Removing The Leak Prevention Caps - LG ARUM072BTE5 Installation Manual

INSTALLING FOR HEAT PUMP
OPERATION

Removing the Leak Prevention Caps

Removing the Leak Prevention Caps
Before brazing the field-supplied refrigerant piping to the outdoor unit connections, the leak prevention caps must be removed from the liquid
and vapor pipe connections.
For heat pump operation, the middle pipe is NOT used, must be kept closed, and a field-supplied copper cap must be brazed onto it before system is
operated. Protect the service valve with a wet towel during brazing.
• Verify that the valve stems in the service ports are closed (see next page).
• Remove the leak prevention caps from the liquid and vapor pipe outdoor unit connections.
• Use the Schrader valves on the liquid and vapor pipes to perform the leak / pressure, triple evacuation, and trim charge procedures.
Location of the Leak Prevention Caps.
Liquid Pipe
Leak
Prevention Cap
Line connection dimensions in the specification tables and in LATS are field piping dimensions, NOT the dimensions on the outdoor unit connec-
tions themselves. Adapters may be needed to connect the field piping to the correct outdoor unit connection (adapters are factory supplied with the
outdoor unit).
66
Service Ports
Due to our policy of continuous product innovation, some specifications may change without notification.
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Pipe Not Used for Heat
Pump Systems (Keep
Closed and Capped)
Vapor Pipe