Multi Variable Air Conditioners Floor and Ceiling Type Indoor Unit
11
pipe joint of indoor unit
wrench
torque wrench
flaring nut pipe joint
Torque for tightening nut
Pipe diameter (mm)
Torque (N·m)
Ф6.35
15~30
Ф9.52
35~40
Ф12.7
45~50
Ф15.9
60~65
Fig.4.2
(3) The pipe should not be bent too much or it may crack. Use a pipe bender when bending the
pipe.
(4)
Wrap the connection pipe and joint with sponge and then tie them firmly with tape.
4.3 Drainage Pipe Installation and Drainage System Testing
4.3.1 Notice for Installation of Drainage Pipe
(1) The drainage pipe should be short and the gradient downwards should be at least 1%~2% in
order to drain condensation water smoothly.
(2) The diameter of drainage hose should be bigger or equal to the diameter of drainage pipe
joint.
(3)
Install drainage pipe according to the following fig and arrange insulation to the drainage pipe.
Improper installation may lead to water leakage and damp the furniture and other things in the
room.
(4) You can buy normal hard PVC pipe used as the drainage pipe. During connection, insert the
end of PVC pipe into the drainage hole and then tighten it with drainage hose and wire binder.
Never connect the drainage hole and drainage hose with glue.
(5) When the drainage pipelines are used for several units, the position of pipeline should be
about 100mm lower than the drainage port of each unit. In this case, thicker pipes should be
applied.
additional drainage pipe
insulating
pipe
insulating tape
drainage pipe
of indoor unit
Fig 4.3.1.1
(6) Connect the drainage pipe properly, as shown in Fig 4.3.1.2.
