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Note On Adding Refrigerant
CAUTION
• Refrigerant charging must be performed after wiring, vacuuming, and the leak testing.
DO NOT exceed the maximum allowable quantity of refrigerant or overcharge the system.
•
Doing so can damage the unit or impact it's functioning.
Charging with unsuitable substances may cause explosions or accidents. Ensure that the
•
appropriate refrigerant is used.
Refrigerant containers must be opened slowly. Always use protective gear when charging the
•
system.
DO NOT mix refrigerants types.
•
For R32 refrigerant model, make sure the condtions within the area have been
•
made safe by control of ammable material when the refrigerant added into air conditioner.
N=2(one-twin models), N=3(one-three models), N=4(one-four models), N=5(one- ve models).
Depending on the length of connective piping or the pressure of the evacuated system, you
made need to add refrigerant. Refer to table below for refrigerant amounts to be added:
Connective Pipe
Air Purging
Length(m)
Method
Pre-charge pipe length (ft/m)
Vacuum Pump
(pre-charge pipe length xN )
More than (pre-charge
Vacuum Pump
pipe lengthxN) ft/m
NOTE:
The standard pipe length is 7.5m.
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ADDITIONAL REFRIGERANT PER PIPE LENGTH
Liquid Side: Ø 6.35 (Ø 1/4")
R32
(Total pipe length - pre-charge pipe lengthxN) x12g/m
(Total pipe length - pre-charge pipe lengthxN) x0.13oZ/ft
Additional Refrigerant
N/A
Liquid Side: Ø 9.52 (Ø 3/8")
R32
(Total pipe length - pre-charge pipe lengthxN) x24g/m
(Total pipe length - pre-charge pipe lengthxN) x0.26oZ/ft
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