Control box Remove the screw for the control box cover
Remove the gas and liquid | For connecting the |
service port caps | refrigerant pipes |
1Leave 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).
2Connect the charging hose of the low pressure side of manifold gauge to a gas service port as seen in the picture.
Installation
Gas service port <Low pressure>
Liquid service port | Connect the gas and liquid |
<High pressure> | refrigerant pipes |
Step 3.3 Evacuating the air
The outdoor unit is loaded with sufficient
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.
3
Valve | 15 minutes |
4
Vacuum
Pump
(Backward flowing prevention)
Liquid service port <Low pressure>
5
Liquid service port <High pressure>
3Open the valve of the low pressure side of manifold gauge anticlockwise.
4Evacuate the air in the connected pipes using the vacuum pump for about 15 minutes.
•Make sure that pressure gauge shows
•Close the valve of the low pressure side of manifold gauge clockwise.
•Turn off the vacuum pump.
•Check for 2 minutes if there is any pressure change.
•Remove the hose of the low pressure side of manifold gauge.
5Set a valve cork of liquid and gas service port to the open position.
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