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Gas leak inspection
Use a leak detector manufactured specially for HFC refrigerant (R32, R410A, R134a, etc.) to perform
the R32 gas leak inspection.
* Leak detectors for conventional HCFC refrigerant (R22, etc.) cannot be used, as the sensitivity drops to
approximately 1/40 when used for HFC refrigerant.
R32 has a high working pressure, so failure to perform the installation work properly may result in gas leaks
such as when the pressure rises during operation. Be sure to perform leak tests on the piping connections.
31-EN
Insulating the Pipes
The temperatures at both the liquid side and gas side will be low during cooling so in order to prevent
condensation, be sure to insulate the pipes at both of these sides.
Insulate the pipes separately for the liquid side and gas side.
Outdoor unit inspection locations
– 16 –
Valve cover
32-EN
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