Note On Adding Refrigerant - Mirage VENTUS ALPHA IVADH361A Owner's Manual & Installation Manual

Note on Adding Refrigerant

Some systems require additional charging depending on pipe lengths. The standard pipe length varies
according to local regulations. For example, in North America, the standard pipe length is 7.5m (25').
In other areas, the standard pipe length is 5m (16'). The refrigerant should be charged from the service
port on the outdoor unit' s low pressure valve. The additional refrigerant to be charged can be
calculated using the following formula:
R22
(orif ice t ube in t he indoor unit ):
R22
(orif ice t ube in t he out door unit ):
R410A:
(orif ice t ube in t he indoor unit ):
R410A:
(orif ice t ube in t he out door unit ):
R32 :
CAUTION
 Page 50 
50
φ6.35(1/4")
(Total pipe length -
standard pipe length)x
30g (0.32oZ)/m(ft)
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length)
x30g(0.32oZ)/m(ft)
(Total pipe length -
standard pipe length)
x15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length)x
12g(0.13oZ)/m(ft)
mix refrigerant types.
DO NOT
Liquid Side Diamet er
φ9.52(3/8") φ12.7(1/2")
(Total pipe length - (Total pipe length -
standard pipe length)x standard pipe length)x
65g(0.69oZ)/m(ft) 115g(1.23oZ)/m(ft)
(Total pipe length - (Total pipe length -
standard pipe length) standard pipe length)
x30(0.32oZ)/m(ft) x60g(0.64oZ)/m(ft)
(Total pipe length - (Total pipe length -
standard pipe length) standard pipe length)
x65g(0.69oZ)/m(ft) x115g(1.23oZ)/m(ft)
(Total pipe length - (Total pipe length -
standard pipe length) standard pipe length)
x30g(0.32oZ)/m(ft) x65g(0.69oZ)/m(ft)
(Total pipe length - (Total pipe length -
standard pipe length)x standard pipe length)x
24g(0.26oZ)/m(ft) 40g(0.42oZ)/m(ft)