Lennox VEP034N432US - Indoor Branch and Inter-Branch Piping Selection

DC Inverter Multi VRF System
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4.2.4 Selection of Indoor Branches
Select indoor branches according to the total capacity of downstream indoor units. If the capacity
exceeds that of the outdoor unit, capacity of outdoor unit prevails.
Fig.10
R410A Refrigerant system
Total capacity of downstream indoor units X (kW)
Model
Y type branch
X<20 VEBC01A
20≤X≤30
VEBC01B
30<X≤70
VEBC02A
70<X≤135
VEBC03A
135<X
VEBC04A
4.2.5 Dimension of Pipe between Indoor Branches
Select pipe between indoor branches according to the capacity of downstream indoor units; if the
capacity exceeds that of the outdoor unit, capacity of outdoor unit prevails.
Fig. 11
Total capacity of downstream indoor units C (kW)
Gas pipe (mm)
Liquid pipe (mm)
C≤5.6
Φ12.7
Φ6.35
5.6<C≤14.2
Φ15.9
Φ9.52
14.2<C≤22.4
Φ19.05
Φ9.52