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Instructions of Unit Installation
10. If conditions allow, use a vacuum pump to remove air out from the valve. Refer to Figure 40
Caution：
1. When connecting the indoor unit with the connecting pipe, do not pull the big and
small joints of the indoor unit forcefully, so as to prevent the capillary of the indoor
unit and other pipes from breaking and leaking.
2.The connecting pipe shall be supported by proper bracket. The weight of the pipe
shall not be withstand by the unit.
Installation of Protective Layer of Connecting Pipe
1.To avoid generation of condensate on the connecting pipe and avoid leakage, the big pipe and the
small pipe of the connecting pipe must be covered by thermal insulation materials, be bundled by
adhesive tape, and be isolated from air.
2.The joint connecting to the indoor unit must be wrapped by thermal insulation material. There shall
be no gap between the connecting pipe joint and the wall of the indoor unit. Refer to Figure 41.
Caution:
After the pipes are wrapped by protective materials, never bend the pipes to form very
small angle, and otherwise the pipes may crack or break.
3.Use adhesive tape to wrap the pipes:
(1) Use adhesive tape to bundle the connecting pipe and the cables together. To prevent
condensate from overflowing out from the drainage pipe, separate the drainage pipe firm the
connecting pipe and the cables.
Pressure Gage
"LO" Knob
Liq id Valve
u
Gas Valve
Fig.40
No Gap
无 间隙
Fig.41
Installation of Connecting Pipe
Pressure Gage
"HI" Knob
Connecting Hose
32
Vacuum Pump
Fig.42
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