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NOTICE TO RIGGERS

Hook rigging shackles through holes in lifting brackets, as shown in
Detail ‘‘A,’’ lifting brackets to be centered around the unit center of gravity. Use
wood top skid when rigging, to prevent rigging straps from damaging unit.

All panels must be in place when rigging.

UNIT SIZE

50SS

SHIPPING WEIGHT

A

B

C

Lb

Kg

in.

mm

in.

mm

in.

mm

018

260

118

36

3

4

934

18

457

24

1

8

613

024

289

131

36

3

4

934

16

3

4

426

24

1

8

613

030

306

139

36

3

4

934

16

5

16

415

24

1

8

613

036

322

146

36

3

4

934

16

1

4

412

24

1

8

613

042

333

151

36

3

4

934

16

7

16

416

28

1

8

714

048

384

174

36

3

4

934

16

1

4

412

34

1

8

867

060

411

186

36

3

4

934

16

1

4

412

34

1

8

867

UNIT SIZE

50SX

SHIPPING WEIGHT

A

B

C

Lb

Kg

in.

mm

in.

mm

in.

mm

024

322

146

36

3

4

934

14

3

4

375

28

1

8

714

030

325

147

36

3

4

934

14

1

2

368

28

1

8

714

036

343

155

36

3

4

934

15

5

8

397

28

1

8

714

042

361

164

36

3

4

934

15

1

2

394

34

1

8

867

048

392

178

36

3

4

934

14

11

16

373

34

1

8

867

060

411

186

36

3

4

934

16

1

4

412

34

1

8

867

NOTICE TO RIGGERS

Hook rigging shackles through holes in lifting brackets, as shown in Detail ‘‘A,’’
lifting brackets to be centered around the unit center of gravity. Use wood top
skid when rigging, to prevent rigging straps from damaging unit. Remove 4 screws
to slide wood support through rectangular hole in rail.

UNIT SIZE

50SS

SHIPPING

WEIGHT

A

B

C

Lb

Kg

in.

mm

in.

mm

in.

mm

018

247

112

36.5

926.0

17.0

431

28.2

715

024

276

125

36.5

926.0

14.3

364

28.2

715

030

293

133

36.8

926.0

14.7

372

28.2

715

036

309

140

36.5

926.0

15.5

393

28.2

715

042

339

154

36.5

926.0

15.5

394

32.2

817

048

371

168

36.5

926.0

14.8

376

38.2

969

060

398

180

36.5

926.0

14.4

366

38.2

969

All panels must be in place when rigging.

UNIT SIZE

50SX

SHIPPING

WEIGHT

A

B

C

Lb

Kg

in.

mm

in.

mm

in.

mm

024

309

140

36.5

926.0

15.0

380

32.2

817

030

312

141

36.5

926.0

14.8

376

32.2

817

036

330

150

36.5

926.0

15.8

402

32.2

817

042

348

158

36.5

926.0

15.6

397

38.2

969

048

379

172

36.5

926.0

14.9

378

38.2

969

060

398

180

36.5

926.0

14.4

366

38.2

969

Fig. 12 — Suggested Rigging for Units with Optional Base Rail

Fig. 11 — Suggested Rigging for Units Without Base Rail

14

Summary of Contents for 50SS018

Page 1: ...re left with the unit after installation SAFETY CONSIDERATIONS Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical com ponents Only trained...

Page 2: ...030 22 1 561 20 3 516 10 0 253 036 21 2 538 19 9 506 9 9 251 042 21 3 540 19 9 506 11 3 286 LEGEND CG Center of Gravity NEC National Electrical Code COND Condenser REQ D Required MAT L Material NOTES...

Page 3: ...21 8 554 20 4 519 12 3 312 036 21 0 533 20 1 509 12 2 310 042 21 0 532 20 1 510 13 6 344 LEGEND CG Center of Gravity NEC National Electrical Code COND Condenser REQ D Required MAT L Material NOTES 1 C...

Page 4: ...de 30 762 Except for Necessary Requirements Unit Top 36 914 Side Opposite Ducts 30 762 UNIT 50SS CENTER OF GRAVITY in mm X Y Z 048 21 9 555 19 6 498 13 4 341 060 22 2 565 19 8 503 13 4 340 LEGEND CG C...

Page 5: ...30 762 Except for Necessary Requirements Unit Top 36 914 Side Opposite Ducts 30 762 UNIT 50SS CENTER OF GRAVITY in mm X Y Z 048 21 7 550 19 7 501 15 7 400 060 22 0 560 19 9 506 15 7 399 LEGEND CG Cent...

Page 6: ...ry Requirements Unit Top 36 914 Side Opposite Ducts 30 762 NOTES 1 Clearances must be maintained to prevent recirculation of air from outdoor fan discharge 2 Dimensions in are in millimeters UNIT 50SX...

Page 7: ...equirements Unit Top 36 914 Side Opposite Ducts 30 762 NOTES 1 Clearances must be maintained to prevent recirculation of air from outdoor fan discharge 2 Dimensions in are in millimeters LEGEND CG Cen...

Page 8: ...Fig 8 Dimensions Units 50SX042 060 Without Base Rail 8...

Page 9: ...Top 36 914 Side Opposite Ducts 30 762 NOTES 1 Clearances must be maintained to prevent recirculation of air from outdoor fan discharge 2 Dimensions in are in millimeters LEGEND CG Center of Gravity NE...

Page 10: ...Fig 9 Dimensions Units 50SX042 060 With Optional Base Rail 10...

Page 11: ...36 914 Side Opposite Ducts 30 762 NOTES 1 Clearances must be maintained to prevent recirculation of air from outdoor fan discharge 2 Dimensions in are in millimeters UNIT 50SX CENTER OF GRAVITY in mm...

Page 12: ...alled 2 Seal strip must be applied as required for unit being installed 3 Dimensions in are in millimeters 4 Roof curb is made of 16 gage steel 5 Attach ductwork to curb flanges of duct rest on curb 6...

Page 13: ...in above the unit top The maximum horizontal extension of a partial over hang must not exceed 48 inches Do not restrict condenser airflow An air restriction at either the outdoor air inlet or the fan...

Page 14: ...412 341 8 867 NOTICE TO RIGGERS Hook rigging shackles through holes in lifting brackets as shown in Detail A lifting brackets to be centered around the unit center of gravity Use wood top skid when ri...

Page 15: ...20x20 20x20 20x24 20x24 24x24 24x30 24x30 Recommended field supplied filters are 1 in thick Table 2 Physical Data Unit 50SX UNIT 50SX 024 030 036 042 048 060 REFRIGERANT R 22 Metering Device Acutrol S...

Page 16: ...listed in Table 3 Heater limit switches may trip at air quan tities below those recommended Insulate and weatherproof all external ductwork Insulate and cover with a vapor barrier all ductwork passing...

Page 17: ...l opening be secured to the basepan with aluminum tape to prevent the insulation from tearing or bunching up when the blower housing is installed in the vertical discharge position 12 Orient blower ho...

Page 18: ...er Fig 16 4 Using a straight edge and sharp knife cut and remove the insulation around the perimeter of the cover Re move the screws securing the cover to the basepan and slide out the cover Discard t...

Page 19: ...ceway on top of unit until blower housing is installed 13 Orient blower housing for vertical airflow blower mo tor adjacent to horizontal duct opening See Fig 25 Reconnect the plug assemblies Slide bl...

Page 20: ...apron in ground level installations Install a field supplied conden sate trap at end of condensate connection to ensure proper drainage Make sure that the outlet of the trap is at least 1 in lower tha...

Page 21: ...for electrical data The field supplied disconnect may be mounted on the unit over the high voltage inlet hole See Fig 2 9 If the unit has an electric heater a second disconnect may be required Consult...

Page 22: ...0 1 1 3 2 16 8 25 12 100 LEGEND AWG American Wire Gage BRKR Breaker CUL Canadian Underwriters Laboratories FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration LRA Locked Rotor Amps MCA...

Page 23: ...vercurrent Protection NEC National Electrical Code RLA Rated Load Amps Fuse or HACR Breaker Carrier Scroll Compressor Copeland Scroll Compressor NOTES 1 In compliance with NEC requirements for multimo...

Page 24: ...move the wirenut from the terminal on the end of the red transformer primary lead 3 Save the wirenut 4 Connect the red lead to the contactor terminal from which the orange lead was disconnected 5 Usin...

Page 25: ...n On PL Plug TRAN Transformer Field Splice Terminal Marked Fig 33 Units 50SX048 060 208 230 1 60 Integrated Control Motor Wiring Schematic Fig 32 Easy Select Interface Board LEGEND Terminal Unmarked T...

Page 26: ...follow instructions on all WARNING CAU TION and INFORMATION labels attached to or shipped with unit Make the following inspections a Inspect for shipping and handling damages such as bro ken lines loo...

Page 27: ...an automatic changeover room thermostat place both SYSTEM and FAN switches in AUTO posi tions Observe that unit operates in Cooling mode when temperature control is set to call for cooling below room...

Page 28: ...2 8 8 9 5 10 2 13 6 17 0 20 1 23 1 23 9 24 1 25 4 26 1 85 SPH 6 1 6 2 6 5 6 6 10 0 13 5 17 3 21 1 22 6 24 1 25 6 27 1 90 SPH 5 0 8 1 11 4 15 2 19 0 20 5 22 0 23 5 25 0 95 SPH 6 2 9 4 13 2 17 0 18 5 2...

Page 29: ...74 76 65 SPH 8 4 8 4 8 4 8 4 12 5 16 7 18 7 20 7 22 0 23 4 24 8 26 1 70 SPH 5 0 5 0 5 0 5 0 9 0 13 1 15 9 18 6 20 0 21 3 22 7 24 0 75 SPH 5 4 9 6 13 1 16 6 17 9 19 3 20 6 22 0 80 SPH 6 0 10 3 14 5 15...

Page 30: ...8 6 70 SPH 15 4 15 4 15 4 15 4 18 1 20 8 22 5 24 1 25 1 26 1 27 1 28 1 75 SPH 11 9 11 9 11 9 11 9 14 6 17 2 18 9 20 6 22 3 24 0 25 8 27 5 80 SPH 8 4 8 4 8 4 8 4 11 0 13 7 15 4 17 0 19 5 22 0 24 5 27 0...

Page 31: ...7 5 28 3 29 1 30 0 30 0 30 0 75 SPH 15 0 15 4 15 7 16 1 19 2 22 3 25 4 26 7 28 1 29 4 28 7 28 0 80 SPH 9 2 9 5 9 7 9 9 14 4 18 9 23 3 24 7 26 0 27 3 27 4 27 4 85 SPH 9 6 15 5 21 3 22 6 24 0 25 3 26 1...

Page 32: ...6 21 3 21 5 21 7 21 8 21 8 21 8 85 SPH 12 7 12 7 12 7 12 7 15 6 18 4 21 3 21 3 21 3 21 3 21 3 21 3 90 SPH 9 2 9 2 9 2 9 2 12 0 14 9 17 8 18 7 19 7 20 8 20 8 20 8 95 SPH 5 6 5 6 5 6 5 6 8 5 11 3 14 2 1...

Page 33: ...ng Wet Bulb SPH Superheat at Compressor F Do not attempt to charge system under these conditions refrigerant slugging may occur Table 7 Required Suction Tube Temperature F SUPERHEAT TEMP F SUCTION PRE...

Page 34: ...UX HEAT RANGE VIO NOTE If no heater is installed this step can be omitted The airflow for electric heat is selected with theAUX HEAT RANGE terminals Refer to Table 3 and the installation in structions...

Page 35: ...ers are staged then the thermostat closes a second set of contacts W2 when second stage is required When thermo stat is satisfied contacts open deenergizing the heater relay and the IFR SEQUENCE OF OP...

Page 36: ...95 550 520 500 470 425 Cfm 1540 1440 1325 1220 1110 1000 800 042 Low Watts 730 700 680 645 615 580 535 490 430 Cfm 1620 1590 1550 1510 1460 1390 1310 1210 1050 High Watts 850 800 750 700 650 610 Cfm 1...

Page 37: ...750 Cfm 2480 2370 2250 2120 2000 1850 1690 Table 10 Dry Coil Air Delivery Horizontal Discharge Deduct 10 for 208 V Unit 50SX UNIT 50SX MOTOR SPEED AIR DELIVERY 230 AND 460 VOLT HORIZONTAL DISCHARGE Ex...

Page 38: ...0 High Watts 1050 1000 930 870 810 740 665 Cfm 2000 1940 1850 1750 1635 1500 1300 Air delivery values are based on operating voltage of 230 v or 460 v dry coil without filter or electric heater Deduct...

Page 39: ...0 1200 1400 1600 1800 2000 2200 5 20 0 030 0 033 0 037 0 042 0 047 0 052 0 060 0 067 0 075 Table 15 Filter Pressure Drop in wg UNIT SIZE 50SS FILTER SIZE in CFM 500 600 700 800 900 1000 1100 1200 1300...

Page 40: ...emoval of the unit top be sure to perform all of the routine maintenance procedures that re quire top removal including coil inspection and cleaning and condensate drain pan inspection and cleaning On...

Page 41: ...moved loosen the setscrew and slide the fan off the motor shaft 4 When replacing fan blade position blade so that lead ing edge is 2 in back from condenser inlet grille or 1 2 in maximum from fan deck...

Page 42: ...ficient line voltage Determine cause and correct Blocked condenser Determine cause and correct Defective run start capacitor overload or start relay Determine cause and replace Defective thermostat Re...

Page 43: ...Motor programmed with a delay profile Allow a few minutes for motor to shut off With thermostat in OFF the voltage on G Y1 Y Y2 W with respect to common should be less than 1 2 of actual low voltage...

Page 44: ......

Page 45: ......

Page 46: ...rograms 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...

Page 47: ......

Page 48: ...OR LOCATION IN HOUSING ORIFICE AND SETSCREW TIGHTNESS III START UP ELECTRICAL SUPPLY VOLTAGE L1 L2 L2 L3 L3 L1 COMPRESSOR AMPS L1 L2 L3 INDOOR FAN AMPS TEMPERATURES OUTDOOR AIR TEMPERATURE DB RETURN A...

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