DC Inverter Multi VRF System
10
4.2.2 Allowable Length and Height Difference of Connection Pipe
Y type branch joint is used to connect indoor and outdoor units. Connecting method is shown
in the figure below:
NOTICE!
Equivalent length of one Y-type branch is 0.5m(1-1/2 feet).
Fig.5 Allowable Length and Height Difference of Connection Pipe
Piping parameters of V5BV-36WMAK
ǃ
V5BV-48WMAK
ǃ
V5BV-60WMAK
Allowable value
Fitting pipe
m
feet
Total length of fitting pipe
300
1000
L1+L2+L3+a+b+c+d
Length from farthest fitting pipe
120 120
400
L1+L2+L3+d
150 150
500
From the 1
st
branch to the farthest indoor pipe
40
130
L2+L3+d
Height difference between ODU
and IDU
50 50
165
——
40 40
130
——
Height difference between IDUs
15
50
——
