Hyper Heat Multizone Installation Manual

 Page 25 
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.
• 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.
Refrigerant containers must be opened slowly. Always use protective gear when charging the
system.
•
• DO NOT mix refrigerants types.
Air Evacuation
ADDITIONAL REFRIGERANT PER PIPE LENGTH
ADDITIONAL REFRIGERANT PER PIPE LENGTH
Connective Pipe
Length(m)
Air Purging
Method
Additional Refrigerant
Pre-charge pipe length (ft/m)
(
pre-charge pipe length xN )
Vacuum Pump
N/A
More than (
pre-charge
pipe length
xN) ft/m
Vacuum Pump
Liquid Side: Ø 6.35 (Ø 1/4”)
(Total pipe length - pre-charge pipe lengthxN) x12g/m
(Total pipe length - pre-charge pipe lengthxN) x0.13oZ/ft
Liquid Side: Ø 9.52 (Ø 3/8”)
R32 R32
R410A R410A
(Total pipe length - pre-charge pipe lengthxN) x24g/m
(Total pipe length - pre-charge pipe lengthxN) x0.26oZ/ft
Liquid Side: Ø 6.35 (Ø 1/4”)
(Total pipe length - pre-charge pipe lengthxN) x15g/m
(Total pipe length - pre-charge pipe lengthxN) x0.16oZ/ft
Liquid Side: Ø 9.52 (Ø 3/8”)
(Total pipe length - pre-charge pipe lengthxN) x30g/m
(Total pipe length - pre-charge pipe lengthxN) x0.32oZ/ft
Connective Pipe
Length(m)
Air Purging
Method
Additional Refrigerant(R410A)
Less than
Standard pipe length x N
Vacuum Pump
N/A
More than
Standard pipe length x N
Vacuum Pump
Liquid Side: Ø 6.35 (Ø 1/4”)
(Total pipe length - pre-charge pipe lengthxN) x15g/m
Liquid Side: Ø 9.52 (Ø 3/8”)
(Total pipe length - pre-charge pipe lengthxN) x30g/m
N=2(one-twin models), N=3(one-three models), N=4(one-four models), N=5(one-five 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:
Note: The pre-charge pipe length is 7.5m (24.6’).
Only for Australia models :
•
DO NOT mix refrigerants types.
N=2(one-twin models),N=3(one-three models),N=4(one-four models),N=5(one-five models).
Some systems require additional charging depending on pipe lengths. The standard pipe length
is 10m. The additional refrigerant to be charged can be calculated using the following formula:
Make sure to remove the additional refrigerant charge according to the rated volume (5m
refrigerant piping) when doing market or government verification test.