

1220

1321

1428

1542

1663

1790

1923

2065

2213

2290

2369

2533

2705

2884

3072

3170

932

1020

1115

1217

1324

1438

1558

1686

1820

1962

2036

2112

2269

2434

2607

2788

2883

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

862

867

878

889

900

912

923

935

947

960

972

985

997

1004

1010

—

1.82

1.87

1.99

2.11

2.23

2.36

2.50

2.65

2.80

2.96

3.13

3.31

3.49

3.59

3.69

—

1697

1747

1852

1963

2080

2204

2334

2471

2613

910

915

925

936

946

957

969

980

992

2.05

2.11

2.23

2.35

2.48

2.62

2.76

2.92

3.07

3.24

3.42

3.60

—

1913

1966

2076

2192

2314

2442

2577

2718

2867

3022

3185

3355

—

955

960

970

980

990

1001

1012

1023

1034

1045

1057

—

2.29

2.35

2.47

2.60

2.74

2.88

3.03

3.19

3.35

3.52

3.70

—

2138

2193

2307

2427

2554

2687

2826

2973

3126

3286

3454

—

998

1003

1012

1022

1032

1043

1053

1064

1074

—

2.54

2.60

2.73

2.86

3.00

3.15

3.31

3.47

3.64

—

2370

2427

2545

2670

2800

2938

3082

3233

3391

—

1039

1044

1053

1063

1072

1082

1093

—

2.80

2.86

2.99

3.13

3.28

3.43

3.59

—

2611

2669

2791

2920

3055

3196

3345

—

2764 1003

2921 1015

3086 1028

—

3259

3347

3438

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 3.70.

*Motor drive range: 860 to 1080 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 17 — Fan Performance, 50TFQ012 — Vertical Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

556

569

583

597

611

625

639

654

668

683

697

712

726

741

755

770

785

800

815

829

—

0.65

0.70

0.76

0.83

0.89

0.96

1.04

1.11

1.20

1.28

1.37

1.47

1.57

1.67

1.78

1.89

2.01

2.14

2.26

2.40

—

604

656

623

636

648

661

674

687

700

713

726

739

753

766

780

794

807

821

835

849

—

0.80

0.86

0.93

1.00

1.07

1.14

1.22

1.31

1.39

1.48

1.58

1.68

1.79

1.89

2.01

2.13

2.25

2.38

—

748

805

684

695

707

718

730

742

754

767

779

792

804

817

830

843

856

869

—

0.95

1.02

1.09

1.17

1.24

1.32

1.41

1.50

1.59

1.69

1.79

1.89

2.00

2.12

2.23

2.36

—

891

953

738

749

760

771

782

794

805

817

828

840

852

864

876

889

—

1.11

1.18

1.26

1.33

1.42

1.50

1.59

1.69

1.78

1.88

1.99

2.10

2.22

2.34

—

1034

1100

1170

1244

1320

1400

1484

1571

1662

1758

1857

1960

2067

2179

—

789

799

809

820

831

841

852

863

874

886

897

909

—

1.26

1.34

1.42

1.50

1.59

1.68

1.78

1.87

1.98

2.08

2.20

2.31

—

1177

1249

1323

1401

1483

1567

1656

1748

1844

1943

2048

2155

—

712

865

1018

1086

1158

1233

1312

1395

1481

1572

1666

1764

1866

1973

2084

2200

—

770

929

996

832

898

1066

1140

1218

1299

1385

1474

1567

1665

1767

1873

1984

2099

2219

—

967

1040

1116

1197

1281

1370

1462

1559

1660

1766

1876

1991

2111

2235

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

836

846

856

866

876

886

897

907

918

929

940

—

1.42

1.50

1.58

1.67

1.76

1.86

1.96

2.06

2.17

2.28

2.40

—

1322

1398

1477

1559

1645

1734

1827

1924

2025

2130

2238

—

881

890

899

909

919

929

939

949

959

—

1.57

1.66

1.75

1.84

1.94

2.04

2.14

2.25

2.37

—

1467

1547

1631

1718

1808

1902

2000

2101

2207

—

923

932

941

950

960

969

979

—

1.73

1.82

1.92

2.01

2.12

2.22

2.33

—

1613

1698

1786

1878

1972

2071

2173

—

963

972

980

989

998

1008

—

1.89

1.98

2.08

2.19

2.29

2.40

—

1761

1849

1942

2038

2137

2240

—

1001

1010

1018

1027

—

2.05

2.15

2.25

2.36

—

1909

2002

2099

2199

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 18 — Fan Performance, 50TFQ012 — Vertical Discharge Units; Alternate Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

556

569

583

597

611

625

639

654

668

683

697

712

726

741

755

770

785

800

815

829

844

0.65

0.70

0.76

0.83

0.89

0.96

1.04

1.11

1.20

1.28

1.37

1.47

1.57

1.67

1.78

1.89

2.01

2.14

2.26

2.40

2.54

604

656

623

636

648

661

674

687

700

713

726

739

753

766

780

794

807

821

835

849

863

877

891

0.80

0.86

0.93

1.00

1.07

1.14

1.22

1.31

1.39

1.48

1.58

1.68

1.79

1.89

2.01

2.13

2.25

2.38

2.51

2.65

2.80

748

805

684

695

707

718

730

742

754

767

779

792

804

817

830

843

856

869

882

895

909

—

0.95

1.02

1.09

1.17

1.24

1.32

1.41

1.50

1.59

1.69

1.79

1.89

2.00

2.12

2.23

2.36

2.49

2.62

2.76

—

891

953

738

749

760

771

782

794

805

817

828

840

852

864

876

889

901

914

926

939

—

1.11

1.18

1.26

1.33

1.42

1.50

1.59

1.69

1.78

1.88

1.99

2.10

2.22

2.34

2.46

2.59

2.72

2.86

—

1034

1100

1170

1244

1320

1400

1484

1571

1662

1758

1857

1960

2067

2179

2295

2415

2541

2670

—

789

799

809

820

831

841

852

863

874

886

897

909

920

932

944

956

—

1.26

1.34

1.42

1.50

1.59

1.68

1.78

1.87

1.98

2.08

2.20

2.31

2.43

2.56

2.69

2.82

—

1177

1249

1323

1401

1483

1567

1656

1748

1844

1943

2048

2155

2268

2384

2505

2630

—

712

865

1018

1086

1158

1233

1312

1395

1481

1572

1666

1764

1866

1973

2084

2200

2320

2445

2575

—

770

929

996

832

898

1066

1140

1218

1299

1385

1474

1567

1665

1767

1873

1984

2099

2219

2344

2473

2608

967

1040

1116

1197

1281

1370

1462

1559

1660

1766

1876

1991

2111

2235

2365

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

836

846

856

866

876

886

897

907

918

929

940

951

962

973

—

1.42

1.50

1.58

1.67

1.76

1.86

1.96

2.06

2.17

2.28

2.40

2.52

2.65

2.78

—

1322

1398

1477

1559

1645

1734

1827

1924

2025

2130

2238

2351

881

890

899

909

919

929

939

949

959

970

980

991

1.57

1.66

1.75

1.84

1.94

2.04

2.14

2.25

2.37

2.48

2.61

2.73

2.86

—

1467

1547

1631

1718

1808

1902

2000

2101

2207

2316

2429

2547

2668

—

923

932

941

950

960

969

979

989

999

1009

1019

—

1.73

1.82

1.92

2.01

2.12

2.22

2.33

2.44

2.56

2.68

2.81

—

1613

1698

1786

1878

1972

2071

2173

2279

2389

2502

2620

—

963

972

980

989

998

1008

1017

1027

1036

1046

—

1.89

1.98

2.08

2.19

2.29

2.40

2.52

2.63

2.76

2.88

—

1761

1849

1942

2038

2137

2240

2347

2457

2571

2690

—

1001

1010

1018

1027

1036

1045

1054

1063

—

2.05

2.15

2.25

2.36

2.47

2.58

2.70

2.83

—

1909

2002

2099

2199

2303

2410

2521

2636

—

2468 1002

—

2589

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

*Motor drive range: 835 to 1085 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 19 — Fan Performance, 50TFQ012 — Vertical Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

556

569

583

597

611

625

639

654

668

683

697

712

726

741

755

770

785

800

815

829

844

0.65

0.70

0.76

0.83

0.89

0.96

1.04

1.11

1.20

1.28

1.37

1.47

1.57

1.67

1.78

1.89

2.01

2.14

2.26

2.40

2.54

604

656

623

636

648

661

674

687

700

713

726

739

753

766

780

794

807

821

835

849

863

877

891

0.80

0.86

0.93

1.00

1.07

1.14

1.22

1.31

1.39

1.48

1.58

1.68

1.79

1.89

2.01

2.13

2.25

2.38

2.51

2.65

2.80

748

805

684

695

707

718

730

742

754

767

779

792

804

817

830

843

856

869

882

895

909

922

936

0.95

1.02

1.09

1.17

1.24

1.32

1.41

1.50

1.59

1.69

1.79

1.89

2.00

2.12

2.23

2.36

2.49

2.62

2.76

2.91

3.06

891

953

738

749

760

771

782

794

805

817

828

840

852

864

876

889

901

914

926

939

952

965

978

1.11

1.18

1.26

1.33

1.42

1.50

1.59

1.69

1.78

1.88

1.99

2.10

2.22

2.34

2.46

2.59

2.72

2.86

3.01

3.16

3.31

1034

1100

1170

1244

1320

1400

1484

1571

1662

1758

1857

1960

2067

2179

2295

2415

2541

2670

2805

2944

3089

789

799

809

820

831

841

852

863

874

886

897

909

920

932

944

956

968

980

993

1005

1018

1.26

1.34

1.42

1.50

1.59

1.68

1.78

1.87

1.98

2.08

2.20

2.31

2.43

2.56

2.69

2.82

2.96

3.10

3.25

3.41

3.57

1177

1249

1323

1401

1483

1567

1656

1748

1844

1943

2048

2155

2268

2384

2505

2630

2760

2895

3034

3178

3328

712

865

1018

1086

1158

1233

1312

1395

1481

1572

1666

1764

1866

1973

2084

2200

2320

2445

2575

2709

2849

770

929

996

832

898

1066

1140

1218

1299

1385

1474

1567

1665

1767

1873

1984

2099

2219

2344

2473

2608

967

1040

1116

1197

1281

1370

1462

1559

1660

1766

1876

1991

2111

2235

2365

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

836

846

856

866

876

886

897

907

918

929

940

951

962

973

985

996

1008

1020

1032

1044

1056

1.42

1.50

1.58

1.67

1.76

1.86

1.96

2.06

2.17

2.28

2.40

2.52

2.65

2.78

2.91

3.05

3.20

3.34

3.50

3.66

3.82

1322

1398

1477

1559

1645

1734

1827

1924

2025

2130

2238

2351

2468 1002

2589 1013

2715 1024

2845 1035

2979 1046

3119 1058

3263 1069

3413 1081

3566 1093

881

890

899

909

919

929

939

949

959

970

980

991

1.57

1.66

1.75

1.84

1.94

2.04

2.14

2.25

2.37

2.48

2.61

2.73

2.86

3.00

3.14

3.28

3.43

3.58

3.74

3.91

4.08

1467

1547

1631

1718

1808

1902

2000

2101

2207

2316

2429

2547

2668

2794

2924

3059

3199

3343

3492

3646

3805

923

932

1.73

1.82

1.92

2.01

2.12

2.22

2.33

2.44

2.56

2.68

2.81

2.94

3.08

3.22

3.36

3.51

3.67

3.83

3.99

4.16

4.34

1613

1698

1786

1878

1972

2071

2173

2279

2389

2502

2620

2743

2869

2999

3134

3274

3418

3567

3721

3880

4044

963

972

1.89

1.98

2.08

2.19

2.29

2.40

2.52

2.63

2.76

2.88

3.02

3.15

3.29

3.44

3.59

3.74

3.90

4.07

4.24

4.41

4.59

1761

1849

1942

2038

2137

2240

2347

2457

2571

2690

2812

2939

3070

3205

3345

3489

3638

3792

3950

4113

4282

1001

1010

1018

1027

1036

1045

1054

1063

1073

1082

1092

1102

1112

1122

1132

1142

1152

1163

1174

1184

1195

2.05

2.15

2.25

2.36

2.47

2.58

2.70

2.83

2.95

3.09

3.22

3.36

3.51

3.66

3.81

3.97

4.14

4.31

4.48

4.66

4.85

1909

2002

2099

2199

2303

2410

2521

2636

2755

2877

3004

3136

3271

3411

3555

3704

3857

4016

4179

4347

4520

941

980

950

989

998

960

969

1008

1017

1027

1036

1046

1056

1066

1076

1087

1097

1108

1118

1129

1140

1151

1162

979

989

999

1009

1019

1029

1040

1050

1061

1072

1083

1094

1105

1117

1128

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 5.25.

*Motor drive range: 830 to 1130 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 20 — Fan Performance, 50TFQ008 — Horizontal Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

465

471

483

495

501

507

519

532

544

557

570

582

595

608

622

635

648

655

0.49

0.52

0.57

0.63

0.66

0.69

0.76

0.83

0.91

0.99

1.07

1.17

1.26

1.36

1.47

1.58

1.70

1.77

459

483

555

560

570

581

586

592

603

614

625

637

648

660

671

683

695

707

720

726

0.67

0.69

0.76

0.82

0.86

0.89

0.97

1.05

1.13

1.22

1.31

1.41

1.52

1.63

1.74

1.86

1.99

2.06

621

648

629

634

644

653

658

663

674

684

694

705

716

727

738

749

760

771

783

788

0.84

0.88

0.94

1.02

1.05

1.09

1.18

1.26

1.35

1.45

1.55

1.66

1.77

1.89

2.01

2.14

2.27

2.34

786

817

694

698

708

717

722

727

736

746

756

766

776

786

797

807

818

—

1.03

1.06

1.14

1.22

1.26

1.30

1.39

1.48

1.58

1.68

1.79

1.90

2.02

2.15

2.28

—

959

992

752

757

765

774

779

784

793

802

812

821

831

841

851

—

1.22

1.26

1.34

1.42

1.47

1.51

1.61

1.71

1.81

1.92

2.03

2.15

2.28

—

1138

1174

1248

1327

1368

1410

1498

1590

1687

1789

1896

2008

2125

—

534

705

880

1061

1134

1173

1212

1294

1381

1472

1568

1669

1774

1885

2002

2124

—

588

767

948

983

617

799

647

832

1020

1096

1176

1261

1351

1445

1545

1649

1759

1874

1995

2121

2187

709

902

775

976

846

1054

1137

1224

1317

1414

1517

1625

1738

1857

1918

922

1002

1087

1177

1271

1372

1477

1588

1646

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

806

810

818

827

832

836

845

854

863

872

882

—

1.42

1.46

1.55

1.64

1.68

1.73

1.83

1.94

2.05

2.16

2.28

—

1326

1363

1443

1527

1570

1615

1708

1805

1907

2015

2127

—

855

859

868

876

880

885

893

902

911

—

1.63

1.67

1.76

1.86

1.91

1.96

2.06

2.17

2.29

—

1521

1561

1644

1733

1779

1826

1923

2026

2134

—

902

906

914

922

926

931

939

—

1.85

1.89

1.99

2.09

2.14

2.19

2.30

—

1723

1765

1853

1946

1994

2043

2146

—

946

950

958

966

970

—

2.07

2.12

2.22

2.32

2.38

—

1932

1976

2068

2165

2215

—

988

991

—

2.30

2.35

—

2148

2194

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 590 to 840 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 21 — Fan Performance, 50TFQ008 — Horizontal Discharge Units; Alternate Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

465

471

483

495

501

507

519

532

544

557

570

582

595

608

622

635

648

655

0.49

0.52

0.57

0.63

0.66

0.69

0.76

0.83

0.91

0.99

1.07

1.17

1.26

1.36

1.47

1.58

1.70

1.77

459

483

555

560

570

581

586

592

603

614

625

637

648

660

671

683

695

707

720

726

0.67

0.69

0.76

0.82

0.86

0.89

0.97

1.05

1.13

1.22

1.31

1.41

1.52

1.63

1.74

1.86

1.99

2.06

621

648

629

634

644

653

658

663

674

684

694

705

716

727

738

749

760

771

783

788

0.84

0.88

0.94

1.02

1.05

1.09

1.18

1.26

1.35

1.45

1.55

1.66

1.77

1.89

2.01

2.14

2.27

2.34

786

817

694

698

708

717

722

727

736

746

756

766

776

786

797

807

818

—

1.03

1.06

1.14

1.22

1.26

1.30

1.39

1.48

1.58

1.68

1.79

1.90

2.02

2.15

2.28

—

959

992

752

757

765

774

779

784

793

802

812

821

831

841

851

—

1.22

1.26

1.34

1.42

1.47

1.51

1.61

1.71

1.81

1.92

2.03

2.15

2.28

—

1138

1174

1248

1327

1368

1410

1498

1590

1687

1789

1896

2008

2125

—

534

705

880

1061

1134

1173

1212

1294

1381

1472

1568

1669

1774

1885

2002

2124

—

588

767

948

983

617

799

647

832

1020

1096

1176

1261

1351

1445

1545

1649

1759

1874

1995

2121

2187

709

902

775

976

846

1054

1137

1224

1317

1414

1517

1625

1738

1857

1918

922

1002

1087

1177

1271

1372

1477

1588

1646

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

806

810

818

827

832

836

845

854

863

872

882

—

1.42

1.46

1.55

1.64

1.68

1.73

1.83

1.94

2.05

2.16

2.28

—

1326

1363

1443

1527

1570

1615

1708

1805

1907

2015

2127

—

855

859

868

876

880

885

893

902

911

—

1.63

1.67

1.76

1.86

1.91

1.96

2.06

2.17

2.29

—

1521

1561

1644

1733

1779

1826

1923

2026

2134

—

902

906

914

922

926

931

939

—

1.85

1.89

1.99

2.09

2.14

2.19

2.30

—

1723

1765

1853

1946

1994

2043

2146

—

946

950

958

966

970

—

2.07

2.12

2.22

2.32

2.38

—

1932

1976

2068

2165

2215

—

988

991

—

2.30

2.35

—

2148

2194

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 22 — Fan Performance, 50TFQ008 — Horizontal Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

465

471

483

495

501

507

519

532

544

557

570

582

595

608

622

635

648

655

0.49

0.52

0.57

0.63

0.66

0.69

0.76

0.83

0.91

0.99

1.07

1.17

1.26

1.36

1.47

1.58

1.70

1.77

459

483

555

560

570

581

586

592

603

614

625

637

648

660

671

683

695

707

720

726

0.67

0.69

0.76

0.82

0.86

0.89

0.97

1.05

1.13

1.22

1.31

1.41

1.52

1.63

1.74

1.86

1.99

2.06

621

648

629

634

644

653

658

663

674

684

694

705

716

727

738

749

760

771

783

788

0.84

0.88

0.94

1.02

1.05

1.09

1.18

1.26

1.35

1.45

1.55

1.66

1.77

1.89

2.01

2.14

2.27

2.34

786

817

694

698

708

717

722

727

736

746

756

766

776

786

797

807

818

829

839

845

1.03

1.06

1.14

1.22

1.26

1.30

1.39

1.48

1.58

1.68

1.79

1.90

2.02

2.15

2.28

2.41

2.56

2.63

959

992

752

757

765

774

779

784

793

802

812

821

831

841

851

861

871

881

892

897

1.22

1.26

1.34

1.42

1.47

1.51

1.61

1.71

1.81

1.92

2.03

2.15

2.28

2.41

2.55

2.69

2.84

2.92

1138

1174

1248

1327

1368

1410

1498

1590

1687

1789

1896

2008

2125

2248

2376

2510

2650

2722

534

705

880

1061

1134

1173

1212

1294

1381

1472

1568

1669

1774

1885

2002

2124

2252

2385

2454

588

767

948

983

617

799

647

832

1020

1096

1176

1261

1351

1445

1545

1649

1759

1874

1995

2121

2187

709

902

775

976

846

1054

1137

1224

1317

1414

1517

1625

1738

1857

1918

922

1002

1087

1177

1271

1372

1477

1588

1646

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

806

810

818

827

832

836

845

854

863

872

882

891

901

911

921

930

941

946

1.42

1.46

1.55

1.64

1.68

1.73

1.83

1.94

2.05

2.16

2.28

2.41

2.54

2.68

2.82

2.97

3.13

3.21

1326

1363

1443

1527

1570

1615

1708

1805

1907

2015

2127

2245

2369

2497

2632

2772

2918

2994

855

859

868

876

880

885

893

902

911

920

929

938

948

957

967

977

986

991

1.63

1.67

1.76

1.86

1.91

1.96

2.06

2.17

2.29

2.41

2.54

2.67

2.81

2.95

3.10

3.26

3.42

3.50

1521

1561

1644

1733

1779

1826

1923

2026

2134

2246

2365

2488

2617

2751

2891

3038

3190

3268

902

906

914

922

926

931

939

948

956

965

974

983

992

1001

1011

1020

1030

—

1.85

1.89

1.99

2.09

2.14

2.19

2.30

2.42

2.54

2.66

2.80

2.93

3.08

3.23

3.38

3.55

3.72

—

1723

1765

1853

1946

1994

2043

2146

2253

2366

2483

2607

2735

2869

3010

3155

3307

3465

—

946

950

958

966

970

974

982

991

999

1008

1016

1025

1034

1043

1052

—

2.07

2.12

2.22

2.32

2.38

2.43

2.55

2.67

2.79

2.92

3.06

3.20

3.35

3.51

3.67

—

1932

1976

2068

2165

2215

2267

2374

2486

2603

2726

2854

2988

3127

3273

3424

—

988

991

999

1007

1011

1015

1023

1031

1040

1048

1057

1065

1074

—

2.30

2.35

2.46

2.56

2.62

2.68

2.80

2.92

3.05

3.19

3.33

3.48

3.64

—

2148

2194

2290

2391

2444

2497

2609

2725

2847

2974

3107

3246

3390

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 3.70.

*Motor drive range: 860 to 1080 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 23 — Fan Performance, 50TFQ009 — Horizontal Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

501

507

519

532

544

557

570

582

595

608

622

635

648

655

662

675

689

702

716

—

0.66

0.69

0.76

0.83

0.91

0.99

1.07

1.17

1.26

1.36

1.47

1.58

1.70

1.77

1.83

1.96

2.10

2.24

2.40

—

617

647

586

592

603

614

625

637

648

660

671

683

695

707

720

726

732

744

—

0.86

0.89

0.97

1.05

1.13

1.22

1.31

1.41

1.52

1.63

1.74

1.86

1.99

2.06

2.13

2.26

—

799

832

658

663

674

684

694

705

716

727

738

749

760

771

783

788

—

1.05

1.09

1.18

1.26

1.35

1.45

1.55

1.66

1.77

1.89

2.01

2.14

2.27

2.34

—

983

1020

1096

1176

1261

1351

1445

1545

1649

1759

1874

1995

2121

2187

—

722

727

736

746

756

766

776

786

797

807

818

—

1.26

1.30

1.39

1.48

1.58

1.68

1.79

1.90

2.02

2.15

2.28

—

1173

1212

1294

1381

1472

1568

1669

1774

1885

2002

2124

—

779

784

793

802

812

821

831

841

851

—

1.47

1.51

1.61

1.71

1.81

1.92

2.03

2.15

2.28

—

1368

1410

1498

1590

1687

1789

1896

2008

2125

—

709

902

775

976

846

1054

1137

1224

1317

1414

1517

1625

1738

1857

1918

1982

2112

—

922

1002

1087

1177

1271

1372

1477

1588

1646

1705

1828

1957

2092

2234

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

832

836

845

854

863

872

882

—

1.68

1.73

1.83

1.94

2.05

2.16

2.28

—

1570

1615

1708

1805

1907

2015

2127

—

880

885

893

902

911

—

1.91

1.96

2.06

2.17

2.29

—

1779

1826

1923

2026

2134

—

926

931

939

—

2.14

2.19

2.30

—

1994

2043

2146

—

970

—

2.38

—

2215

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 24 — Fan Performance, 50TFQ009 — Horizontal Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

501

507

519

532

544

557

570

582

595

608

622

635

648

655

662

675

689

702

716

723

0.66

0.69

0.76

0.83

0.91

0.99

1.07

1.17

1.26

1.36

1.47

1.58

1.70

1.77

1.83

1.96

2.10

2.24

2.40

2.47

617

647

586

592

603

614

625

637

648

660

671

683

695

707

720

726

732

744

757

769

782

788

0.86

0.89

0.97

1.05

1.13

1.22

1.31

1.41

1.52

1.63

1.74

1.86

1.99

2.06

2.13

2.26

2.41

2.57

2.73

2.81

799

832

658

663

674

684

694

705

716

727

738

749

760

771

783

788

794

806

817

829

841

847

1.05

1.09

1.18

1.26

1.35

1.45

1.55

1.66

1.77

1.89

2.01

2.14

2.27

2.34

2.42

2.56

2.72

2.88

3.05

3.14

983

1020

1096

1176

1261

1351

1445

1545

1649

1759

1874

1995

2121

2187

2253

2392

2536

2686

2843

2924

722

727

736

746

756

766

776

786

797

807

818

829

839

845

850

861

873

884

895

901

1.26

1.30

1.39

1.48

1.58

1.68

1.79

1.90

2.02

2.15

2.28

2.41

2.56

2.63

2.71

2.86

3.02

3.19

3.37

3.46

1173

1212

1294

1381

1472

1568

1669

1774

1885

2002

2124

2252

2385

2454

2524

2669

2820

2978

3143

3227

779

784

793

802

812

821

831

841

851

861

871

881

892

897

902

913

924

935

945

—

1.47

1.51

1.61

1.71

1.81

1.92

2.03

2.15

2.28

2.41

2.55

2.69

2.84

2.92

3.00

3.16

3.33

3.51

3.69

—

1368

1410

1498

1590

1687

1789

1896

2008

2125

2248

2376

2510

2650

2722

2796

2948

3106

3271

3442

—

709

902

775

976

846

1054

1137

1224

1317

1414

1517

1625

1738

1857

1918

1982

2112

2249

2392

2541

2619

922

1002

1087

1177

1271

1372

1477

1588

1646

1705

1828

1957

2092

2234

2307

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

832

836

845

854

863

872

882

891

901

911

921

930

941

946

951

961

971

—

1.68

1.73

1.83

1.94

2.05

2.16

2.28

2.41

2.54

2.68

2.82

2.97

3.13

3.21

3.29

3.46

3.64

—

1570

1615

1708

1805

1907

2015

2127

2245

2369

2497

2632

2772

2918

2994

3071

3229

3393

—

880

885

893

902

911

920

929

938

948

957

967

977

986

991

996

—

1.91

1.96

2.06

2.17

2.29

2.41

2.54

2.67

2.81

2.95

3.10

3.26

3.42

3.50

3.59

—

1779

1826

1923

2026

2134

2246

2365

2488

2617

2751

2891

3038

3190

3268

3348

—

926

931

939

948

956

965

974

983

992

1001

1011

1020

—

2.14

2.19

2.30

2.42

2.54

2.66

2.80

2.93

3.08

3.23

3.38

3.55

—

1994

2043

2146

2253

2366

2483

2607

2735

2869

3010

3155

3307

—

970

974

982

991

999

1008

1016

1025

1034

1043

1052

—

2.38

2.43

2.55

2.67

2.79

2.92

3.06

3.20

3.35

3.51

3.67

—

2215

2267

2374

2486

2603

2726

2854

2988

3127

3273

3424

—

1011

1015

1023

1031

1040

1048

1057

1065

1074

—

2.62

2.68

2.80

2.92

3.05

3.19

3.33

3.48

3.64

—

2444

2497

2609

2725

2847

2974

3107

3246

3390

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 3.70.

*Motor drive range: 860 to 1080 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 25 — Fan Performance, 50TFQ012 — Horizontal Discharge Units; Standard Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

523

536

549

562

575

588

601

614

628

641

655

668

682

696

710

723

737

751

765

779

793

0.58

0.63

0.68

0.74

0.80

0.86

0.93

1.00

1.07

1.15

1.23

1.31

1.40

1.49

1.59

1.69

1.80

1.91

2.02

2.14

2.26

541

587

592

603

614

626

637

649

661

673

685

697

709

722

734

747

760

773

785

798

812

825

—

0.73

0.78

0.84

0.90

0.96

1.03

1.10

1.17

1.25

1.33

1.42

1.51

1.60

1.70

1.80

1.90

2.01

2.13

2.25

2.37

—

680

730

657

666

676

686

696

707

717

728

739

750

761

773

784

796

808

820

832

844

—

0.88

0.94

1.00

1.07

1.14

1.21

1.28

1.36

1.44

1.53

1.61

1.71

1.80

1.91

2.01

2.12

2.24

2.35

—

825

879

718

726

735

743

752

762

771

781

791

801

812

822

833

844

855

866

—

1.05

1.11

1.17

1.24

1.31

1.39

1.47

1.55

1.64

1.72

1.82

1.92

2.02

2.12

2.23

2.35

—

977

1035

1096

1159

1226

1296

1369

1445

1525

1608

1695

1786

1880

1979

2081

2187

—

775

783

790

798

806

815

823

832

841

850

860

870

880

890

—

1.22

1.28

1.35

1.42

1.50

1.58

1.66

1.75

1.84

1.93

2.03

2.13

2.23

2.34

—

1135

1196

1260

1328

1398

1472

1548

1629

1712

1799

1890

1984

2082

2184

—

637

783

936

689

839

996

744

898

1059

1125

1194

1267

1343

1423

1506

1593

1683

1777

1876

1978

2085

2195

—

802

961

864

1026

1095

1167

1243

1322

1405

1492

1582

1677

1775

1877

1984

2095

2210

—

929

997

1069

1144

1223

1305

1392

1482

1577

1675

1778

1885

1996

2112

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

830

837

843

850

858

865

873

881

889

898

907

916

—

1.39

1.46

1.53

1.61

1.69

1.77

1.86

1.95

2.04

2.14

2.24

2.35

—

1298

1363

1431

1502

1576

1653

1733

1816

1904

1995

2089

2187

—

883

889

894

901

907

914

921

928

936

944

—

1.57

1.65

1.72

1.80

1.88

1.97

2.06

2.16

2.25

2.35

—

1466

1534

1606

1680

1758

1838

1922

2010

2100

2195

—

934

938

944

949

955

961

967

974

—

1.76

1.83

1.91

2.00

2.09

2.18

2.27

2.37

—

1638

1710

1785

1863

1944

2029

2116

2207

—

982

986

991

996

1001

1007

—

1.95

2.03

2.11

2.20

2.29

2.38

—

1815

1891

1969

2051

2135

2223

—

1029

1033

1037

1041

—

2.14

2.23

2.31

2.40

—

1996

2075

2157

2242

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

*Motor drive range: 685 to 935 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 26 — Fan Performance, 50TFQ012 — Horizontal Discharge Units; Alternate Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

523

536

549

562

575

588

601

614

628

641

655

668

682

696

710

723

737

751

765

779

793

0.58

0.63

0.68

0.74

0.80

0.86

0.93

1.00

1.07

1.15

1.23

1.31

1.40

1.49

1.59

1.69

1.80

1.91

2.02

2.14

2.26

541

587

592

603

614

626

637

649

661

673

685

697

709

722

734

747

760

773

785

798

812

825

838

0.73

0.78

0.84

0.90

0.96

1.03

1.10

1.17

1.25

1.33

1.42

1.51

1.60

1.70

1.80

1.90

2.01

2.13

2.25

2.37

2.50

680

730

657

666

676

686

696

707

717

728

739

750

761

773

784

796

808

820

832

844

856

869

881

0.88

0.94

1.00

1.07

1.14

1.21

1.28

1.36

1.44

1.53

1.61

1.71

1.80

1.91

2.01

2.12

2.24

2.35

2.48

2.61

2.74

825

879

718

726

735

743

752

762

771

781

791

801

812

822

833

844

855

866

877

889

900

912

—

1.05

1.11

1.17

1.24

1.31

1.39

1.47

1.55

1.64

1.72

1.82

1.92

2.02

2.12

2.23

2.35

2.46

2.59

2.71

2.85

—

977

1035

1096

1159

1226

1296

1369

1445

1525

1608

1695

1786

1880

1979

2081

2187

2297

2412

2531

2654

—

775

783

790

798

806

815

823

832

841

850

860

870

880

890

900

910

921

932

—

1.22

1.28

1.35

1.42

1.50

1.58

1.66

1.75

1.84

1.93

2.03

2.13

2.23

2.34

2.46

2.57

2.70

2.82

—

1135

1196

1260

1328

1398

1472

1548

1629

1712

1799

1890

1984

2082

2184

2290

2400

2514

2633

—

637

783

936

689

839

996

744

898

1059

1125

1194

1267

1343

1423

1506

1593

1683

1777

1876

1978

2085

2195

2310

2430

2554

802

961

864

1026

1095

1167

1243

1322

1405

1492

1582

1677

1775

1877

1984

2095

2210

2330

929

997

1069

1144

1223

1305

1392

1482

1577

1675

1778

1885

1996

2112

—

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

830

837

843

850

858

865

873

881

889

898

907

916

925

934

944

954

—

1.39

1.46

1.53

1.61

1.69

1.77

1.86

1.95

2.04

2.14

2.24

2.35

2.45

2.57

2.69

2.81

—

1298

1363

1431

1502

1576

1653

1733

1816

1904

1995

2089

2187

2289

2395

2504

2618

—

883

889

894

901

907

914

921

928

936

944

952

960

969

978

—

1.57

1.65

1.72

1.80

1.88

1.97

2.06

2.16

2.25

2.35

2.46

2.57

2.68

2.80

—

1466

1534

1606

1680

1758

1838

1922

2010

2100

2195

2293

2395

2500

2610

—

934

938

944

949

955

961

967

974

981

988

996

1004

—

1.76

1.83

1.91

2.00

2.09

2.18

2.27

2.37

2.47

2.57

2.68

2.80

—

1638

1710

1785

1863

1944

2029

2116

2207

2302

2399

2501

2607

—

982

986

991

996

1001

1007

1012

1019

1025

1032

—

1.95

2.03

2.11

2.20

2.29

2.38

2.48

2.58

2.69

2.80

—

1815

1891

1969

2051

2135

2223

2314

2409

2507

2608

—

1029

1033

1037

1041

1046

1051

1056

1062

—

2.14

2.23

2.31

2.40

2.50

2.60

2.70

2.80

—

1996

2075

2157

2242

2331

2422

2516

2615

—

LEGEND

Refer to page 43 General Fan Performance Notes.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

*Motor drive range: 835 to 1085 rpm. All other rpms require field-

supplied drive.

Download from Www.Somanuals.com. All Manuals Search And Download.

Table 27 — Fan Performance, 50TFQ012 — Horizontal Discharge Units; High-Static Motor and Drive*

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

Bhp

0.4

Bhp

0.6

0.8

1.0

Rpm

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts Rpm

Bhp

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

523

536

549

562

575

588

601

614

628

641

655

668

682

696

710

723

737

751

765

779

793

0.58

0.63

0.68

0.74

0.80

0.86

0.93

1.00

1.07

1.15

1.23

1.31

1.40

1.49

1.59

1.69

1.80

1.91

2.02

2.14

2.26

541

587

592

603

614

626

637

649

661

673

685

697

709

722

734

747

760

773

785

798

812

825

838

0.73

0.78

0.84

0.90

0.96

1.03

1.10

1.17

1.25

1.33

1.42

1.51

1.60

1.70

1.80

1.90

2.01

2.13

2.25

2.37

2.50

680

730

657

666

676

686

696

707

717

728

739

750

761

773

784

796

808

820

832

844

856

869

881

0.88

0.94

1.00

1.07

1.14

1.21

1.28

1.36

1.44

1.53

1.61

1.71

1.80

1.91

2.01

2.12

2.24

2.35

2.48

2.61

2.74

825

879

718

726

735

743

752

762

771

781

791

801

812

822

833

844

855

866

877

889

900

912

923

1.05

1.11

1.17

1.24

1.31

1.39

1.47

1.55

1.64

1.72

1.82

1.92

2.02

2.12

2.23

2.35

2.46

2.59

2.71

2.85

2.98

977

1035

1096

1159

1226

1296

1369

1445

1525

1608

1695

1786

1880

1979

2081

2187

2297

2412

2531

2654

2782

775

783

790

798

806

815

823

832

841

850

860

870

880

890

900

910

921

932

942

953

965

1.22

1.28

1.35

1.42

1.50

1.58

1.66

1.75

1.84

1.93

2.03

2.13

2.23

2.34

2.46

2.57

2.70

2.82

2.95

3.09

3.23

1135

1196

1260

1328

1398

1472

1548

1629

1712

1799

1890

1984

2082

2184

2290

2400

2514

2633

2756

2883

3014

637

783

936

689

839

996

744

898

1059

1125

1194

1267

1343

1423

1506

1593

1683

1777

1876

1978

2085

2195

2310

2430

2554

802

961

864

1026

1095

1167

1243

1322

1405

1492

1582

1677

1775

1877

1984

2095

2210

2330

929

997

1069

1144

1223

1305

1392

1482

1577

1675

1778

1885

1996

2112

EXTERNAL STATIC PRESSURE (in. wg)

1.6

AIRFLOW

(Cfm)

1.2

1.4

Bhp

1.8

Bhp

2.0

Bhp

Rpm

Bhp Watts Rpm

Watts Rpm

Bhp

Watts

Rpm

Watts

Rpm

Watts

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

830

837

843

850

858

865

873

881

889

898

907

916

925

934

944

954

963

974

984

994

1005

1.39

1.46

1.53

1.61

1.69

1.77

1.86

1.95

2.04

2.14

2.24

2.35

2.45

2.57

2.69

2.81

2.93

3.07

3.20

3.34

3.49

1298

1363

1431

1502

1576

1653

1733

1816

1904

1995

2089

2187

2289

2395

2504

2618

883

889

894

901

907

914

921

928

936

944

952

960

969

978

986

996

1.57

1.65

1.72

1.80

1.88

1.97

2.06

2.16

2.25

2.35

2.46

2.57

2.68

2.80

2.92

3.05

3.18

3.31

3.45

3.60

3.74

1466

1534

1606

1680

1758

1838

1922

2010

2100

2195

2293

2395

2500

2610

2723

2840

2962

3088

3219

3353

3492

934

938

1.76

1.83

1.91

2.00

2.09

2.18

2.27

2.37

2.47

2.57

2.68

2.80

2.91

3.03

3.16

3.29

3.42

3.56

3.71

3.85

4.01

1638

1710

1785

1863

1944

2029

2116

2207

2302

2399

2501

2607

2716

2828

2946

3067

3192

3322

3456

3594

3737

982

986

1.95

2.03

2.11

2.20

2.29

2.38

2.48

2.58

2.69

2.80

2.91

3.03

3.15

3.27

3.40

3.54

3.67

3.82

3.96

4.12

4.27

1815

1891

1969

2051

2135

2223

2314

2409

2507

2608

2713

2822

2935

3052

3173

3297

3426

3560

3697

3839

3986

1029

1033

1037

1041

1046

1051

1056

1062

1068

1074

1080

1087

1094

1101

1108

1115

1123

1131

1139

1148

1156

2.14

2.23

2.31

2.40

2.50

2.60

2.70

2.80

2.91

3.03

3.14

3.26

3.39

3.52

3.65

3.79

3.93

4.08

4.23

4.38

4.55

1996

2075

2157

2242

2331

2422

2516

2615

2716

2821

2930

3042

3159

3279

3403

3531

3664

3801

3943

4088

4238

944

991

949

996

955

1001

1007

1012

1019

1025

1032

1038

1046

1053

1061

1068

1076

1085

1093

1102

1111

1119

961

967

974

981

988

996

1004

1011

1020

1028

1037

1045

1054

1063

1073

1082

2736 1005

2858 1014

2985 1024

3116 1034

3251 1044

LEGEND

Refer to General Fan Performance Notes below.

Bhp

—

Brake Horsepower Input to Fan

Input Watts to Motor

NOTES:

Watts

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 5.25.

*Motor drive range: 830 to 1130 rpm. All other rpms require field-

supplied drive.

GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES

1. Fan performance is based on clean filters and wet coil data.

2. Extensive motor and electrical testing on these units ensures

that the full range of the motor can be utilized with confidence.

Using fan motors up to the wattage ratings shown will not result

in nuisance tripping or premature motor failure. Unit warranty

will not be affected. For additional information on motor perfor-

mance Table 9.

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

Tables 11A and 11B for static pressure information.

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

your Carrier representative for details.

5. Interpolation is permissible. Do not extrapolate.

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PRE-START-UP

START-UP

Unit Preparation — Make sure that the unit has been

installed in accordance with installation instructions and

applicable codes.

Failure to observe the following warnings could result in

serious personal injury:

1. Follow recognized safety practices and wear protec-

tive goggles when checking or servicing refrigerant

system.

2. Do not operate the compressor or provide any electric

power to the unit unless the compressor terminal

cover is in place and secured.

Return-Air Filters — Make sure that the correct filters

are installed in the unit (see Table 1). Do not operate the unit

without return-air filters.

Outdoor-Air Inlet Screen — The outdoor-air inlet screen

must be in place before operating the unit.

Compressor Mounting — Compressors are internally

spring mounted. Do not loosen or remove the compressor hold-

down bolts.

3. Do not remove the compressor terminal cover until all

electrical sources are disconnected.

4. Relieve all pressure from the system before touching

or disturbing anything inside the compressor terminal

box if a refrigerant leak is suspected around the com-

pressor terminals. Use accepted methods to recover

refrigerant.

Internal Wiring — Check all electrical connections in

unit control boxes; tighten as required.

Refrigerant Service Ports — Each refrigerant system

has 3 Schrader-type service gage ports: One on the suction line,

one on the cooling mode liquid line, and one on the compressor

discharge line. Be sure that the caps on the ports are tight.

The port on the cooling mode liquid line and one port on the

discharge line have protective devices installed on them.

HIGH FLOW REFRIGERANT VALVES — Two high flow

valves may be located on the hot gas tube coming out of the

compressor and the suction tube going into the compressor.

Large black plastic caps identify these valves with O-rings

inside screwing the cap and onto a brass body. No field access

to these valves is available at this time. Ensure the plastic caps

remain on the valves and are tight or the possibility of refriger-

ant leakage could occur.

5. Never attempt to repair a soldered connection while

the refrigerant system is under pressure.

6. Do not use a torch to remove any component. The

system contains oil and refrigerant under pressure. To

remove a component, wear protective goggles and

proceed as follows:

a. Shut off electrical power to the unit and tag

disconnect.

b. Relieve all pressure from the system using both

the high and low-pressure ports. Use accepted

methods to recover refrigerant.

c. Cut the component connection tubing with tubing

cutter, and remove the component from the unit.

d. Carefully unsweat the remaining tubing stubs

when necessary. Oil can ignite when exposed

to a torch flame.

Compressor Rotation — It is important to be certain

that the scroll compressor (size 012 only) is rotating in the

proper direction. To determine whether or not the compressor

is rotating in the proper direction:

1. Connect service gages to the suction and discharge pres-

sure fittings.

2. Energize the compressor.

Proceed as follows to inspect and prepare the unit for initial

start-up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING, CAU-

TION, and INFORMATION labels attached to or

shipped with unit.

3. The suction pressure should drop and the discharge pres-

sure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge pres-

sure does not rise to normal levels:

1. Note that the indoor fan is probably also rotating in the

wrong direction.

2. Turn off power to the unit and tag disconnect.

3. Reverse any two of the unit power leads.

4. Turn on power to the unit. Re-energize compressor.

The suction and discharge pressure levels should now move

to their normal start-up levels.

3. Make the following inspections:

a. Inspect for shipping and handling damages such

as broken lines, loose parts, or disconnected wires.

b. Inspect for oil at all refrigerant tubing connections

and on the unit base. Detecting oil generally indi-

cates a refrigerant leak. Leak-test all refrigerant

tubing connections using an electronic leak detec-

tor, halide torch, or liquid-soap solution.

c. Inspect all field-wiring and factory-wiring con-

nections. Be sure that connections are completed

and tight. Ensure that electrical wires do not

contact refrigerant tubing.

d. Inspect the coil fins. If damaged during shipping

and handling, carefully straighten the fins with a

fin comb.

NOTE: When the compressor is rotating in the wrong

direction, the unit makes more noise and does not provide

heating/cooling.

Cooling — To start the unit, turn on main power supply. Set

the system selector switch at COOL position and the fan switch

at AUTO position. Adjust the thermostat to a setting below room

temperature. The compressor starts on closure of the contactor.

Check the unit charge. Refer to Refrigerant Charge section

on page 48.

Reset the thermostat at a position above room temperature.

The compressor will shut off.

TO SHUT OFF UNIT — Set the system selector switch at

OFF position. Resetting the thermostat at a position above

room temperature shuts the unit off temporarily until the space

temperature exceeds the thermostat setting.

4. Verify the following conditions:

a. Make sure that the outdoor-fan blades are

correctly positioned in the fan orifice. Refer to

Outdoor-Fan Adjustment section on page 48 for

more details.

b. Make sure that an air filter(s) is in place.

c. Make sure that the condensate drain trap is filled

with water to ensure proper drainage.

The compressor restart is accomplished by manual reset at

the thermostat by turning the selector switch to OFF position

and then ON position.

d. Make sure that all tools and miscellaneous loose

parts have been removed.

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If field-installed accessory CO₂sensors are connected to the

EconoMi$er IV control, a demand controlled ventilation strate-

gy will begin to operate. As the CO₂level in the zone increases

above the CO₂set point, the minimum position of the damper

will be increased proportionally. As the CO₂level decreases

because of the increase in fresh air, the outdoor-air damper will

be proportionally closed. Damper position will follow the high-

er demand condition from DCV mode or free cooling mode.

Heating — To start the unit, turn on the main power supply.

Set the thermostat at HEAT position at a setting above room

temperature, the fan at AUTO position.

The first stage of the thermostat energizes the indoor-fan

motor, compressor, and outdoor fan; the second stage energizes

electric heater elements, if installed. Check the heating effects

at the air supply grille(s).

If the accessory electric heaters do not energize, reset limit

switch (located on indoor-fan scroll) by pressing the button

located between terminals on the switch.

TO SHUT OFF UNIT — Set the system selector switch at

OFF position. Resetting the heating selector lever below room

temperature temporarily shuts the unit off until the space

temperature falls below the thermostat setting.

Damper movement from full closed to full open (or vice

versa) will take between 1¹/₂and 2¹/₂minutes.

If free cooling can be used as determined from the appropri-

ate changeover command (switch, dry bulb, enthalpy curve,

differential dry bulb, or differential enthalpy), a call for cooling

(Y1 closes at the thermostat) will cause the control to modulate

the dampers open to maintain the supply-air temperature set

point at 50 to 55 F.

As the supply-air temperature drops below the set point

range of 50 to 55 F, the control will modulate the outdoor-air

dampers closed to maintain the proper supply-air temperature.

HEATING, UNITS WITH ECONOMI$ER IV — When the

room temperature calls for heat, the heating controls are ener-

gized as described in the Heating, Units Without Economizer

section. When the thermostat is satisfied, the economizer

damper moves to the minimum position.

COOLING, UNITS WITH ECONOMI$ER2, PREMIER-

LINK™ CONTROL AND A THERMOSTAT — When free

cooling is not available, the compressors will be controlled by

the PremierLink control in response to the Y1 and Y2 inputs

from the thermostat.

Safety Relief — A soft solder joint on the suction line at

the loss-of-charge/low-pressure fitting provides pressure relief

under abnormal temperature and pressure conditions.

Ventilation (Continuous Fan) — Set the fan and system

selector switches at ON and OFF positions, respectively. The in-

door fan operates continuously to provide constant air circulation.

Operating Sequence

COOLING, UNITS WITHOUT ECONOMIZER — When

thermostat calls for cooling, terminals G and Y1 are energized.

The indoor-fan contactor (IFC), reversing valve solenoid

(RVS1) and compressor contactor no. 1 (C1) are energized and

indoor-fan motor, compressor no. 1, and outdoor fan starts. The

outdoor-fan motor(s) run continuously while unit is cooling. If

the thermostat calls for a second stage of cooling by energizing

Y2, compressor contactor no. 2 (C2) and reversing valve sole-

noid (RVS2) are energized and compressor no. 2 starts.

HEATING, UNITS WITHOUT ECONOMIZER — Upon a

request for heating from the space thermostat, terminal W1 will

be energized with 24 v. The IFC, outdoor-fan contactor (OFC),

C1, and C2 will be energized. The reversing valves switch po-

sition and the indoor fan, outdoor fan, compressor no. 1, and

compressor no. 2 are energized.

The PremierLink control will use the following information

to determine if free cooling is available:

• Indoor fan has been on for at least 30 seconds.

• The SPT, SAT, and OAT inputs must have valid readings.

• OAT must be less than 75 F.

• OAT must be less than SPT.

• Enthalpy must be LOW (may be jumpered if an enthalpy

sensor not available).

• Economizer position is NOT forced.

If the space temperature continues to fall while W1 is ener-

gized, W2 will be energized with 24 v, and the heater contac-

tor(s) (HC) will be energized, which will energize the electric

heater(s).

When the space thermostat is satisfied, W2 will be deener-

gized first, and the electric heater(s) will be deenergized.

Upon a further rise in space temperature, W1 will be

deenergized, and the reversing valve solenoids (RVS1 and

RVS2) will be energized.

Pre-cooling occurs when the is no call from the thermostat

except G. Pre-cooling is defined as the economizer modulates

to provide 70 F supply air.

When free cooling is available the PremierLink control will

control the compressors and economizer to provide a supply-

air temperature determined to meet the Y1 and Y2 calls from

the thermostat using the following three routines. The three

control routines are based on OAT, where:

SASP = Supply Air Set Point

COOLING, UNITS WITH ECONOMI$ER IV — When free

cooling is not available, the compressors will be controlled by

the zone thermostat. When free cooling is available, the

outdoor-air damper is modulated by the EconoMi$er IV con-

trol to provide a 50 to 55 F supply-air temperature into the

zone. As the supply-air temperature fluctuates above 55 or

below 50 F, the dampers will be modulated (open or close)

to bring the supply-air temperature back within set point limits.

DXCTLO = Direct Expansion Cooling Lockout Set Point

Routine 1 — (OAT < DXCTLO)

• Y1 energized — economizer maintains a SASP =

(SATLO1 + 3).

• Y2 energized — economizer maintains a SASP =

(SATLO2 + 3).

Routine 2 — (DXCTLO < OAT < 68 F)

For EconoMi$er IV operation, there must be a thermostat

call for the fan (G). This will move the damper to its minimum

position during the occupied mode.

Above 50 F supply-air temperature, the dampers will modu-

late from 100% open to the minimum open position. From 50 F

to 45 F supply-air temperature, the dampers will maintain at

the minimum open position. Below 45 F the dampers will be

completely shut. As the supply-air temperature rises, the damp-

ers will come back open to the minimum open position once

the supply-air temperature rises to 48 F.

• If only Y1 energized, the economizer maintains a SASP

= (SATLO1 + 3).

• If SAT > SASP + 5 and economizer position > 80%,

economizer will go to minimum position for 3 minutes or

until SAT > 68 F.

• First stage of mechanical cooling will be energized.

• Integrator resets.

• Economizer opens again and controls to current SASP

after stage one on for 90 seconds.

• With Y1 and Y2 energized Economizer maintains an

SASP = SATLO2 + 3.

If optional power exhaust is installed, as the outdoor-air

damper opens and closes, the power exhaust fans will be ener-

gized and deenergized.

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• If SAT > SASP + 5 and economizer position >80%,

economizer will go to minimum position for 3 minutes or

until SAT > 68 F.

• If compressor no. 1 is on then second stage of mechani-

cal cooling will be energized. Otherwise the first stage

will be energized.

• Integrator resets.

• Economizer opens again and controls to SASP after

stage one on for 90 seconds.

The economizer set point will always be at least one degree

below the cooling set point, allowing for a smooth transition

from mechanical cooling with economizer assist, back to

economizer cooling as the cooling set point is achieved.

The compressors may be used for initial cooling then the

PremierLink controller will modulate the economizer using an

error reduction calculation to hold the space temperature

between the heating and cooling set points. See Fig. 42.

The controller uses the following conditions to determine

economizer cooling:

Routine 3 — (OAT > 68)

• Economizer is opened 100%.

• Enthalpy is Low

• Compressors 1 and 2 are cycled based on Y1 and Y2

using minimum on and off times and watching the sup-

ply air temperature as compared to SATLO1 and

SATLO2 set points.

• SAT reading is available

• OAT reading is available

• SPT reading is available

• OAT ≤SPT

• Economizer Position is NOT forced

If optional power exhaust is installed, as the outdoor-air

damper opens and closes, the power exhaust fans will be ener-

gized and deenergized.

If field-installed accessory CO₂sensors are connected to the

PremierLink™ control, a PID-controlled demand ventilation

strategy will begin to operate. As the CO₂level in the zone

increases above the CO₂set point, the minimum position of the

damper will be increased proportionally. As the CO₂level

decreases because of the increase in fresh air, the outdoor-air

damper will be proportionally closed.

HEATING, UNITS WITH ECONOMI$ER2, PREMIER-

LINK CONTROL AND A THERMOSTAT — When the

thermostat calls for heating, terminal W1 is energized. The

PremierLink control will move the economizer damper to the

minimum position if there is a call for G and closed if there is a

call for W1 without G. In order to prevent thermostat from short

cycling, the unit is locked into the heating mode for at least

10 minutes when W1 is energized.

If any of the above conditions are not met, the economizer

submaster reference (ECSR) is set to maximum limit and the

damper moves to minimum position. The operating sequence

is complete. The ECSR is recalculated every 30 seconds.

If an optional power exhaust is installed, as the outdoor-air

damper opens and closes, the power exhaust fans will be

energized and deenergized.

If field-installed accessory CO₂sensors are connected to

the PremierLink control, a PID-controlled demand ventilation

strategy will begin to operate. As the CO₂level in the zone

increases above the CO₂set point, the minimum position of the

damper will be increased proportionally. As the CO₂level

decreases because of the increase in fresh air, the outdoor-air

damper will be proportionally closed.

COOLING, UNITS WITH ECONOMI$ER2, PREMIER-

LINK CONTROL AND A ROOM SENSOR — When free

cooling is not available, the compressors will be controlled by

the PremierLink controller using a PID (proportional integral)

Error reduction calculation as indicated by Fig. 41.

TEMPERATURE CONTROL

The PremierLink controller will use the following informa-

tion to determine if free cooling is available:

SET POINT

TEMPERATURE

• Indoor fan has been on for at least 30 seconds.

• The SPT, SAT, and OAT inputs must have valid readings.

• OAT must be less than 75 F.

• OAT must be less than SPT.

TIME

• Enthalpy must be LOW (may be jumpered if and

enthalpy sensor is not available).

• Economizer position is NOT forced.

NOTE: PremierLink control performs smart staging of 2 stages of DX

cooling and up to 3 stages of heat.

When free cooling is available, the outdoor-air damper is

positioned through the use of a Proportional Integral (PID)

control process to provide a calculated supply-air temperature

into the zone. The supply air will maintain the space tempera-

ture between the heating and cooling set points as indicated in

Fig. 42.

Fig. 41 — DX Cooling Temperature

Control Example

The PremierLink control will integrate the compressor

stages with the economizer based on similar logic as the three

routines listed in the previous section. The SASP will float up

and down based on the error reduction calculations that com-

pare space temperature and space set point.

TEMPERATURE CONTROL

When outside-air temperature conditions require the econo-

mizer to close for a compressor stage-up sequence, the econo-

mizer control integrator is reset to zero after the stage-up se-

quence is completed. This prevents the supply-air temperature

from dropping too quickly and creating a freeze condition that

would make the compressor turn off prematurely.

COOL SETPOINT

TEMPERATURE

HEAT SETPOINT

TIME

The high space set point is used for DX (direct expansion)

cooling control, while the economizer space set point is a

calculated value between the heating and cooling set points.

Fig. 42 — Economizer Temperature

Control Example

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HEATING, UNIT WITH ECONOMI$ER2, PREMIERLINK™

CONTROL AND A ROOM SENSOR — Every 40 seconds

the controller will calculate the required heat stages (maximum

of 3) to maintain supply air temperature (SAT) if the following

qualifying conditions are met:

• Indoor fan has been on for at least 30 seconds.

• COOL mode is not active.

6. Secure the sections together. Reposition the coil sections,

and remove the coil corner post from between the top

panel and center post. Install the coil corner post and coil

center post, and replace all screws.

CONDENSATE DRAIN — Check and clean each year at the

start of cooling season. In winter, keep the drain dry or protect

it against freeze-up.

• OCCUPIED, TEMP.COMPENSATED START or HEAT

mode is active.

• SAT reading is available.

• Fire shutdown mode is not active.

If all of the above conditions are met, the number of heat

stages is calculated; otherwise the required number of heat

stages will be set to 0.

If the PremierLink controller determines that heat stages are

required, the economizer damper will be moved to minimum

position if occupied and closed if unoccupied.

SERVICE

When servicing the unit, shut off all electrical power to the

unit to avoid shock hazard or injury from rotating parts.

Cleaning — Inspect the unit interior at the beginning of each

Fig. 43 — Cleaning Outdoor Coil

heating and cooling season or as operating conditions require.

INDOOR COIL

1. Turn off the unit power and tag disconnect. Remove the

filter access panel and indoor coil access panel.

2. If an economizer or accessory two-position damper is

installed, remove the economizer or two-position damper

by disconnecting the economizer plug and removing the

mounting screws.

3. Slide the filters out of the unit.

4. Clean the coil using a commercial coil cleaner or dish-

washer detergent in a pressurized spray canister. Wash

both sides of the coil and flush with clean water. For best

results, backflush toward the return-air section to remove

foreign material.

5. Flush the condensate pan after completion.

6. Reinstall the economizer/two-position damper and filters.

7. Reconnect the wiring.

Fig. 44 — Propping Up Top Panel

8. Replace the access panels.

OUTDOOR COILS — Inspect the coils monthly. Clean

condenser coils annually, and as required by location and

outdoor-air conditions.

Clean 2-row coils as follows:

1. Turn off the unit power and tag disconnect.

2. Remove the top panel screws on the outdoor end of the

unit.

3. Remove the outdoor coil corner post. See Fig. 43. To hold

the top panel open, place the coil corner post between the

top panel and the center post. See Fig. 44.

4. Remove the device holding the coil sections together at

the return end of the outdoor coil. Carefully separate the

outer coil section 3 to 4 in. from the inner coil section.

See Fig. 45.

5. Use a water hose or other suitable equipment to flush

down between the 2 coil sections to remove dirt and

debris. Clean the outer surfaces with a stiff brush in the

normal manner.

Fig. 45 — Separating Coil Sections

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FILTERS — Clean or replace at the start of each heating and

cooling season, or more often if operating conditions require it.

Replacement filters must be the same dimensions as original

filters.

OUTDOOR-AIR INLET SCREEN — Clean the screen with

steam or hot water and a mild detergent. Do not use disposable

filters in place of screens.

Unit panels must be in place when the unit is operating

during charging procedure.

NO CHARGE — Use standard evacuating techniques. After

evacuating the system, weigh in the specified amount of refrig-

erant (refer to Table 1).

LOW CHARGE COOLING — Use the Cooling Charging

Charts, Fig. 47-49. Vary the refrigerant until the conditions of

the appropriate chart are met. Note that the charging charts are

different from the type normally used. Charts are based on

charging the units to the correct superheat for the various oper-

ating conditions. An accurate pressure gage and temperature

sensing device are required. Connect the pressure gage to the

service port on the suction line. Mount the temperature sensing

device on the suction line and insulate it so that outdoor ambi-

ent temperature does not affect the reading. Indoor-air cfm

must be within the normal operating range of the unit.

TO USE COOLING CHARGING CHARTS — Take the out-

door ambient temperature and read the suction pressure gage.

Refer to the appropriate chart to determine what the suction

temperature should be. If the suction temperature is high, add

refrigerant. If the suction temperature is low, carefully recover

some of the charge. Recheck the suction pressure as charge is

adjusted.

Lubrication

COMPRESSORS — Each compressor is charged with correct

amount of oil at the factory.

FAN MOTOR BEARINGS — Fan motor bearings are per-

manently lubricated. No further lubrication of outdoor or

indoor-fan motors is required.

Outdoor Fan Adjustment (Fig. 46)

1. Shut off the unit power supply and tag disconnect.

2. Remove the outdoor-fan assembly (grille, motor, motor

cover, and fan) and loosen the fan hub setscrews.

3. Adjust the fan height as shown in Fig. 46.

4. Tighten the setscrews and replace the outdoor-fan assembly.

EXAMPLE: (Fig. 47)

Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 F

Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 psig

Suction Temperature should be . . . . . . . . . . . . . . . . . . . . . 49 F

(Suction Temperature may vary 5° F.)

HEATING CHARGE — Do not attempt to adjust refrigerant

charge while the unit is operating in the heating mode. If the

charge amount is believed to be incorrect, recover refrigerant

and weigh in the amount listed on the unit rating plate.

UNIT

“A”

in.

2.75

3.50

VOLTAGE

208/230 V

460 V and 575 V

Replacement Parts — A complete list of replacement

parts can be obtained from any Carrier distributor.

Fig. 46 — Outdoor Fan Adjustment

Blower Belt Adjustment — Inspect the blower belt

for wear, proper belt tension, and pulley alignment as condi-

tions require or at the beginning of each heating and air condi-

tioning season.

Refer to Step 7 — Adjust Indoor-Fan Speed on page 25 for

adjustment and alignment procedures.

High-Pressure Switch — Located on the compressor

hot gas line is a high-pressure switch, which contains a

Schrader core depressor. This switch opens at 428 psig and

closes at 320 psig. No adjustment is necessary. Refer to

Table 1.

Loss-of-Charge Switch — Located on the outdoor liq-

uid line is a low-pressure switch which functions as a loss-of-

charge switch. This switch contains a Schrader core depressor.

This switch opens at 7 psig and closes at 22 psig. No adjust-

ment is necessary. Refer to Table 1.

Freezestat — Located on the “hair pin” end of the indoor

coil is a bimetal temperature sensing switch. This switch pro-

tects the evaporator coil from freeze-up due to lack of airflow.

The switch opens at 30 F and closes at 45 F. No adjustment is

necessary. Refer to Table 1.

Refrigerant Charge — The amount of refrigerant charge

is listed on the unit nameplate (also refer to Table 1). Refer to

Carrier Refrigerant Service Techniques Manual, Refrigerants

section.

Fig. 47 — Cooling Charging Chart, 50TFQ008

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Fig. 49 — Cooling Charging Chart, 50TFQ012

Fig. 48 — Cooling Charging Chart, 50TFQ009

TROUBLESHOOTING

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TR1.

DIFFERENTIAL ENTHALPY — To check differential

enthalpy:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Place 620-ohm resistor across S_Oand +.

3. Place 1.2 kilo-ohm resistor across S_Rand +. The Free

Cool LED should be lit.

4. Remove 620-ohm resistor across S_Oand +. The Free

Cool LED should turn off.

5. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

SINGLE ENTHALPY — To check single enthalpy:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The

Free Cool LED should be lit.

3. Set the enthalpy potentiometer to D (fully CW). The Free

Cool LED should turn off.

Unit Troubleshooting — For unit troubleshooting, re-

fer to Fig. 50 and Table 28.

EconoMi$er IV Troubleshooting — See Table 29

for EconoMi$er IV logic.

A functional view of the EconoMi$er IV is shown in

Fig. 51. Typical settings, sensor ranges, and jumper positions

are also shown. An EconoMi$er IV simulator program is avail-

able from Carrier to help with EconoMi$er IV training and

troubleshooting.

ECONOMI$ER IV PREPARATION — This procedure is

used to prepare the EconoMi$er IV for troubleshooting. No

troubleshooting or testing is done by performing the following

procedure.

NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm

resistor, and a 5.6 kilo-ohm resistor which are not supplied

with the EconoMi$er IV.

IMPORTANT: Be sure to record the positions of all poten-

tiometers before starting troubleshooting.

1. Disconnect power at TR and TR1. All LEDs should be

off. Exhaust fan contacts should be open.

4. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

2. Disconnect device at P and P1.

3. Jumper P to P1.

DCV (DEMAND CONTROLLED VENTILATION) AND

POWER EXHAUST — To check DCV and Power Exhaust:

4. Disconnect wires at T and T1. Place 5.6 kilo-ohm resistor

across T and T1.

1. Make sure EconoMi$er IV preparation procedure has

been performed.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals S_Oand +.

Connect 1.2 kilo-ohm 4074EJM checkout resistor across

terminals S_Oand +.

8. Put 620-ohm resistor across terminals S_Rand +.

9. Set minimum position, DCV set point, and exhaust

potentiometers fully CCW (counterclockwise).

2. Ensure terminals AQ and AQ1 are open. The LED for

both DCV and Exhaust should be off. The actuator

should be fully closed.

3. Connect a 9-v battery to AQ (positive node) and AQ1

(negative node). The LED for both DCV and Exhaust

should turn on. The actuator should drive to between 90

and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust

LED turns off. The LED should turn off when the

potentiometer is approximately 90%. The actuator should

remain in position.

10. Set DCV maximum position potentiometer fully CW

(clockwise).

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5. Turn the DCV set point potentiometer CW until the DCV

LED turns off. The DCV LED should turn off when the

potentiometer is approximately 9 v. The actuator should

drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until

the Exhaust LED turns on. The exhaust contacts will

close 30 to 120 seconds after the Exhaust LED turns on.

2. Set the Enthalpy potentiometer to A. The Free Cool LED

turns on. The actuator should drive to between 20 and

80% open.

3. Remove the 5.6 kilo-ohm resistor and jumper T to T1.

The actuator should drive fully open.

4. Remove the jumper across T and T1. The actuator should

drive fully closed.

5. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

7. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

DCV MINIMUM AND MAXIMUM POSITION — To check

the DCV minimum and maximum position:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

ECONOMI$ER IV TROUBLESHOOTING COMPLE-

TION — This procedure is used to return the EconoMi$er IV

to operation. No troubleshooting or testing is done by perform-

ing the following procedure.

2. Connect a 9-v battery to AQ (positive node) and AQ1

(negative node). The DCV LED should turn on. The

actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to mid-

point. The actuator should drive to between 20 and 80%

open.

4. Turn the DCV Maximum Position potentiometer to fully

CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint.

The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer fully CW. The

actuator should drive fully open.

7. Remove the jumper from TR and N. The actuator should

drive fully closed.

8. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

SUPPLY-AIR INPUT — To check supply-air input:

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previous

setting.

4. Set minimum position, DCV set point, and exhaust

potentiometers to previous settings.

5. Remove 620-ohm resistor from terminals S_Rand +.

6. Remove 1.2 kilo-ohm checkout resistor from terminals

S_Oand +. If used, reconnect sensor from terminals S_Oand

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect

wires at T and T1.

10. Remove jumper from P to P1. Reconnect device at P and

P1.

11. Apply power (24 vac) to terminals TR and TR1.

1. Make sure EconoMi$er IV preparation procedure has

been performed.

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LEGEND

—

Contactor, Compressor

Capacitor

LSM

MCA

MTR

OFC

OFM

—

Limit Switch (Manual Reset)

Minimum Circuit Amps

Motor

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

Splice

CAP

Circuit Breaker

CLO

COMP

Compressor Lockout

Compressor Motor

Defrost Board

Defrost Thermostat

Equipment

Freeze Protection Thermostat

Heater Contactor

High-Pressure Switch

Heater Relay

Indoor-Fan Contactor

Indoor-Fan Motor

Outdoor-Fan Contactor

Outdoor-Fan Motor

Plug

DFT

EQUIP

FPT

Plug Assembly

Splice (Marked)

Quadruple Terminal

Supply Air Thermostat

Reversing Valve Solenoid

Transformer

Factory Wiring

SAT

RVS

TRAN

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

HPS

Field Splice

IFC

IFM

To indicate common potential only,

not to represent wiring

IFMOVL — Indoor-Fan Motor Overload Switch

Marked Wire

LPS

—

Low-Pressure Switch

Fig. 50 — Typical Unit Wiring Schematic (208/203-3-60 Unit Shown)

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Table 28 — Heating and Cooling Troubleshooting

PROBLEM

CAUSE

REMEDY

Compressor and Outdoor Fan

Will Not Start.

Power failure.

Fuse blown or circuit breaker tripped.

Defective thermostat, contactor, transformer, or

control relay.

Call power company.

Replace fuse or reset circuit breaker.

Replace component.

Insufficient line voltage.

Incorrect or faulty wiring.

Thermostat setting too high.

Determine cause and correct.

Check wiring diagram and rewire correctly.

Lower thermostat setting below room

temperature.

High-pressure switch tripped.

Low-pressure switch tripped.

Freeze-up protection thermostat tripped.

Faulty wiring or loose connections in compressor

circuit.

See problem ‘‘Excessive Head Pressure.’’

Check for leaks, repair, and recharge.

See problem ‘‘Suction Pressure Too Low.’’

Check wiring and repair or replace.

Compressor Will Not Start But

Outdoor Fan Runs.

Compressor motor burned out, seized, or internal Determine cause. Replace compressor.

overload open.

Defective overload.

Determine cause and replace.

One leg of 3-phase power dead.

Replace fuse or reset circuit breaker.

Determine cause.

Compressor Cycles (Other Than

Normally Satisfying Thermostat).

Refrigerant overcharge or undercharge.

Recover refrigerant, evacuate system, and

recharge to nameplate.

Defective compressor.

Replace and determine cause.

Determine cause and correct.

Determine cause and replace.

Replace thermostat.

Insufficient line voltage.

Blocked outdoor coil or dirty air filter.

Defective overload.

Defective thermostat.

Faulty outdoor-fan (cooling) or indoor-fan (heating) Replace.

motor or capacitor.

Restriction in refrigerant system.

Dirty air filter.

Locate restriction and remove.

Replace filter.

Compressor Operates Continuously.

Unit undersized for load.

Thermostat set too low.

Low refrigerant charge.

Leaking valves in compressor.

Air in system.

Decrease load or increase unit size.

Reset thermostat.

Locate leak, repair, and recharge.

Replace compressor.

Recover refrigerant, evacuate system, and

recharge.

Outdoor coil dirty or restricted.

Dirty air filter.

Clean coil or remove restriction.

Replace filter.

Excessive Head Pressure.

Dirty outdoor coil.

Clean coil.

Refrigerant overcharged.

Air in system.

Remove excess refrigerant.

Recover refrigerant, evacuate system, and

recharge.

Condensing air restricted or air short-cycling.

Low refrigerant charge.

Compressor valves leaking.

Restriction in liquid tube.

High heat load.

Compressor valves leaking.

Refrigerant overcharged.

Dirty air filter (cooling) or dirty outdoor coil

(heating).

Determine cause and correct.

Check for leaks, repair, and recharge.

Replace compressor.

Remove restriction.

Check for source and eliminate.

Replace compressor.

Head Pressure Too Low.

Excessive Suction Pressure.

Suction Pressure Too Low.

Recover excess refrigerant.

Replace filter or clean coil.

Low refrigerant charge.

Metering device or low side restricted

Insufficient indoor airflow (cooling mode).

Check for leaks, repair, and recharge.

Remove source of restriction.

Increase air quantity. Check filter and replace if

necessary.

Temperature too low in conditioned area.

Field-installed filter drier restricted.

Outdoor ambient temperature below 25 F.

Unit in economizer mode.

Reset thermostat.

Replace.

Install low-ambient kit.

Proper operation; no remedy necessary.

Compressor No. 2 Will Not Run.

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Table 29 — EconoMi$er IV Input/Output Logic

INPUTS

Enthalpy*

OUTPUTS

Compressor

Stage Stage

N Terminal†

Demand Control

Ventilation (DCV)

Y1 Y2

Occupied

Unoccupied

Outdoor

Return

Damper

Below set

High

Low

On On

On Off

Off Off

On On

On Off

Off Off

On On

On Off

Off Off

On On

On Off

Off Off

Off

Minimum position

Closed

(DCV LED Off)

(Free Cooling LED Off)

Low

High

Low

High

Modulating** (between min.

position and full-open)

Modulating** (between

closed and full-open)

(Free Cooling LED On)

Minimum position

Closed

Above set

(DCV LED On)

High

Modulating†† (between min. Modulating†† (between

position and DCV maximum) closed and DCV

maximum)

(Free Cooling LED Off)

Low

Modulating***

Modulating†††

(Free Cooling LED On)

***Modulation is based on the greater of DCV and supply-air sen-

sor signals, between minimum position and either maximum

position (DCV) or fully open (supply-air signal).

†††Modulation is based on the greater of DCV and supply-air sen-

sor signals, between closed and either maximum position (DCV)

or fully open (supply-air signal).

*For single enthalpy control, the module compares outdoor

enthalpy to the ABCD set point.

†Power at N terminal determines Occupied/Unoccupied setting:

24 vac (Occupied), no power (Unoccupied).

**Modulation is based on the supply-air sensor signal.

††Modulation is based on the DCV signal.

Fig. 51 — EconoMi$er IV Functional View

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INDEX

Access panels 18

Barometric flow capacity 20

Carrier Comfort Network 14

Charging chart, refrigerant 48, 49

Clearance 3, 6

Operating sequence

Cooling 45

EconoMi$er2 45-47

EconoMi$er IV 45

Heating 45

Outdoor air hood 14, 19

Outdoor air inlet screens 44

Cleaning 48

CO₂sensor

Configuration 25

Settings 23, 25

Compressor

Outdoor coil

Mounting 44

Cleaning 47

Rotation 44

Outdoor fan

Condensate drain

Adjustment 48

Cleaning 47

Physical data

Location

Potentiometer 22

Control circuit

Power supply

Wiring 12

Wiring

Wiring raceway 12

Convenience outlet 10, 11, 13

Defrost board 12, 13

Demand control ventilation 24

Dehumidification 25

Dimensions 2, 6

PremierLink controls 14-16

Pressure, drop

Electric heat 27

Return air 20

Outdoor air 20

Pre-start-up 44

Pressure switches

Ductwork

EconoMi$er2 18

Components 18

High pressure

Low pressure

Refrigerant

4 to 20 mA control 20

Wiring 20

Charge 5, 48, 49

Type

EconoMi$er IV 18-25

Components 18

Refrigerant service ports 44

Replacement parts 48

Return air filter 5, 44

Return air temperature sensor 22

Rigging unit 3, 4

Damper 24

Dry bulb changeover 21

Enthalpy changeover 22

Inputs and outputs 53

Troubleshooting 49, 50

Wiring 19

Roof curb

Assembly

Electrical connections

Dimensions

Electrical data 8-11

Connector package

Electric heat

Leveling tolerances

Enthalpy changeover set points 23

Factory-installed options 12-25

Convenience outlet 13

EconoMi$er2 18-20

EconoMi$er IV 18-25

Manual outdoor air damper 13

Novar controls 13

Weight

Safety considerations

Safety relief 45

Service 47-49

Service ports 44

Slab mount

Start-up 44-47

PremierLink™ controls 14-16

Filter

Start-up checklist CL-1

Supply-air temperature sensor 14, 21

Thermostat 12, 24

Troubleshooting 49-53

Ventilation 45

Cleaning 48

Installation 19

Size

Freeze protection thermostat 5, 48

Heat anticipator settings 12, 13

High flow valves 44

Weight

Corner

EconoMi$er IV 5, 6

Unit 4-6

High pressure switch 5, 48

Horizontal units

Wiring

Indoor air quality 14, 22

Indoor coil

4 to 20 mA control 20

EconoMi$er2 20

EconoMi$er IV 19

Cleaning 47

Indoor fan motor

Lubrication 48

Motor data 26

Power connections

PremierLink 16

Thermostat 12

Unit 51

Performance 28-43

Pulley adjustment 26

Pulley setting 5, 27

Speed

Low pressure switch 5, 48

Manual outdoor air damper 13

Mounting

Compressor 44

Unit

Novar controls 13

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

Catalog No. 04-53500019-01 Printed in U.S.A. Form 50TFQ-9SI Pg 54 9-05 Replaces: 50TFQ-7SI

Book 1

Tab 5a 5a

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START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.: __________________________________

DATE: ________________________________________

BUILDING LOCATION: _________________________

SERIAL NO.: ______________________________________

TECHNICIAN:_____________________________________

II. PRE-START-UP (insert checkmark in box as each item is completed)

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS

CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

CHECK THAT RETURN (INDOOR) AIR FILTERS ARE CLEAN AND IN PLACE

VERIFY THAT UNIT INSTALLATION IS LEVEL

CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS

CHECK PULLEY ALIGNMENT AND BELT TENSION PER INSTALLATION INSTRUCTIONS

VERIFY INSTALLATION OF ECONOMIZER HOOD (IF EQUIPPED)

III. START-UP:

ELECTRICAL

SUPPLY VOLTAGE

CIRCUIT 1 COMPRESSOR AMPS L1

CIRCUIT 2 COMPRESSOR AMPS L1

L1-L2

L2-L3

L3-L1

INDOOR-FAN AMPS

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR

PRESSURES (COOLING MODE)

REFRIGERANT SUCTION, CIRCUIT 1

REFRIGERANT SUCTION, CIRCUIT 2

REFRIGERANT DISCHARGE, CIRCUIT 1

REFRIGERANT DISCHARGE, CIRCUIT 2

PSIG

VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION (SIZE 012 ONLY)

VERIFY REFRIGERANT CHARGE USING COOLING CHARGING CHARTS ON PAGES 48 AND 49.

GENERAL

SET ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO MATCH JOB REQUIREMENTS

(IF EQUIPPED)

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

Book

Catalog No. 04-53500019-01

Printed in U.S.A.

Form 50TFQ-9SI

Pg CL-1

9-05

Replaces: 50TFQ-7SI

Tab

5a 5a

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