DC Inverter Multi VRF System User Manual
8
4.2.2 Allowable Length and Height Difference of Connection Pipe
Y type branch joint is adopted to connect indoor and outdoor units. Connecting method is shown
in the figure below:
Note: Equivalent length of one Y-type branch is 0.5m.
a
d
c
b
The 1 branch section
Each Y-type branch equals to 0.5m and each branch header equals to 1.0m.
L1
L2
L3
Outdoor
Indoor
Intdoor
Intdoor
Intdoor
st
Fig.5 Allowable Length and Height Difference of Connection Pipe
Piping parameters of
CHV-5S120NK
,
CHV-5S140NK
and
CHV-5S160NK
:
Allowable value
Fitting pipe
Total length (actual length) of fitting pipe
300m
L1+L2+L3+a+b+c+d
Length of farthest fitting
pipe (m)
Actual length
120m
L1+L2+L3+d
Equivalent length
150m
From the 1
st
branch to the farthest indoor pipe
40m
L2+L3+d
Height difference
between ODU and IDU
ODU at upper side
50m
—
ODU at lower side
40m
—
Height difference between IDUs
15m
—
