Multi Variable Air Conditioners Ducted Type Indoor Unit
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(2) Tighten the flaring nut with torque wrench.
Fig.4.2.1
(3) Use pipe bend when bending the pipe and the bending angle should not be too small.
(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 Drain 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 hole and wire
binder. Can‘t connect the drainage hole and drainage hole with glue.
(5) When the drainage pipelines are used for several units, the position of pipeline should be
about 100mm (4 in.) lower than the drainage port of each unit. In this case, thicker pipes
should be applied.
Fig 4.3.1
4.3.2 Drainage pipe installation
(1) Insert the drain hose into the drain hole and tighten it with tapes, as shown in Fig 4.3.2.
(2) Tighten the pipe clamp, with the distance between screw nut and hose smaller than 4mm
