98
DC Inverter Multi
VRF Service Manual
4.2.1 For outdoor unit with total rated capacity more than or equal to 60.0kW (See the above picture for the piping
methods)
Allowable (m/ft)
value
Fitting pipe
Total length (actual length) of tting pipe 500 L1+L2+L3+L4+…+L8+a+b+…+i
Length of the furthest tting pipe
Actual length 150
L1+L5+L6+L7+L7+ L8+i
Equivalent length 175
Equivalent length of tting pipe
from the 1st branch joint to farthest indoor unit L(m)
40 L5+L6+L7+L7+ L8+i
Height differences between
indoor unit and outdoor unit
Outdoor unit at upper 50 ——
Outdoor unit at lower 40 ——
Height differences between indoor units 15 ——
4.2.2 For outdoor unit with total rated capacity more than or equal to 20.0kW and less than 60.0kW(See the above picture
for the piping methods)
Allowable (m/ft)
value
Fitting pipe
Total length (actual length) of tting pipe 300 L1+L2+L3+L4+…+L8+a+b+…+i
Length of the furthest tting pipe
Actual length 100
L1+L5+L6+L7+L7+ L8+i
Equivalent length 125
Equivalent length of tting pipe
from the 1st branch joint to farthest indoor unit L(m)
40 L5+L6+L7+L7+ L8+i
Height differences between
indoor unit and outdoor unit
Outdoor unit at upper 50 ——
Outdoor unit at lower 40 ——
Height differences between indoor units 15 ——
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