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Carrier 50HJQ004-007, Installation, Start-Up And Service Instructions Manual

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Carrier 50HJQ004-007 Installation, Start-Up And Service Instructions Manual Download Page 24

24

Table 16 — Fan Performance 50HJQ006 — Vertical Discharge Units; High-Static Motor (Belt Drive)

LEGEND

*Motor drive range: 1300 to 1685 rpm. All other rpms require field-

supplied drive.

NOTES:

1.

Boldface 

indicates field-supplied drive is required.

2.

 indicates field-supplied motor and drive are required.

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

See Table 8 for accessory/FIOP static pressure information.

4. Maximum continuous bhp is 2.9 and the maximum continuous

watts are 2615. Extensive motor and electrical testing on these
units ensures that the full range of the motor can be utilized
with confidence. Using your fan motors up to the wattage rat-
ings shown will not result in nuisance tripping or premature
motor failure. Unit warranty will not be affected. See Tables 6
and 7 for additional information.

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

your Carrier representative for details.

6. Interpolation is permissible. Do not extrapolate.

AIRFLOW

(Cfm)

EXTERNAL STATIC PRESSURE (in. wg)

0.2

0.4

0.6

0.8

1.0

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

1500

789

0.40

429

896

0.53

572

990

0.67

705

1072

0.83

869

1153

1.00

1032

1600

826

0.46

501

931

0.61

645

1020

0.75

797

1101

0.91

961

1178

1.09

1134

1700

865

0.54

582

966

0.69

736

1051

0.84

899

1133

1.01

1053

1206

1.18

1237

1800

905

0.62

674

1002

0.78

838

1084

0.93

1001

1163

1.10

1155

1235

1.29

1349

1900

946

0.72

777

1037

0.88

940

1119

1.04

1124

1194

1.21

1288

1266

1.40

1461

2000

984

0.82

889

1072

0.98

1063

1154

1.16

1247

1226

1.33

1431

1297

1.53

1604

2100

1024

0.93

1012

1108

1.10

1196

1192

1.29

1380

1259

1.47

1574

1327

1.66

1758

2200

1064

1.05

1145

1145

1.22

1328

1225

1.43

1523

1294

1.62

1737

1359

1.80

1931

2300

1104

1.18

1288

1183

1.36

1502

1260

1.57

1686

1330

1.78

1901

1392

1.97

2115

2400

1145

1.32

1441

1222

1.45

1645

1296

1.73

1860

1365

1.94

2074

1426

2.15

2310

2500

1186

1.48

1604

1262

1.68

1819

1331

1.80

2044

1400

2.12

2269

1461

2.34

2504

AIRFLOW

(Cfm)

EXTERNAL STATIC PRESSURE (in. wg)

1.2

1.4

1.6

1.8

2.0

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

Rpm

Bhp

Watts

1500

1221

1.17

1216

1256

1.30

1492

1280

1.32

1757

1320

1.22

1944

1360

1.33

2164

1600

1252

1.27

1308

1311

1.45

1523

1340

1.58

1800

1380

1.61

2047

1421

1.76

2280

1700

1278

1.37

1420

1345

1.57

1615

1397

1.76

1850

1424

1.89

2070

1467

2.06

2305

1800

1303

1.48

1553

1371

1.69

1747

1433

1.90

1952

1480

2.09

2197

1524

2.28

2446

1900

1330

1.59

1676

1396

1.80

1891

1460

2.03

2095

1517

2.25

2358

1562

2.46

2625

2000

1362

1.73

1809

1422

1.94

2034

1485

2.16

2258

1544

2.40

2542

1590

2.62

2830

2100

1393

1.80

1952

1452

2.08

2167

1510

2.31

2501

1569

2.55

2821

1616

2.79

3141

2200

1423

2.02

2126

1483

2.24

2350

1538

2.46

2688

1595

2.71

3031

1643

2.96

3375

2300

1454

2.18

2310

1515

2.41

2698

1569

2.64

3091

1622

2.88

3486

1671

3.15

3881

2400

1485

2.36

2524

1544

2.59

2948

1601

2.84

3379

1652

3.07

3715

—

—

—

2500

1518

2.55

3010

1575

2.78

3522

1631

3.03

4036

1684

3.28

3970

—

—

—

Bhp

—

Brake Horsepower Input to Fan

FIOP

—

Factory-Installed Option

Watts —

Input Watts to Motor

Summary of Contents for 50HJQ004-007

Page 1: ...ofing felt and counter flashing as shown Ductwork must be attached to curb not to the unit If electric or control power is to be routed through the basepan attach the accessory thru the bottom service connections to the basepan and roof curb in accordance with the accessory instal lation instructions Connections must be installed before unit is set on roof curb Curb should be level This is necessa...

Page 2: ... CRBTMPWR003A00 1 2 12 7 NPT 3 4 19 NPT CRBTMPWR004A00 3 4 19 NPT 11 4 31 7 NPT NOTES 1 Roof curb accessory is shipped disassembled 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 7 Direction of airflow 8 8 Connector packages CRBTMPWR001A00 and 2A00 are for thru the curb ...

Page 3: ...ed in base rails as shown in Fig 4 and 5 Refer to rigging instructions on unit POSITIONING Maintain clearance around and above unit to provide proper airflow and service access See Fig 5 A properly positioned unit will have the following clear ances 1 4 in clearance between roof curb and base rails on each side and duct end of unit 1 4 in clearance between roof curb and condenser end of unit See F...

Page 4: ...electric heat 1 in clearance to ductwork for 1 ft b Outdoor coil for proper airflow 36 in one side 12 in the other The side getting the greater clearance is optional c Overhead 60 in to assure proper condenser fan operation d Between units control box side 42 in per NEC e Between unit and ungrounded surfaces control box side 36 in per NEC f Between unit and block or concrete walls and other ground...

Page 5: ... On 3 phase units voltages between phases must be bal anced within 2 and the current within 10 Use the formula shown in Tables 2A 2D Note 2 on page 10 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 invalidates any applicable Carrier warranty NOTE If acces...

Page 6: ...g Type Ball Ball Ball Ball Maximum Allowable Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter Min Max in Std 1 9 2 9 1 9 2 9 2 4 3 4 2 4 3 4 High Static 2 8 3 8 2 8 3 8 3 4 4 4 3 4 4 4 Nominal Motor Shaft Diameter in Std 1 2 1 2 5 8 5 8 High Static 5 8 5 8 5 8 5 8 Fan Pulley Pitch Diameter in Std 4 5 4 0 4 5 3 7 High Static 4 5 4 5 4 5 4 5 Belt Quantity Type Length in Std 1 A 34 1 A 34 1 A 39 1...

Page 7: ...6 15 6 39 5 42 0 45 45 38 40 126 128 6 5 8 7 18 0 20 9 45 0 48 6 50 50 43 46 130 133 12 0 16 0 33 3 38 5 64 1 70 6 70 80 60 66 146 151 15 8 21 0 43 9 50 5 77 4 85 6 90 100 72 80 156 163 460 3 60 414 508 7 4 49 5 0 4 2 2 11 9 15 12 57 6 0 7 2 20 9 25 20 64 11 5 13 8 29 1 30 27 70 14 0 16 8 32 9 35 31 73 23 0 27 7 46 5 50 43 84 50HJQ006 5 Tons 208 230 1 60 187 254 28 8 169 0 1 5 8 8 46 3 46 3 50 50 ...

Page 8: ...5 78 3 86 5 80 90 73 81 186 192 460 3 60 414 508 7 4 49 5 0 4 2 6 12 3 15 12 71 6 0 7 2 21 3 25 20 78 11 5 13 8 29 5 30 28 85 14 0 16 8 33 3 35 31 88 23 0 27 7 46 9 50 44 99 50HJQ006 5 Tons 208 230 3 60 187 254 17 3 123 0 1 5 7 5 30 6 30 6 35 35 30 30 187 187 4 9 6 5 13 6 15 6 47 6 50 1 50 60 46 48 200 202 7 9 10 5 21 9 25 3 58 0 62 3 60 70 55 59 209 212 12 0 16 0 33 3 38 5 72 3 78 8 80 80 69 75 2...

Page 9: ...5 6 44 3 46 8 45 50 43 45 131 133 6 5 8 7 18 0 20 9 49 8 53 4 50 60 48 52 135 138 12 0 16 0 33 3 38 5 68 9 75 4 70 80 66 72 150 156 15 8 21 0 43 9 50 5 82 2 90 4 90 100 78 86 161 168 460 3 60 414 508 7 4 49 5 0 4 2 2 14 0 15 14 59 6 0 7 2 23 0 25 22 66 11 5 13 8 31 3 35 30 73 14 0 16 8 35 0 40 33 76 23 0 27 7 48 7 50 46 86 50HJQ006 5 Tons 208 230 1 60 187 254 28 8 169 0 1 5 8 8 51 1 51 1 60 60 50 ...

Page 10: ... 30 28 76 14 0 16 8 33 6 35 31 79 50HJQ005 4 Tons 208 230 3 60 187 254 13 5 99 0 0 7 5 8 28 2 28 2 30 30 29 29 146 146 4 9 6 5 13 6 15 6 45 2 47 7 50 50 44 46 160 162 6 5 8 7 18 0 20 9 50 7 54 3 60 60 49 53 164 167 12 0 16 0 33 3 38 5 69 8 76 3 70 80 67 73 180 185 15 8 21 0 43 9 50 5 83 1 91 3 90 100 79 87 190 197 460 3 60 414 508 7 4 49 5 0 4 2 6 14 4 15 14 73 6 0 7 2 23 4 25 23 80 11 5 13 8 31 7...

Page 11: ...control wires through the hole provided in the corner post 3 Feed wire through the raceway built into the corner post to the 24 v barrier located on the left side of the control box See Fig 8 The raceway provides the UL required clearance between the high and low voltage wiring DEFROST BOARD The defrost board timer is set for a 30 minute defrost cycle from the factory To adjust to a 50 or 90 minut...

Page 12: ...arge block off plate over the opening on the access panel Block off plate MUST be installed before installing hood assembly See Fig 13 6 Insert economizer plug into economizer harness Remove tape from barometric relief damper See Fig 14 Remove shipping screw see Fig 12 7 If ventilation air is not required proceed to Step 8 If ven tilation air is required determine the minimum position setting for ...

Page 13: ... Block Off Plate Fig 14 Durablade Economizer Installed in Unit UNIT TOP OAT TERMINALS ARE UP OUTSIDE AIR SCREEN MINIMUM POSITIO N OPEN 3 1 T P P1 T1 4 2 5 S S O D C TR B REV B 1 9 8 8 1 8 A H U M I D I T Y 90 70 60 30 10 D C B A 60 65 70 75 55 50 85 80 DAMPER DAMPER CLOSED OPEN OUTDOOR TEMP F REV 97 3672 CW SETPOINTS CCW CONTACTS SHOWN IN HIGH ENTHALPY RUSH AT 24VAC 3 mA MIN AT 11 VDC CONTACT RATI...

Page 14: ...bracket Assemble the exhaust air hood to the outdoor air opening panel as shown in Fig 21 using the screws provided Do not attach hood assembly to unit at this time 4 Install the 1 8 x 3 4 in seal strip on the outdoor air hood top and side panels Assemble the outdoor air hood to the outdoor air opening panel as shown in Fig 22 using the screws provided Do not attach hood assembly to the unit at th...

Page 15: ...ng harness Refer to wiring diagrams Fig 26 and 27 Also refer to Fig 28 if installing an accessory power exhaust 9 Install the complete hood assembly on the unit and secure using the screws provided 10 Remove the indoor fan motor access panel See Fig 29 11 Mount the supply air temperature sensor to the lower left portion of the indoor blower housing with the two 2 screws provided see Fig 30 Connect...

Page 16: ...RETURN AIR SENSOR VIOLET WHITE RED OAT COM OAH 15 V RAT COM RAH 15 V ECONOMI ER CONTROLLER PINK TEMP TEMP VIOLET SUPPLY AIR TEMPERATURE SENSOR V 24 COM VAC SENSOR CO2 COM DAT COM REM POT COM LED COM CO2 CO2 Fig 27 EconoMi er Sensor Wiring Fig 26 EconoMi er Wiring LEGEND OAT Outdoor Air Thermostat ...

Page 17: ... 230VAC X4 X1 HT01AH850 460 VAC RED H1 GRAY H2 SECONDARY 230VAC X4 X1 HT01AH859 575 VAC 23 13 11 21 230VAC OR BLACK L1 BLUE L2 COMPRESSOR 1 CONTACTOR FIELD SUPPLIED WIRING GREEN GND 2 x 4 IN HANDY BOX X3 X2 H2 H3 X2 X3 TO FUSED DISCONNECT FAN 1 FAN 2 CAPACITOR 2 CAPACITOR 1 RELAY 2 RELAY 1 4 PIN CONNECTOR PLUG HIGH VOLTAGE 3 PIN CONNECTOR PLUG LOW VOLTAGE Fig 28 Wiring Diagram for Power Exhaust Sy...

Page 18: ...owing 1 The indoor fan must be on to set the ventilation air Either put the thermostat in the continuous fan mode or jumper the R and G terminals at the rooftop unit connection board 2 Locate the minimum position MIN POS potentiometer Turn the potentiometer full CCW to fully close the out door air dampers Turn the potentiometer gradually clockwise CW to the desired position See Fig 31 3 Replace th...

Page 19: ...nd tighten setscrew See Table 1 for speed change for each full turn of pulley flange To align fan and motor pulleys see Fig 34 1 Loosen fan pulley setscrews 2 Slide fan pulley along fan shaft 3 Make angular alignment by loosening motor from mounting To adjust belt tension 1 Loosen fan motor mounting nuts 2 Slide motor mounting plate away from fan scroll for proper belt tension 5 8 in deflection wi...

Page 20: ...9 Indoor Fan Motor Efficiency Single phase 3 phase NOTE Convert watts to bhp using the following formula UNIT 50HJQ UNIT PHASE MAXIMUM CONTINUOUS BHP MAXIMUM OPERATING WATTS UNIT VOLTAGE MAXIMUM AMP DRAW 004 Single 1 20 1000 208 230 5 1 Three 1 20 1000 208 230 5 1 460 2 3 005 Single 1 20 1000 208 230 5 1 Three 1 20 1000 208 230 5 1 460 2 3 006 Single 1 80 2120 208 230 9 2 Three 2 40 2120 208 230 6...

Page 21: ...54 0 29 288 826 0 38 378 891 0 43 428 942 0 48 477 991 0 53 527 1047 0 60 597 1400 810 0 35 348 868 0 45 448 937 0 51 507 984 0 57 567 1032 0 62 617 1067 0 67 666 1500 841 0 42 418 911 0 53 527 985 0 61 607 1029 0 66 656 1073 0 72 716 1109 0 77 766 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 0 7 0 8 0 9 1 0 1 1 1 2 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts ...

Page 22: ...0 52 546 836 0 60 630 832 0 69 720 828 0 77 809 1019 0 93 950 1058 1 02 1037 1097 1 10 1124 2000 828 0 60 630 870 0 68 714 864 0 77 809 858 0 86 904 1046 1 03 1053 1085 1 12 1139 1124 1 21 1237 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 1 0 1 1 1 2 1 4 1 6 1 8 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1200 1008 0 67 704 1052 0 73 762 1096 0 78 820 1134 0 8...

Page 23: ...349 1600 1159 1 02 1114 1231 1 20 1298 1311 1 39 1482 1395 1 59 1615 1700 1184 1 12 1206 1258 1 30 1400 1322 1 49 1604 1403 1 69 1799 1800 1235 1 29 1318 1303 1 48 1512 1371 1 69 1727 1433 1 90 1942 1900 1266 1 40 1431 1330 1 59 1625 1396 1 81 1850 1460 2 03 2074 2000 1297 1 53 1564 1362 1 73 1768 1422 1 94 1983 1485 2 16 2207 2100 1327 1 66 1696 1393 1 87 1911 1452 2 08 2126 1510 2 31 2361 2200 1...

Page 24: ... 777 1037 0 88 940 1119 1 04 1124 1194 1 21 1288 1266 1 40 1461 2000 984 0 82 889 1072 0 98 1063 1154 1 16 1247 1226 1 33 1431 1297 1 53 1604 2100 1024 0 93 1012 1108 1 10 1196 1192 1 29 1380 1259 1 47 1574 1327 1 66 1758 2200 1064 1 05 1145 1145 1 22 1328 1225 1 43 1523 1294 1 62 1737 1359 1 80 1931 2300 1104 1 18 1288 1183 1 36 1502 1260 1 57 1686 1330 1 78 1901 1392 1 97 2115 2400 1145 1 32 144...

Page 25: ...78 0 85 795 1024 0 93 859 1108 1 10 998 1190 1 29 1156 1259 1 47 1310 2200 1021 0 97 891 1064 1 05 956 1145 1 22 1097 1225 1 43 1275 1294 1 62 1439 2300 1064 1 10 998 1104 1 18 1064 1183 1 36 1216 1260 1 57 1396 1330 1 78 1578 2400 1107 1 24 1114 1145 1 32 1182 1222 1 52 1353 1296 1 73 1534 1365 1 94 1718 2500 1150 1 39 1241 1186 1 48 1318 1262 1 68 1491 1331 1 89 1674 1400 2 12 1875 2600 1193 1 5...

Page 26: ...2 1447 1359 1 81 1595 2300 1104 1 18 1140 1183 1 36 1233 1260 1 57 1499 1330 1 78 1526 1392 1 97 1709 2400 1145 1 32 1224 1222 1 52 1378 1296 1 73 1604 1365 1 94 1683 1426 2 15 1892 2500 1186 1 48 1335 1262 1 68 1517 1331 1 89 1718 1400 2 12 1910 1461 2 34 2076 2600 1228 1 66 1482 1301 1 86 1604 1367 2 07 1823 1435 2 31 2136 1497 2 54 2283 2700 1269 1 83 1595 1341 2 05 1691 1404 2 26 1936 1471 2 5...

Page 27: ...8 938 0 40 398 1300 703 0 20 239 752 0 27 269 808 0 32 318 868 0 37 368 916 0 41 408 963 0 45 448 1400 725 0 29 288 776 0 31 308 845 0 38 378 891 0 42 418 937 0 47 467 983 0 51 507 1500 755 0 33 328 816 0 38 378 870 0 43 428 924 0 48 477 969 0 53 527 1014 0 58 577 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 0 7 0 8 0 9 1 0 1 1 1 2 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watt...

Page 28: ...4 988 1900 743 0 48 504 790 0 55 578 838 0 62 651 886 0 69 725 980 0 86 904 1023 0 95 993 1066 1 03 1082 2000 778 0 55 578 836 0 62 651 875 0 70 730 913 0 77 809 1004 0 94 988 1046 1 03 1082 1088 1 12 1177 AIRFLOW Cfm EXTERNAL STATIC PRESSURE in wg 1 0 1 1 1 2 1 4 1 6 1 8 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1200 999 0 66 674 1018 0 67 685 1036 0 68 6...

Page 29: ...099 0 96 981 1900 802 0 52 531 854 0 58 593 953 0 73 746 1046 0 90 920 1126 1 06 1083 2000 840 0 60 613 900 0 66 674 984 0 82 838 1073 0 99 1012 1154 1 16 1185 2100 878 0 69 705 923 0 75 766 1015 0 91 930 1101 1 08 1104 1182 1 27 1298 2200 916 0 78 797 958 0 85 869 1046 1 01 1032 1129 1 19 1216 1209 1 39 1420 2300 954 0 89 910 993 0 96 981 1079 1 13 1155 1160 1 31 1339 1237 1 51 1543 2400 993 1 00...

Page 30: ...046 0 90 1093 1126 1 06 1271 1201 1 23 1471 2000 900 0 66 862 984 0 82 1030 1073 0 99 1219 1154 1 16 1397 1226 1 33 1608 2100 923 0 75 977 1015 0 91 1156 1101 1 08 1355 1182 1 27 1545 1252 1 45 1744 2200 958 0 85 1103 1046 1 01 1282 1129 1 19 1503 1209 1 39 1702 1280 1 58 1902 2300 993 0 96 1240 1079 1 13 1429 1160 1 31 1650 1237 1 51 1870 1309 1 71 2070 2400 1029 1 07 1387 1112 1 25 1524 1190 1 4...

Page 31: ...9 958 0 85 795 1046 1 01 924 1129 1 19 1072 1209 1 39 1241 2300 954 0 89 827 993 0 96 883 1079 1 13 1022 1160 1 31 1173 1237 1 51 1344 2400 993 1 00 916 1029 1 07 973 1112 1 25 1123 1190 1 43 1275 1264 1 63 1447 2500 1031 1 13 1022 1066 1 20 1081 1145 1 39 1241 1220 1 57 1396 1292 1 77 1569 2600 1070 1 26 1131 1103 1 34 1199 1179 1 52 1353 1251 1 71 1517 1322 1 92 1700 2700 1109 1 41 1258 1140 1 4...

Page 32: ...280 1 58 1508 2300 993 0 96 1140 1079 1 13 1224 1160 1 31 1387 1237 1 51 1473 1309 1 71 1648 2400 1029 1 07 1224 1112 1 25 1396 1190 1 43 1447 1264 1 63 1630 1336 1 85 1726 2500 1066 1 20 1335 1145 1 39 1465 1220 1 57 1552 1292 1 77 1761 1363 2 00 1805 2600 1103 1 34 1482 1179 1 52 1560 1251 1 71 1735 1322 1 92 1858 1390 2 15 1936 2700 1140 1 48 1595 1212 1 67 1726 1283 1 87 1892 1352 2 09 1954 14...

Page 33: ...e 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 pres sure does not rise to normal levels 1 Note that the indoor fan 006 and 007 three phase units only is probably also rotating in the wrong direction 2 Turn off power to the unit and tag disconnect 3 R...

Page 34: ...amper to re main in an intermediate open position If the outdoor air alone cannot satisfy the cooling require ments of the conditioned space economizer cooling is integrat ed with mechanical cooling providing second stage cooling The compressor and outdoor fan will be energized and the position of the economizer damper will be determined by the supply air temperature When the second stage of cooli...

Page 35: ...ter access panel and indoor coil access panel 2 If accessory economizer is installed remove economizer by disconnecting Molex plug and removing economizer mounting screws 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 sec...

Page 36: ...ustment Refer to Optional Econo mizer sections on pages 12 and 14 Refrigerant Charge Amount of refrigerant charge is listed on unit nameplate also refer to Table 1 Refer to Carrier Refrigerant Service Techniques Manual Refrigerants section Unit panels must be in place when unit is operating during charging procedure Compressor must run a minimum of 10 minutes before checking or adjusting refrigera...

Page 37: ...37 Fig 39 Cooling Charging Chart 50HJQ004 Fig 41 Cooling Charging Chart 50HJQ006 Fig 40 Cooling Charging Chart 50HJQ005 Fig 42 Cooling Charging Chart 50HJQ007 ...

Page 38: ...ermostat Faulty outdoor fan cooling or indoor fan heating motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor operates continuously Dirty air filter Replace filter Unit undersized for load Decrease load or increase unit size Thermostat set too low Reset thermostat Low refrigerant charge Locate leak repair and recharge Leaking valves in compressor R...

Page 39: ...settings and the economizer control board wir ing 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...

Page 40: ...y Y2 being energized before Y1 Actuator fault Check the wiring between the EconoMi er controller and the actuator Hold CONFIG button between 3 and 10 seconds to verify the actuator s operation This process takes 3 minutes to complete EconoMi er operation limited to minimum position Minimum position set incorrectly Verify that the MIN POS is set greater than zero Adjust MIN POS to 100 to verify ope...

Page 41: ...g Valve Solenoid SAT Supply Air Thermostat SW1 Switch Fully Open SW2 Switch Fully Closed SW3 Switch Min Vent Position SW4 Switch Max Vent Position TB Terminal Block TC Thermostat Cooling TH Thermostat Heating TRAN Transformer Field Splice Marked Wire Terminal Marked Terminal Unmarked Terminal Block Splice Splice Marked Factory Wiring Field Control Wiring Field Power Wiring Accessory or Optional Wi...

Page 42: ...42 Fig 43 Typical Wiring Schematic 50HJQ006 007 Shown ...

Page 43: ...43 Fig 43 Typical Wiring Schematic 50HJQ006 007 Shown cont ...

Page 44: ...d skills programs are available using popular video based formats and materials All include video and or slides plus companion book Classroom Service Training which includes hands on experience with the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting and fewer callbacks Course descriptions and schedules are in our catalog CALL FOR FREE CATALO...

Page 45: ......

Page 46: ...nue or change at any time specifications or designs without notice and without incurring obligations PC 111 Catalog No 535 00005 Printed in U S A Form 50HJQ 6SI Pg 46 11 00 Replaces 50HJQ 1SI Copyright 2000 Carrier Corporation Book 1 4 Tab 5a 5a ...

Page 47: ......

Page 48: ...rk in box as each item is completed VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS CHECK THAT INDOOR AIR FILTER IS CLEAN AND IN PLACE VERIFY THAT UNIT INSTALLATION IS LEVEL CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS CHECK PULLEY ALIGNMENT AND BELT TENSION REFER INSTA...

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