Samsung AFPCC052CA0 Installation Manual page 48

Adding Refrigerant
22
E-
How to Calculate the Quantity of Adding Refrigerant
If you have used more than 5m(16.4 ft.), add "A" of refrigerant for extra
meter. (For maximum piping length and height, refer to page 16).
The quantity of additional refrigerant is variable according to the installation
situation. Thus, make sure the outdoor unit situation before adding
refrigerant. This operation can only be performed by a qualified refrigeration
specialist.
Model
RFPC012CBM0
RFPC015CBM0
RFPC020CBM0
RFPH025CBM0
i.e. 1 indoor unit
Piping length
"a"
5m/16.45ft
7m/23ft
0.7oz={(23-16.4) x 0.11oz}
i.e. 2 indoor units
Piping length
a b c a+b+c
3m/9.8ft 1m/3.3ft 1m/3.3ft 5m/16.45ft
3m/9.8ft 2m/6.6ft 4m/13.15ft 9m/29.55ft
"A"
10g/m 0.11oz/ft
15g/m 0.16oz/ft
20g/m 0.22oz/ft
25g/m 0.27oz/ft
Additional charging amount
RFPC012CBM0 RFPC020CBM0
0
20g={(7-5) x 10g} 40g{(7-5) x 20g}
0.4oz={(23-16.4) x 0.22oz}
Additional charging amount
RFPC012CBM0
0
40g={(9-5) x 10g}
1.4oz={(29.5-16.4) x 0.11oz}
0
RFPC020CBM0
0
80g={(9-5) x 20g}
2.8oz={(29.5-16.4) x 0.22oz}