Lennox VEPS075N432K User Manual page 15

DC Inverter Multi VRF System
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.5 Allowable Length and Height Difference of Connection Pipe
Piping parameters of VEPS075N432K , VEPS096N432K , VEPS120N432K :
Total length (actual length) of fitting pipe
Length of farthest fitting pipe (m)
From the 1 st branch to the farthest indoor pipe
Height difference between ODU and
IDU
Height difference between IDUs
Actual length
Equivalent length
ODU at upper side
ODU at lower side
9
Allowable
value
300m L1+L2+L3+a+b+c+d
120m
150m
40m
50m
40m
15m
Fitting pipe
L1+L2+L3+d
L2+L3+d
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