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Table 3A — Fan Performance Data, 48HJ015, 208/230, 460-V Units

AIRFLOW

(CFM)

EXTERNAL STATIC PRESSURE (in. wg)

0.2

0.4

0.6

0.8

1.0

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

3750

741

510

0.58

854

715

0.82

952

921

1.05

1041

1130

1.29

1124

1344

1.53

4000

773

647

0.74

882

859

0.98

978

1071

1.22

1064

1285

1.46

1145

1502

1.71

4250

806

796

0.91

912

1015

1.16

1004

1233

1.40

1089

1452

1.65

1167

1674

1.91

4500

839

958

1.09

942

1183

1.35

1032

1407

1.60

1114

1632

1.86

1191

1859

2.12

4750

873

1134

1.29

972

1365

1.56

1060

1595

1.82

1140

1825

2.08

1215

2056

2.34

5000

908

1323

1.51

1003

1560

1.78

1089

1796

2.05

1167

2032

2.32

1241

2268

2.58

5250

942

1527

1.74

1035

1769

2.02

1118

2011

2.29

1195

2252

2.57

1267

2494

2.84

5500

978

1745

1.99

1067

1992

2.27

1148

2240

2.55

1223

2487

2.83

1293

2733

3.11

5750

1013

1978

2.25

1099

2230

2.54

1179

2484

2.83

1252

2736

3.12

1321

2988

3.40

6000

1049

2227

2.54

1132

2483

2.83

1210

2742

3.12

1282

2999

3.42

1349

3257

3.71

6250

1085

2491

2.84

1166

2751

3.13

1241

3015

3.44

1312

3279

3.74

1378

3541

4.03

AIRFLOW

(CFM)

EXTERNAL STATIC PRESSURE (in. wg)

1.2

1.4

1.6

1.8

2.0

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

Rpm

Watts

Bhp

3750

1203

1562

1.78

1277

1784

2.03

1349

2010

2.29

1417

2240

2.55

1483

2473

2.82

4000

1222

1724

1.96

1294

1950

2.22

1364

2180

2.48

1431

2413

2.75

1495

2650

3.02

4250

1242

1900

2.16

1313

2129

2.43

1381

2362

2.69

1446

2599

2.96

1509

2839

3.23

4500

1264

2089

2.38

1333

2322

2.65

1399

2558

2.91

1463

2799

3.19

1525

3042

3.47

4750

1286

2290

2.61

1354

2528

2.88

1419

2769

3.15

1482

3012

3.43

1542

3259

3.71

5000

1310

2507

2.86

1376

2748

3.13

1440

2992

3.41

1501

3240

3.69

1560

3489

3.98

5250

1335

2737

3.12

1399

2983

3.40

1461

3230

3.68

1522

3481

3.97

5500

1360

2981

3.40

1423

3231

3.68

1484

3483

3.97

1543

3737

4.26

5750

1386

3241

3.69

1448

3495

3.98

1508

3750

4.27

6000

1413

3514

4.00

1474

3773

4.30

1532

4032

4.59

6250

1440

3803

4.33

1500

4066

4.63

1558

4330

4.93

LEGEND

Bhp

— Brake Horsepower Input to Fan

FIOP

— Factory-Installed Option

Watts — Input Watts to Motor
NOTES:
1. Boldface indicates standard operating range.

2.

indicates field-supplied motor and drive required.

3. All other numbers indicate field-supplied drive required.
4. Factory shipped motor drive range is 1194 to 1526 rpm. Other rpms

require a field-supplied drive.

5. Static pressure losses (i.e., economizer) must be added to exter-

nal static pressure before entering Fan Performance table. See
Table 7 for accessory/FIOP static pressure information.

6. Interpolation is permissible. Do not extrapolate.
7. Maximum continuous bhp is 4.25 and the maximum continuous

watts are 3775. Extensive motor and drive testing on these units
ensures that the full horsepower range of the motor can be uti-
lized with confidence. Using your fan motors up to the watts rating
shown will not result in nuisance tripping or premature motor fail-
ure. Unit warranty will not be affected.

13

Summary of Contents for 48EJ

Page 1: ...nd liquids in the vicinity of this or any other appliance What to do if you smell gas 1 DO NOT try to light any appliance 2 DO NOT touch any electrical switch or use any phone in your building 3 IMMEDIATELY call your gas supplier from a neigh bor s phone Follow the gas supplier s instructions 4 If you cannot reach your gas supplier call the fire department Disconnect gas piping from unit when pres...

Page 2: ... 29 1880 08 61 49 159 18 25 89 371 LEGEND COMP SECT Compressor Section NOTES 1 Roof curb accessory is shipped unassembled 2 Insulated panels 1 2 in thick neoprene coated 2 lb density 3 Dimensions in are in millimeters 4 Direction of airflow 5 Roof curb 18 gage steel 6 Attach all ductwork to roof curb 7 Field installation of sidewall is mandatory NOTE To prevent the hazard of stagnant water build u...

Page 3: ...f the National Fuel Gas Code ANSI Z223 1 American National Standards Institute Although unit is weatherproof guard against water from higher level runoff and overhangs Locate mechanical draft system flue assembly at least 4 ft from any opening through which combustion products could enter the building and at least 4 ft from any adjacent building When unit is located adjacent to public walkways flu...

Page 4: ...462 1238 1494 1323 1579 Maximum Allowable Rpm 1550 1550 1550 1550 Motor Pulley Pitch Diameter in 3 4 4 4 4 3 5 3 5 4 6 6 5 8 7 0 Fan Pulley Pitch Diameter in 5 2 6 4 7 9 7 9 Belt Quantity Type Length in 1 AX 42 1 B 45 1 BX 50 1 BX 51 Factory Speed Setting Rpm 1293 1279 1366 1451 Motor Hp Service Factor 3 7 1 15 3 1 15 5 1 15 10 1 15 Motor Frame Size 56H 56H 184T 215T FURNACE SECTION Rollout Switch...

Page 5: ...ory roof curb only 5 Minimum clearance a Rear 78 09 2134 for coil removal This dimension can be reduced to 48 09 1219 if conditions permit coil removal from the top b Left side 48 09 1219 for proper condenser coil airflow c Front 48 09 1219 for control box access d Right side 48 09 1219 for proper operation of damper and power exhaust if so equipped e Top 68 09 1829 to assure proper condenser fan ...

Page 6: ... if so equipped f Top 6809 1829 to assure proper condenser fan operation g Bottom 149 356 to combustible surfaces when not using curb h Control box side 3809 914 to ungrounded sur faces non combustible i Control box side 3869 1067 to block or concrete walls or other grounded surfaces j Local codes or jurisdiction may prevail 6 With the exception of clearance for the condenser coil and the damper p...

Page 7: ...ct work may be connected as shown in Fig 7 and 8 Attach all ductwork to roof curb and roof curb basepans Step 5 Install Flue Hood Flue hood is shipped secured to a baffle under main control box To install secure flue hood to access panel See Fig 9 NOTE When properly installed flue hood will line up with combustion fan housing See Fig 10 NOTE Do not drill in this area damage to basepan may result i...

Page 8: ... Fuel Gas Code ANSI Z223 1 Install manual gas shutoff valve with a 1 8 in NPT pres sure tap for test gage connection at unit Field gas piping must include sediment trap and union See Fig 13 Do not pressure test gas supply while connected to unit Always disconnect union before servicing Natural gas pressure at unit gas connection must not be less than 5 in wg or greater than 13 5 in wg Size gas sup...

Page 9: ...0 5 84 5 84 5 0 57 65 65 100 100 64 64 324 324 4 6 18 8 0 57 70 70 100 100 70 70 343 343 460 414 508 19 9 114 3 0 8 1 9 3 7 4 8 42 3 0 30 32 50 32 162 2 3 6 0 0 30 34 50 34 168 575 518 632 16 0 91 3 0 75 1 5 3 3 9 23 4 0 57 26 40 26 119 2 1 4 8 0 57 28 40 29 124 017 208 230 187 254 28 2 160 28 2 160 3 1 7 24 8 5 15 8 15 8 105 91 0 57 84 84 110 100 90 90 499 485 4 6 18 8 0 57 89 89 110 110 95 95 51...

Page 10: ...ed Step 9 Make Outdoor Air Inlet Adjustments MANUAL OUTDOOR AIR DAMPER All units except those equipped with a factory installed economizer have a manual outdoor air damper to provide ventilation air Damper can be preset to admit up to 25 outdoor air into return air compartment To adjust loosen securing screws and move damper to desired setting then retighten screws to secure damper Fig 16 OPTIONAL...

Page 11: ...ten screws 7 Insert outdoor air inlet screens and spacer in channel created by lower filter retainer and filter support bracket 8 Attach remaining shorter section of filter support bracket Fig 17 Economizer DamperAssembly End View LED Light Emitting Diode Fig 18 Economizer Motor Control Module Fig 19 Economizer Motor Control Module Location Fig 20 Outdoor Air Hood Component Location Fig 21 Seal St...

Page 12: ...an Perfor mance Adjustment section on page 19 Be sure that fans ro tate in the proper direction See Table 6 for air quantity lim its See Table 7 for static pressure drops for accessories and options See Fig 23 and 24 for fan performance using hori zontal adapter and power exhaust To alter fan performance see Performance Adjustment sections on page 19 Condenser Fans and Motors Condenser fans and mo...

Page 13: ... 1242 1900 2 16 1313 2129 2 43 1381 2362 2 69 1446 2599 2 96 1509 2839 3 23 4500 1264 2089 2 38 1333 2322 2 65 1399 2558 2 91 1463 2799 3 19 1525 3042 3 47 4750 1286 2290 2 61 1354 2528 2 88 1419 2769 3 15 1482 3012 3 43 1542 3259 3 71 5000 1310 2507 2 86 1376 2748 3 13 1440 2992 3 41 1501 3240 3 69 1560 3489 3 98 5250 1335 2737 3 12 1399 2983 3 40 1461 3230 3 68 1522 3481 3 97 5500 1360 2981 3 40...

Page 14: ...2 1900 2 16 1313 2129 2 43 1381 2362 2 69 1446 2599 2 96 1509 2839 3 23 4500 1264 2089 2 38 1333 2322 2 65 1399 2558 2 91 1463 2799 3 19 1525 3042 3 47 4750 1286 2290 2 61 1354 2528 2 88 1419 2769 3 15 1482 3012 3 43 1542 3259 3 71 5000 1310 2507 2 86 1376 2748 3 13 1440 2992 3 41 1501 3240 3 69 1560 3489 3 98 5250 1335 2737 3 12 1399 2983 3 40 1461 3230 3 68 1522 3481 3 97 5500 1360 2981 3 40 142...

Page 15: ...928 3 3 1238 3332 3 7 1313 3755 4 2 1385 4192 4 7 1454 4643 5 2 5700 1175 3158 3 5 1251 3569 4 0 1324 3999 4 5 1395 4445 5 0 1462 4906 5 5 6000 1188 3398 3 8 1262 3814 4 3 1334 4250 4 8 1403 4704 5 3 1470 5173 5 8 6300 1203 3654 4 1 1275 4075 4 6 1344 4517 5 1 1412 4976 5 6 1478 5453 6 1 6400 1221 3944 4 4 1290 4370 4 9 1358 4817 5 4 1424 5283 5 6 1489 5765 6 5 6900 1238 4245 4 8 1305 4676 5 2 137...

Page 16: ...39 6 88 7500 1309 5143 5 58 1372 5597 6 08 1434 6067 6 59 1494 6558 7 12 1548 7014 7 62 8000 1349 5833 6 33 1409 6297 6 84 1467 6779 7 36 1529 7313 7 94 8500 1390 6600 7 17 1447 7077 7 68 1504 7571 8 22 9000 1433 7446 8 08 1488 7938 8 62 9500 1478 8378 9 10 10000 1524 9396 10 20 LEGEND Bhp Brake Horsepower Input to Fan FIOP Factory Installed Option Watts Input Watts to Motor NOTES 1 Boldface indic...

Page 17: ...the 48HJE015 48HJE017 and HJD025 units have 2 stages of heat First Stage Turn unit power on Open manual gas line valve Set thermostat system switch at HEAT or AUTO po sition and set fan switch to AUTO position for heating First stage thermostat calls for heat Time delay relay for evaporator fan begins timer sequence Induced draft relay closes and induced draft motor starts Pressure switch closes a...

Page 18: ...ve motor and wheel assembly by removing screws holding motor mounting plate to top of com bustion fan housing Fig 25 and 26 The motor and wheel assembly will slide up and out of the fan housing Remove the blower wheel from the motor shaft and clean with a de tergent or solvent Replace motor and wheel assembly EVAPORATOR COIL Clean as required with commer cial coil cleaner CONDENSER COIL Clean cond...

Page 19: ...y of pulley hub and tighten setscrew 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 SERVICE AND REPLACEMENT See Fig 29 NOTE To remove belts only follow Steps 1 7 1 Remove filter and supply air section panels 2 Remove unit top cover 3 Remove coil guard 4 Loosen screws A and B on both si...

Page 20: ...justment 48HJ015 017 UNITS Fig 31 1 Shut off unit power supply 2 Remove access panel s closest to the fan to be adjusted 3 Loosen fan hub setscrews 4 Adjust the fan height on the shaft using a straightedge placed across the fan orifice 5 Tighten setscrews and replace panel s 6 Turn on unit power 48HJ025 UNITS Fig 32 1 Shut off unit power supply 2 Remove fan top grille assembly and loosen fan hub s...

Page 21: ...temperature test results 1 LED should be off 2 Motor drives toward closed Power Failure Dampers have a spring return In event of power failure dampers will return to fully closed position until power is restored Do not manually operate damper motor Refrigerant Charge Amount of refrigerant charge is listed on unit nameplate and in Table 1 Refer to Carrier GTAC II Module 5 Charging Recovery Recyclin...

Page 22: ...d to valve terminals 3 and 4 the pilot valve opens to the preset position When power is sup plied to terminals 1 and 2 the main valve opens to its preset position The regular factory setting is stamped on the valve body 3 5 in wg To adjust regulator 1 Set thermostat at setting for no call for heat 2 Turn main gas valve to OFF position 3 Remove 1 8 in pipe plug from manifold or gas valve pres sure ...

Page 23: ...uid refrigerant by oil in the crankcase when the compressor is idle Since power for the crankcase heaters is drawn from the unit incoming power main unit power must be on for the heaters to be energized IMPORTANT After a prolonged shutdown or serv ice job energize the crankcase heaters for 24 hours before starting the compressors Compressor Lockout If any of the safeties high low pressure freeze p...

Page 24: ...Fig 38 Typical Wiring Schematic 48HJ025 Shown 24 ...

Page 25: ...Fig 38 Typical Wiring Schematic 48HJ025 Shown cont 25 ...

Page 26: ...Fig 39 Typical Component Arrangement 48HJ025 Shown 26 ...

Page 27: ...S Rollout Switch SN Sensor SW Switch TB Terminal Block TC Thermostat Cooling TDR Time Delay Relay TH Thermostat Heating TRAN Transformer Terminal Marked Terminal Unmarked Terminal Block Splice Splice Marked Splice Field Supplied Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wiring To Indicate Common Potential Only Not To Represent Wiring NOTES 1 Compressor and fan mo...

Page 28: ......

Page 29: ......

Page 30: ...e All programs include a video cassette and or slides and a companion booklet Use these for self teaching or to conduct full training sessions For a free Service Training Material Catalog STM call 1 800 962 9212 Ordering instructions are included Copyright 1995 Carrier Corporation Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and with...

Page 31: ......

Page 32: ...LTAGE L1 L2 L2 L3 L3 L1 COMPRESSOR AMPS COMPRESSOR NO 1 L1 L2 L3 COMPRESSOR NO 2 L1 L2 L3 SUPPLY FAN AMPS EXHAUST FAN AMPS TEMPERATURES OUTDOOR AIR TEMPERATURE F DB Dry Bulb RETURN AIR TEMPERATURE F DB F WB Wet Bulb COOLING SUPPLY AIR F GAS HEAT SUPPLY AIR F PRESSURES GAS INLET PRESSURE IN WG GAS MANIFOLD PRESSURE STAGE NO 1 IN WG STAGE NO 2 IN WG REFRIGERANT SUCTION CIRCUIT NO 1 PSIG CIRCUIT NO 2...

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