User manual

English

Installation

Control box

Remove the screw for the

control box cover

For connecting the

refrigerant pipes

Remove the gas and liquid

service port caps

Gas service port

Liquid service port

Connect the gas and liquid

refrigerant pipes

Step 3.3 Evacuating the air

The outdoor unit is loaded with sufficient R-410A

refrigerant. Do not vent R-410A into atmosphere: it is a

fluorinated greenhouse gas, covered by Kyoto Protocol,

with a Global Warming Potential (GWP) = 2088. You

should evacuate the air in the indoor unit and in the

pipe. If air remains in the refrigerant pipes, it affects the

compressor. It may cause reduction of cooling capacity and

malfunction. Use a vacuum pump.

CAUTION

• When installing, make sure there is no leakage. When

recovering the refrigerant, ground the compressor first

before removing the connection pipe. If the refrigerant

pipe is not properly connected and the compressor

works with the stop valve open, the pipe inhales the

air and it makes the pressure inside of the refrigerant

cycle abnormally high. It may cause explosion and

injury.

1 Leave the system in the standby mode.

WARNING

• Do not turn on the system! This is necessary for

better vacuum operation (full OPEN position of

Electronic Expansion Valve).

2 Connect the charging hose of the low pressure side

of manifold gauge to a gas service port as seen in the

picture.

(Backward flowing prevention)

Liquid service port <Low pressure>

Vacuum

Pump

Valve

15 minutes

Liquid service port <High pressure>

RAC MEDIA ODM 아프리카향 IBIM_EN_DB68-00000A-00.indb 41 2017-01-20 오전 11:28:48