Note On Adding Refrigerant - Carrier Super-Slim 18-24 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
(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.
ø6.35(1/4")
(Total pipe length -
standard pipe length) x
30g (0.32oZ)/m(ft)
(Total pipe length -
standard pipe length) x
15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length) x
30g(0.32oZ)/m(ft)
(Total pipe length -
standard pipe length) x
15g(0.16oZ)/m(ft)
(Total pipe length -
standard pipe length)x
12g(0.13oZ)/m(ft)
Liquid Side Diameter
ø9.52(3/8")
(Total pipe length - standard pipe
length) x 65g(0.69oZ)/m(ft)
(Total pipe length - standard pipe
length) x 30(0.32oZ)/m(ft)
(Total pipe length - standard pipe
length) x 65g(0.69oZ)/m(ft)
(Total pipe length - standard pipe
length) x 30g(0.32oZ)/m(ft)
(Total pipe length - standard pipe
length)x 24g(0.26oZ)/m(ft)
ø12.7(1/2")
(Total pipe length - standard pipe
length) x 115g(1.23oZ)/m(ft)
(Total pipe length - standard pipe
length) x 60g(0.64oZ)/m(ft)
(Total pipe length - standard pipe
length) x 115g(1.23oZ)/m(ft)
(Total pipe length - standard pipe
length) x 65g(0.69oZ)/m(ft)
(Total pipe length - standard pipe
length)x 40g(0.42oZ)/m(ft)
Page 26-GB