DC Inverter Multi VRF System
15
(1)
Use sponge to wrap the un-insulated connection pipe and joint. Then secure the sponge tightly with plastic
tape.
(2)
Connection pipe should not be supported by 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 on the pipe or pipe joints 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.-lb.)
9.5mm(3/8 inch)
35-40N·m(26-29ft.-lb.)
12.7mm(1/2 inch)
45-50N·m(33-37ft.-lb.)
16mm(5/8 inch)
60-65N·m(44-48ft.-lb.)
4.3.4 Outdoor Pipe Connection
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.
Fig. 15