Contents
Main
Installation, Start-Up and Service Instructions
CONTENTS
SAFETY CONSIDERATIONS
General
50SS018-060 50SX024-060 Single-Package Cooling Units
Fig. 2 Dimensions; Units 50SS018-042 Without Base Rail
Fig. 3 Dimensions; Units 50SS018-042 with Optional Base Rail
Fig. 4 Dimensions; Units 50SS048,060 Without Base Rail
Fig. 5 Dimensions; Units 50SS048,060 With Optional Base Rail
Fig. 6 Dimensions; Units 50SX024-036 Without Base Rail
Fig. 7 Dimensions; Units 50SX024-036 With Optional Base Rail
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Fig. 8 Dimensions; Units 50SX042-060 Without Base Rail (cont)
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Fig. 9 Dimensions; Units 50SX042-060 With Optional Base Rail (cont)
Fig. 10 Roof Curb Dimensions
RECEIVING AND INSTALLATION Step 1 Check Equipment
Step 2 Provide Unit Support
Step 3 Provide Clearances
Step 4 Rig and Place Unit
Fig. 12 Suggested Rigging for Units with Optional Base Rail
Fig. 11 Suggested Rigging for Units Without Base Rail
Table 1 Physical Data Unit 50SS
Table 2 Physical Data Unit 50SX
Step 5 Select and Install Ductwork
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Step 6 Provide for Condensate Disposal
Step 7 Install Electrical Connections
Table 4A Electrical Data 50SS Units
Never operate a motor where a phase imbalance in supply volt- age is greater than 2%.
Table 4B Electrical Data 50SX Units
Never operate a motor where a phase imbalance in supply volt- age is greater than 2%.
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Fig. 33 Units 50SX048,060 208/230-1-60, Integrated Control Motor Wiring Schematic
Fig. 32 Easy Select Interface Board
PRE-START-UP
START-UP
Check for Refrigerant Leaks
Start-Up Cooling Section and Make Adjustments
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Table 5C Superheat Charging Table, 50SS030
Table 5D Superheat Charging Table, 50SS036
Table 5E Superheat Charging Table, 50SS042
Table 5F Superheat Charging Table, 50SS048 (Carrier Scroll Compressor)
Table 5G Superheat Charging Table, 50SS048 (Copeland Scroll Compressor)
Table 5H Superheat Charging Table, 50SS060 (Carrier Scroll Compressor)
Table 5I Superheat Charging Table, 50SS060 (Copeland Scroll Compressor)
Table 6A Superheat Charging Table, 50SX024
Table 6B Superheat Charging Table, 50SX030
Table 6C Superheat Charging Table, 50SX036
Table 6D Superheat Charging Table, 50SX042
Table 6E Superheat Charging Table, 50SX048
Table 6F Superheat Charging Table, 50SX060
Table 7 Required Suction-Tube Temperature (F)*
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Table 8 Dry Coil Air Delivery* Horizontal Discharge (Deduct 10% for 208 v) Unit 50SS
Table 9 Dry Coil Air Delivery* Vertical Discharge (Deduct 10% for 208 v) Unit 50SS
Table 10 Dry-Coil Air Delivery* Horizontal Discharge (Deduct 10% for 208 V) Unit 50SX
Table 11 Dry-Coil Air Delivery* Vertical Discharge (Deduct 10% for 208 V) Unit 50SX
Table 13 Wet Coil Pressure Drop
Table 14 Accessory Electric Heater Pressure Drop (in. wg)
Table 15 Filter Pressure Drop (in. wg)
MAINTENANCE
Air Filter
Unit Top Removal
Evaporator Blower and Motor
Condenser Coil, Evaporator Coil, and Conden- sate Drain Pan
Condenser Fan
Electrical Controls and Wiring
Refrigerant Circuit
Evaporator Airow
TROUBLESHOOTING COOLING CHART
TROUBLESHOOTING COOLING CHART (cont)
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PACKAGED SERVICE TRAINING
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START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION
II. PRE-START-UP (insert checkmark in box as each item is completed)
III. START-UP