Gree GWHD(28)NK3FO, Руководство по обслуживанию

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Installation and Maintenance
Service Manual
CAUTION !
ķ
During the connection of the indoor unit and the refrigerant pipe, never pull any joints of the indoor unit by force;
otherwise the capillary pipe or other pipe may crack, which then would result in leakage.
ĸ
The refrigerant pipe should be supported by brackets, that is, don’t let the unit withstand the weight of it.
CAUTION !
For the Free match system, each pipe should be labeled to tell which system it belongs to avoid mistaken inaccurate
piping.
e. Installation of the Protection Layer of the Refrigerant Pipe
1) The refrigerant pipe should be insulated by the insulating material and plastic tape in order to prevent condensation
and water leakage.
2) The joints of the indoor unit should be wrapped with the insulating material and no gap is allowed on the joint of the
indoor unit, as shown in Fig.7.
Fig.7
CAUTION !
After the pipe is protected well enough, never bend it to form a small angle; otherwise it would crack or break.
f. Wrapping 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
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 !
ķ
Do not wrap the pipe too tightly; otherwise the insulation effect would be weakened. Additionally, make sure the drain
hose is separated from the pipe.
ĸ
8.5.4 Refrigerant Charging and Trial Running
a.
Refrigerant Charging
1) The refrigerant has been charged into the outdoor unit before shipment, while additional refrigerant still need be
2) Check if the liquid valve and the gas valve of the outdoor unit are closed fully.
pump.(2 purposes of outdoor unit’s main valve:1.vacuum pumping 2.Control the on /off of outdoor unit refrigerant)
No gap
Fig.8
“LO” knob
Manometer
Manometer
“HI” knob
Vacuum pump
Hose
Gas Valve