Gree FXA2A-D Owner's Manual page 18

BU Module
2) Brazing the piping adapter
① If the connection size of the pipe adapter selected is different from the piping connection size of
BU module, cut the tube of the piping adapter from middle with tube cutter and remove the
burrs.
② To avoid heat damage the internal structure of the BU module, wrap the pipes to be brazed with
sufficient wet cloths.
③ After brazing, use wet cloths to cool off the pipes to be brazed sufficient.
3) Sealing the unconnected port
If the port of BU module indoor side does not connected to one indoor unit, the port must be
sealed to prevent refrigerant leaks.
① Select the appropriate piping adapter.
② Pinch the end of the chosen piping.
③ To avoid heat damage the internal structure of the BU module, wrap the pipes to be brazed with
sufficient wet cloths.
Fig. 18
Fig. 19
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