(3)
Precaution for branch pipe connection
Use the branch pipe to connect the outdoor/indoor units. Mount the branch pipes to a pillar, a wall, or a
ceiling.
Keep the inlet pipe of the branch pipe straight, and the length of the straight pipe is no less than 0.5 meter.
4.3 Refrigerant Piping Size
Example of connection: connection of 4 indoor units.
Table 4.1 Piping Size of Main Pipe
Model
Stop Valve(mm)
Pipe between the outdoor unit and the 1st branch pipe
(a);
The pipes between the branch pipe
s(b,c).
Gas
Liquid
Gas
Liquid
Marks
070~090
Φ19.05
Φ9.52
Φ19.05
Φ9.52▲
a; b; c
100
Φ
19.05
Φ12.7
Φ12.7
a; b; c
110~120
Φ
19.05
Φ12.7
Φ12.7
a; b; c
21
Φ22.2
*
Φ25.4
*
