44 | SAMSUNG
INSTALLATION
3
Performing Leak Tests
3-8. Performing Leak Tests
●
Before completing the installation (insulation of the hose and piping), you must check that there are no gas
leaks.
To check for gas leaks on the... Then, using a leak detector,
check the...
Indoor unit Flare nuts at the end of sections A
and B.
Outdoor unit Valves on sections C and D.
C
D
A
B
CAUTION
The CH✴✴CA models need a new refrigerant, R407C.
Thus, when refrigerant leakage occurs in use, you must purge and
make vacuous with a vacuum pump before adding the refrigerant.
Then put the optimal quantity of refrigerant newly.
In addition, the refrigerant must be added in liquid phase.
A
B
<Cassette Type>
<Duct Type>
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