Gree R410A, Manual

Page: 50 / 90

48
for North America
Photovoltaic Direct-driven VRF
2) Connection pipe should be supported by a bearer rather than the unit.
3) The bending angle of piping should not be too small; otherwise the piping might have cracks. Please use
a pipe bender to bend the pipe.
4) When connecting IDU with connection pipe, do not pull the big and small joints of IDU with force in case
the capillary tube or other tubes have cracks and cause leakage.
90
o
Torque
wrench
Common
wrench
Pipe dimension Tightening torque
6mm(1/4inch)
9.5mm(3/8 inch)
12.7mm(1/2 inch)
16mm(5/8 inch)
15-30N•m(1 1-22ft.-1b.)
35-40N•m(26-29ft.-1b. )
45-50N•m(33-37ft.-1b. )
60-65N•m(44-48ft.-1b. )
7.1.3 Outdoor Pipe Connection
Below is the piping diagram of GMV-36WL/B-T(U)
,
GMV-48WL/B-T(U). According to customer requirement or space limit, outlet pipe
can be installed from the front, right or rear side.
Flared nut
Liquid pipe
Gas pipe
7.1.4 Installation of Y-type Branch
1) Y-type Branch
ODU
Field supplied Field supplied
to other branches or IDUs
type branch
Inlet
Outlet 1
Outlet 2