Installation Manual
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Tightening connection
CAUTION
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Tightening torque of flare pipe connections
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REQUIREMENT
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Piping with outdoor unit
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Outer dia. of copper pipe
Tightening torque
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Heat insulation
Heat insulation for the pipes should be done
separately for the liquid side and gas side.
Because both of the liquid and gas side pipes
become a low temperature during cooling
operation, suf
fi
cient heat insulation should be
done to prevent condensation.
• Heat insulator with a heat resistance of 120°C or
more must be used for the gas side pipe.
Airtight test/Air purge, etc.
For airtight test,air purge, addition of refrigerant,
and gas leak check, follow the Installation Manual
attached to the outdoor unit.
Open fully valves of the outdoor
unit
Gas leak check
Check with a leak detector or soap water whether
gas leaks or not, from the pipe connecting section
or cap of the valve.
REQUIREMENT
Use a leak detector manufactured exclusively
HFC refrigerant (R410A, R134a, etc.).
FILE NO. SVM-17045
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