Samsung Electronics14-19
■ Selecting additional refrigerant
• It depends on the total length of the liquid side pipe after the first Y-Joint.
• Example of calculating additional refrigerant : In case of 30HP outdoor unit
Liquid side pipe ø22.23
Total pipe length(m)x0.35
a : ø19.05x30m
b : ø15.88x10m
c : ø9.52x10m
d : ø9.52x10m
e : ø9.52x10m
f : ø9.52x10m
g : ø6.35x10m
h : ø6.35x10m
i : ø12.70x10m
j : ø6.35x10m
k : ø6.35 x 9m
Liquid side pipe ø19.05
Total pipe length(m)x0.27
Liquid side pipe ø15.88
Total pipe length(m)x0.18
A=
A= ++++= 14.33
30x0.27 10x0.18 10x0.125 40x0.06 49x0.02
+++
Liquid side pipe ø12.70
Total pipe length(m)x0.0125
Liquid side pipe ø9.52
Total pipe length(m)x0.06
Liquid side pipe ø6.35
Total pipe length(m)x0.02
++
14-5 Calculation for additional refrigerant
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