Gree GMV-120WM/B-F

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
47
5.3 Allowable pipe length and drop height among indoor and outdoor
units
Y type branch joint is adopted to connected indoor and outdoor units. Connecting method is
shown in the figure below.
Remark: Equivalent length of one Y-type manifold is about 0.5m(1-3/4feet).
L10: Length from the first branch to the farthest IDU;
L11: Length from the first branch to the nearest IDU;
Equivalent length of branch of IDU is 0.5m(1-3/4feet).
R410A Refrigerant System
Allowable Value
m(feet)
Fitting Pipe
Total length (actual length) of fitting pipe
≤1000(3280-3/4)
L1+L2+L3+L4+…+L9+a+b+…+i+j
Length of farthest
fitting pipe m(feet)
Actual length
≤165(541-1/4)
L1+L6+L7+L8+L9+j
Equivalent length
≤190(623-1/4)
Difference between the pipe length from the first
branch of IDU to the farthest IDU and the pipe
length from the first branch of IDU to the nearest
IDU
≤40(131-1/4)
L10-L11