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Connecting up and removing air in the circuit
6. Set valve cork of both liquid side and gas side of packed valve to the open
position.
7. Mount the valve stem nuts and the service port cap to the valve, and tighten
8. Check for gas leakage.
At this time, especially check for gas leakage from the 3-way valve's stem
nuts(A port), and from the service port cap.
Connect the indoor and outdoor units using pipes with flared connections (not supplied). For the lines, use
insulated, unwelded, degreased and deoxidized copper pipe, (Cu DHP type to ISO 1337 or UNI EN 12735-1),
CAUTION
suitable for operating pressures of at least 4200 kPa and for a burst pressure of at least 20700 kPa. Copper pipe
for hydro-sanitary applications is completely unsuitable.
For sizing and limits (height difference, line length, max. bends, refrigerant charge, etc.) see "Connecting
refrigerant pipe section".
28
B(liquid)
A(gas)
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