DC Inverter Multi VRF System
11
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.
Fig.8 Allowable Length and Height Difference of Connection Pipe
Piping parameters of
VEP027N432US
,
VEP034N432US
,
VEP042N432US
.
Allowable
value
Fitting pipe
Total length (actual length) of fitting pipe
250m
L1+L2+L3+a+b+c+d
Length of farthest fitting pipe (m)
Actual length
100m
L1+L2+L3+d
Equivalent length
120m
From the 1
st
branch to the farthest indoor pipe
40m
L2+L3+d
Height difference between ODU and
IDU
ODU at upper side
30m
——
ODU at lower side
30m
——
Height difference between IDUs
10m
——