Samsung AM036FXMDCH - Page 27

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Refrigerant pipe installation
Selecting additional refrigerant charging
 Basic refrigerant
The basic amount of additional refrigerant charged at a factory
Model Refrigerant
Factory charge
kg lbs
AM036FXMDCH
R410A
3.2 7.055
AM048FXMDCH 3.2 7.055
AM053FXMDCH 3.3 7.275
 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(inch)] 6.35 (1/4) 9.52 (3/8) 12.7 (1/2) 15.88 (5/8)
Additional amount [kg/m (lb/ft)] 0.02 (0.013) 0.06 (0.040) 0.125 (0.084) 0.18 (0.121)
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(131.23’), b+c+d(Ø 9.52)=15m(49.21’), e+f+g(Ø 6.35)=15m(49.21’)
The amount of additional refrigerant = 55m(180.45’) x 60g + 15m(49.21’) x 20g = 3600g
2) The amount of additional refrigerant for each indoor unit
[Unit: kg(lb)]
Capacity(kBtu)
Model
7.5 9 9.5 12 18 20 24 30 36 48 76.8 96
1way cassette (AM0FN1DCH/AA)
0.25
(0.55)
0.25
(0.55)
0.25
(0.55)
Mini 4way cassette (AM0FNDNCH/AA)
0.37
(0.82)
0.37
(0.82)
0.37
(0.82)
0.37
(0.82)
4way cassette (AM0FN4DCH/AA)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.69
(1.52)
0.69
(1.52)
0.69
(1.52)
Slim duct (AM0FNLDCH/AA)
0.24
(0.53)
0.24
(0.53)
0.24
(0.53)
0.45
(0.99)
0.45
(0.99)
0.42
(0.93)
0.42
(0.93)
0.62
(1.37)
MSP duct (AM0FNMDCH/AA)
0.28
(0.62)
0.28
(0.62)
0.54
(1.19)
0.54
(1.19)
0.68
(1.50)
HSP duct (AM0FNHDCH/AA)
0.68
(1.50)
0.68
(1.50)
1.18
(2.60)
1.18
(2.60)
Wall mounted (AM0FNTDCH/AA)
0.24
(0.53)
0.24
(0.53)
0.24
(0.53)
0.36
(0.79)
0.36
(0.79)
0.36
(0.79)
Ceiling (AM0FNCDCH/AA)
0.39
(0.86)
0.39
(0.86)
Ex) When the indoor unit AM023FN1DCH/AA and AM052FNDNCH/AA are combinated
Additional refrigerant charging = 250g + 450g = 670g
3) The total amount of additional refrigerant charging = the amount of refrigerant charging for pipe + the amount of
refrigerant for each indoor unit.
Ex) The amount of additional refrigerant charging = 3600g + 700g = 4300g
AM0@@FXMDCH_IM_EN_03408A(1).indd 26 2013-03-04 오후 4:28:21