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indoor unit
refrigerantflow direction
3-way valve
outlet nut
Connect hose
Air exhaust process:
(1).Loosen the liquid pipe flare nut and remove the
exhaust nut of 3-way valve.
(2). Connect the outlet nut of the additional freon refrigerant
pot to the exhaust mouth .
(3).Loose the outlet nut of the additional freon refrigerant pot .
(4).After exhausting air for almost one miniute,then
tighten the liquid pipe flare nut
(5). Detect all the pipe joints leakage of freon in this
unit with soap water.
Refrigerant Volume to Be Added
Refrigerant volume to be added is calculated according to outdoor unit installation manual.
Be sure to add refrigerant measuring by a scale.
If the added refrigerant volume is inadequate (too much or insufficient), the compressor
malfunction will be caused. Be sure to calculate the refrigerant volume carefully.
The service man should write down the piping length and the added refrigerant volume
in the nameplate, which is on the electric control box cover of outdoor unit, for
diagnosing the compressor and refrigeration circulation malfunction.
The refrigerant refrigerant charge volume for the unit is based on using a 5m connecting
pipe. If the connecting pipe's length is longer than 5m, it is advisable to charge
additional refrigerant for the unit in order to achieve better operation.
additional freon refrigerant pot
CAUTION
16
3-way valve diagram
Connect to indoor unit
Connect to outdoor unit
Valve core
(6). If the uint has no leakage,then Tighten the
exhaust nut of 3-way valve.
(7).Press the spindle and let the additional freon
refrigerant leak out until the velocity of purging Air
is slow and warm .
(8)Back the exhaust nut to the uint..
(9).Loosen the valve spindle and core to Maximum.
Close position
Valve spindle
Exhaust mouth
Exhaust nut
Exhaust spindle
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