BGH BV-V28W/DHN1 Manual page 81

VRF 50/60Hz
3.7 Branch Joints
Branch joint design should take account of the following:
U-shaped branch joints should be used – tee joints are not suitable. Branch joint dimensions are given in Tables 3-3.7.
•
• To ensure even distribution of refrigerant, branch joints should not be installed within 500mm of a 90° bend, another
branch joint or the straight section of piping leading to an indoor unit, with the minimum 500mm being measured
from the point where the branch joint is connected to the piping, as shown in Figure 3-3.6.
Figure 3-3.6: Branch joint spacing and separation from bends (unit: mm)
500 or more
Table 3-3.8: Indoor branch joint dimensions (unit: mm)
Model
FQZHN-01D
FQZHN-02D
80
500 or more
500 or more
Indoor
unit
Gas side joints
500 or more
500 or more
Indoor Indoor
unit unit
Liquid side joints