26
Refrigerant pipe installation
Selecting additional refrigerant charging
f
Basic refrigerant
The basic amount of additional refrigerant charged at a factory
Model
Refrigerant
Factory charge(kg)
AM040
✴
XMDEH
R-410A
3.2
AM050
✴
XMDEH
3.2
AM060
✴
XMDEH
3.3
AM040
✴
XMDGH
3.2
AM050
✴
XMDGH
3.2
AM060
✴
XMDGH
3.3
f
Charging additional refrigerant
The amount of additional refrigerant charging =
The amount of refrigerant charging for pipe +
the amount of refrigerant correction charging for an indoor unit.
1. The amount of additional refrigerant depending on the pipe size.
- Amount of additional refrigerant has to be calculated based on the sum of all liquid pipe length.
Size of liquid pipe (mm)
6,35
9,52
12,7
15,88
Additional amount (kg/m)
0,02
0,06
0,125
0,18
Additional refrigerant charging calculation = The sum of total length of Ø 9.52 liquid pipe(m) x 60g + the sum of
total length of Ø 6.35 liquid pipe(m) x 20g
Ex) a(Ø 9.52)=40m, b+c+d(Ø 9.52)=15m, e+f+g(Ø 6.35)=15m
The amount of additional refrigerant = 55m x 60g + 15m x 20g = 3600g
