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Evacuation and leakage check
Take down the nut cover on the break valve of the outdoor
unit.
Aim at the center of the pipe and fully screw tight the conical
nut by hand.
Use the spanner to screw tight the conical nut.
Take down the valve nuts on the liquid valve and the gas
valve and take down the nuts of the freon injection nozzle.
Use the hexagon ring spanner to screw off the core of the
liquid valve, meanwhile use the screwdriver to open the valve
core of the gas valve. At this time, there should be gas
coming out.
After the air discharge lasts about 15 seconds and the
secondary refrigerant gas comes out, close the valve core
and screw tight the nut of the freon injection nozzle.
Open the core of liquid valve and gas valve completely(Fig.
11-11）.
Screw tight the valve cover, then use the suds or the leak
detector to check whether there is any leak in the connection
between the indoor and outdoor units and the pipes.
If condition allows, it is available to evacuate air inside the
unit from the gas valve core with a vacuum pump (Fig. 11-12)
Drainage of condenser of outdoor unit (no for cooling only unit）
When heating, the condensed water and defrost water
produced when defrosting by outdoor unit can be drained
to proper place through drainage hose.
Installation method
Clasp and install the outdoor drainage connector into the
φ25 hole on the baseboard. Then connect the water
discharge pipe to the discharge nozzle. The condensed
water and the defrosting water may be led to the
appropriate place for discharge.
Liquid
pipe
—90—
screwdriver
Gas pipe
Fluorine injection nozzle
Gas valve
Liquid valve
hexagon ring spanner
Fig. 11-11
valve cap
vacuum pump
Small pipe
Big pipe
Fig. 11-12
outdoor unit base board
Drainage connector
of outdoor unit
Fig. 11-13
Vacuum gauge
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