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Table 8—Wet Coil Air Delivery (Deduct 10 percent for 208v)*

Horizontal and Downflow Discharge

Unit 50GS018-060

230 AND 460 VOLT

Unit

Motor

Speed

External Static Pressure (in. wg)

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

018

Low

Watts

227

212

196

177

165

153

-

-

-

-

-

Cfm

1000

915

825

710

530

340

-

-

-

-

-

Med

Watts

-

-

-

-

-

-

-

-

-

-

-

Cfm

-

-

-

-

-

-

-

-

-

-

-

High

Watts

287

275

266

253

242

234

226

-

-

-

-

Cfm

1150

1032

963

807

698

503

250

-

-

-

-

024

Low

Watts

280

275

270

267

264

262

260

-

-

-

-

Cfm

880

825

765

693

600

450

281

-

-

-

-

Med

Watts

380

375

365

360

355

350

344

335

312

-

-

Cfm

1136

1085

1010

946

865

787

650

495

360

-

-

High

Watts

485

475

470

460

455

445

437

430

415

385

-

Cfm

1415

1332

1266

1180

1100

1000

900

780

480

256

-

030

Low

Watts

280

275

270

267

264

262

260

-

-

-

-

Cfm

880

825

765

693

600

450

281

-

-

-

-

Med

Watts

380

375

365

360

355

350

344

335

312

-

-

Cfm

1136

1085

1010

946

865

787

650

495

360

-

-

High

Watts

485

475

470

460

455

445

437

430

415

385

-

Cfm

1415

1332

1266

1180

1100

1000

900

780

480

256

-

036

Low

Watts

576

566

556

538

512

497

481

466

450

435

-

Cfm

1385

1297

1220

1165

1090

995

905

846

715

609

-

Med

Watts

680

671

660

624

604

620

602

558

534

512

496

Cfm

1572

1460

1375

1305

1286

1192

1125

1046

891

800

730

High

Watts

810

800

790

782

766

742

723

709

688

661

627

Cfm

1685

1620

1560

1486

1389

1322

1284

1170

1000

897

800

042

Low

Watts

-

675

660

650

640

630

620

610

595

580

-

Cfm

-

1387

1326

1275

1204

1142

1081

995

918

850

-

Med

Watts

-

886

855

825

795

778

765

750

735

718

700

Cfm

-

1458

1406

1350

1285

1224

1163

1091

1013

932

870

High

Watts

-

-

-

1000

950

925

910

890

875

855

833

Cfm

-

-

-

1488

1424

1360

1296

1233

1148

1071

1005

048

Low

Watts

-

727

712

700

688

666

644

622

595

569

-

Cfm

-

1640

1600

1575

1505

1450

1390

1300

1205

1145

-

Med

Watts

-

853

836

821

807

782

756

730

699

667

640

Cfm

-

1860

1830

1770

1700

1642

1565

1482

1385

1290

1210

High

Watts

-

979

959

943

927

897

868

838

802

766

730

Cfm

-

2090

2048

1997

1922

1845

1750

1600

1550

1425

1380

060

Low

Watts

1033

949

864

836

822

808

772

737

705

674

642

Cfm

2050

2000

1945

1905

1880

1820

1775

1695

1627

1530

1480

Med

Watts

1084

1054

1024

994

971

955

928

897

867

835

803

Cfm

2248

2179

2110

2058

2000

1932

1885

1829

1740

1638

1569

High

Watts

-

-

1184

1152

1120

1102

1084

1056

1029

997

965

Cfm

-

-

2278

2207

2124

2041

2000

1960

1856

1748

1645

* Air delivery values are based on operating voltage of 230v or 460v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops to obtain
static pressure available for ducting.

NOTES:
1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occur at airflows below

this point.

2. Dashes indicate portions of table that are beyond the blower motor capacity or are not recommended.

19

Summary of Contents for 50gs sizes 018-060

Page 1: ...T 24 EVAPORATOR AIRFLOW 24 METERING DEVICE ACUTROL DEVICE 24 LIQUID LINE STRAINER 24 Troubleshooting 24 Start Up Checklist 24 NOTE TO INSTALLER Before the installation READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY Also make sure the User s Manual and Replacement Guide are left with the unit after installation SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be ...

Page 2: ...5A This is necessary for unit drain to function properly Refer to accessory roof curb installation instructions for additional information as required SLAB MOUNT Place the unit on a solid level concrete pad that is a minimum of 4 in thick with 2 in above grade See Fig 5B The slab should extend approximately 2 in beyond the casing on all 4 sides of the unit Do not secure the unit to the slab except...

Page 3: ...82 6 14 0 355 6 15 0 381 0 50GS036 208 230 1 60 208 230 3 60 460 3 60 268 121 6 37 02 940 3 20 0 508 0 14 0 355 6 13 0 330 2 50GS042 208 230 1 60 208 230 3 60 460 3 60 294 133 3 35 02 889 5 19 0 482 6 14 0 355 6 13 0 330 2 50GX024 208 230 1 60 270 122 5 37 02 940 3 18 5 469 9 14 5 368 3 16 0 406 4 50GX030 208 230 1 60 208 230 3 60 291 132 0 39 02 991 1 19 5 495 3 15 5 393 7 17 6 447 0 50GX036 208 ...

Page 4: ... 176 38 98 990 2 19 0 482 6 16 0 406 0 17 0 432 0 50GX042 208 230 1 60 208 230 3 60 460 3 60 321 146 38 98 990 2 20 5 520 7 16 75 425 5 16 6 421 6 50GX048 208 230 1 60 208 230 3 60 460 3 60 326 148 38 98 990 2 19 5 495 3 17 6 447 6 18 0 457 2 50GX060 208 230 1 60 208 230 3 60 460 3 60 399 181 42 98 1091 1 20 5 520 7 16 2 412 8 17 6 447 0 C99006 REQUIRED CLEARANCE FOR OPERATION AND SERVICING INCHES...

Page 5: ...6A00 8 203 11 279 16 1 2 419 28 3 4 730 CPRFCURB007A00 14 356 11 279 16 1 2 419 28 3 4 730 50GS048 060 50GX042 060 CPRFCURB008A00 8 203 16 3 16 411 17 3 8 441 40 1 4 1022 CPRFCURB009A00 14 356 16 3 16 411 17 3 8 441 40 1 4 1022 NOTES 1 Dimensions in are in millimeters 2 Roof curb is made of 16 gage steel 3 Table lists only the dimensions per part number that have changed 4 Insulated panels 1 in th...

Page 6: ... and locations Fig 4B 50GS and 50GX Unit Corner Weights CORNER 50GS 50GX 018 024 030 036 042 048 060 024 030 036 042 048 060 1 58 60 59 62 76 69 84 76 84 85 71 78 85 2 47 50 48 50 50 45 54 49 60 60 55 56 66 3 55 56 56 58 71 88 106 57 61 64 85 80 108 4 94 94 95 98 97 122 145 88 86 90 110 112 140 TOTAL WEIGHT 254 260 258 268 294 324 389 270 291 299 321 326 399 C00071 1 2 4 3 x y Fig 5A Unit Leveling...

Page 7: ... damage to the roof may occur 5 It is recommended that the unit base insulation around the perimeter of the vertical return air opening be secured to the unit base with aluminum tape Applicable local codes may require aluminum tape to prevent exposed fiberglass 6 Cover both horizontal duct openings with the duct covers from the accessory duct cover kit Ensure opening is air and watertight 7 After ...

Page 8: ... 22 1 4 1100 3600 22 1 4 1100 EVAPORATOR COIL Rows Fins in Face Area sq ft 2 15 3 1 2 15 3 1 2 15 3 7 3 15 3 06 4 15 3 06 3 15 4 7 4 15 4 7 EVAPORATOR BLOWER Nominal Airflow Cfm Size in Motor HP RPM 600 10x10 1 4 825 800 10x10 1 4 1075 1000 10x10 1 4 1075 1200 11x10 1 2 1075 1400 11x10 3 4 1075 1600 11x10 3 4 1075 2000 11x10 1 0 1100 RETURN AIR FILTERS in Throwaway 20x20 20x20 20x20 20x24 20x24 24...

Page 9: ...talled 1 Make all electrical connections in accordance with NEC ANSI NFPA latest edition and local electrical codes governing such wiring In Canada all electrical connec tions must be in accordance with CSA standard C22 1 Canadian Electrical Code Part 1 and applicable local codes Refer to unit wiring diagram 2 Use only copper conductor for connections between field supplied electrical disconnect s...

Page 10: ...ellow wire is located in connection box Route leads through hole in bottom of control box and make low voltage connections See Fig 10 Secure all cut wires so that they do not interfere with operation of unit TRANSFORMER PROTECTION The transformer is of the energy limiting type It is set to withstand a 30 second overload or shorted secondary condition PRE START UP Failure to observe the following w...

Page 11: ...5 0 15 0 20 0 18 1 20 8 26 0 30 0 36 1 41 7 54 2 62 5 72 2 83 3 28 7 28 7 28 7 31 0 37 5 42 5 50 1 57 1 72 7 83 1 95 3 109 2 35 35 35 35 40 45 60 60 90 100 100 110 208 230 3 60 187 254 10 7 85 1 4 4 3 8 5 0 7 5 10 0 11 3 15 0 15 0 19 9 10 4 12 0 20 8 24 1 31 3 36 1 41 6 48 0 18 8 18 8 31 1 35 1 44 1 50 1 57 0 65 0 25 25 25 25 35 40 45 60 60 70 460 3 60 414 508 5 3 42 0 8 2 5 10 15 20 6 12 18 24 1 ...

Page 12: ...6 42 6 50 3 57 2 72 8 83 3 95 4 109 3 35 35 35 35 40 45 60 60 90 100 100 110 208 230 3 60 187 253 12 4 88 0 1 6 4 1 3 8 5 0 7 5 10 0 11 3 15 0 15 0 20 0 10 4 12 0 20 8 24 1 31 3 36 1 41 7 48 1 21 2 21 2 21 2 21 2 31 2 35 2 44 2 50 2 57 2 65 3 25 25 25 25 35 40 45 60 60 70 460 3 60 414 506 6 1 44 0 0 9 2 0 5 10 15 20 6 0 12 0 18 0 24 1 10 5 10 5 17 5 25 1 32 6 15 15 20 30 35 048 208 230 1 60 187 25...

Page 13: ...et cooling control below room temperature C99024 452 5 v 457 7 v 455 2 v LEGEND FLA Full Load Amps LRA Locked Rotor Amps MCA Minimum Circuit Amps MOCP Maximum Overcurrent Protection RLA Rated Load Amps NOTES 1 In compliance with NEC National Electrical Code requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit sh...

Page 14: ...m pressures stabilize 4 Measure and record the following a Outdoor ambient air temperature F db b Evaporator inlet air temperature F wb c Suction tube temperature F at low side service fitting d Suction low side pressure psig 5 Using Cooling Charging Charts compare outdoor air tem perature F db with the suction line pressure psig to determine desired system operating suction line temperature See F...

Page 15: ... with chassis parts To select high speed on 460 v GE motors separate the black female quick connect QC from the jumper lead male quick connect QC and connect the black lead to the BR Insulate the jumper to avoid contact with any chassis parts Fig 12 Wiring Diagram 208 230 60 1 C99003 15 ...

Page 16: ...ing sequence of operation is as follows When the room temperature rises to a point that is slightly above the cooling control setting of the thermostat the thermostat completes the circuit between thermostat terminal R to terminals Y and G These completed circuits through the thermostat connect Fig 13 Wiring Diagram 208 230 60 3 C99004 16 ...

Page 17: ...it wire G across the 24 v secondary of transformer TRAN The normally open contacts of energized contactor C close and complete the circuit through compressor motor COMP to con denser outdoor fan motor OFM Both motors start instantly Fig 14 Wiring Diagram 460 60 3 C99005 17 ...

Page 18: ... stop After a 30 second delay the blower motor stops The unit is in a standby condition waiting for the next call for cooling from the room thermostat MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure periodic maintenance must be performed on this equipment This cooling unit should be inspected at least once each year by a qualified se...

Page 19: ... Low Watts 675 660 650 640 630 620 610 595 580 Cfm 1387 1326 1275 1204 1142 1081 995 918 850 Med Watts 886 855 825 795 778 765 750 735 718 700 Cfm 1458 1406 1350 1285 1224 1163 1091 1013 932 870 High Watts 1000 950 925 910 890 875 855 833 Cfm 1488 1424 1360 1296 1233 1148 1071 1005 048 Low Watts 727 712 700 688 666 644 622 595 569 Cfm 1640 1600 1575 1505 1450 1390 1300 1205 1145 Med Watts 853 836 ...

Page 20: ...96 783 529 036 Low Watts 470 458 445 430 415 399 384 Cfm 1352 1257 1240 1199 1107 1015 924 Med Watts 514 501 487 471 455 438 422 Cfm 1338 1295 1288 1181 1111 968 813 High Watts 646 636 626 614 602 589 Cfm 1385 1268 1196 1159 1032 948 042 Low Watts 625 614 605 593 574 549 518 485 454 Cfm 1540 1510 1473 1396 1348 1288 1192 1124 1037 Med Watts 726 695 661 625 591 561 540 Cfm 1648 1593 1530 1446 1352 ...

Page 21: ...ling season Clean when necessary 4 Check electrical connections for tightness and controls for proper operation each heating and cooling season Service when necessary 5 Ensure electric wires are not in contact with refrigerant tubing or sharp metal edges C99041 Fig 19 Cooling Charging Chart 50GS042 Units Fig 21 Cooling Charging Chart 50GS060 Units C99043 OUTDOOR TEMP F C 115 46 45 7 55 13 65 18 75...

Page 22: ...r to the unit before cleaning the blower motor and wheel Failure to adhere to this warning could cause personal injury or death To clean the blower motor and wheel 1 Remove and disassemble blower assembly as follows a Remove unit access panel b Disconnect motor lead from time delay relay TDR Disconnect yellow lead from terminal L2 of the contactor 030 60HZ CHARGING CHART OUTDOOR TEMP F C 115 46 45...

Page 23: ... a fin comb If coated with dirt or lint clean the coils with a vacuum cleaner using the soft brush attachment Be careful not to bend the fins If coated with oil or grease clean the coils with a mild detergent and water solution Rinse coils with clear water using a garden hose Be careful not to splash water on motors insulation wiring or air filter s For best results spray condenser coil fins from ...

Page 24: ...ressure Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid personal injury or death Use all service ports and open all flow control devices including solenoid valves If oil is detected or if low cooling performance is suspected leak test all refrigerant tubing using an electronic leak detector halide torch or liquid soap solution If a refrigerant leak...

Page 25: ...use and correct Defective run start capacitor overload or start relay Determine cause and replace Defective thermostat Replace thermostat Faulty condenser fan 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 R...

Page 26: ...ghtness III START UP Supply Voltage L1 L2 C S __________ L2 L3 S R __________ L3 L1 R C __________ Compressor Amps L1 C __________ L2 S __________ L3 R __________ Indoor Evaporator Fan Amps __________ TEMPERATURE Outdoor Condenser Air Temperature __________ DB Return Air Temperature __________ DB __________ WB Cooling Supply Air __________ DB __________ WB PRESSURES Refrigerant Suction __________ ...

Page 27: ...27 ...

Page 28: ...Form No 50GS GX 3SI Cancels 50GS GX 2SI Page 28 11 02 Copyright 2002 Carrier Corp Catalog No 535 00078 ...

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