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18-BC89D1-1L-EN
Unit Location Considerations . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Coastal Considerations . . . . . . . . . . . . . . . . 7
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Setting Up the Unit . . . . . . . . . . . . . . . . . . . . . . . 8
Refrigerant Line Considerations . . . . . . . . . . . . 9
Refrigerant Line Brazing . . . . . . . . . . . . . . . . . . . 12
Refrigerant Line Leak Check . . . . . . . . . . . . . . . 14
Service Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electrical — Low Voltage
Communicating . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical — High Voltage . . . . . . . . . . . . . . . . . . 17
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
System Charge Adjustment . . . . . . . . . . . . . . . 20
Refrigerant Charging Chart . . . . . . . . . . . . . . . 21
Charging the Unit. . . . . . . . . . . . . . . . . . . . . . . . . . 23
Subcooling Charging Below 55º F
Outdoor Temp. (In Heating Only) . . . . . . . . . . 24
Defrost Control (Heat Pump only). . . . . . . . . . 26
Checkout Procedures . . . . . . . . . . . . . . . . . . . . . . 27
Table of Contents