22
Installation and Maintenance
Service Manual
Fig9.1.8
(6) Remove the washer locating plate and then tighten the nut on it.
9.2 Refrigerant Pipe Connection
(1) Aim the flaring port of copper pipe at the center of screwed joint and then tighten the
flaring nut with hand as shown in fig 9.2.1.
(2) Tighten the flaring nut with torque wrench.
Fig 9.2.1
(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.
Torque for tightening nut
Pipe diameter
mm(in.)
Torque(N·m)
Φ
6.35(1/4)
15
～
30
Φ
9.52(3/8)
35 40
Φ
12.7(1/2)
45 50
Φ
15.9(5/8)
60 65
Φ
19.05(3/4)
70 75
9.3 Drainage Pipe Installation and Drainage System Testing
9.3.1 Notice for Installation of Drain Pipe
(1) The drainage pipe should be short and the gradient downwards should be at least
condensation water smoothly.
1%~2% in order to drain
(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 (Fig 9.3.1).
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(4in
）
.
lower than the drainage port of each unit. In this case, thicker pipes should be applied.
Fig 9.3.1
