Carrier 50SX024-060, 50SS018-060 User Manual
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS .................1-12
General ......................................1
RECEIVING AND INSTALLATION ...........13-26
Step 1 — Check Equipment ..................13
• IDENTIFY UNIT
• INSPECT SHIPMENT
Step 2 — Provide Unit Support ..............13
• ROOF CURB
• SLAB MOUNT
Step 3 — Provide Clearances ................13
Step 4 — Rig and Place Unit .................13
• UNITS WITHOUT BASE RAILS
• UNITS WITH OPTIONAL BASE RAILS
Step 5 — Select and Install Ductwork ........16
• CONVERTING HORIZONTAL DISCHARGE
UNITS TO DOWNFLOW (VERTICAL) DISCHARGE
— STD (NON-ICM) UNITS
• CONVERTING HORIZONTAL DISCHARGE UNITS
TO DOWNFLOW (VERTICAL) DISCHARGE
— ICM UNITS
• ACCESSORY DUCT FLANGE KIT INSTALLATION
Step 6 — Provide for Condensate Disposal ...20
Step 7 — Install Electrical Connections ......21
• HIGH-VOLTAGE CONNECTIONS
• ROUTING POWER LEADS INTO UNIT
• CONNECTING GROUND LEAD TO
WIRE-BINDING SCREW
• ROUTING CONTROL POWER WIRES — STD
NON-ICM UNITS (24 V)
• ROUTING CONTROL POWER WIRES — ICM
UNITS (24 V)
• SPECIAL PROCEDURES FOR 208-V
OPERATION
PRE-START-UP ............................26,27
START-UP ................................27-39
Check for Refrigerant Leaks .................27
Start-Up Cooling Section and
Make Adjustments ........................27
MAINTENANCE ............................40,41
Air Filter ....................................40
Unit Top Removal ...........................40
Evaporator Blower and Motor ................40
Condenser Coil, Evaporator Coil,
and Condensate Drain Pan ................41
Condenser Fan .............................41
Electrical Controls and Wiring ...............41
Refrigerant Circuit ..........................41
Evaporator Airflow ..........................41
Metering Devices ...........................41
Liquid Line Strainer .........................41
TROUBLESHOOTING COOLING CHART .....42,43
START-UP CHECKLIST .....................CL-1
50SS018-060
50SX024-060
Single-Package Cooling Units
Fig. 1 — Unit 50SX With Optional Base Rail Shown
NOTE TO INSTALLER — Before the installation, READ
THESE INSTRUCTIONS CAREFULLY AND COMPLETELY. Also, make sure the Owner’s Manual and Service Instructions are left with the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical components. Only trained and qualified personnel should install,
repair, or service air-conditioning equipment.
Untrained personnelcan perform basicmaintenance functions of cleaning coils and filters.All other operations should
be performed by trained service personnel. When working
on air-conditioning equipment, observe precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wearsafety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire extinguisher available for all brazing operations.
Before performing service or maintenance operations on
system, turn off main power to unit. Turn off accessory
heater power switch if applicable. Electrical shock can
cause personal injury.
General— 50SS,SX cooling units are fully self-contained
and designed for outdoor installation. See Fig. 1. As shown
in Fig. 2-9, both small- and large-cabinet units are shipped
in a horizontal-discharge configuration for installation on
a ground-level slab. All units can be converted to downflow discharge configurations for rooftop applications. See
Fig. 10 for roof curb dimensions.
Instructions continued on page 13.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 1b 6b
PC 111 Catalog No. 535-022 Printed in U.S.A. Form 50SS,SX-4SI Pg 1 5-95 Replaces: 50SS,SX-3SI
REQUIREDCLEARANCES TOCOMBUSTIBLE MATERIAL — in.(mm)
Unit Top ................................14(356)
Duct Side of Unit ............................2(51)
Side Opposite Ducts ........................14(356)
Bottom of Unit .................................0
Vertical Discharge First 12 in. (305) of Supply Duct .......1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ......36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side ...................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side ...................30(762)
Control Box Access Side ......................30(762)
(Except for Necessary Requirements)
Unit Top ................................36(914)
Side Opposite Ducts ........................30(762)
UNIT
50SS
018 19.6/499 21.7/551 10.6/269
024 22.5/570 20.9/530 10.0/254
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
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
NOTES:
1. Clearances must be maintained to prevent recirculation of air from
outdoor-fan discharge.
2. Dimensions in ( ) are in millimeters.
CENTER OF GRAVITY (in./mm)
XYZ
LEGEND
UNIT
50SS
018 208/230-1-60 208 95 61/28 43/20 69/31 35/16 24.1/613 18.2/462
024 208/230-1-60 237 108 60/27 54/25 92/42 31/14 24.1/613 18.2/462
030 208/230-1-60, 208/230-3-60 254 115 61/28 58/26 96/44 39/18 24.1/613 18.2/462
036 208/230-1-60, 208/230-3-60, 460-3-60 270 123 75/35 48/22 109/50 37/17 24.1/613 18.2/462
042 208/230-1-60, 208/230-3-60, 460-3-60 300 135 81/40 57/26 117/53 45/20 28.1/714 22.2/563
ELECTRICAL
CHARACTERISTICS
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D E F
UNIT HEIGHT
(in./mm)
DIMENSION
(in./mm)
Fig. 2 — Dimensions; Units 50SS018-042 Without Base Rail
2
REQUIREDCLEARANCES TOCOMBUSTIBLE MATERIAL — in.(mm)
Unit Top ................................14(356)
Duct Side of Unit ............................2(51)
Side Opposite Ducts ........................14(356)
Bottom of Unit .................................0
Vertical Discharge First 12 in. (305) of Supply Duct .......1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ......36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side ...................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side ...................30(762)
Control Box Access Side ......................30(762)
(Except for Necessary Requirements)
Unit Top ................................36(914)
Side Opposite Ducts ........................30(762)
UNIT
50SS
018 19.5/495 21.7/551 12.9/328
024 22.1/562 20.9/532 12.3/313
030 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
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
NOTES:
1. Clearances must be maintained to prevent recirculation of air from
outdoor-fan discharge.
2. Dimensions in ( ) are in millimeters.
CENTER OF GRAVITY (in./mm)
XYZ
LEGEND
UNIT
50SS
018 208/230-1-60 228 104 66/30 48/22 74/34 40/18 27.4/697 21.5/546
024 208/230-1-60 257 117 65/30 59/27 97/44 36/16 27.4/697 21.5/546
030 208/230-1-60, 208/230-3-60 274 125 66/30 63/29 101/46 44/20 27.4/697 21.5/546
036 208/230-1-60, 208/230-3-60, 460-3-60 290 132 81/37 53/24 114/52 42/19 27.4/697 21.5/546
042 208/230-1-60, 208/230-3-60, 460-3-60 320 146 86/39 62/28 122/55 50/23 31.4/798 25.5/648
ELECTRICAL
CHARACTERISTICS
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D E F
UNIT HEIGHT
(in./mm)
DIMENSION
(in./mm)
Fig. 3 — Dimensions; Units 50SS018-042 with Optional Base Rail
3
REQUIRED CLEARANCES TO COMBUSTIBLE MATERIAL — in. (mm)
Unit Top ....................................14(356)
Duct Side of Unit .................................2(51)
Side Opposite Ducts .............................14(356)
Bottom of Unit .....................................0
Vertical Discharge First 12 in. (305) of Supply Duct ...............1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ......................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ..............36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side .........................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side .........................30(762)
Control Box Access Side ...........................30(762)
(Except for Necessary Requirements)
Unit Top ....................................36(914)
Side Opposite Ducts .............................30(762)
UNIT
50SS
048 21.9/555 19.6/498 13.4/341
060 22.2/565 19.8/503 13.4/340
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
NOTES:
1. Clearances must be maintained to prevent recirculation of air from outdoor-fan discharge.
2. Dimensions in ( ) are in millimeters.
CENTER OF GRAVITY (in./mm)
XYZ
LEGEND
UNIT
50SS
048 208/230-1-60, 208/230-3-60, 460-3-60 332 151 82/37 68/31 131/60 51/23
060 208/230-1-60, 208/230-3-60, 460-3-60 359 163 65/30 99/45 120/55 75/34
ELECTRICAL
CHARACTERISTICS
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
Fig. 4 — Dimensions; Units 50SS048,060 Without Base Rail
4
REQUIRED CLEARANCES TO COMBUSTIBLE MATERIAL — in. (mm)
Unit Top ..................................14(356)
Duct Side of Unit ..............................2(51)
Side Opposite Ducts ...........................14(356)
Bottom of Unit ..................................0
Vertical Discharge First 12 in. (305) of Supply Duct ............1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ....................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ............36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side ......................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side .......................30(762)
Control Box Access Side .........................30(762)
(Except for Necessary Requirements)
Unit Top ..................................36(914)
Side Opposite Ducts ...........................30(762)
Fig. 5 — Dimensions; Units 50SS048,060 With Optional Base Rail
UNIT
50SS
048 21.7/550 19.7/501 15.7/400
060 22.0/560 19.9/506 15.7/399
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
NOTES:
1. Clearances must be maintained to prevent recirculation of air from outdoor-fan discharge.
2. Dimensions in ( ) are in millimeters.
UNIT
50SS
048 208/230-1-60, 208/230-3-60, 460-3-60 352 160 87/40 73/33 136/62 56/25
060 208/230-1-60, 208/230-3-60, 460-3-60 379 172 70/32 104/47 125/57 80/36
ELECTRICAL
CHARACTERISTICS
CENTER OF GRAVITY (in./mm)
XYZ
LEGEND
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
5
REQUIREDCLEARANCES TOCOMBUSTIBLE MATERIAL— in. (mm)
Unit Top ................................14(356)
Duct Side of Unit ............................2(51)
Side Opposite Ducts ........................14(356)
Bottom of Unit .................................0
Vertical Discharge First 12 in. (305) of Supply Duct .......1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ......36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side ...................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side ...................30(762)
Control Box Access Side ......................30(762)
(Except for Necessary 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.
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
LEGEND
UNIT
50SX
024 21.7/552 20.7/527 12.7/321
030 21.9/556 20.7/525 12.7/321
036 20.8/528 20.0/507 12.7/321
CENTER OF GRAVITY (in./mm)
XYZ
UNIT
50SX
024 208/230-1-60 270 123 67/30 62/28 99/45 42/19
030 208/230-1-60 273 124 66/30 64/29 100/45 43/20
036 208/230-1-60, 208/230-3-60, 460-3-60 291 132 80/36 54/25 112/51 45/20
ELECTRICAL
CHARACTERISTICS
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
Fig. 6 — Dimensions; Units 50SX024-036 Without Base Rail
6
REQUIREDCLEARANCES TOCOMBUSTIBLE MATERIAL— in. (mm)
Unit Top ................................14(356)
Duct Side of Unit ............................2(51)
Side Opposite Ducts ........................14(356)
Bottom of Unit .................................0
Vertical Discharge First 12 in. (305) of Supply Duct .......1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side ................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ......36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side ...................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side ...................30(762)
Control Box Access Side ......................30(762)
(Except for Necessary 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.
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
LEGEND
UNIT
50SX
024 21.5/546 20.8/528 15.0/380
030 21.7/550 20.7/527 15.0/380
036 20.6/524 20.1/510 15.0/380
CENTER OF GRAVITY (in./mm)
XYZ
UNIT
50SX
024 208/230-1-60 290 132 72/33 67/30 104/47 47/21
030 208/230-1-60 293 133 71/32 69/31 105/48 48/22
036 208/230-1-60, 208/230-3-60, 460-3-60 311 142 85/39 59/27 117/53 50/23
ELECTRICAL
CHARACTERISTICS
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
Fig. 7 — Dimensions; Units 50SX024-036 With Optional Base Rail
7
Fig. 8 — Dimensions; Units 50SX042-060 Without Base Rail
8
LEGEND
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
REQUIRED CLEARANCES TO COMBUSTIBLE MATERIAL — in. (mm)
Unit Top ........................................14(356)
Duct Side of Unit ...................................2(51)
Side Opposite Ducts ...............................14(356)
Bottom of Unit .........................................0
Vertical Discharge First 12 in. (305) of Supply Duct ...........1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side .....................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ...........36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side .........................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side .........................30(762)
Control Box Access Side ............................30(762)
(Except for Necessary Requirements)
Unit Top ........................................36(914)
Side Opposite Ducts ...............................30(762)
NOTES:
1. Clearancesmustbemaintained to prevent recirculation of airfromoutdoor-
fan discharge.
2. Dimensions in ( ) are in millimeters.
UNIT
50SX
042 21.0/533 20.1/510 15.4/390
048 21.8/553 19.7/499 15.4/390
060 22.2/565 19.8/503 13.4/340
UNIT
50SX
042 208/230-1-60, 208/230-3-60, 460-3-60 309 140 84/38 59/27 119/54 47/21
048 208/230-1-60, 208/230-3-60, 460-3-60 340 155 84/38 70/32 133/60 53/24
060 208/230-1-60, 208/230-3-60 359 163 65/30 99/45 120/55 75/34
ELECTRICAL
CHARACTERISTICS
CENTER OF GRAVITY (in./mm)
XYZ
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
Fig. 8 — Dimensions; Units 50SX042-060 Without Base Rail (cont)
9
Fig. 9 — Dimensions; Units 50SX042-060 With Optional Base Rail
10
CG — Center of Gravity NEC — National Electrical Code
COND — Condenser REQ’D — Required
MAT’L — Material
REQUIRED CLEARANCES TO COMBUSTIBLE MATERIAL — in. (mm)
Unit Top ........................................14(356)
Duct Side of Unit ...................................2(51)
Side Opposite Ducts ...............................14(356)
Bottom of Unit .........................................0
Vertical Discharge First 12 in. (305) of Supply Duct ...........1(25)
NECESSARY REQUIRED CLEARANCES — in. (mm)
Between Units, Control Box Side .....................42(1067)
Unit and Ungrounded Surfaces, Control Box Side ...........36(914)
Unit and Block or Concrete Walls and Other Grounded
Surfaces, Control Box Side .........................42(1067)
REQUIRED CLEARANCES FOR SERVICING — in. (mm)
Evaporator Coil Access Side .........................30(762)
Control Box Access Side ............................30(762)
(Except for Necessary Requirements)
Unit Top ........................................36(914)
Side Opposite Ducts ...............................30(762)
NOTES:
1. Clearancesmustbemaintained to prevent recirculation of airfromoutdoor-
fan discharge.
2. Dimensions in ( ) are in millimeters.
LEGEND
UNIT
50SX
042 20.8/529 20.2/512 17.3/440
048 21.6/548 19.8/502 17.3/440
060 22.0/560 19.9/506 15.7/399
UNIT
50SX
042 208/230-1-60, 208/230-3-60, 460-3-60 329 150 89/40 64/29 124/56 52/24
048 208/230-1-60, 208/230-3-60, 460-3-60 360 164 89/40 75/34 138/63 58/26
060 208/230-1-60, 208/230-3-60 379 172 70/32 104/47 125/57 80/36
ELECTRICAL
CHARACTERISTICS
CENTER OF GRAVITY (in./mm)
XYZ
UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
Fig. 9 — Dimensions; Units 50SX042-060 With Optional Base Rail (cont)
11
PART NUMBER ‘‘A’’
FLAT
CURB
NOTES:
1. Roof curb must be set up for unit being installed.
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. Service clearance 4 ft on each side.
7. direction of airflow.
8. Insulated panels, 1-in. thick, fiberglass 1-lb density.
CPRFCURB001A00 89 [203]
CPRFCURB002A00 119 [279]
CPRFCURB003A00 149 [356]
Fig. 10 — Roof Curb Dimensions
12
RECEIVING AND INSTALLATION
Step 1 — Check Equipment
IDENTIFYUNIT — The unit model number and serial number are stamped on the unit identification plate. Check this
information against shipping papers.
INSPECT SHIPMENT — Inspect for shipping damage while
unit is still on shipping pallet. If unit appears to be damaged
or is torn loose from its anchorage, have it examined by transportation inspectors before removal. Forward claim papers
directly to transportation company. Manufacturer is not responsible for any damage incurred in transit.
Check all items against shipping list. Immediately notify
the nearest Carrier Air Conditioning office if any item is
missing.
To prevent loss or damage, leave all parts in original packages until installation.
Step 2 — Provide Unit Support
ROOF CURB — Install accessory roof curb in accordance
with instructions shipped with curb. See Fig. 10. Install insulation, cant strips, roofing, and flashing. Ductwork must
be attached to curb.
IMPORTANT: The gasketing of the unit to the roof
curb is critical for a watertight seal. Install gasketing
material supplied with the roof curb. Improperly applied gasketing also can result in air leaks and poor
unit performance.
Curb should be level to within1⁄4inch. 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.
The slab should extend approximately 2 in. beyond the casing on all 4 sides of the unit. Install a 6-in. gravel apron in
front of condenser-air inlet to prevent obstruction of airflow
by grass or shrubs. Do not secure the unit to the slab except
when required by local codes.
Step 3 — Provide Clearances — The required mini-
mum service clearances and clearances to combustibles are
shown in Fig. 2-9. Adequate ventilation and condenser air
must be provided.
The condenser fan pushes air through the condenser coil
and discharges it through louvers on the top cover, the decorative grille, and the compressor access panel. Be sure that
the fan discharge does not recirculate to the condenser coil.
Do not locate the unit in either a corner or under an overhead obstruction. The minimum clearance under a partial overhang (such as a normal house overhang) is 48 in. above the
unit top. The maximum horizontal extension of a partial overhang must not exceed 48 inches.
Do not restrict condenser airflow. An air restriction at
either the outdoor-air inlet or the fan discharge can be
detrimental to compressor life.
Do not place the unit where water, ice, or snow from
an overhang or roof will damage or flood the unit. Do not
install the unit on carpeting, tile, or other combustible materials. The unit may be installed on wood flooring or on
Class A, B, or C roof covering materials.
Step 4 — Rig and Place Unit — Use spreader bars
or crate top when rigging the unit. The units must be rigged
for lifting as shown in Fig. 11 and 12. Refer to Fig. 11 and
12 for rigging weights and Tables1 and 2 for operating weights.
Use extreme caution to prevent damage when moving the
unit. Unit must remain in an upright position during all rigging and moving operations.The unit must be level for proper
condensate drainage; the ground-level pad or accessory roof
curb must be level before setting the unit in place. When a
field-fabricated support is used, be sure that the support is
level and that it properly supports the unit.
UNITSWITHOUTBASE RAILS —Accessory rigging brackets are recommended to be used for rigging. Install brackets
as follows:
Secure screws and paint protectors solidly against unit
basepan to hold lifting brackets in position.
Never use lifting brackets when the temperature is below −10 F (−23 C).
Never exceed 200 lbs per bracket of lifting force.
Never use lifting brackets for lifting other models of air
conditioning units.
Lifting point should be directly over the unit center of
gravity.
1. Position brackets as close to the corners of unit as pos-
sible. Be sure brackets are well outside of center of gravity. (See Fig. 2, 4, 6, 8, and 11.)
2. Position paint protectors and foam strips between screws
and painted surface of unit. Tightenscrews until they make
contact with the paint protectors.
3. Secure device or hook of suff icientstrength to hole in bracket
as shown in detail ‘‘A’’ of Fig. 11.
4. If wood top is available, use it for a spreader bar to pre-
vent straps from damaging unit. If wood top is not available, use spreader bars of sufficient length.
UNITS WITH OPTIONAL BASE RAILS — Keep unit upright and do not drop. Use spreader bars or top crate when
rigging unit. Rollers may be used to move unit across roof.
Level unit for proper condensate disposal. See Fig. 3, 5, 7,
and 9 for additional information. Lifting holes are provided
in base rails as shown in Fig. 12. Refer to rigging instructions on unit.
13
Hook rigging shackles through holes in lifting brackets, as shown in
NOTICE TO RIGGERS
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
018 260 118 36
024 289 131 36
030 306 139 36
036 322 146 36
042 333 151 36
048 384 174 36
060 411 186 36
UNIT SIZE
50SX
024 322 146 36
030 325 147 36
036 343 155 36
042 361 164 36
048 392 178 36
060 411 186 36
SHIPPING WEIGHT A B C
Lb Kg in. mm in. mm in. mm
SHIPPING WEIGHT A B C
Lb Kg in. mm in. mm in. mm
Fig. 11 — Suggested Rigging for Units Without Base Rail
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
3
⁄
4
934 18 457 241⁄
934 163⁄
934 165⁄
934 161⁄
934 167⁄
934 161⁄
934 161⁄
934 143⁄
934 141⁄
934 155⁄
934 151⁄
934 1411⁄
934 161⁄
4
16
4
16
4
4
4
2
8
2
16
4
426 241⁄
415 241⁄
412 241⁄
416 281⁄
412 341⁄
412 341⁄
375 281⁄
368 281⁄
397 281⁄
394 341⁄
373 341⁄
412 341⁄
8
8
8
8
8
8
8
8
8
8
8
8
8
613
613
613
613
714
867
867
714
714
714
867
867
867
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
skidwhen rigging, toprevent riggingstraps from damagingunit. Remove4 screws
to slide wood support through rectangular hole in rail.
UNIT SIZE
50SS
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
SHIPPING
WEIGHT
Lb Kg in. mm in. mm in. mm
ABC
Fig. 12 — Suggested Rigging for Units with Optional Base Rail
NOTICE TO RIGGERS
14
All panels must be in place when rigging.
UNIT SIZE
50SX
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
SHIPPING
WEIGHT
Lb Kg in. mm in. mm in. mm
ABC
Table 1 — Physical Data — Unit 50SS
UNIT 50SS 018 024 030 036 042 048 060
REFRIGERANT R-22
Metering Device Acutrol™ System
Charge (lb) 2.60 2.75 3.40 4.30 5.20 6.50 7.00
OPERATING WEIGHT (lb)
Without Base Rails 208 237 254 270 300 332 359
With Optional Base Rails 228 257 274 290 320 352 379
COMPRESSOR TYPE Rotary Reciprocating Reciprocating Reciprocating Reciprocating Scroll Scroll
EVAPORATOR FAN Centrifugal — Direct Drive
Speeds 2333222
Nominal Rpm 825 1075 1100 1100 1100 1100 1100
Diameter (in.) 10 10 10 10 10 10 10
Width (in.) 9999999
Nominal Airflow (Cfm) 600 800 1000 1200 1400 1600 1995
Motor Hp
EVAPORATOR COIL
Rows...Fins/in. 3...15 3...15 3...15 3...15 3...15 3...15 4...15
Face Area (sq ft) 1.83 2.29 2.29 3.06 3.60 4.44 4.44
CONDENSER FAN Propeller — Direct Drive
Cfm 1700 1700 1900 1900 1900 2400 2400
Nominal Rpm 850 850 1050 1050 1050 1050 1050
Diameter (in.) 18 18 18 18 18 20 20
Motor Hp
CONDENSER COIL
Rows...Fins/in. 1...17 1...17 2...17 2...17 2...17 2...17 2...17
Face Area (sq ft) 5.95 5.95 5.95 5.95 7.00 8.66 8.66
FILTER SIZE (in.)*
Throwaway 20x20 20x20 20x24 20x24 24x24 24x30 24x30
*Recommended field-supplied filters are 1 in. thick.
1
⁄
4
1
⁄
8
1
⁄
4
1
⁄
8
1
⁄
2
1
⁄
4
1
⁄
2
1
⁄
4
3
⁄
4
1
⁄
4
3
⁄
4
1
⁄
3
1
1
⁄
3
Table 2 — Physical Data — Unit 50SX
UNIT 50SX 024 030 036 042 048 060
REFRIGERANT R-22
Metering Device Acutrol™ System
Charge (lb) 3.9 4.5 5.4 5.7 5.8 6.5
OPERATING WEIGHT (lb)
Without Base Rails 270 273 291 309 340 359
With Optional Base Rails 290 293 311 329 360 379
COMPRESSOR TYPE Scroll
EVAPORATOR FAN Centrifugal — Direct Drive
Motor Type Std Std Std Std Std* ICM ICM
Speeds 33332Variable Variable
Nominal Rpm 1075 1075 1100 1100 1125 — —
Diameter (in.) 10 10 10 10 10 10 10
Width (in.) 99999 9 9
Nominal Airflow (Cfm) 800 1000 1200 1400 1600 1600 1995
Motor Hp
EVAPORATOR COIL
Rows...Fins/in. 2...15 3...15 4...15 3...15 4...15 4...15
Face Area (sq ft) 3.60 2.70 3.60 4.44 4.44 4.44
CONDENSER FAN Propeller — Direct Drive
Cfm 2200 2200 2200 2400 2400 2400
Nominal Rpm 1100 1100 1100 1100 1100 1050
Diameter (in.) 20 20 20 20 20 20
Motor Hp
CONDENSER COIL
Rows...Fins/in. 2...17 2...17 2...17 2...17 2...17 2...17
Face Area (sq ft) 7.00 7.00 7.00 8.66 8.66 8.66
FILTER SIZE (in.)†
Throwaway 24x24 24x24 24x24 24x30 24x30 24 x 30
LEGEND
ICM — Integrated Control Motor
*460 v only.
†Recommended field-supplied filters are 1 in. thick.
NOTE: Standard motors are non-integrated control motors.
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
4
1
⁄
2
1
⁄
4
1
⁄
2
1
⁄
4
3
⁄
4
11
1
⁄
4
1
⁄
3
15
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