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Total Pipe Length
Length of the farthest pipe
Equivalent length to the farthest pipe of the first distributor
Equivalent length to the nearest distributor
Height difference between
the indoor and air-conditioning units
Height difference between the indoor units
4.6 Installation of distributor
1. The distributor shall use U-type or Y-type, instead of T-type.
2. The distributor shall be installed horizontally, with the deviation angle of no greater than ± 10℃.
3. The distributor cannot be turned directly, with the straight pipe of no less than 0.8 meter.
Direction A
±10°
4.7 Oil return bend settings
Connecting to the second set of indoor units
4. Installation of Connecting Pipe
Table 4-6 Diameter of Pipe
Actual length
Equivalent length
Air-conditioning upper
Air-conditioning lower
Direction B
Connecting to the first set of indoor units
Fig. 4-8 Position of Oil Return Bend at the Height Direction
≤100m
L1+L2+L3+L4+L5+a+b+c+d+e+f
≤60m
L1+L2+L3+L4+L5+f(connecting mode I)
≤70m
or L1+L3+L5+f(connecting mode II)
≤20m
L2+L3+L4+L5+f(connecting mode I) or L3+L5+f(connecting mode II)
≤15m
≤30m
≤20m
≤8m
±10°
High pressure liquid pipe
Low pressure gas pipe
Oil return bend
09
a、b、c、d、e、f
-
-
-
＞0.8m
V.1
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