Gree GMV-24WL/C-T, Service Manual

Page: 79 / 150

GREE DC Inverter Side Discharge VRF
Ⅱ
for North America
76
6.1.2 Indoor Pipe Connection
(1) Remove pipe cover and pipe plug.
(2) Direct the flared part of copper pipe to the center of screwed joint. Twist on the flared nut tightly
by hand, as in Fig. 13. (Make sure indoor pipe is correctly connected. Improper location of the
center will prevent flared nut from being securely twisted. Thread of nut will get damaged if the
flared nut is twisted forcibly.)
(3) Use torque wrench to twist on the flared nut tightly until the wrench gives out a click sound.
(Hold the handle of wrench and make it at right angle to the pipe. as in Fig. 14
(1) Use sponge to wrap the un-insulated connection pipe and joint. Then tie the sponge tightly with plastic tape.
(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.
Fig. 13 Fig. 14
Pipe Diameter Tightening Torque
6mm(1/4inch) 15-30N·m(11-22ft.-1b.)
9.5mm(3/8 inch) 35-40N·m(26-29ft.-1b.)
12.7mm(1/2 inch) 45-50N·m(33-37ft.-1b.)
16mm(5/8 inch) 60-65N·m(44-48ft.-1b.)
19.05mm(3/4 inch) 70-75N·m(52-55ft.-1b.)
6.1.3 Outdoor Pipe Connection
(1) Pipe connection for GMV-36WL/A-T(U)
、
GMV-48WL/A-T(U)
、
GMV-36WL/C-T(U)
、
GMV-48WL/C-T(U)
Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for
indoor pipe connection.
According to customer requirement or space limit, outlet pipe can be installed from the front, right
or rear side.