4.2.4 Selection of Indoor Branches
Select indoor branches according to the total capacity of downstream indoor units.
R410A
Refrigerant system
Y-type branch
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, please select according to the capacity of outdoor units.
Total capacity of downstream indoor unit C(kW)
Total capacity of downstream indoor units X (kW)
C ≤5.6
5.6<C≤14.2
14.2<C≤22.0
Fig.9
X<20
20≤X≤30
30<X≤70
70<X≤135
135<X
Fig.10
Gas pipe (mm)
Φ12.7
Φ15.9
Φ19.05
12
Model
FQ01A
FQ01B
FQ02
FQ03
FQ04
Liquid pipe (mm)
Φ6.35
Φ9.52
Φ9.52