10
Purging the unit
On delivery, the indoor unit is loaded with inert gas.
All this gas must therefore be purged before connecting the assembly piping. To purge the inert gas, proceed as
follows.
Unscrew the pinch pipe at the end of each refrigerant pipe.
Result: All inert gas escapes from the indoor unit.
NOTE
• To prevent dirt or foreign objects from getting into the
pipes during installation, do NOT remove the pinch pipe
completely until you are ready to connect the piping.
Liquid refrigerant
port
Gas refrigerant port
Welding ame
Wet cloth
NASA_Big Duct_AM@@@FNHDEH@_IM_03864A-05_EN.indd 10 2016-04-01 오후 5:29:40
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