Carrier 18K Installationshandbuch Seite 24

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
(orifice tube in the indoor unit):
R22
(orifice tube in the outdoor
unit):
R410A:
(orifice tube in the indoor unit):
R410A:
(orifice tube in the outdoor
unit):
R32 :
CAUTION
DO NOT mix refrigerant types.
Page 22-GB
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)
Liquid Side Diameter
φ9.52(3/8")
(Total pipe length - standard
pipe length)x 65g(0.69oZ)/m(ft)
(Total pipe length - standard
pipe length) x30(0.32oZ)/m(ft)
(Total pipe length - standard
pipe length) x65g(0.69oZ)/m(ft)
(Total pipe length - standard
pipe length) x30g(0.32oZ)/m(ft)
(Total pipe length - standard
pipe length)x 24g(0.26oZ)/m(ft)
φ12.7(1/2")
(Total pipe length -
standard pipe length)x
115g(1.23oZ)/m(ft)
(Total pipe length -
standard pipe length)
x60g(0.64oZ)/m(ft)
(Total pipe length -
standard pipe length)
x115g(1.23oZ)/m(ft)
(Total pipe length -
standard pipe length)
x65g(0.69oZ)/m(ft)
(Total pipe length -
standard pipe length)x
40g(0.42oZ)/m(ft)