Samsung AM TXMDCH Series - Selecting additional refrigerant charging

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Refrigerant pipe installation
Selecting additional refrigerant charging
X Basic refrigerant
The basic amount of additional refrigerant charged at a factory
Model Refrigerant
Factory charge
kg lbs
AM036TXMDCH
R410A
3.2 7.055
AM048TXMDCH 3.2 7.055
AM053TXMDCH 3.3 7.275
X 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
56791215182024273032364854
1way cassette
(AM***FN1DC*/AA,
AM***NN1DC*/AA)
0.25
(0.55)
0.25
(0.55)
0.25
(0.55)
Mini 4way cassette S (600x600)
(AM***KNNDC*/AA,
AM***NNNDC*/AA)
0.37
(0.82)
0.37
(0.82)
0.29
(0.64)
0.29
(0.64)
0.37
(0.82)
0.37
(0.82)
4way cassette
(AM***FN4DC*/AA,
AM***NN4DC*/AA)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.69
(1.52)
0.69
(1.52)
0.69
(1.52)
360 cassette
(AM***KN4DC*/AA)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.69
(1.52)
0.69
(1.52)
0.69
(1.52)
Floor Standing Unit
(AM***JNFDC*/AA,
AM***JNGDC*/AA)
0.12
(0.26)
0.22
(0.49)
0.22
(0.49)
0.32
(0.72)
0.32
(0.72)
Slim duct
(AM***FNLDC*/AA)
0.24
(0.53)
0.24
(0.53)
0.24
(0.53)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.45
(0.99)
0.62
(1.37)
MA duct
(AM***JNMDC*/AA,
AM***JNHDC*/AA)
0.37
(0.81)
0.37
(0.81)
0.37
(0.81)
0.54
(1.19)
0.54
(1.19)
0.47
(1.04)
0.47
(1.04)
0.47
(1.04)
0.68
(1.50)
0.68
(1.50)
0.91
(2.01)
MSP duct
(AM***FNMDC*/AA)
0.28
(0.62)
0.28
(0.62)
0.54
(1.19)
0.54
(1.19)
0.68
(1.50)
HSP duct
(AM***FNHDC*/AA)
0.68
(1.50)
0.68
(1.50)
Wall mounted
(AM***MNVDC*/AA)
0.22
(0.49)
0.22
(0.49)
0.25
(0.55)
0.34
(0.75)
0.34
(0.75)
0.71
(1.57)
0.71
(1.57)
0.71
(1.57)
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