Carrier 48TJE008 014 User Manual

48TJD008-014

48TJE008-014

48TJF008-012

Single-Package Rooftop Heating/Cooling Units

Installation, Start-Up and

Service Instructions

CONTENTS

Page

Disconnect gas piping from unit when leak

testing at pressure greater than¹⁄2 psig. Pres-

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

sures greater than ⁄2 psig will cause gas

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

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

• ROOF CURB

• SLAB MOUNT

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

Step 3 — Install External Trap for

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 4 — Rig and Place Unit . . . . . . . . . . . . . . . . . . 2

• POSITIONING

valve damage resulting in hazardous con-

dition. If gas valve is subjected to pres-

sure greater than ¹⁄2 psig, it must be replaced

before use. When pressure testing ﬁeld-

supplied gas piping at pressures of ¹⁄2 psig

or less, a unit connected to such piping must

be isolated by manually closing the gas

valve(s).

Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . 8

Step 6 — Install Gas Piping . . . . . . . . . . . . . . . . . . . 8

Step 7 — Make Electrical Connections . . . . . . . . 8

• FIELD POWER SUPPLY

Before performing service or maintenance operations on

unit, turn off main power switch to unit. Electrical shock

could cause personal injury.

• FIELD CONTROL WIRING

• HEAT ANTICIPATOR SETTINGS

Step 8 — Adjust Factory-Installed Options . . . 11

• APOLLO CONTROL

• MANUAL OUTDOOR-AIR DAMPER

• OPTIONAL DURABLADE ECONOMIZER

• OPTIONAL PARABLADE ECONOMIZER

Step 9 — Adjust Evaporator-Fan Speed . . . . . . 16

INSTALLATION

Unit is shipped in the vertical discharge conﬁguration. To

convert to horizontal conﬁguration, remove screws from side

duct opening covers and remove covers. Using the same screws,

install covers on vertical duct openings with the insulation-

side down. Seals around duct openings must be tight. See

Fig. 1.

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23,24

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-30

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 31-36

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

Step 1 — Provide Unit Support

ROOF CURB — Assemble and install accessory roof curb

in accordance with instructions shipped with curb. See

Fig. 2. Install insulation, cant strips, rooﬁng felt, and counter

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

gas is to be routed through the curb, attach the accessory

thru-the-curb service connection plate to the roof curb in ac-

cordance with the accessory installation instructions. Con-

nection plate must be installed before unit is set in roof curb.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment

can be hazardous due to system pressure and electrical com-

ponents. Only trained and qualiﬁed service personnel should

install, repair, or service air-conditioning equipment.

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 per-

sonnel. When working on air-conditioning equipment, ob-

serve precautions in the literature, tags and labels attached

to the unit, and other safety precautions that may apply.

IMPORTANT: The gasketing of the unit to the roof

curb is critical for a watertight seal. Install gasket sup-

plied with the roof curb as shown in Fig. 2. Improp-

erly applied gasket can also result in air leaks and poor

unit performance.

Curb should be level. Unit leveling tolerances are shown

in Fig. 3. This is necessary for unit drain to function prop-

erly. Refer to Accessory Roof Curb Installation Instructions

for additional information as required.

Follow all safety codes. Wear safety glasses and work gloves.

Use quenching cloth for unbrazing operations. Have ﬁre ex-

tinguishers available for all brazing operations.

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

Book 1 PC 111 Catalog No. 564-934 Printed in U.S.A. Form 48TJ-13SI Pg 1 9-96 Replaces: 48TJ-10SI

Tab 1a 6a

CONNECTOR

ACCESSORY

PACKAGE

UNIT SIZE

48TJ

‘‘E’’

POWER

CONTROL

‘‘B’’

‘‘C’’

‘‘D’’ ALT DRAIN HOLE

GAS CONNECTION CONNECTION

CRBTMPWR00A100

⁄

4Љ NPT

⁄

4Љ NPT

⁄

Љ NPT

(THRU-THE-BOTTOM)

008-014 2Ј-8⁷⁄16Љ [827] 1Ј-10¹⁵⁄16Љ [583]

1³⁄4Љ [45]

CRBTMPWR00A200

(THRU-THE-BOTTOM)

⁄

1¹⁄4Љ NPT

⁄

2Љ NPT

UNIT SIZE

48TJ

ROOF CURB

‘‘A’’

ACCESSORY

1Ј-2Љ [356] CRRFCURB003A00

2Ј-0Љ [610] CRRFCURB004A00

008-014

NOTES:

1. Roof curb accessory is shipped unassembled.

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

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

curb).

6. Service clearance 4 ft on each side.

Direction of airﬂow.

8. Either accessory connector package can be used

with either roof curb.

Fig. 2 — Roof Curb Details

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B

0.5

B-C

A-C

1.0

Fig. 3 — Unit Leveling Tolerances

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

difference. A 4-in. trap is recommended.

Fig. 5 — External Trap Condensate Drain

Locate mechanical draft system ﬂue assembly at least

48 in. from any opening through which combustion prod-

ucts could enter the building, and at least 48 in. from an ad-

jacent building or combustible material. When unit is located

adjacent to public walkways, ﬂue assembly must be at least

7 ft above grade.

Flue vent discharge must have a minimum horizontal clear-

ance of 48 in. from electric and gas meters, gas regulators,

and gas relief equipment.

Flue gas can deteriorate building materials. Orient unit so

that ﬂue gas will not affect building materials.

Adequate combustion-air space must be provided for proper

operation of this equipment. Be sure that installation com-

plies with all local codes and Section 5.3, Air for Combus-

tion and Ventilation, NFGC (National Fuel Gas Code), ANSI

(American National Standards Institute) Z223.1-latest year

and addendum Z223.1A-latest year. In Canada, installation

must be in accordance with the CAN1. B149.1 and

CAN1.B149.2 installation codes for gas burning appliances.

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

Fig. 4 — Condensate Drain Pan

NOTES:

DIMENSIONS

‘‘B’’

MAX

1. Dimension in ( ) is in millimeters.

WEIGHT

UNIT

‘‘A’’

‘‘C’’

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. Weights include base unit without economizer. See Table 1 for economizer

weights.

in.

48TJD/TJE/TJF008

48TJD/TJE/TJF009

870 395 87.38 2219 40.25 1022 41.31 1050

880 399 87.38 2219 40.25 1022 41.31 1050

48TJD/TJE/TJF012 1035 469 87.38 2219 40.25 1022 49.31 1253

48TJD/TJE014 1050 476 87.38 2219 40.25 1022 49.31 1253

All panels must be in place when rigging.

Fig. 6 — Rigging Details

Table 1 — Physical Data

UNIT SIZE 48TJ

008D/E/F

009D/E/F

012D/E/F

014D/E

12¹⁄2

NOMINAL CAPACITY (tons)

7¹⁄2

8¹⁄2

OPERATING WEIGHT (lb)

Unit

Al/Al*

870

881

893

880

896

907

1035

1057

1080

1050

1077

1100

Al/Cu*

Cu/Cu*

Durablade Economizer

PARBLADE Economizer

Roof Curb

143

COMPRESSOR

Quantity

Oil (oz)

Reciprocating

Scroll

54 ea

50 ea

REFRIGERANT TYPE

Operating Charge (lb-oz)

Circuit 1

R-22

4-13

4-14

6-14

6-3

5-13

5-14

8-10

8- 6

Circuit 2

CONDENSER COIL

Rows...Fins/in.

Total Face Area (sq ft)

Enhanced Copper Tubes, Aluminum Lanced Fins

1...17

20.50

2...17

18.00

2...17

17.42

2...17

25.00

CONDENSER FAN

Nominal Cfm

Propeller Type

6500

7000

2...22

4...1100

600

7000

Quantity...Diameter (in.)

Motor Hp...Rpm

2...22

⁄

4...1100

600

⁄

4...1100

600

⁄

4...1100

600

Watts Input (Total)

EVAPORATOR COIL

Rows...Fins/in.

Total Face Area (sq ft)

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

3...15

8.0

3...15

8.0

3...15

10.0

4...15

11.1

EVAPORATOR FAN

Quantity...Size (in.)

Centrifugal Type

Std

Alt

1...15 x 15

Belt

1...15 x 15

—

1...15 x 15

Belt

1...15 x 15

Belt

Type Drive

Std

Alt

Belt

—

Belt

Nominal Cfm

Motor Hp

3000

—

3400

—

4000

—

5000

—

Std

Alt

—

Maximum Continuous Bhp

Motor Frame Size

Std

Alt

2.40

—

2.40

4.20

—

2.90

5.25

Std

Alt

—

Nominal Rpm High/Low

Fan Rpm Range

—

Std

Alt

590-840

685-935

Ball

685-935

—

Ball

2100

2.8/3.8

685-935

835-1085

Ball

860-1080

900-1260

Ball

Motor Bearing Type

Maximum Allowable Rpm

2100

2.4/3.4

2100

2.8/3.8

2100

4.0/5.0

Motor Pulley Pitch Diameter Min/Max (in.) Std

Alt

2.8/3.8

—

3.4/4.4

3.1/4.1

Nominal Motor Shaft Diameter (in.)

Std

Alt

Std

Alt

⁄

—

Fan Pulley Pitch Diameter (in.)

7.0

8.0

7.0

—

7.0

5.9

Nominal Fan Shaft Diameter (in.)

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

—

Std

Alt

1...A...48

1...A...51

—

1...A...57

1...BX...46

Pulley Center Line Distance (in.)

Std

Alt

16.75-19.25

15.85-17.50

16.75-19.25

—

685

—

15.85-17.50

Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full Turns

From Closed Position

Std

Alt

Std

Alt

Factory Setting

Std

Alt

Factory Speed Setting (rpm)

Std

Alt

590

685

835

860

960

Fan Shaft Diameter at Pulley (in.)

(See legend and notes on page 6.)

Table 1 — Physical Data (cont)

UNIT SIZE 48TJ

008D/E/F

009D/E/F

012D/E/F

014D/E

FURNACE SECTION

Rollout Switch Cutout

Temp (F)

195

Burner Oriﬁce Diameter

(in. ...drill size)

Natural Gas

Std

Alt

.120...31

.096...41

.120...31

.096...41

.120...31/.120...31/.129...30 .120...31/.129...30

.096...41/.096...41/.102...38 .096...41/.102...38

Liquid Propane

Pilot Oriﬁce Diameter

(Quantity) in. ...drill size

Natural Gas

Std

Alt

—

Liquid Propane

Thermostat Heat Anticipator

Setting (amps)

208/230 v Stage 1

Stage 2

.14

.20

.14

.20

.14

.20

.14

.20

.14

.20

.14

.20

.14

.20

.14

.20

460 v Stage 1

Stage 2

Gas Input (Btuh) Stage 1

Stage 2

125,000/120,000/180,000 125,000/120,000/180,000 120,000/180,000/200,000 180,000/200,000

—/180,000/224,000

180,000/224,000/250,000 224,000/250,000

Efficiency (Steady

State) (%)

Temperature Rise Range

Manifold Pressure (in. wg)

Natural Gas

20-50/35-65/45-75

35-65/35-65/40-70

35-65/40-70

Std

Alt

3.5

Liquid Propane

Gas Valve Quantity

Field Gas Connection

Size (in.)

⁄

4/³⁄4

⁄

2/³⁄4/³⁄4

⁄

2/³⁄4/³⁄4

⁄

4/³⁄4/³⁄4

HIGH-PRESSURE SWITCH (psig)†

Standard Compressor

Internal Relief (Differential)

Cutout

450 ± 50

500 ± 50

428

320

428

320

Reset (Auto.)

LOW-PRESSURE SWITCH (psig)†

Cutout

Reset (Auto.)

7 ± 3

22 ± 7

FREEZE PROTECTION

THERMOSTAT (F)†

Opens

30 ± 5

45 ± 5

Closes

OUTDOOR-AIR INLET SCREENS

Quantity...Size (in.)

Cleanable

1...20 x 25 x 1

1...16 x 25 x 1

RETURN-AIR FILTERS

Quantity...Size (in.)

Throwaway

4...16 x 20 x 2

4...20 x 20 x 2

LEGEND

*Evaporator coil ﬁn material/condenser coil ﬁn material.

†Requires an optional or accessory controls kit.

Bhp

—

Aluminum

Brake Horsepower

Copper

NOTE: The 48TJ008-014 units have a loss-of-charge/low-pressure

switch (accessory) located in the liquid line.

CONNECTION SIZES

STANDARD CORNER CORNER CORNER CORNER

UNIT

WEIGHT WEIGHT WEIGHT WEIGHT

(A) (B) (C) (D)

‘‘H’’

‘‘J’’

‘‘K’’

‘‘L’’

UNIT

48TJ

1³⁄8Љ Dia [35] Field Power Supply Hole

2-¹⁄2Љ Dia [64] Power Supply Knock-Out

1³⁄4Љ Dia [44] Charging Port Hole

WEIGHT

Lb Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm

ft-in. mm ft-in. mm

86 161 73 239 109 280 127 1-2⁷⁄8 378 3-5⁵⁄16 1050 2-9¹¹⁄16 856 2- 2⁷⁄16 672

87 163 74 242 110 284 129 3-3⁷⁄8 1013 3-5⁵⁄16 1050 2-9¹¹⁄16 856 2- 2⁷⁄16 672

D/E/F008

D/E/F009

870 395 189

880 399 191

⁄

8Љ Dia [22] Field Control Wiring Hole

4Љ—14 NPT Condensate Drain

⁄

D/E/F012 1035 469 225 102 192 87 285 129 333 151 2-5⁷⁄8 759 4-1⁵⁄16 1253 3-0³⁄8

D/E014

1050 476 228 103 195 88 289 131 338 153 1-2⁷⁄8 378 4-1⁵⁄16 1253 3-0³⁄8

924 2-10⁷⁄16 875

⁄

2Љ—14 NPT Gas Connection 48TJD008 & 009

4Љ—14 NPT Gas Connection 48TJE/F008 & 009;

48TJD/E012,014, 48TJF012

2Љ Dia [51] Power Supply Knock-Out

NOTES:

1. Dimensions in [ ] are in millimeters.

Center of gravity.

Direction of airﬂow.

4. On vertical discharge units, ductwork to be attached to accessory roof curb only. For

horizontal discharge units ﬁeld-supplied ﬂanges should be attached to horizontal dis-

charge openings, and all ductwork should be attached to the ﬂanges.

5. Minimum clearance (local codes or jurisdiction may prevail):

a. Between unit (ﬂue side) and combustible surfaces, 48 inches.

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

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

c. Condenser coil, for proper airﬂow, 36 in. one side, 12 in. the other. The side get-

ting the greater clearance is optional.

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

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

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

g. Between unit and block or concrete walls and other grounded surfaces, control

box side, 42 in. per NEC.

h. Horizontal supply and return end, 0 inches.

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

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

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

roof covering material if set on base rail.

8. The vertical center of gravity is 1Ј-7Љ [483] up from the bottom of the base rail. Hori-

zontal center of gravity is shown.

BOTTOM POWER CHART, THESE HOLES

REQUIRED FOR USE WITH ACCESSORY

PACKAGES — CRBTMPWR001A00,

OR CRBTMPWR002A00

THREADED

CONDUIT SIZE

REQUIRED HOLE

SIZES (MAX)

WIRE SIZE

⁄

24 V

Power*

⁄8Љ [22.2]

4؆

1¹⁄8Љ [28.4]

1³⁄4Љ [44.4]

1¹⁄4

*Select either ⁄

4Љ or 1¹⁄4Љ for power, depending on wire size.

Fig. 7 — Base Unit Dimensions

Step 5 — Install Flue Hood — Flue hood is shipped

screwed to the burner compartment access panel. Remove

from shipping location and, using screws provided, install

ﬂue hood and screen in location shown in Fig. 8.

Step 6 — Install Gas Piping — Unit is equipped for

use with type of gas shown on nameplate. Refer to local build-

ing codes, or in the absence of local codes, to ANSI Z223.1-

latest year and addendum Z223.1A-latest year entitled

National Fuel Gas Code. In Canada, installation must be in

accordance with the CAN1.B149.1 and CAN1.B149.2 in-

stallation codes for gas burning appliances.

For natural gas applications, gas pressure at unit gas con-

nection must not be less than 4.0 in. wg (5.0 in. wg in high

heat units) or greater than 13.0 in. wg while unit is operat-

ing. For liquid propane applications, the gas pressure must

not be less than 5.0 in. wg or greater than 13.0 in. wg at the

unit connection.

LEGEND

SPACING OF SUPPORTS

NFGC

—

National Fuel Gas Code

STEEL PIPE

*Field supplied.

NOMINAL

DIMENSION

DIAMETER

(feet)

NOTE: Follow all local codes.

(in.)

Size gas supply piping for 0.5 in. wg maximum pres-

sure drop. Do not use supply pipe smaller than unit gas

connection.

⁄2

⁄

or 1

1¹⁄4 or larger

Support gas piping as shown in the table in Fig. 9. For

example, a ³⁄4-in. gas pipe must have one ﬁeld-fabricated sup-

port beam every 8 ft. Therefore, an 18-ft long gas pipe would

have a minimum of 2 support beams, and a 48-ft long pipe

would have a minimum of 6 support beams.

See Fig. 9 for typical pipe guide and locations of external

manual gas shutoff valve.

Fig. 9 — Gas Piping Guide (With Accessory

Thru-the-Curb Service Connections)

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

are factory wired for the voltage shown on the nameplate. If

the 208/230-v unit is to be connected to a 208-v power sup-

ply, the transformer must be rewired by moving the black

wire from the 230-v red wire on the transformer and con-

necting it to the 200-v blue wire from the transformer. The

red wire then must be insulated.

Step 7 — Make Electrical Connections

Refer to unit label diagram for additional information. Pig-

tails are provided for ﬁeld service.

Unit cabinet must have an uninterrupted, unbroken elec-

trical ground to minimize the possibility of personal in-

jury if an electrical fault should occur. This ground may

consist of electrical wire connected to unit ground lug

in control compartment, or conduit approved for elec-

trical ground when installed in accordance with NEC

(National Electrical Code), ANSI/NFPA (National Fire

Protection Association), latest edition, and local elec-

trical codes. Do not use gas piping as an electrical ground.

Failure to follow this warning could result in the in-

staller being liable for personal injury of others.

When installing units, provide a disconnect per NEC. Use

copper conductors only when splice connectors are used.

All ﬁeld wiring must comply with NEC and local require-

ments. In Canada, electrical connections must be in accor-

dance with CSA (Canadian Standards Association) C22.1

Canadian Electrical Code Part One.

Install conduit through side panel openings indicated in

Fig. 7. Route power lines through connector to terminal con-

nections as shown in Fig. 10.

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

anced within 2% and the current within 10%. Use the for-

mula shown in Table 2, Note 2 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 operation would in-

validate any applicable Carrier warranty.

NOTE: If ﬁeld-installed thru-the-bottom connections are used,

refer to the accessory installation instructions for power wir-

ing. Refer to Fig. 7 for drilling holes in basepan.

FIELD CONTROL WIRING — Install a Carrier-approved

accessory thermostat assembly according to installation in-

structions included with the accessory. Locate thermostat as-

sembly on a solid wall in the conditioned space to sense av-

erage temperature in accordance with thermostat installation

instructions.

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

can Wire Gage) insulated wire (35 C minimum). For 50 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 con-

nected to the thermostat and will require a junction box and

splice at the thermostat.

Fig. 8 — Flue Hood Details

Route thermostat cable or equivalent single leads of col-

ored wire from subbase terminals to low-voltage connec-

tions on unit (shown in Fig. 11) as described in Steps 1 - 4

below.

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

curb service plate connection is used, route wire through

connection plate.

box. See Fig. 12. The raceway provides the UL-required

(Underwriters’Laboratories) clearance between high- and

low-voltage wiring.

4. Connect thermostat wires to screw terminals on low-

voltage connection board.

HEAT ANTICIPATOR SETTINGS — Set heat anticipator

settings at .14 amp for the ﬁrst stage and .20 amp for second-

stage heating.

2. Pass control wires through the hole provided on unit

(see connection D in Connection Sizes table in Fig. 7).

3. Feed wires through the raceway built into the corner post

to the 24-v barrier located on the left side of the control

Table 2 — Electrical Data

VOLTAGE

RANGE

COMPR

(ea)

OFM

(ea)

COMBUSTION

FAN MOTOR

DISCONNECT

SIZE*

NOMINAL

VOLTAGE

(60 Hz)

IFM

POWER SUPPLY

MCA

UNIT

48TJ

IFM

TYPE

Min Max RLA LRA Hp FLA FLA

FLA

MOCP† FLA

LRA

208/230

Std

187 254 13.6

73.4

37.7

31.0

92.0

46.0

44.0

⁄

1.4

0.8

1.4

0.8

5.8

2.6

5.8

2.6

.57

39.2/39.2

18.0

45/45

41/41 194/194

(3 phase)

008

460

(3 phase)

414 508

518 632

6.2

4.9

.30

.57

.30

(7¹⁄2 Tons)

575

(3 phase)

14.2

208/230

(3 phase)

187 254 15.8

44.2/44.2

20.7

50/50

46/46 231/231

009

460

(3 phase)

414 508

518 632

7.4

5.9

116

107

(8¹⁄2 Tons)

575

(3 phase)

16.5

Std

Alt

5.8

7.5

2.6

3.4

2.6

3.4

10.6

15.0

4.8

7.4

4.8

7.4

48.9/48.9

50.6/50.6

23.4

60/60

51/51 267/267

53/53 286/286

208/230

187 254 17.9 110.0

⁄

1.4

0.8

1.4

0.8

.57

.30

.57

.30

(3 phase)

Std

Alt

134

173

107

139

012

460

(3 phase)

414 508

518 632

8.6

6.4

55.0

44.0

(10 Tons)

24.2

Std

Alt

17.6

575

(3 phase)

18.2

Std

Alt

65.2/65.2

69.6/69.6

29.6

80/80

68/68 383/383

73/73 406/406

208/230

(3 phase)

187 254 23.0 146.0

Std

Alt

192

203

154

163

014

460

414 508 10.4

518 632 8.3

73.0

58.4

(12¹⁄2 Tons) (3 phase)

32.2

Std

Alt

23.6

575

(3 phase)

25.7

LEGEND

EXAMPLE: Supply voltage is 460-3-60.

FLA

—

Full Load Amps

AB = 452 v

BC = 464 v

AC = 455 v

HACR

IFM

Heating, Air Conditioning and Refrigeration

Indoor (Evaporator) Fan Motor

Locked Rotor Amps

LRA

MCA

MOCP

NEC

OFM

RLA

452 + 464 + 455

Minimum Circuit Amps

Average Voltage =

Maximum Overcurrent Protection

National Electrical Code

1371

Outdoor (Condenser) Fan Motor

Rated Load Amps

Underwriters’ Laboratories

457

*Used to determine minimum disconnect size per NEC.

†Fuse or HACR circuit breaker.

NOTE: The 575-v 48TJ008-014 units are UL, Canada, only.

Determine maximum deviation from average voltage.

(AB) 457 - 452 = 5 v

(BC) 464 - 457 = 7 v

(AC) 457 - 455 = 2 v

Maximum deviation is 7 v.

Determine percent voltage imbalance.

NOTES:

% Voltage Imbalance = 100 x

457

1. In compliance with NEC requirements for multimotor and combi-

nation load equipment (refer to NEC Articles 430 and 440), the

overcurrent protective device for the unit shall be fuse or HACR

breaker. Canadian units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage

= 1.53%

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

maximum allowable 2%.

Never operate a motor where a phase imbalance in supply volt-

age is greater than 2%. Use the following formula to determine

the percent voltage imbalance.

IMPORTANT: If the supply voltage phase imbalance is

more than 2%, contact your local electric utility company

immediately.

% Voltage Imbalance

max voltage deviation from average voltage

= 100 x

average voltage

LEGEND

—

Contactor

COMPS

IFC

Compressors

Indoor (Evaporator) Fan

Contactor

National Electrical Code

Terminal Block

NEC

—

Terminal Block Connection

Splice Connection

(Factory Supplied)

Field Wiring

Factory Wiring

Fig. 10 — Power Wiring Connections

INTEGRATED

GAS UNIT

CONTROLLER

(IGC)

UNIT

CONNECTION

BOARD

LEGEND

AHA

—

Adjustable Heat Anticipator

Cooling Compensator

Thermostat-Cooling

Thermostat-Heating

Field Wiring

Factory Wiring

Fig. 11 — Low-Voltage Connections

RACEWAY

Fig. 12 — Field Control Wiring Raceway

Step 8 — Adjust Factory-Installed Options

APOLLO CONTROL — The optional Apollo control is used

to actively monitor all modes of operation as well as indoor

(evaporator) fan status, ﬁlter status, and indoor-air quality.

The Apollo control is designed to work with Carrier TEMP

and VVT௡ systems.

OUTDOOR

AIR OPENING

PANEL

The thermostat must be wired to the Apollo control before

starting the unit. Refer to the Apollo control installation in-

structions for information on installing the thermostat. See

Fig. 13 for Apollo location.

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 quantity of ventilation required for building.

Record amount for use in Step 8.

2. Remove ﬁlter access panel by raising panel and swing-

ing panel outward. Panel is now disengaged from track

and can be removed. No tools are required to remove

the ﬁlter access panel. Remove outdoor-air opening panel.

Save panels and screws. See Fig. 14.

Fig. 14 — Damper Panel with Manual

Outdoor-Air Damper Installed

3. Separate hood and screen from basepan by removing the

screws and brackets securing them. Save all screws and

discard brackets.

4. Replace outdoor air opening panel with screws saved

from Step 2.

5. Place hood on front of outdoor-air opening panel. See

Fig. 15 for hood details. Secure top of hood with the

6 screws removed in Step 3. See Fig. 16.

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

of the manual outdoor-air damper.

7. Align screw holes on hood with screw holes on side of

manual outdoor-air damper. See Fig. 15 and 16. Secure

hood with 8 screws from Step 6.

8. Adjust minimum position setting of the damper blade

by adjusting the manual outdoor-air adjustment screws

on the front of the damper blade. See Fig. 14. Slide blade

vertically until it is in the appropriate position deter-

mined by Fig. 17. Tighten screws.

WIRING TO

APOLLO

CONTROL

WIRING

THERMOSTAT CONTROL

Fig. 15 — Outdoor-Air Hood Details

HOOD

NOT

SHOWN)

Fig. 13 — Apollo Control Factory-Installed

in Typical Unit

Fig. 16 — Damper with Hood Attached

b. Rotate the barometric relief damper hinge

90 degrees. Barometric relief damper should open ver-

tically to operate properly.

c. Install horizontal discharge block-off plate over the

opening on the access panel. (Block-off plate MUST

be installed before installing hood assembly.) See

Fig. 23.

7. Insert economizer plug into economizer harness. Re-

move tape from barometric relief damper. See Fig. 21.

8. If ventilation air is not required, proceed to Step 9. If

ventilation air is required, determine the minimum po-

sition setting for required airﬂow. See Fig. 24. Adjust

minimum position setting by adjusting the screws on the

position setting bracket. See Fig. 25. Slide bracket until

the top screw is in the position determined by

Fig. 24. Tighten screws.

9. Remove tape from outdoor-air thermostat (OAT). Fas-

ten OAT to inside of hood using screws and speed clips

provided. See Fig. 26. Make sure OAT terminals are po-

sitioned up.

Fig. 17 — Position Setting

10. Replace outdoor-air opening panel using screws from

Step 2. Replace ﬁlter access panel. Ensure the ﬁlter ac-

cess panel slides along the tracks and is securely

engaged.

11. Fasten hood top and side plate assembly to outdoor-air

opening panel with screws provided.

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

Insert screens. Secure screens to hood using the screws.

See Fig. 16.

10. Replace ﬁlter access panel. Ensure ﬁlter access panel

slides along the tracks and is securely engaged.

12. Place knob supplied with economizer on OAT. See

Fig. 26. Set for 3° F below indoor room thermostat set-

ting. If accessory enthalpy control (EC) is used in place

of OAT, see instructions shipped with EC for installa-

tion and adjustment. See Fig. 26.

OPTIONAL DURABLADE ECONOMIZER — The op-

tional economizer hood assembly is packaged and shipped

in the ﬁlter section. Damper blades and control boards are

installed at the factory and the economizer is shipped in the

vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with

the air hood package. If unit is to be used for vertical dis-

charge application, discard this plate.

13. Connect OAT per Fig. 27.

14. Slide outdoor-air inlet screens into screen track on hood

side plate. While holding screens in place, fasten screen

retainer to hood using screws provided.

Assembly

NOTE: Refer to Fig. 28 for Durablade economizer baromet-

ric relief damper characteristics.

1. Determine if ventilation air is required in building. If

so, determine the minimum amount to be supplied by

each unit and record quantity of ventilation air needed

for use in Step 8.

2. Remove ﬁlter access panel by raising panel and swing-

ing panel outward. Panel is now disengaged from track

and can be removed. No tools are required to remove

ﬁlter access panel. Remove outdoor-air opening panel.

Save panels and screws. See Fig. 18. Remove optional

economizer and outdoor-air damper hood package from

ﬁlter section.

3. Assemble outdoor-air hood top and side plates as shown

in Fig. 19. Install seal strips on hood top and sides. Put

aside screen retainer and retainer screw for later assem-

bly. Do not attach hood to unit at this time.

4. On 012 and 014 units, install vertical discharge block-

off plate over duct openings. See Fig. 20.

5. Slide economizer into unit and secure with screws. See

Fig. 21.

NOTE: Be sure to engage rear economizer ﬂange under

tabs in vertical return-air opening.

6. To convert to horizontal discharge application:

a. Rotate the economizer 90 degrees until the econo-

mizer motor faces the condenser section (see

Fig. 22).

OUTDOOR-AIR

OPENING PANEL

FILTER ACCESS

PANEL

Fig. 18 — Access Panel Locations

ECONOMIZER

CONTROL BOARD

ECONOMIZER

PLUG

ECONOMIZER

MOTOR

TOP

SCREW

Fig. 21 — Durablade Economizer Installed in Unit

ECONOMIZER CONTROL BOARD

ECONOMIZER MOTOR

Fig. 19 — Outdoor-Air Hood Details

POSITION SETTING BRACKET

Fig. 22 — Horizontal Durablade Economizer

Installation (90 Degree Rotation)

Fig. 20 — Vertical Discharge Block-Off Plate

(Sizes 120,150 only)

BLOCK-OFF PLATE

Fig. 23 — Horizontal Discharge Block-Off Plate

Example:

Given —

Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . 0.1 in. wg

Outdoor Airﬂow . . . . . . . . . . . . . . . . . . . . . . . . 1100 cfm

Determine —

Setting = 6Љ

Fig. 24 — Durablade Economizer Damper

Minimum Position Setting

Fig. 25 — Durablade Economizer Minimum

Position Damper Setting

97-3672

REV

Fig. 26 — Outdoor-Air Thermostat/

Enthalpy Control Installation

Fig. 27 — Wiring Connections for

Outdoor-Air Thermostat

dampers should be fully closed. Turn the potentiom-

eter gradually counterclockwise until the desired po-

sition is reached.

c. Connect T and T1 to the 24 v power supply.

d. After installation is complete, calculate the mini-

mum airﬂow across the economizer. To calculate the

minimum airﬂow, the following data is needed: total

cfm (cfm₃), temperature of the total cfm (T₃), tem-

perature of the return air (T₁), and temperature of the

entering outside air (T₂). Cfm₁is the return air cfm,

which will be the minimum airﬂow.

Insert the data into the following equations:

T₁(cfm₁) + T₂(cfm₂)

= T₃

cfm₃

cfm₂= (cfm₃– cfm₁)

Therefore:

T₁(cfm₁) + T₂(cfm₃– cfm₁)

= T₃

cfm₃

Use this equation to determine cfm₁, which is the mini-

mum airﬂow across the economizer.

(T₃– T₂) cfm₃

cfm₁=

Fig. 28 — Durablade Economizer Barometric Relief

Damper Characteristics

(T₁– T₂)

If cfm₁does not match the desired minimum airﬂow

from Step 1, re-adjust the minimum position setting

screw.

OPTIONAL PARABLADE ECONOMIZER — The op-

tional PARABLADE economizer hood assembly is pack-

aged and shipped in the ﬁlter section. Damper blades and

control boards are installed at the factory and the econo-

mizer is shipped in the vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with

the air hood package. The PARABLADE economizer can

only be used for vertical discharge applications. Discard this

plate.

8. Determine the enthalpy changeover set point from

Fig. 30. The enthalpy changeover set point should be

set to return the outdoor air damper to the minimum po-

sition when enthalpy rises above the set point. The set-

tings are A, B, C, and D. Set the enthalpy changeover

per the setting in Fig. 30.

9. Replace outdoor-air opening panel using screws from

Step 2. Replace ﬁlter access panel. Ensure the ﬁlter ac-

cess panel slides along the tracks and is securely en-

gaged. See Fig. 31.

Assembly

1. Determine if ventilation air is required in building. If

so, determine the minimum amount to be supplied by

each unit and record quantity of ventilation air needed

for use in Step 7.

10. Fasten hood top and side plate assembly (Fig. 32) to

outdoor-air opening panel with screws provided.

2. Remove ﬁlter access panel by raising panel and swing-

ing panel outward. Panel is now disengaged from track

and can be removed. No tools are required to remove

ﬁlter access panel. Remove outdoor-air opening panel.

See Fig. 18. Save panels and screws. Remove optional

economizer so the outdoor-air damper hood package can

be removed from the ﬁlter section.

11. Slide outdoor-air inlet screens into screen track on hood

side plate. While holding screens in place, fasten screen-

retainer to hood using screws provided. See Fig. 33.

ECONOMIZER CONTROL

MODULE/DAMPER ACTUATOR

3. Assemble outdoor-air hood top and side plates as shown

in Fig. 19. Install seal strips on hood top and sides. Put

aside screen retainer and retainer screw for later assem-

bly. Do not attach hood to unit at this time.

4. On 012 and 014 units, install vertical discharge block-

off plate over duct openings. See Fig. 20.

5. Slide economizer into unit and secure with screws. See

Fig. 29.

NOTE: Be sure to engage rear economizer ﬂange under

tabs in vertical return-air opening.

6. Insert economizer plug into economizer harness. Re-

move tape from barometric relief damper. See Fig. 29.

7. If ventilation air is not required, proceed to Step 8. If

ventilation air is required, perform the following:

a. Make sure the factory-installed jumper is in place across

terminals P and P1 on the economizer logic module.

T and T1 should be disconnected during adjustment.

b. The 2 potentiometers with slots for adjustment are

located on the face of the economizer logic module.

Turn the lower potentiometer fully clockwise. The

WIRING

ENTHALPY

SENSOR

BAROMETRIC

HARNESS

RELIEF DAMPER

Fig. 29 — PARABLADE Economizer Installed in Unit

CONTROL POINT

F (C) (APPROX)

AT 50% RH

CONTROL

CURVE

73 [23]

70 [21]

67 [19]

63 [17]

Fig. 33 — Filter Installed on Outdoor-Air Hood

Step 9 — Adjust Evaporator-Fan Speed — Ad-

just evaporator-fan speed to meet jobsite conditions.

Table 3 shows fan rpm at motor pulley settings, Table 4

shows motor efficiencies and Table 5 gives accessory static

pressure drops. Table 6 shows motor performance. Refer to

Tables 7-14 to determine fan speed settings. Fan motor pul-

leys are factory set for speed shown in Table 1.

To change fan speed:

1. Shut off unit power supply.

2. Loosen belt by loosening fan motor mounting plate nuts

(see Fig. 34 and 35).

—

Relative Humidity

Fig. 30 — Enthalpy Settings for

PARABLADE Economizer

3. Loosen movable pulley ﬂange setscrew (see Fig. 36).

4. Screw movable ﬂange toward ﬁxed ﬂange to increase speed

and away from ﬁxed ﬂange to decrease speed. Increasing

fan speed increases load on motor. Do not exceed maxi-

mum speed speciﬁed in Table 1.

5. Set movable ﬂange at nearest keyway of pulley hub and

tighten setscrew (see Table 1 for speed change for each

full turn of pulley ﬂange).

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft.

3. Make angular alignment by loosening motor from mount-

ing plate.

To adjust belt tension (see Fig. 34 and 35):

1. Loosen fan motor mounting plate nuts.

Fig. 31 — Panels Reinstalled on Unit

2. Units 008,009 — Slide motor mounting plate away from

fan scroll for proper belt tension (¹⁄2-in. deﬂection with

one ﬁnger) and tighten mounting nuts (see Fig. 34).

Units 012,014 — Slide motor mounting plate downward

to tighten belt tension. Secure motor mounting plate nuts.

See Fig. 35.

3. Adjust bolt and nut on mounting plate to secure motor in

ﬁxed position.

Fig. 32 — Outdoor-Air Hood Installed on Unit

MOTOR MOUNTING

PLATE NUTS

Fig. 34 — Typical Belt-Drive Motor Mounting

for Sizes 008,009

Fig. 36 — Evaporator-Fan Pulley Adjustment

Fig. 35 — Typical Belt-Drive Motor Mounting

for Sizes 012,014

Table 3 — Fan Rpm at Motor Pulley Settings*

MOTOR PULLEY TURNS OPEN

UNIT

48TJ

⁄

1¹⁄2

765

2¹⁄2

715

810

960

970

1100

3¹⁄2

665

760

910

925

1045

4¹⁄2

615

710

860

880

990

5¹⁄2

—

900

008†

008**

009†

012†

012††

014†

014††

840

815

910

790

885

1035

1185

740

835

985

990

1130

690

785

935

950

1075

640

735

885

905

1015

590

685

835

860

960

935

860

—

935

910

860

—

935

910

860

—

1085

1080

1260

1060

1220

1010

1015

1155

—

930

*Approximate rpm shown.

†Indicates standard motor and drive.

**Indicates alternate drive.

††Indicates alternate motor and drive.

Table 4 — Evaporator-Fan Motor Efficiency

MOTOR

EFFICIENCY (%)

48TJD/TJE/TJF008,009

48TJD/TJE/TJF012 (Std)

48TJD/TJE/TJF012 (Alt)

48TJD/TJE014 (Std)

48TJD/TJE014 (Alt)

NOTE: Convert watts to bhp using the following formula:

watts input x motor efficiency

bhp =

746

Table 5 — Economizer Static Pressure Drop (in. wg)

CFM

UNIT

48TJ

2200

.02

2500

.02

3000

.03

3500

.04

4000

.05

4500

.06

5000

.07

5500

.08

6000

.09

Durablade Economizer

PARABLADE Economizer

.21

.25

.35

.49

.61

—

Table 6 — Motor Data

MAXIMUM

CONTINUOUS

BHP*

MAXIMUM

OPERATING

WATTS*

UNIT

48TJ

EVAPORATOR-

FAN MOTOR

UNIT

VOLTAGE

MAXIMUM

AMP DRAW

208/230

460

6.1

2.7

6.1

2.7

6.1

2.7

7.9

3.6

11.1

5.0

15.0

7.4

008

009

Std

Alt

2.40

2.90

4.20

5.25

2120

2615

3775

4400

575

208/230

460

575

208/230

460

575

012

014

208/230

460

575

208/230

460

Std

Alt

575

208/230

460

575

LEGEND

Brake Horsepower

Bhp

—

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

motors can be utilized with conﬁdence. Using your fan motors up to the ratings shown in this table will not result

in nuisance tripping or premature motor failure. Unit warranty will not be affected.

Table 7 — Fan Performance, 48TJ008 — Vertical Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

2200

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

506

514

521

536

551

559

567

582

598

614

630

646

662

679

695

712

729

745

754

0.52

0.55

0.57

0.63

0.69

0.72

0.75

0.83

0.90

0.98

1.07

1.16

1.26

1.36

1.47

1.59

1.71

1.84

1.91

586

593

600

613

626

634

641

655

670

684

699

714

729

744

759

774

790

805

813

0.72

0.76

0.79

0.85

0.93

0.97

1.00

1.08

1.17

1.25

1.35

1.45

1.55

1.66

1.78

1.90

2.03

2.17

2.24

656

662

668

680

693

700

706

719

732

745

759

773

787

801

816

830

845

860

868

0.95

0.99

1.02

1.09

1.17

1.21

1.25

1.34

1.43

1.53

1.63

1.74

1.86

1.98

2.10

2.23

2.37

2.52

2.59

718

724

730

741

753

759

764

776

789

802

815

828

841

854

867

881

895

909

917

1.18

1.22

1.26

1.34

1.43

1.48

1.52

1.61

1.71

1.81

1.92

2.04

2.16

2.29

2.42

2.56

2.71

2.87

2.95

776

781

786

796

808

814

819

831

842

854

866

878

891

904

917

930

943

956

963

1.43

1.78

1.50

1.59

1.69

1.74

1.79

1.89

2.00

2.11

2.23

2.35

2.48

2.61

2.75

2.90

3.05

3.22

3.30

838

841

843

849

859

864

869

880

892

903

915

926

938

950

963

976

988

—

1.78

1.81

1.83

1.88

1.96

2.01

2.06

2.17

2.29

2.42

2.54

2.67

2.81

2.95

3.10

3.25

3.41

—

898

902

905

910

912

915

918

927

938

949

961

972

983

995

1007

—

2.21

2.25

2.28

2.31

2.34

2.37

2.47

2.58

2.71

2.85

3.00

3.14

3.30

3.45

—

935

939

943

952

963

968

973

976

983

993

1003

1015

1026

—

2.58

2.60

2.62

2.74

2.81

2.84

2.92

3.03

3.17

3.32

3.47

—

LEGEND

Brake Horsepower Input to Fan

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

6. Maximum continuous bhp is 2.4. Extensive motor and electrical

testing on these units ensures that the full range of the motor can

be utilized with conﬁdence. Using your fan motors up to the rat-

ings shown will not result in nuisance tripping or premature motor

failure. Unit warranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

indicates alternate drive required.

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

Carrier representative to verify.

indicates ﬁeld-supplied motor and drive required.

8. Interpolation is permissible. Do not extrapolate.

4. Standard drive range is 590 to 840 rpm. Alternate drive range is

685 to 935 rpm. All other rpms require a ﬁeld-supplied drive.

Table 8 — Fan Performance, 48TJ009 — Vertical Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

Rpm

Bhp

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

4300

559

567

582

598

614

630

646

662

679

695

712

729

745

754

762

779

796

813

830

839

847

0.72

0.75

0.83

0.90

0.98

1.07

1.16

1.26

1.36

1.47

1.59

1.71

1.84

1.91

1.98

2.12

2.27

2.42

2.59

2.68

2.76

634

641

655

670

684

690

714

729

744

759

774

790

805

813

821

836

852

868

884

890

900

0.97

1.00

1.08

1.17

1.25

1.35

1.45

1.55

1.66

1.78

1.90

2.03

2.17

2.24

2.31

2.46

2.61

2.78

2.95

3.04

3.13

700

706

719

732

745

759

773

787

801

816

830

845

860

868

875

890

905

920

935

—

1.21

1.25

1.34

1.43

1.53

1.63

1.74

1.86

1.98

2.10

2.23

2.37

2.52

2.59

2.66

2.82

2.98

3.15

3.33

—

759

764

776

789

802

815

828

841

854

867

881

895

909

917

924

938

953

—

1.48

1.52

1.61

1.71

1.81

1.92

2.04

2.16

2.29

2.42

2.56

2.71

2.87

2.95

3.03

3.19

3.37

—

814

819

831

842

854

866

878

891

904

917

930

943

956

963

970

—

1.74

1.79

1.89

2.00

2.11

2.23

2.35

2.48

2.61

2.75

2.90

3.05

3.22

3.30

3.38

—

864

869

880

892

903

915

926

938

950

963

976

988

—

2.01

2.06

2.17

2.29

2.42

2.54

2.67

2.81

2.95

3.10

3.25

3.41

—

915

918

927

938

949

961

972

983

995

1007

—

2.34

2.37

2.47

2.58

2.71

2.85

3.00

3.14

3.30

3.45

—

968

973

976

983

993

1003

1016

1026

—

2.81

2.84

2.92

3.03

3.17

3.32

3.47

—

LEGEND

Brake Horsepower Input to Fan

5. Maximum continuous bhp is 2.4. Extensive motor and electrical

testing on these units ensures that the full range of the motor can

be utilized with conﬁdence. Using your fan motors up to the rat-

ings shown will not result in nuisance tripping or premature motor

failure. Unit warranty will not be affected.

Bhp

NOTES:

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

—

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

Carrier representative to verify.

2. indicates ﬁeld-supplied motor and drive required.

3. Standard drive range is 685 to 935 rpm. All other rpms require a

7. Interpolation is permissible. Do not extrapolate.

ﬁeld-supplied drive.

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

Table 9 — Fan Performance, 48TJ012 — Vertical Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

592 0.76 661 0.93 722 1.09 779 1.26 829 1.42 880 1.58 924 1.73 970 1.89 1019 2.00 1066 2.30

607 0.83 676 1.01 734 1.17 791 1.34 840 1.51 890 1.68 935 1.84 977 2.00 1026 2.17 1070 2.44

622 0.90 690 1.09 746 1.25 803 1.43 852 1.60 900 1.77 946 1.95 987 2.11 1029 2.28 1075 2.51

638 0.98 705 1.17 759 1.33 815 1.52 864 1.70 910 1.88 957 2.06 998 2.23 1037 2.40 1082 2.58

653 1.06 719 1.26 772 1.43 826 1.62 876 1.81 921 1.98 967 2.17 1009 2.35 1047 2.53 1087 2.70

669 1.15 733 1.35 786 1.53 838 1.72 888 1.91 933 2.10 976 2.29 1020 2.48 1058 2.66 1095 2.84

684 1.24 747 1.44 800 1.64 850 1.82 900 2.03 945 2.22 986 2.41 1030 2.61 1069 2.80 1106 2.98

700 1.33 760 1.54 814 1.75 863 1.92 912 2.14 957 2.34 998 2.54 1039 2.74 1081 2.94 1117 3.13

715 1.43 774 1.64 828 1.86 875 2.04 924 2.26 969 2.47 1010 2.67 1049 2.87 1091 3.08 1128 3.29

731 1.54 787 1.74 843 1.98 888 2.16 936 2.38 981 2.60 1022 2.81 1060 3.02 1100 3.23

747 1.64 801 1.85 857 2.10 902 2.30 948 2.51 993 2.74 1034 2.96 1072 3.17 1110 3.38

—

763 1.76 816 1.97 872 2.23 916 2.44 960 2.64 1005 2.88 1046 3.11 1084 3.32

—

778 1.88 831 2.10 886 2.36 929 2.58 972 2.78 1016 3.03 1058 3.26

—

794 2.00 846 2.23 900 2.50 943 2.73 985 2.93 1028 3.17

810 2.13 861 2.37 913 2.64 958 2.89 999 3.09 1040 3.32

—

826 2.27 876 2.52 927 2.78 973 3.04 1012 3.26

—

842 2.41 892 2.67 940 2.92 987 3.21

858 2.55 907 2.83 954 3.08 1002 3.38

—

874 2.70 922 2.99 968 3.24

—

890 2.86 938 3.16

906 3.03 953 3.33

—

LEGEND

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

6. Maximum continuous bhp is 2.4 for the standard motor and 2.9 for

the alternate motor. Extensive motor and electrical testing on these

units ensures that the full range of the motor can be utilized with

conﬁdence. Using your fan motors up to the ratings shown will not

result in nuisance tripping or premature motor failure. Unit war-

ranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

Brake Horsepower Input to Fan

indicates alternate motor and/or drive required.

indicates ﬁeld-supplied motor and drive required.

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

Carrier representative to verify.

4. Standard drive range is 685 to 935 rpm. Alternate drive range is

835 to 1085 rpm. All other rpms require a ﬁeld-supplied drive.

8. Interpolation is permissible. Do not extrapolate.

Table 10 — Fan Performance, 48TJ014 — Vertical Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

6100

6200

729 1.36 790 1.58 847 1.79 902 2.06 955 2.29 1008 2.55 1060 2.80 1108 3.05 1152 3.27 1190 3.46

745 1.46 805 1.69 861 1.89 915 2.17 967 2.41 1019 2.67 1070 2.94 1118 3.19 1163 3.44 1203 3.65

761 1.56 820 1.80 875 2.01 928 2.29 979 2.55 1029 2.80 1079 3.07 1128 3.34 1173 3.60 1214 3.83

777 1.67 836 1.92 889 2.14 941 2.40 991 2.68 1040 2.94 1089 3.22 1137 3.49 1183 3.76 1225 4.00

793 1.79 851 2.05 904 2.27 955 2.52 1004 2.82 1052 3.08 1100 3.36 1147 3.65 1193 3,93 1236 4.19

810 1.91 867 2.18 918 2.41 968 2.65 1017 2.96 1064 3.23 1110 3.51 1157 3.81 1202 4.09 1245 4.38

826 2.04 883 2.32 933 2.55 982 2.79 1030 3.11 1076 3.40 1121 3.67 1167 3.97 1212 4.27 1255 4.56

842 2.17 898 2.46 948 2.70 996 2.93 1043 3.25 1088 3.56 1133 3.84 1178 4.14 1222 4.44 1265 4.74

859 2.31 914 2.60 962 2.85 1010 3.09 1056 3.40 1101 3.73 1144 4.00 1188 4.31 1232 4.62 1274 4.93

876 2.45 930 2.76 977 3.01 1024 3.26 1070 3.55 1114 3.90 1157 4.19 1199 4.49 1242 4.81 1284 5.13

892 2.60 945 2.91 992 3.18 1039 3.43 1083 3.71 1126 4.07 1169 4.38 1210 4.68 1252 5.00 1294 5.33

909 2.77 961 3.07 1008 3.36 1053 3.61 1097 3.88 1140 4.25 1181 4.58 1222 4.87 1263 5.20

926 2.93 977 3.24 1024 3.54 1068 3.80 1111 4.06 1153 4.41 1194 4.77 1234 5.09 1274 5.40

942 3.11 993 3.41 1039 3.73 1080 3.99 1125 4.25 1166 4.59 1207 4.97 1247 5.30 1286 5.62

—

959 3.29 1009 3.60 1055 3.92 1097 4.19 1139 4.46 1180 4.78 1220 5.18 1259 5.52

976 3.47 1025 3.78 1071 4.12 1112 4.40 1153 4.67 1194 4.98 1233 5.38 1272 5.74

—

993 3.67 1041 3.98 1086 4.33 1127 4.61 1168 4.90 1208 5.19 1246 5.58

—

1010 3.87 1057 4.18 1102 4.54 1142 4.84 1182 5.13 1221 5.41

1027 4.07 1073 4.39 1118 4.76 1157 5.07 1197 5.36 1235 5.64

—

1043 4.29 1090 4.61 1133 4.99 1173 5.31 1211 5.61

—

1060 4.51 1106 4.83 1149 5.22 1189 5.55

—

1077 4.74 1122 5.07 1165 5.45

1094 4.98 1139 5.31 1181 5.70

—

1111 5.22 1155 5.55

—

1128 5.48

1145 5.74

—

LEGEND

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

6. Maximum continuous bhp is 4.2 for the standard motor and 5.25

for the alternate motor. Extensive motor and electrical testing on

these units ensures that the full range of the motor can be utilized

with conﬁdence. Using your fan motors up to the ratings shown

will not result in nuisance tripping or premature motor failure. Unit

warranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

Brake Horsepower Input to Fan

indicates alternate motor and/or drive required.

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

Carrier representative to verify.

indicates ﬁeld-supplied motor and drive required.

4. Standard drive range is 860 to 1080 rpm. Alternate drive range is

900 to 1260 rpm. All other rpms require a ﬁeld-supplied drive.

8. Interpolation is permissible. Do not extrapolate.

Table 11 — Fan Performance, 48TJ008 — Horizontal Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

0.9

1.0

1.2

1.4

1.6

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

2200

2250

2300

2400

2500

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

499 0.50 580 0.70 652 0.94 717 1.17

507 0.53 586 0.73 658 0.97 722 1.22

513 0.55 592 0.76 663 1.00 727 1.26

528 0.60 606 0.83 674 1.06 738 1.34

542 0.66 619 0.90 686 1.13 748 1.41

550 0.69 627 0.94 692 1.17 754 1.45

557 0.72 634 0.97 698 1.21 759 1.49

573 0.79 648 1.05 711 1.29 770 1.58

588 0.86 662 1.13 723 1.38 782 1.66

604 0.94 676 1.21 737 1.48 794 1.76

620 1.02 690 1.30 750 1.58 806 1.86

636 1.11 704 1.39 764 1.69 818 1.97

652 1.21 718 1.49 778 1.80 831 2.09

668 1.31 732 1.59 793 1.92 844 2.21

684 1.41 747 1.70 807 2.04 857 2.35

701 1.53 762 1.82 821 2.16 871 2.48

717 1.65 777 1.94 835 2.29 885 2.63

733 1.77 792 2.07 849 2.42 899 2.78

742 1.84 800 2.14 856 2.49 907 2.86

748 1.30

752 1.34

756 1.38

766 1.46

777 1.55

783 1.60

787 1.64

798 1.73

809 1.82

821 1.92

832 2.02

844 2.13

856 2.25

869 2.37

882 2.51

895 2.64

908 2.79

922 2.95

929 3.03

779 1.43

783 1.46

786 1.49

795 1.58

806 1.68

812 1.74

816 1.79

827 1.88

837 1.98

848 2.08

849 2.18

870 2.29

882 2.40

894 2.53

907 2.66

919 2.80

932 2.95

945 3.11

952 3.20

839 1.78

843 1.81

846 1.84

853 1.88

859 1.94

864 1.99

868 2.04

878 2.16

889 2.29

900 2.41

910 2.52

920 2.64

931 2.76

942 2.89

905 2.21

908 2.25

910 2.25

912 2.31

919 2.37

920 2.39

921 2.41

928 2.45

937 2.57

947 2.70

958 2.85 1002 3.15

968 2.99 1012 3.30

979 3.13 1023 3.47

989 3.26 1034 3.63

951 2.57

955 2.59

959 2.61

967 2.68

971 2.73

974 2.76

976 2.78

983 2.88

986 2.91

993 3.01

954 3.02 1000 3.40 1044 3.79

966 3.15 1011 3.55 1054 3.94

978 3.30 1022 3.69 1065 4.10

990 3.45 1034 3.84 1076 4.26

997 3.54 1040 3.93 1082 5.27

LEGEND

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

6. Maximum continuous bhp is 2.4. Extensive motor and electrical

testing on these units ensures that the full range of the motor can

be utilized with conﬁdence. Using your fan motors up to the rat-

ings shown will not result in nuisance tripping or premature motor

failure. Unit warranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

Brake Horsepower Input to Fan

indicates alternate drive required.

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

Carrier representative to verify.

indicates ﬁeld-supplied motor and drive required.

4. Standard drive range is 590 to 840 rpm. Alternate drive range is

685 to 935 rpm. All other rpms require a ﬁeld-supplied drive.

8. Interpolation is permissible. Do not extrapolate.

Table 12 — Fan Performance, 48TJ009 — Horizontal Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

0.8 0.9 1.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

AIRFLOW

(Cfm)

0.2

0.4

0.6

1.2

1.4

1.6

2550

2600

2700

2800

2900

3000

3100

3200

3300

3400

3500

3600

3700

3750

3800

3900

4000

4100

4200

4250

4300

550 0.69 627 0.94 692 1.17 754 1.45

557 0.72 634 0.97 698 1.21 759 1.49

573 0.79 648 1.05 711 1.29 770 1.58

588 0.86 662 1.13 723 1.38 782 1.66

604 0.94 676 1.21 737 1.48 794 1.76

620 1.02 690 1.30 750 1.58 806 1.86

636 1.11 704 1.39 764 1.69 818 1.97

652 1.21 718 1.49 778 1.80 831 2.09

668 1.31 732 1.59 793 1.92 844 2.21

684 1.41 747 1.70 807 2.04 857 2.35

701 1.53 762 1.82 821 2.16 871 2.48

717 1.65 777 1.94 835 2.29 885 2.63

733 1.77 792 2.07 849 2.42 899 2.78

742 1.84 800 2.14 856 2.49 907 2.86

750 1.90 807 2.21 863 2.56 914 2.93

767 2.04 822 2.35 877 2.71 928 3.09

783 2.18 838 2.50 891 2.86 942 3.26

800 2.34 854 2.66 905 3.02 956 2.43

817 2.49 869 2.82 920 3.19 970 3.60

826 2.58 877 2.91 928 3.28 977 3.69

783 1.60

787 1.64

798 1.73

809 1.82

821 1.92

832 2.02

844 2.13

856 2.25

869 2.37

882 2.51

895 2.64

908 2.79

922 2.95

929 3.03

936 3.11

950 3.27

964 3.45

812 1.74

816 1.79

827 1.88

837 1.98

848 2.08

849 2.18

870 2.29

882 2.40

894 2.53

907 2.66

919 2.80

932 2.95

945 3.11

952 3.20

864 1.99

868 2.04

878 2.16

889 2.29

900 2.41

910 2.52

920 2.64

931 2.76

942 2.89

954 3.02 1000 3.40 1044 3.79

966 3.15 1011 3.55 1054 3.94

978 3.30 1022 3.69 1065 4.10

990 3.45 1034 3.84 1076 4.26

997 3.54 1040 3.93 1082 5.27

920 2.39

921 2.41

928 2.45

937 2.57

947 2.70

958 2.85 1002 3.15

968 2.99 1012 3.30

979 3.13 1023 3.47

989 3.26 1034 3.63

974 2.76

976 2.78

983 2.88

986 2.91

993 3.01

958 3.28 1003 3.62 1045 4.01 1087 4.43

972 3.45 1015 3.80 1057 4.18 1098 4.60

986 3.63 1028 3.99 1070 4.36 1110 4.78

978 3.62 1000 3.81 1042 4.18 1082 4.56 1122 4.97

992 3.80 1015 4.00 1055 4.38 1095 4.76 1134 5.16

999 3.90 1022 4.10 1062 4.49 1102 4.87 1140 5.27

834 2.66 885 3.00 935 3.37 984 3.78 1006 3.99 1029 4.20 1069 4.59 1108 4.98 1147 5.38

LEGEND

Brake Horsepower Input to Fan

5. Maximum continuous bhp is 2.4. Extensive motor and electrical

testing on these units ensures that the full range of the motor can

be utilized with conﬁdence. Using your fan motors up to the rat-

ings shown will not result in nuisance tripping or premature motor

failure. Unit warranty will not be affected.

Bhp

NOTES:

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

2. indicates ﬁeld-supplied motor and drive required.

—

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

Carrier representative to verify.

3. Standard drive range is 685 to 935 rpm. All other rpms require a

ﬁeld-supplied drive.

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

7. Interpolation is permissible. Do not extrapolate.

Table 13 — Fan Performance, 48TJ012 — Horizontal Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

3000

3100

3200

3300

3400

3500

3600

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

552 0.68 632 0.87 701 1.05 761 1.22 816 1.36 871 1.54 918 1.67 967 1.89 1010 2.09 1063 2.46

565 0.74 644 0.93 711 1.12 772 1.31 825 1.45 879 1.63 928 1.78 973 1.94 1018 2.17 1070 2.51

578 0.81 656 1.00 723 1.20 782 1.39 835 1.55 887 1.71 937 1.90 981 2.04 1026 2.26 1075 2.57

591 0.88 668 1.08 734 1.28 793 1.47 845 1.65 895 1.80 946 2.00 991 2.16 1032 2.32 1080 2.64

605 0.96 680 1.16 745 1.36 803 1.56 856 1.75 904 1.91 953 2.10 1000 2.29 1041 2.44 1083 2.65

619 1.04 691 1.23 755 1.44 813 1.65 867 1.86 914 2.03 961 2.20 1009 2.41 1051 2.57 1090 2.74

633 1.13 703 1.31 766 1.52 824 1.74 877 1.97 924 2.15 970 2.32 1017 2.53 1061 2.72 1099 2.88

648 1.23 714 1.39 777 1.61 835 1.85 887 2.07 935 2.28 980 2.45 1024 2.64 1069 2.87 1109 3.03

662 1.33 726 1.51 789 1.72 846 1.95 897 2.18 946 2.40 989 2.58 1033 2.76 1077 2.99 1118 3.20

677 1.44 738 1.61 801 1.82 857 2.06 908 2.29 956 2.53 1000 2.73 1042 2.91 1085 3.12 1127 3.36

692 1.55 750 1.73 813 1.94 868 2.17 918 2.40 967 2.66 1010 2.87 1052 3.06 1093 3.24

707 1.67 762 1.84 825 2.05 878 2.28 929 2.53 977 2.78 1021 3.02 1062 3.22 1102 3.41

—

722 1.80 775 1.97 837 2.16 889 2.40 941 2.66 987 2.91 1032 3.17 1072 3.38

—

737 1.94 787 2.09 848 2.27 900 2.52 952 2.80 999 3.04 1042 3.32

—

752 2.08 800 2.21 860 2.39 912 2.66 962 2.93 1008 3.19

768 2.24 814 2.35 871 2.51 924 2.80 973 3.07 1019 3.34

—

783 2.40 827 2.50 883 2.64 937 2.95 983 3.21

799 2.56 841 2.64 894 2.77 949 3.10 994 3.36

—

814 2.74 855 2.80 906 2.91 961 3.26

—

868 2.90 918 3.05 972 3.40

883 3.10 931 3.21

—

LEGEND

Brake Horsepower Input to Fan

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

6. Maximum continuous bhp is 2.4 for the standard motor and 2.9 for

the alternate motor. Extensive motor and electrical testing on these

units ensures that the full range of the motor can be utilized with

conﬁdence. Using your fan motors up to the ratings shown will not

result in nuisance tripping or premature motor failure. Unit war-

ranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

indicates alternate motor and/or drive required.

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

Carrier representative to verify.

8. Interpolation is permissible. Do not extrapolate.

indicates ﬁeld-supplied motor and drive required.

4. Standard drive range is 685 to 935 rpm. Alternate drive range is

835 to 1085 rpm. All other rpms require a ﬁeld-supplied drive.

Table 14 — Fan Performance, 48TJ014 — Horizontal Discharge Units

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

(Cfm)

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

3700

3800

3900

4000

4100

4200

4300

4400

4500

4600

4700

4800

4900

5000

5100

5200

5300

5400

5500

5600

5700

5800

5900

6000

6100

6200

677 1.20 748 1.43 810 1.65 869 1.89 928 2.17 984 2.43 1036 2.68 1080 2.90 1114 3.07 1135 3.17

691 1.28 761 1.52 822 1.75 880 1.98 937 2.28 993 2.55 1046 2.81 1092 3.05 1129 3.25 1156 3.39

705 1.37 773 1.62 834 1.86 891 2.08 947 2.39 1002 2.66 1055 2.94 1102 3.20 1143 3.42 1174 3.59

720 1.47 786 1.71 847 1.97 902 2.19 957 2.50 1011 2.79 1064 3.07 1112 3.34 1155 3.59 1190 3.80

734 1.56 800 1.82 860 2.09 914 2.31 967 2.60 1021 2.91 1072 3.20 1121 3.49 1165 3.76 1203 3.99

749 1.66 813 1.92 873 2.21 926 2.44 978 2.71 1030 3.04 1081 3.34 1130 3.64 1175 3.92 1215 4.18

764 1.77 826 2.04 886 2.33 938 2.57 989 2.83 1040 3.18 1090 3.48 1139 3.79 1185 4.08 1226 4.36

779 1.88 840 2.16 899 2.46 951 2.71 1000 2.96 1050 3.31 1100 3.63 1148 3.94 1194 4.25 1236 4.54

793 1.99 854 2.28 912 2.59 963 2.86 1012 3.09 1061 3.43 1109 3.78 1157 4.09 1203 4.42 1246 4.72

808 2.11 868 2.42 925 2.73 975 3.00 1024 3.25 1071 3.56 1119 3.93 1166 4.26 1212 4.58 1255 4.91

822 2.24 882 2.56 937 2.86 988 3.16 1036 3.42 1082 3.70 1129 4.09 1175 4.43 1221 4.76 1264 5.09

837 2.37 896 2.71 950 3.00 1001 3.32 1048 3.59 1093 3.86 1139 4.24 1185 4.60 1230 4.93 1273 5.28

852 2.51 910 2.86 963 3.15 1014 3.48 1060 3.76 1105 4.02 1150 4.38 1194 4.77 1239 5.12 1282 5.47

867 2.65 924 3.01 977 3.30 1027 3.65 1073 3.94 1117 4.20 1161 4.54 1204 4.95 1248 5.31 1291 5.66

882 2.79 938 3.17 990 3.46 1040 3.82 1085 4.12 1129 4.40 1172 4.71 1214 5.13 1257 5.51

896 2.95 952 3.33 1003 3.63 1053 4.00 1098 4.30 1141 4.60 1183 4.91 1225 5.29 1267 5.70

—

911 3.11 967 3.50 1017 3.80 1066 4.18 1111 4.50 1153 4.80 1194 5.08 1236 5.47

926 3.27 981 3.68 1030 3.98 1079 4.35 1124 4.70 1166 5.01 1206 5.29 1247 5.65

—

940 3.44 995 3.86 1044 4.17 1092 4.54 1137 4.91 1178 5.22 1218 5.52

955 3.62 1010 4.04 1058 4.38 1105 4.73 1150 5.12 1190 5.44 1230 5.75

—

970 3.80 1024 4.23 1072 4.59 1118 4.93 1163 5.34 1203 5.67

—

985 3.99 1039 4.42 1086 4.80 1131 5.14 1176 5.56

—

1000 4.18 1053 4.62 1100 5.02 1144 5.36

1015 4.39 1068 4.83 1114 5.25 1158 5.58

—

1030 4.59 1083 5.04 1128 5.48

1046 4.81 1097 5.26 1142 5.71

—

LEGEND

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

6. Maximum continuous bhp is 4.2 for the standard motor and 5.25

for the alternate motor. Extensive motor and electrical testing on

these units ensures that the full range of the motor can be utilized

with conﬁdence. Using your fan motors up to the ratings shown

will not result in nuisance tripping or premature motor failure. Unit

warranty will not be affected.

Bhp

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 4.)

—

Brake Horsepower Input to Fan

indicates alternate motor and/or drive required.

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

Carrier representative to verify.

indicates ﬁeld-supplied motor and drive required.

4. Standard drive range is 860 to 1080 rpm. Alternate drive range is

900 to 1260 rpm. All other rpms require a ﬁeld-supplied drive.

8. Interpolation is permissible. Do not extrapolate.

START-UP

Main Burners — Main burners are factory set and should

require no adjustment.

Unit Preparation — Make sure that unit has been in-

stalled in accordance with these installation instructions and

applicable codes. Make sure that Start-Up Checklist has been

completed and ﬁlled out.

TO CHECK ignition of main burners and heating controls,

move thermostat set point above room temperature and verify

that the burners light and evaporator fan is energized. After

ensuring that the unit continues to heat the building, lower

the thermostat setting below the room temperature and verify

that the burners and evaporator fan turn off (fan will turn off

only if fan selector switch is in the AUTO. position). Refer

to Table 15 for the correct oriﬁce to use at high altitudes.

Return-Air Filters — Make sure correct ﬁlters are in-

stalled in ﬁlter tracks (see Table 1). Do not operate unit with-

out return-air ﬁlters.

Outdoor-Air Inlet Screens — Outdoor-air inlet screens

must be in place before operating unit.

NOTE: Upon a call for heat, the main burners will remain

on for a minimum of 60 seconds.

Compressor Mounting — Compressors are inter-

nally spring mounted. Do not loosen or remove compressor

holddown bolts. On 48TJ014 units, remove the tiedown bands

that hold the compressors together.

Heating

1. Purge gas supply line of air by opening union ahead of

gas valve. When gas odor is detected, tighten union and

wait 5 minutes before proceeding.

2. Turn on electrical supply and open manual gas valve.

3. Set system switch selector at HEAT position and fan switch

at AUTO. or ON position. Set heating temperature lever

above room temperature.

Internal Wiring — Check all electrical connections in

unit control boxes. Tighten as required.

Refrigerant Service Ports — Each refrigerant sys-

tem has 4 Schrader-type service gage ports: one on the suc-

tion line, one on the liquid line, and two on the compressor

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

Schrader-type valve is located under both the high-pressure

switch and the low-pressure switch when ordered as an option.

4. The induced-draft motor will start.

5. After a call for heating, the main burners should light within

5 seconds. If the burners do not light, then there is a

22-second delay before another 5-second try. If the burn-

ers still do not light, the time delay is repeated. If the

burners do not light within 15 minutes, there is a lockout.

To reset the control, break the 24 v power to W1.

6. The evaporator-fan motor will turn on 45 seconds after

the burners are ignited.

7. The evaporator-fan motor will turn off 45 seconds after

the thermostat temperature is satisﬁed.

8. Adjust airﬂow to obtain a temperature rise within the range

speciﬁed on the unit nameplate and in Table 1.

Compressor Rotation — On 3-phase units with scroll

compressors, it is important to be certain compressor is

rotating in the proper direction. To determine whether or not

compressor is rotating in the proper direction:

1. Connect service gages to suction and discharge pressure

ﬁttings.

2. Energize the compressor.

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

pressure does not rise to normal levels:

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

the wrong direction.

2. Turn off power to the unit.

3. Reverse any two of the unit power leads.

4. Reapply power to the compressor.

NOTE: The default value for the evaporator-fan motor

ON and OFF delay is 45 seconds. The Integrated Gas Unit

Controller (IGC) modiﬁes this value when abnormal limit

switch cycles occur. Based upon unit operating condi-

tions, the ON delay can be reduced to 0 seconds and the

OFF delay can be extended to 180 seconds.

When one ﬂash of the LED (light-emitting diode) is ob-

served, the evaporator-fan ON/OFF delay has been modi-

ﬁed. If the limit switch trips at the start of the heating

cycle during the evaporator ON delay, the time period of

the ON delay for the next cycle will be 5 seconds less

than the time at which the switch tripped. (Example: If

the limit switch trips at 30 seconds, the evaporator-fan

ON delay for the next cycle will occur at 25 seconds.) To

prevent short-cycling, a 5-second reduction will only oc-

cur if a minimum of 10 minutes has elapsed since the last

call for heating.

The suction and discharge pressure levels should now move

to their normal start-up levels.

NOTE: When the compressor is rotating in the wrong

direction, the unit will make an elevated level of noise and

will not provide cooling.

The evaporator-fan OFF delay can also be modiﬁed. Once

the call for heating has ended, there is a 10-minute period

during which the modiﬁcation can occur. If the limit switch

trips during this period, the evaporator-fan OFF delay will

increase by 15 seconds. A maximum of 9 trips can occur,

extending the evaporator-fan OFF delay to 180 seconds.

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

system selector switch at COOL position and fan switch at

AUTO. position. Adjust thermostat to a setting below room

temperature. Compressor starts on closure of contactor.

Check unit charge. Refer to Service, Refrigerant Charge

section, page 26.

Reset thermostat at a position above room temperature.

Compressor will shut off. Evaporator fan will shut off after

30-second delay.

TO SHUT OFF UNIT — Set system selector switch at OFF

position. Resetting thermostat at a position above room tem-

perature shuts unit off temporarily until space temperature

exceeds thermostat setting.

To restore the original default value, reset the power to

the unit.

TO SHUT OFF UNIT — Set system selector switch at OFF

position. Resetting heating selector lever below room tem-

perature will shut unit off temporarily until space tempera-

ture falls below thermostat setting.

Table 15 — Altitude Compensation*

compressor no. 1 and the outdoor (condenser) fan motor (OFM).

The indoor (evaporator) fan motor (IFM) is energized and

the economizer damper moves to the minimum position. Upon

a further call for cooling, compressor contactor no. 2 will be

energized, starting compressor no. 2. After the thermostat is

satisﬁed, the damper moves to the fully closed position when

using an auto fan or to the minimum position when using a

continuous fan.

When the outdoor-air temperature is below the OAT set-

ting and the thermostat calls for cooling, the economizer damp-

ers move to the minimum position. If the supply-air temperature

is above 57 F, the damper continues to open until it reaches

the fully open position or until the supply-air temperature

drops below 52 F.

When the supply-air temperature falls to between 57 F

and 52 F, the damper will remain at an intermediate open

position. If the supply-air temperature falls below 52 F, the

damper will modulate closed until it reaches the minimum

position or until the supply-air temperature is above 52 F.

When the thermostat is satisﬁed, the damper will move to

the fully closed position when using an auto fan or to the

minimum position when using a continuous fan.

125,000, 180,000, AND

250,000 BTUH

NOMINAL INPUT

224,000 BTUH

NOMINAL INPUT

ELEVATION

(Ft)

Natural

Liquid

Propane

Oriﬁce

Size†

Natural

Gas

Oriﬁce

Size†

Liquid

Propane

Oriﬁce

Size†

Gas

Oriﬁce

Size†

0-2,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

9,000

10,000

11,000

12,000

13,000

14,000

If the outdoor air alone cannot satisfy the cooling require-

ments of the conditioned space, economizer cooling is in-

tegrated with mechanical cooling, providing second-stage

cooling. Compressor no. 1 and the condenser fan will be en-

ergized and the position of the economizer damper will be

determined by the supply-air temperature. Compressor no. 2

is locked out.

When the second stage of cooling is satisﬁed, the com-

pressor and OFM will be deenergized. The damper position

will be determined by the supply-air temperature.

*As the height above sea level increases, there is less oxygen per

cubic foot of air. Therefore, heat input rate should be reduced at

higher altitudes.

†Oriﬁce available through your local distributor.

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

Schrader port provides pressure relief under abnormal tem-

perature and pressure conditions.

Ventilation (Continuous Fan) — Set fan and sys-

tem selector switches at ON and OFF positions, respec-

tively. Evaporator fan operates continuously to provide con-

stant air circulation. When the evaporator-fan selector switch

is turned to the OFF position, there is a 30-second delay be-

fore the fan turns off.

After a 30-second delay, the IFM shuts off. If the ther-

mostat fan selector switch is in the ON position, the IFM

will run continuously.

COOLING UNITS WITH PARABLADE ECONOMIZER

— When the outdoor air is above the enthalpy control set-

ting, and the room thermostat calls for cooling, the compres-

sor contactor no. 1 is energized to start compressor no. 1 and

the outdoor (condenser) fan motor. The indoor (evaporator)

fan motor is energized and the economizer damper moves to

the minimum position. Upon further call for cooling, com-

pressor contactor no. 2 is energized, starting compressor

no. 2. After the room thermostat is satisﬁed the damper will

spring return to the fully closed position.

When the outdoor air is below the enthalpy control setting

and the thermostat calls for cooling, the economizer outdoor

air damper is opened proportionally to maintain between 50

and 56 F at the mixed air sensor. If outside air alone cannot

satisfy the cooling requirements, economizer cooling is in-

tegrated with mechanical cooling and the second compres-

sor is locked out. When the room thermostat is satisﬁed, the

damper will spring return to the fully closed position.

Operating Sequence

COOLING, UNITS WITHOUT ECONOMIZER — When

thermostat calls for cooling, terminals G and Y1 are ener-

gized. The indoor (evaporator) fan contactor (IFC) and com-

pressor contactor no. 1 (C1) are energized, and evaporator-

fan motor, compressor no. 1, and condenser fan start. The

condenser-fan motor runs continuously while unit is

cooling. If the thermostat calls for a second stage of cooling

by energizing Y2, compressor contactor no. 2 (C2) is ener-

gized and compressor no. 2 starts.

When the thermostat is satisﬁed, C1 and C2 are deener-

gized and the compressors and outdoor (condenser) fan mo-

tor (OFM) shut off. After a 30-second delay, the indoor

(evaporator) fan motor (IFM) shuts off. If the thermostat fan

selector switch is in the ON position, the evaporator motor

will run continuously.

HEATING, UNITS WITH ECONOMIZER — When the ther-

mostat calls for heating, terminal W1 is energized. In order

to prevent thermostat short-cycling, the unit is locked into

the Heating mode for at least 1 minute when W1 is ener-

gized. The induced-draft motor is then energized and the burner

ignition sequence begins. The indoor (evaporator) fan motor

(IFM) is energized 45 seconds after a ﬂame is ignited and

the damper moves to the minimum position. On units equipped

for two stages of heat, when additional heat is needed, W2

is energized and the high-ﬁre solenoid on the main gas valve

(MGV) is energized. When the thermostat is satisﬁed and

W1 and W2 are deenergized, the IFM stops after a 45 sec-

ond time-off delay. The economizer damper then moves to

the fully closed position. When using continuous fan, the

damper will remain in the minimum position.

HEATING, UNITS WITHOUT ECONOMIZER — When

the thermostat calls for heating, terminal W1 is energized. In

order to prevent thermostat short-cycling, the unit is locked

into the Heating mode for at least 1 minute when W1 is en-

ergized. The induced-draft motor (IDM) is then energized

and the burner ignition sequence begins. The indoor (evapo-

rator) fan motor (IFM) is energized 45 seconds after a ﬂame

is ignited. On units equipped for two stages of heat, when

additional heat is needed, W2 is energized and the high-ﬁre

solenoid on the main gas valve (MGV) is energized. When

the thermostat is satisﬁed and W1 and W2 are

deenergized, the IFM stops after a 45-second time-off delay.

COOLING, UNITS WITH DURABLADE ECONOMIZER

— When the outdoor-air temperature is above the OAT

(outdoor-air thermostat) setting and the room thermostat calls

for cooling, compressor contactor no. 1 is energized to start

SERVICE

When servicing unit, shut off all electrical power to unit

to avoid shock hazard or injury from rotating parts.

Cleaning — Inspect unit interior at the beginning of each

heating and cooling season and as operating conditions

require.

EVAPORATOR COIL — Clean coil as required. Inspect coil

at beginning of heating and cooling seasons.

1. Turn unit power off. Remove evaporator coil access panel.

2. If economizer is installed, remove economizer by

disconnecting Molex plug and removing economizer mount-

ing screws. Refer to Accessory Economizer Installation

Instructions or Optional Economizer sections on

pages 12 and 15 for more details.

Fig. 37 — Cleaning Condenser Coil

3. Slide ﬁlters out of unit.

4. Clean coil using a commercial coil cleaner or dishwasher

detergent in a pressurized spray canister. Wash both sides

of coil and ﬂush with clean water. For best results, back-

ﬂush toward return-air section to remove foreign

material.

5. Flush condensate pan after completion.

6. Reinstall economizer and ﬁlters.

7. Reconnect wiring.

8. Replace access panels.

CONDENSER COIL — Inspect coil monthly. Clean con-

denser coil annually, and as required by location and outdoor-

air conditions.

One-Row Coils — Wash coil with commercial cleaner. Clean

outer surfaces with a stiff brush in the normal manner. It is

not necessary to remove top panel.

2-Row Coils — Clean coil as follows:

1. Turn off unit power.

Fig. 38 — Propping Up Top Panel

2. Remove top panel screws on condenser end of unit.

3. Remove condenser coil corner post. See Fig. 37. To hold

top panel open, place coil corner post between top panel

and center post. See Fig. 38.

4. Remove screws securing coil to center post.

5. Remove fastener holding coil sections together at return

end of condenser coil. Carefully separate the outer coil

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

Fig. 39.

6. 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.

7. Secure inner and outer coil rows together with a ﬁeld-

supplied fastener.

8. Reposition the outer coil section and remove the coil cor-

ner post from between the top panel and center post.

9. Reinstall the coil corner post and replace all screws.

CONDENSATE DRAIN — Check and clean each year at

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

against freeze-up.

FILTERS — Clean or replace at start of each heating and

cooling season, or more often if operating conditions require

it. Replacement ﬁlters must be same dimensions as original

ﬁlters.

Fig. 39 — Separating Coil Sections

Lubrication

COMPRESSORS — Each compressor is charged with the

correct amount of oil at the factory.

FAN-MOTOR BEARINGS — Fan-motor bearings are of

the permanently lubricated type. No further lubrication is

required. No lubrication of condenser- or evaporator-fan

motors is required.

to the service port on the suction line. Mount the tempera-

ture sensing device on the suction line and insulate it so that

outdoor ambient temperature does not affect the reading. Indoor-

air cfm must be within the normal operating range of the

unit.

Condenser-Fan Adjustment (Fig. 40)

1. Shut off unit power supply.

2. Remove condenser-fan assembly (grille, motor, motor cover,

and fan) and loosen fan hub setscrews.

3. Adjust fan height as shown in Fig. 40.

TO USE COOLING CHARGING CHART — Take the out-

door ambient temperature and read the suction pressure gage.

Refer to appropriate chart to determine what suction tem-

perature should be. If suction temperature is high, add re-

frigerant. If suction temperature is low, carefully recover some

of the charge. Recheck the suction pressure as charge is ad-

justed. Example (Fig. 44, Circuit 2):

4. Tighten setscrews and replace condenser-fan assembly.

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

Suction Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 psig

Suction Temperature should be . . . . . . . . . . . . . . . . . . 56 F

(Suction temperature may vary ± 5 F.)

If Chargemaster௡ charging device is used, temperature and

pressure readings must be accomplished using the charging

charts.

48TJ UNIT VOLTAGE

208/230 V

FAN HEIGHT ‘‘A’’ (in.)

2.75

3.50

460 V and 575 V

Fig. 40 — Condenser-Fan Adjustment

Manual Outdoor-Air Damper — If outdoor-air damper

blade is required, see Manual Outdoor-Air Damper section

on page 11.

Economizer Adjustment — Refer to Optional Econo-

mizer sections on pages 12 and 15.

Condenser Coil Grille — Condenser coil grille is shipped

factory-installed. No adjustments are required.

Refrigerant Charge — Amount of refrigerant charge

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

Carrier GTAC 2-5 Charging, Recovery, Recycling, and Rec-

lamation training manual and the following procedures.

Unit panels must be in place when unit is operating dur-

ing charging procedure.

NO CHARGE — Use standard evacuating techniques. After

evacuating system, weigh in the speciﬁed amount of refrig-

erant (refer to Table 1).

LOW CHARGE COOLING — Using Cooling Charging

Charts, Fig. 41-44, vary refrigerant until the conditions of

the appropriate chart are met. Note the charging charts are

different from the type normally used. The charts are based

on charging the units to the correct superheat for the various

operating conditions. Accurate pressure gage and tempera-

ture sensing device are required. Connect the pressure gage

Fig. 41 — Cooling Charging Chart; 48TJ008

Fig. 42 — Cooling Charging Chart; 48TJ009

Fig. 43 — Cooling Charging Chart; 48TJ012

Fig. 44 — Cooling Charging Chart; 48TJ014

history) and the indoor (evaporator) fan ON/OFF times will

Flue Gas Passageways — To inspect the ﬂue col-

be reset. For additional information, refer to the Start-Up,

Heating section on page 23. The LED error code can be ob-

served through the viewport. See Fig. 12. During servicing

refer to the label on the control box cover or Table 16 for an

explanation of LED error code descriptions.

lector box and upper areas of the heat exchanger:

1. Remove the combustion blower wheel and motor assem-

bly according to directions in Combustion-Air Blower sec-

tion below.

2. Remove the ﬂue cover to inspect the heat exchanger.

3. Clean all surfaces as required using a wire brush.

If lockout occurs, unit may be adjusted by interrupting power

supply to unit for at least 5 seconds.

Combustion-Air Blower — Clean periodically to as-

sure proper airﬂow and heating efficiency. Inspect blower

wheel every fall and periodically during heating season. For

the ﬁrst heating season, inspect blower wheel bimonthly to

determine proper cleaning frequency.

To inspect blower wheel, shine a ﬂashlight into drafthood

opening. If cleaning is required, remove motor and wheel as

follows:

1. Slide burner access panel out.

2. Remove the 6 screws that attach induced-draft motor hous-

ing to vestibule plate (Fig. 45).

3. The blower wheel can be cleaned at this point. If

additional cleaning is required, continue with Steps 4

and 5.

4. To remove blower from the motor shaft, remove 2

setscrews.

5. To remove motor, remove the 4 screws that hold blower

housing to mounting plate. Remove the motor cooling fan

by removing one setscrew. Then remove nuts that hold

motor to mounting plate.

Table 16 — LED Error Code Description*

LED INDICATION

ERROR CODE DESCRIPTION

Normal Operation

OFF

Hardware Failure

1 Flash†

2 Flashes

3 Flashes

4 Flashes

5 Flashes

6 Flashes

7 Flashes

8 Flashes

Evaporator Fan On/Off Delay Modiﬁed

Limit Switch Fault

Flame Sense Fault

4 Consecutive Limit Switch Faults

Ignition Lockout Fault

Induced-Draft Motor Fault

Rollout Switch Fault

Internal Control Fault

LED

—

Light-Emitting Diode

*A 3-second pause exists between LED error code ﬂashes. If more

than one error code exists, all applicable codes will be displayed in

numerical sequence.

†Indicates a code that is not an error. The unit will continue to op-

erate when this code is displayed.

IMPORTANT: Refer to Troubleshooting Tables 17-21 for additional

information.

6. To reinstall, reverse the procedure outlined above.

Limit Switch — Remove blower access panel (Fig. 7).

Main Burners — At the beginning of each heating sea-

son, inspect for deterioration or blockage due to corrosion or

other causes. Observe the main burner ﬂames and adjust if

necessary.

Limit switch is located on the fan deck.

Burner Ignition — Unit is equipped with a direct spark

ignition 100% lockout system. Integrated Gas Unit Control-

ler (IGC) is located in the control box (Fig. 12). Module con-

tains a self-diagnostic LED. A single LED on the IGC pro-

vides a visual display of operational or sequential problems

when the power supply is interrupted. When a break in power

occurs, the module will be reset (resulting in a loss of fault

When working on gas train, do not hit or plug oriﬁce

spuds.

REMOVAL AND REPLACEMENT OF GAS TRAIN

(Fig. 45 and 46)

ROLLOUT

SWITCH

1. Shut off manual gas valve.

2. Shut off power to unit.

3. Slide out burner section side panel (not shown).

4. Disconnect gas piping at unit gas valve.

5. Remove wires connected to gas valve. Mark each wire.

BURNER

SECTION

FLUE

6. Remove wires from ignitor and sensor wires at the Inte-

grated Gas Unit Controller (IGC).

7. Remove the 2 screws that attach the burner rack to the

vestibule plate.

8. Slide the burner tray out of the unit (Fig. 46).

9. To reinstall, reverse the procedure outlined above.

EXHAUST

VESTIBULE

PLATE

INDUCED-DRAFT

MOTOR

MANIFOLD

PRESSURE TAP

CLEANING AND ADJUSTMENT

GAS VALVE

1. Remove burner rack from unit as described in Removal

and Replacement of Gas Train section, above.

2. Inspect burners; if dirty, remove burners from rack.

3. Using a soft brush, clean burners and cross-over port as

required.

Fig. 45 — Burner Section Details

4. Adjust spark gap. See Fig. 47.

5. Reinstall burners on rack.

6. Reinstall burner rack as described in Removal and Re-

placement of Gas Train section, this page.

Replacement Parts — A complete list of replace-

ment parts may be obtained from any Carrier distributor upon

request.

Fig. 46 — Burner Tray Details

125,000 BTUH INPUT

48TJD008,009

120,000-180,000 BTUH INPUT

48TJD012, 48TJE008,009

180,000-224,000 BTUH INPUT

200,000-250,000 BTUH INPUT

48TJD014; 48TJE012

48TJF008,009

48TJE014; 48TJF012

NOTE: Dimensions in ( ) are millimeters.

Fig. 47 — Spark Gap Adjustment

TROUBLESHOOTING

Table 17 — LED Error Code Service Analysis

PROBLEM

CAUSE

REMEDY

Hardware failure.

(LED OFF)

Loss of power to control module (IGC).

Check 5-amp fuse on IGC, power to unit, 24-v circuit

breaker, and transformer. Units without a 24-v circuit

breaker have an internal overload in the 24-v trans-

former. If the overload trips, allow 10 minutes for auto-

matic reset.

Limit switch fault.

(LED 2 ﬂashes)

High temperature limit switch is open.

Check the operation of the indoor (evaporator) fan mo-

tor. Ensure that the supply-air temperature rise is in ac-

cordance with the range on the unit nameplate.

Flame sense fault.

(LED 3 ﬂashes)

The IGC sensed ﬂame that should not be present.

Inadequate airﬂow to unit.

Reset unit. If problem persists, replace control board.

4 consecutive limit

switch trips.

(LED 4 ﬂashes)

Check operation of indoor (evaporator) fan motor and

that supply-air temperature rise agrees with range on

unit nameplate information.

Ignition lockout.

(LED 5 ﬂashes)

Unit unsuccessfully attempted ignition for 15 minutes.

Check ignitor and ﬂame sensor electrode spacing, gaps,

etc. Ensure that ﬂame sense and ignition wires are prop-

erly terminated. Verify that unit is obtaining proper

amount of gas.

Induced-draft motor

fault.

(LED 6 ﬂashes)

IGC does not sense that induced-draft motor is

operating.

Check for proper voltage. If motor is operating, check

the speed sensor plug/IGC Terminal J2 connection.

Proper connection: PIN 1 — White, PIN 2 — Red, PIN 3

— Black.

Rollout switch fault.

(LED 7 ﬂashes)

Rollout switch has opened.

Rollout switch will automatically reset, but IGC will con-

tinue to lock out unit. Check gas valve operation. Ensure

that induced-draft blower wheel is properly secured to

motor shaft. Reset unit at unit disconnect.

Internal control fault. Microprocessor has sensed an error in the software or

If error code is not cleared by resetting unit power, re-

place the IGC.

(LED 8 ﬂashes)

hardware.

LEGEND

IGC

LED

—

Integrated Gas Unit Controller

Light-Emitting Diode

IMPORTANT: Refer to Table 21 — Heating Service Troubleshoot-

ing for additional troubleshooting information.

If the IGC must be replaced, be sure to ground yourself to dis-

sipate any electrical charge that may be present before han-

dling new control board. The IGC is sensitive to static electricity

and may be damaged if the necessary precautions are not taken.

Table 18 — Durablade Economizer Troubleshooting

PROBLEM

CAUSE

REMEDY

Damper does not

open.

Indoor (evaporator) fan is off.

1. Check to ensure that 24 vac is present at terminal C1 on the IFC or

that 24 vac is present at the IFO terminal. Check whether 24 vac is

present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is

not present, check wiring (see unit label diagram).

2. Check proper thermostat connection to G on the connection board.

No power to economizer motor.

1. Check that SW3 is properly making contact with the damper

blade. Check that SW1 is in the NC (normally closed) position.

2. Check diode D1. If diode is not functioning properly, replace D1.

3. Conﬁrm that the economizer control board is grounded properly at

PL6-4 (brown wire) and at brown terminal of the economizer control

board (brown wire). The economizer motor must also be grounded

properly at the negative motor terminal (brown wire).

4. Verify SW1 and SW3 are working and wired properly (see unit label

diagram).

5. Check for 24 vac input at both PL6-1 (red wire) and PL6-3 (black

wire). If 24 vac not present, check unit wiring (see unit label dia-

gram). If 24 vac is found in both places, check for 24 vac at the yel-

low terminal of the economizer control board (yellow wire). If

24 vac power is not present, replace the economizer control board.

Economizer motor failure.

OAT or EC set too high.

If the indoor (evaporator) fan and economizer motor are energized,

verify that there is a minimum of 18 vdc at the positive motor terminal.

If the motor is not operating, replace the motor.

1. Set at correct temperature (3 F below indoor space temperature).

2. Check OAT or EC by setting above outdoor temperature or humidity

level. If the OAT or EC switches do not close, replace OAT or EC.

Economizer operation

limited to minimum

position.

Verify economizer control board is correctly wired 1. Perform the following tests when OAT or EC is closed, Y1 is called

and works properly.

for and damper is at minimum position. Conﬁrm 24 vac on gray ter-

minal of the economizer control board (gray wire). If 24 vac is not

present, check wiring (see unit label diagram).

2. Verify that SW1 and SW3 are wired correctly and working properly

(see unit label diagram).

3. Check to ensure that 24 vac exists at PL6-2 (blue wire). If

24 vac is not present, check wiring (see unit wiring label diagram).

4. Check 24 vac output at PL6-10 (white wire). If 24 vac is not

present, replace economizer control board.

Check SAT.

1. After verifying that the OAT and EC settings and the economizer

control board wiring are correct, check to ensure that the 24 vac

terminal of the SAT has 24 vac (white wire). If OAT, EC, and control

board are functioning and wired properly and no 24 vac exists,

check wiring (see unit label diagram).

2. If supply-air temperature is greater than 57 F, 24 vac should be

found at terminal T2 on the SAT (pink wire). If 24 vac is not present,

replace SAT.

Damper does not

close.

Incorrect wiring of economizer.

1. Verify that SW2 and SW4 are wired and working properly (see unit

label diagram).

2. Check diode D2. If diode is not functioning properly, replace D2.

Verify economizer control board is functioning

properly.

1. After verifying that the wiring is correct, modulate the damper to the

minimum position. Remove the call for G (evaporator fan).

2. If the damper does not move, check for 24 vac at PL6-1 (red wire).

If 24 vac is not present, check wiring (see unit label diagram).

3. If damper still does not move, check for 24 vac at blue terminal of

economizer control board (blue wire). If 24 vac is not present, re-

place the economizer circuit board.

Check SAT.

1. After verifying that the wiring is correct and the economizer control

board is functioning properly, place the OAT or EC switch in the

closed position. Place a call for Y1 and open the damper to the fully

open position. Conﬁrm that the 24 vac terminal of the SAT has

24 vac (white wire). If 24 vac is not present, check wiring (see unit

label diagram).

2. If supply-air temperature is less than 52 F, 24 vac should be found

at terminal T1 on the SAT (violet wire). If 24 vac not found, replace

SAT.

Economizer motor failure.

If economizer control board and SAT are functioning properly, verify

that there is a minimum of 18 vdc at the positive motor terminal. If a

minimum if 18 vdc is present and the motor is still not operating, re-

place the motor.

Economizer damper

does not close on

power loss.

Verify that close-on-power-loss and economizer

control board are functioning properly.

1. Check voltage potential across batteries. If lower than 14 vdc, re-

place close-on-power-loss power supply (9-v alkaline batteries). It is

recommended that you check this emergency power supply on a

regular basis or whenever the ﬁlters are changed.

2. If the close-on-power-loss and economizer control board are func-

tioning properly, check for 14 vdc or higher at the blue terminal of

the economizer control board (blue wire) when power is discon-

nected from unit. If 14 vdc is not present, replace the control board.

LEGEND

—

Common Power

Enthalpy Control

IFC

IFO

OAT

SAT

Indoor (Evaporator) Fan Contactor

Indoor (Evaporator) Fan On

Outdoor-Air Thermostat

Plug

Supply-Air Thermostat

Economizer Position Switch

Table 19 — PARABLADE Economizer Service Troubleshooting

PROBLEM

CAUSE

Evaporator fan not on.

REMEDY

Damper does not

open.

Check wiring between G on connection board and indoor (evaporator)

fan contactor.

No power to economizer motor.

1. Disconnect power at TR and TR1. Disconnect jumper across P

and P1.

2. Connect jumper across TR and 1.

3. Connect jumper across T1 and T.

4. If connected, remove enthalpy sensor from terminals S_oand +.

Factory-installed 620 ohm resistor should be connected to termi-

nals S_Rand +.

5. Apply power (24 vac) to terminals TR and TR1. The LED should

be off and the damper should be in the closed position.

6. Disconnect the factory-installed 620 ohm resistor from terminals

S_Rand +. The LED should light up and the motor should drive to-

wards open. If this does not happen, replace the economizer con-

trol module.

Economizer motor failure.

If the indoor (evaporator) fan and economizer motor are energized,

verify that there is a minimum of 24 vac at terminals TR and TR1. If

the motor is not operating, replace the motor.

Economizer opera-

tion limited to mini-

mum position.

Economizer control module

failure.

1. To simulate high or low enthalpy, reconnect the factory-installed

620 ohm resistor across terminals S_Rand +.

2. Connect 1.2 Kohm checkout resistor across terminals S_oand +.

Turn the enthalpy set point to ‘‘A.’’ The LED should turn on, indi-

cating low enthalpy. The motor should drive towards open. If LED

does not light, replace module. If motor does not drive open, check

motor operation.

3. Turn the enthalpy set point to ‘‘D.’’ The LED should turn off, indi-

cating high enthalpy. The motor should drive towards closed. If

these actions do not occur, replace module.

4. Disconnect 1.2 Kohm checkout resistor before resuming operation.

Damper does not

close.

No power to economizer.

1. Disconnect power at TR and TR1. Disconnect jumper across P

and P1.

2. Connect jumper across TR and 1.

3. Connect jumper across T1 and T.

4. If connected, remove enthalpy sensor from terminals S_oand +.

Factory-installed 620 ohm resistor should be connected to termi-

nals S_Rand +.

5. Apply power (24 vac) to terminals TR and TR1. The LED should

be off and the damper should be in the closed position.

6. Disconnect the factory-installed 620 ohm resistor from terminals

S_Rand +. The LED should light up and the motor should drive to-

wards open. If this does not happen, replace the economizer con-

trol module.

Spring return failure.

If power to unit is off and damper does not close, check for a bound

linkage. If linkage is not bound, then internal spring may be broken.

Replace actuator.

Economizer motor failure.

Sensor incorrectly wired or bad.

If the economizer control module is functioning properly, verify that

there is a minimum of 24 vac at terminals TR and TR1. If the motor is

not operating, replace the motor.

Damper does not

open or

To verify sensor operation, reconnect the + lead of the outdoor en-

thalpy sensor to the + terminal of the economizer control module.

Connect a DC milliammeter between terminals S_oof the economizer

control module and terminal S of the enthalpy sensor. The milliamme-

ter should indicate between 3 and 25 mA if the sensor is operating

properly. If the milliammeter indicates 0, the sensor may be wired

backwards. If any other readings are shown, replace the sensor.

close according to

enthalpy

readings.

LEGEND

LED

—

Light-Emitting Diode

Table 20 — Cooling Service Troubleshooting

PROBLEM

CAUSE

REMEDY

Compressor and

condenser fan

will not start.

Power failure.

Call power company.

Fuse blown or circuit breaker tripped.

Replace fuse or reset circuit breaker.

Replace component.

Defective thermostat, contactor, transformer, or control

relay.

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.

Compressor will not start Faulty wiring or loose connections in compressor circuit. Check wiring and repair or replace.

but condenser fan runs.

Compressor motor burned out, seized, or internal

overload open.

Determine cause. Replace compressor.

Defective run/start capacitor, overload, or start relay.

One leg of 3-phase power dead.

Determine cause and replace.

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 condenser.

Defective run/start capacitor, overload, or start relay.

Defective thermostat.

Faulty condenser-fan motor or capacitor.

Restriction in refrigerant system.

Compressor rotating in wrong direction.

Replace.

Locate restriction and remove.

Compressor makes

excessive noise

(48TJ014 scroll only)

Reverse the 3-phase power leads as described

on page 23.

Compressor operates

continuously.

Dirty air ﬁlter.

Replace ﬁlter.

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.

Clean coil or remove restriction.

Replace ﬁlter.

Condenser coil dirty or restricted.

Excessive head pressure. Dirty air ﬁlter.

Dirty condenser coil.

Clean coil.

Refrigerant overcharged.

Air in system.

Remove excess refrigerant.

Recover refrigerant, evacuate system, and recharge.

Determine cause and correct.

Check for leaks, repair, and recharge.

Replace compressor.

Condenser air restricted or air short-cycling.

Low refrigerant charge.

Compressor valves leaking.

Restriction in liquid tube.

High heat load.

Head pressure too low.

Remove restriction.

Excessive suction

pressure.

Check for source and eliminate.

Replace compressor.

Compressor valves leaking.

Refrigerant overcharged.

Recover excess refrigerant.

Replace ﬁlter.

Suction pressure too low. Dirty air ﬁlter.

Low refrigerant charge.

Check for leaks, repair, and recharge.

Remove source of restriction.

Metering device or low side restricted.

Insufficient evaporator airﬂow.

Increase air quantity. Check ﬁlter and replace if

necessary.

Temperature too low in conditioned area.

Field-installed ﬁlter drier restricted.

Unit in economizer mode.

Reset thermostat.

Replace.

Compressor no. 2

will not run.

Proper operation; no remedy necessary.

Table 21 — Heating Service Troubleshooting

PROBLEM

CAUSE

REMEDY

Burners will not

ignite.

Misaligned spark electrodes.

Check ﬂame ignition and sensor electrode positioning.

Adjust as needed.

No gas at main burners.

Check gas line for air purge as necessary. After purging

gas line of air, allow gas to dissipate for at least 5 min-

utes before attempting to relight unit.

Check gas valve.

Water in gas line.

Drain water and install drip leg to trap water.

Check power supply, fuses, wiring, and circuit breaker.

Check transformer. Transformers with internal overcur-

No power to furnace.

No 24 v power supply to control circuit.

rent protection require

resetting.

cool down period before

Miswired or loose connections

Burned-out heat anticipator in thermostat.

Broken thermostat wires.

Dirty air ﬁlter.

Check all wiring and wirenut connections.

Replace thermostat.

Run continuity check. Replace wires, if necessary.

Clean or replace ﬁlter as necessary.

Inadequate heating.

Gas input to unit too low.

Check gas pressure at manifold. Clock gas meter for

input. If too low, increase manifold pressure, or replace

with correct oriﬁces.

Unit undersized for application.

Restricted airﬂow.

Replace with proper unit or add additional unit.

Clean ﬁlter, replace ﬁlter, or remove any restrictions.

Blower speed too low.

Use high speed tap, increase fan speed, or install op-

tional blower, as suitable for individual units.

Limit switch cycles main burners.

Too much outdoor air.

Check rotation of blower, thermostat heat anticipator set-

tings, and temperature rise of unit. Adjust as needed.

Adjust minimum position.

Check economizer operation.

Poor ﬂame

characteristics.

Incomplete combustion (lack of combustion air)

results in:

Check all screws around ﬂue outlets and burner com-

partment. Tighten as necessary.

Aldehyde odors, CO, sooting ﬂame, or ﬂoating ﬂame.

Cracked heat exchanger.

Overﬁred unit — reduce input, change oriﬁces, or adjust

gas line or manifold pressure.

Check vent for restriction. Clean as necessary.

Check oriﬁce to burner alignment.

Burners will not

turn off.

Unit is locked into Heating mode for a one minute

minimum.

Wait until mandatory one minute time period has

elapsed or power to unit.

LEGEND AND NOTES FOR FIG. 48

IMPORTANT: Refer to unit wiring label for actual unit

wiring information.

AHA

—

Adjustable Heat Anticipator

Burner Relay

IFM

IGC

—

Indoor (Evaporator) Fan Motor

Integrated Gas Unit

Controller

Light Emitting Diode

Low-Pressure/Loss-of-Charge

Switch

Limit Switch

Main Gas Valve

Motor

Outdoor Air Thermostat

Outdoor-Fan Motor

Plug Assembly

Quadruple Terminal

Relay

Rollout Switch

Supply Air Thermostat

Sensor

Thermostat-Cooling

Thermostat-Heating

Transformer

Field Splice

Marked Wire

Contactor, Compressor

Capacitor

CAP

COMP

EPS

EQUIP

FPT

LED

LPS

—

Terminal (Marked)

Circuit Breaker

Cooling Compensator

Compressor Motor

Control Relay

Terminal (Unmarked)

—

MGV

MTR

OAT

OFM

Terminal Block

Splice

Diode

Enthalpy Control

Economizer Pressure Switch

Equipment

Splice (Marked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring

To indicate common potential

only, not to represent wiring

Freeze-Protection

Thermostat

Ground

Gas Valve Relay

High-Pressure Switch

Hall Effect Sensor

Ignitor

Induced-Draft Motor

Indoor (Evaporator) Fan

Contactor

GND

GVR

HPS

—

SAT

SEN

TRAN

IDM

IFC

NOTES:

1. If any of the original wire furnished must be replaced, it must be

replaced with type 90 C wire or its equivalent.

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

conditions.

5. Use copper conductors only.

6. TRAN is wired for 230 v unit. If unit is to be run with 208 v power

supply, disconnect BLK wire from 230 v tap (RED) and connect to

200 v tap (BLU). Insulate end of 230 v tap.

3. Thermostat: HH07AT170, 172, 174 and P272-2783

Subbase: HH93AZ176, 178 and P272-1882, 1883

4. Set heat anticipator for ﬁrst stage at 0.14 amp, second stage at

0.2 amp.

7. When economizer assembly is installed move GRA wire from con-

nection board (Y1) to GRA wire from PL6,5; move ORN wire from

connection board (Y2) to ORN wire from PL6,9, on economizer

assembly.

Fig. 48 — Typical Wiring Schematic and Component Arrangement

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

Book 1

PC 111

Catalog No. 564-934

Printed in U.S.A.

Form 48TJ-13SI

Pg 38

9-96

Replaces: 48TJ-10SI

Tab 1a 6a

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.:

DATE:

SERIAL NO.:

TECHNICIAN:

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

Ⅺ VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

Ⅺ REMOVE SHIPPING TIE DOWN BANDS ON COMPRESSOR (SIZE 014 ONLY) PER INSTALLATION

INSTRUCTIONS

Ⅺ VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS

Ⅺ CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

Ⅺ CHECK GAS PIPING FOR LEAKS

Ⅺ CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE

Ⅺ VERIFY THAT UNIT INSTALLATION IS LEVEL

Ⅺ CHECK FAN WHEELS AND PROPELLERS FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS

III. START-UP

ELECTRICAL

SUPPLY VOLTAGE

L1-L2

L2-L3

L3-L1

COMPRESSOR AMPS L1

INDOOR-FAN AMPS

TEMPERATURES

OUTDOOR-AIR TEMPERATURE

RETURN-AIR TEMPERATURE

COOLING SUPPLY AIR

GAS HEAT SUPPLY AIR

PRESSURES

GAS INLET PRESSURE

GAS MANIFOLD PRESSURE

REFRIGERANT SUCTION

REFRIGERANT DISCHARGE

IN. WG

IN. WG (HI FIRE)

PSIG — CIRCUIT NO. 1

PSIG — CIRCUIT NO. 2

Ⅺ VERIFY REFRIGERANT CHARGE USING CHARGING TABLES

Ⅺ VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION (48TJ014 ONLY)

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

Book 1

PC 111

Catalog No. 564-934

Printed in U.S.A.

Form 48TJ-13SI

Pg CL-1

9-96

Replaces: 48TJ-10SI

Tab 1a 6a

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