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(6) Wrap the Pipe with Tape
1) Bundle the refrigerant pipe and electric wire together with tape, and separate them from the
drain pipe to prevent the condensate water overflowing.
2) Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where it enters the
wall. During the wrapping, the later circle should cover half of the former one.
3) Fix the wrapped pipe on the wall with clamps.
CAUTION!
Do not wrap the pipe too tightly; otherwise the insulation effect would be weakened.
①
Additionally, make sure the drain hose is separated from the pipe.
After that, fill the hole on the wall with sealing material to prevent wind and rain coming into
②
the room.
2.4 Refrigerant Charging and Trial Running
(1) Refrigerant Charging
1) The refrigerant has been charged into the outdoor unit before shipment, while additional
refrigerant still need be charged into the refrigerant pipe during the field installation.
2) Check if the liquid valve and the gas valve of the outdoor unit are closed fully.
3) As shown in the following figure (Fig.9), expel the gas inside the indoor unit and refrigerant
pipe out by the vacuum pump.
4) When the compressor is not running, charge the R410A refrigerant into the refrigerant pipe
from the liquid valve of the outdoor unit (do not do it from the gas valve).
(2) Calculation of the Additional Refrigerant Chargeing
1) Refrigerant Charge in the Outdoor Unit before Shipment
Model
Refrigerant Charge (kg)
Notes：
The refrigerant charge mentioned in the table above is not included those charged
①
additionally in the indoor unit and the refrigerant pipe.
The amount of the additional refrigerant charge is dependent on the diameter and length of
②
the liquid refrigerant pipe which is decided by the actual yield installation requirement.
Record the additional refrigerant charge for future maintenance.
③
2) Calculation of the Additional Refrigerant Charge
Free Match D.C.inverter Muti-variable Air Conditioner Outdoor Unit
Manometer
"LO" knob
Hose
Gas Valve
Table 6
Manometer
"HI" knob
Vacuum pump
Fig.9
36K
4.3
9
42K
4.8
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