Loading ...
Loading ...
Loading ...
Page 49
Note on Adding Refrigerant
Some systems require addional charging depending on pipe lengths. The standard pipe length varies
according to local regulaons. For example, in North America, the standard pipe length is 25’ (7.5m).
In other areas, the standard pipe length is 16‘5m (16‘). The refrigerant should be charged from the service
port
on the outdoor unit’s low pressure valve.
The addional refrigerant to be charged can be
calculated using the following formula:
CAUTION
DO NOT mix refrigerant types.
Liquid Side Diameter
R32 :
(Total pipe length -
standard pipe length)x
12g(0.13oZ)/m()
(Total pipe length -
standard pipe length)x
24g(0.26oZ)/m()
(Total pipe length -
standard pipe length)x
40g(0.42oZ)/m()
φ1/4”(6.35) φ3/8”(9.52) φ1/2”(12.7)
R22
(orifice tube in the indoor unit):
(Total pipe length -
standard pipe length)x
30g (0.32oZ)/m()
(Total pipe length -
standard pipe length)x
65g(0.69oZ)/m()
(Total pipe length -
standard pipe length)x
115g(1.23oZ)/m()
R22
(orifice tube in the outdoor unit):
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m()
(Total pipe length -
standard pipe length)
x30(0.32oZ)/m()
(Total pipe length -
standard pipe length)
x60g(0.64oZ)/m()
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m()
R410A:
(orifice tube in the indoor unit):
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m()
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m()
(Total pipe length -
standard pipe length)
x115g(1.23oZ)/m()
R410A:
(orifice tube in the outdoor unit):
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m()
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m()
Air Evacuation
Loading ...
Loading ...
Loading ...