MAXA FD2M42R, Руководство пользователя и инсталлятора

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Page 22
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Note On Adding Refrigerant
Note: The standard pipe length is 7.5m (24.6’).
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.
· For the R290 or R32 refrigerant model, make sure the condtions within the area have been
made safe by control of flammable material when the refrigerant added into air conditioner.
· The maximum refrigerant charge amount of R32 is 305 grams.
Refrigerant containers must be opened slowly. Always use protective gear when charging the system. ·
· DO NOT mix refrigerants types.
N=2(
1 x 2
models), N=3(
1 x 3
models), N=4(
1 x 4
models), N=5(
1 x 5
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:
Air Evacuation
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Connective Pipe
Length(m)
Air Purging
Method
Additional Refrigerant(
R32:)
Pre-charge pipe length (ft/m)
(Standard pipe length xN )
Vacuum Pump
N/A
More than (Standard
pipe lengthxN) ft/m
Vacuum Pump
Liquid Side: Ø 6.35 (Ø 1/4”)
(Total pipe length - standard pipe lengthxN) x12g/m
(Total pipe length - standard pipe lengthxN) x0.13oZ/ft
Liquid Side: Ø 9.52 (Ø 3/8”)
R32 R32
(Total pipe length - standard pipe lengthxN) x24g/m
(Total pipe length - standard pipe lengthxN) x0.26oZ/ft