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VI. Installation instructions
5-2 Disassembly of indoor unit
Release the bottom edge of indoor unit from the mounting plate.
Use Allen wrench
As shown in Figure below, use Allen wrench to pull
downward the bottom edge of indoor unit, and then pull
out the unit slight so as to release the bottom buckles;.
Allen wrench (4cm)
5-3 Refrigerant replenishment
If connecting pipe length is over 7m, refrigerant replenishment is required.
Refrigerant replenishing volume for cooling/heating unit are listed as follow: A = 15g/m * (L-7) .
(A in the formula indicates the refrigerant replenishing volume in g; L indicates connecting pipe length in m)
Pipe length (m)
Refrigerant replenishing
volume for unit(g)
Note: maximum length of connecting pipe for models 25 Series must not be longer than 10m, and the maximum
length of connecting pipe for models 35/50/70 Series must not be longer than 15m.
Detailed operation steps are listed as follow:
Align and connect the gas bomb onto access door of gas valve;
Carry out the air purge for pipeline (or hose) from gas bomb of refrigerant;
Replenish refrigerant of specified volume for normal operation of the air conditioner.
Indoor unit
Operation valve of
gas bomb for coolant
Charging bottle
of coolant
Insert the Allen
wrench, and hook the end.
Connecting pipe
Liquid pipe
Gas pipe
Charging hose
Spring balance
(R-22 liquid ) charging
Installation & Maintenance Manual
In case the method in left column cannot be taken
If the method cannot be taken, just remove the face plate.
As shown in Figure below, insert the allen wrench into
the left and right square openings; and then push the
allen wrench upward so as to descend the indoor unit,
Square opening
Shutoff valve
Outdoor unit
Access door
Note:
1. During charing operation, do not turn over the gas
bomb for refrigerant replenishing for fear of any
problem;
2. To keep the high pressure in the gas bomb, please
heat it by warm water (40
put it on fire, or heat it by hot steam.
28
Push
Downward
) in cold seasons. Do not
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