Pipe Bending; Indoor Pipe Connection - Gree GMV-ND07PLS/A-T(U) Service Manual

4.2 Pipe Bending

(1) Reshape the pipe by hand. Be careful not to damage the pipe.
(2) Do not bend the pipe over 90° .
(3) If pipe is repeatedly bent or stretched, it will get hard and difficult to bend and stretch again.
Therefore, do not bend or stretch the bend for over 3 times.
(4) In case that direct bending will open cracks to the pipe, first use sharp cutter to cut the insulating
layer, as shown in Fig. 4.3. Do not bend the pipe until it is exposed. When bending is done, wrap the pipe
with insulating layer and then secure it with adhesive tape.
Correct

4.3 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. 4.4. (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. 4.5
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 s mall joints of IDU with force in case the
capillary tube or other tubes have cracks and cause leakage.
Multi Variable Air Conditioners Indoor Unit for North America
Wrong
Fig. 4.2
Fig. 4.4
99
Fig. 4.3
Fig. 4.5