Connecting And Filling The Refrigerant Gas Lines - Tekno Point ATHENA A-0732 User And Installation Manual

8.1 Connecting and filling the refrigerant gas lines

1. Connect the copper pipe to indoor unit.
2. Wipe the quick connectors with clean cloth to prohibit dust and impurity entering the pipes. Align the center of
the pipe and fully screw in the angular nuts with finger.
3. Connect other side of copper pipe to outdoor unit.
Vacuum machine
connectors
4. A vacuum pump and manifold gauge are needed. Connect the pressure gauge to the vacuum pump. Use va-
cuum pump to remove the air from indoor unit and copper pipe.
5. When vacuuming the indoor unit and copper pipe, please do not turn on gas / liquid valve, otherwise refrigerant
leakage. Vacuum the unit for at least 15 minutes till negative value shown on the pressure gauge, and close the
manifold gauge.
Liquid piping to the
heat pump
Gas piping from
the heat pump
Gas
valve
Coolant piping
connectors
Liquid
valve
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