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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 unit.
Result : All inert gas escapes from the indoor unit.
Since the diagram is made of paper, it may shrink or stretch
slightly due to temperature or humidity. For this reason,
NOTE
maintain the correct measurements between the markings
before drilling the holes.
In order to perform leak check, the product has been filled with nitrogen.
Discharge all the nitrogen before installation.
The liquid pipe and air pipe are connected by nuts and are welded,
respectively. Unscrew the nuts of liquid pipe to clear the nitrogen and then
disconnect the air pipe with welding flame.
Welding without unscrewing the nuts of liquid pipe and while
there is nitrogen present will result in explosion.
CAUTION
Leak may occur when there is no nitrogen present after
unscrewing the liquid pipe.
Before installation, be sure to perform leak check.
❋ The design and shape are subject to change
ENGLISH-12
Torque
wrench
Flare nut
according to the model.
Spanner
Union
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