Multi Variable Heat Pump Floor and Ceiling Type Indoor Unit
8
Fig.4.1.3
4.2 Refrigerant Pipe Connection
(1) Align the flaring port of copper pipe with the center of screwed joint and then tighten the flaring nut by
hand as shown in Fig. 4.2.
(2) Tighten the flaring nut with torque wrench.
Fig.4.2
(3) Use pipe bender when bending the pipe. The bending angle should not be too small.
(4) Wrap the connection pipe and joint with sponge and secure 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 as short as possible and the downward slope 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 wrap insulation around the drainage pipe.
Improper installation may lead to water leakage.
(4) Use normal hard PVC pipe for 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
(4 inch) lower than the drainage port of each unit. In this case, larger pipes should be applied.
Fig.4.3.1.1
