Samsung DVM PLUS III HR - Additional Refrigerant Charging; Equivalent Length Calculations

installing the unit _17
ENGLISH
 Equivalent length calculation method
Equivalent length = actual pipe length(m) + number of ‘Y-joint’×0.5(m)+number of ‘Header joint’×1.0(m)+
number of elbows×equivalent length of each elbow
Additional refrigerant charging
• Additional refrigerant has to be charged according to the length and size of
liquid pipe.
Equivalent length calculations
• Total refrigerant amount of the system must be less then 100kg(220lbs). If total refrigerant
amount of system is over 100kg(220lbs) more, the system has to be divided into smaller system,
each containing less than 100kg(220lbs).
CAUTION
Liquid pipe size
(O.D)
Additional
refrigerant
charging
mm inch kg/m lbs/ft
Ø6.35 Ø1/4 0.020 0.0134
Ø9.52 Ø3/8 0.060 0.0403
Ø12.70 Ø1/2 0.125 0.0840
Ø15.88 Ø5/8 0.180 0.1210
Ø19.05 Ø3/4 0.270 0.1814
Ø22.23 Ø7/8 0.350 0.2352
Outdoor unit
Factory charging
kg lbs
RD075VRXFA 6.5 14.330
RD100VRXFA 7.5 16.535
RD125VRXFA 9.0 19.824
Elbow
Pipe size(O.D.) Equivalent length
mm inch m ft
Ø9.52 Ø3/8 0.18 0.59
Ø12.70 Ø1/2 0.20 0.66
Ø15.88 Ø5/8 0.25 0.82
Ø19.05 Ø3/4 0.35 1.15
Ø22.23 Ø7/8 0.40 1.31
Ø25.40 Ø1 0.45 1.48
Ø28.58 Ø1-1/8 0.50 1.64
Ø31.75 Ø1-1/4 0.55 1.80
Ø34.93 Ø1-3/8 0.58 1.90
Ø38.10 Ø1-1/2 0.60 1.97
Ø41.30 Ø1-5/8 0.70 2.30
Ø44.45 Ø1-3/4 0.75 2.46
Ø50.80 Ø2 0.80 2.62
Type
Equivalent length
m ft
Y joint 0.5 1.64
Header joint 1.0 3.28
Ø12.70(1m/3.3')
Ø12.70(5m/16.4')
Ø19.05(10m/32.8')
Ø15.88(10m/32.8')
Ø9.52(10m/32.8')
Ø6.35(10m/32.8')
Ø15.88(10m/32.8')
Ø9.52(18m/59')
Ø9.52(15m/49.2')
Ø9.52(15m/49.2')
Ø9.52
(15m/49.2')
Ø9.52
(10m/32.8')
MCU-X4NEF1
MCU-X4NEF1
Ø6.35(15m/49.2')
Additional refrigerant charging of MCU kit (kg/unit) (Ibs/ft)
Additional refrigerant charging of MCU is 0.5kg for every
MCU kit
0.5 1.10
Additional refrigerant charging
of distribution kit (kg/m)
(kg/unit) (Ibs/ft)
Remarks
Regardless of the liquid pipe size,
additional refrigerant charging is
0.01kg(0.0067lbs) per meter(ft) after
distribution kit
0.01 0.0067
For wall-mounted &
ceiling indoor unit
 Example of additional refrigerant charging.
Pipe length is as below.
 Additional refrigerant = 25x0.02+83x0.06+6x0.125+20x0.18+1x0.27+(2+18)
x0.01+2x0.5=13.73 kg
Liquid pipe size(O.D.) Total piping length
mm inch m ft
Ø6.35
Ø1/4
Ø6.35
Ø1/4
Ø9.52
Ø3/8
Ø9.52
Ø3/8
Ø12.70
Ø1/2
Ø12.70
Ø1/2
Ø15.88
Ø5/8
Ø15.88
Ø5/8
Ø19.05
Ø3/4
Ø19.05
Ø3/4
Ø22.23
Ø7/8
Ø22.23
Ø7/8
MCU
Pipe length after
distribution kit (m)
2 Ea 20 (2+18)
DVM PLUS3 HR_IM_E_32805-2.indd 17 2011-11-11 오후 4:18:17