Air Conditioner Service Manual
24
vibration of ceiling board, as shown in figure
below.
7.2.2
Drilling a hole in the wall for the piping
1)
Decide where to drill the hole in the wall for the
piping (if necessary) according to the position of
the mounting plate
2)
Install a flexible flange through the hole in the
wall to keep the latter intact and clean.
The hole must slope downwards towards the
exterior.
Note: Keep the drain pipe down towards the
direction of the wall hole, otherwise leakage may
occur.
7.2.3
Electrical connections---Indoor unit
1).Lift the front panel.
2).Take off the cover as indicated in the picture
(by removing a screw or by breaking the hooks).
3).For the electrical connections, see the circuit
diagram on the right part of the unit under the
front panel.
4).Connect the cable wires to the screw terminals
by following the numbering, Use wire size
suitable to the electric power input (see name
plate on the unit) and according to all current
national safety code requirements.
5).The cable connecting the outdoor and indoor
units must be suitable for outdoor use.
6).The plug must be accessible also after the
appliance has been installed so that it can be
pulled out if necessary.
7).An efficient earth connection must be
ensured.
8).If the power cable is damaged, it must be
replaced by an authorized Service Centre.
7.2.4
Refrigerant piping connection
The piping can be run in the 3 directions indicated
by numbers in the picture. When the piping is run
in direction 1 or 3, cut a notch along the groove on
the side of the indoor unit with a cutter.
Run the piping in the direction of the wall hole and
bind the copper pipes, the drain pipe and the
power cables together with the tape with the drain
pipe at the bottom, so that water can flow freely.
7.2.5
Connecting the pipes.
⚫
Do not remove the cap from the pipe until
connecting it, to avoid dampness or dirt
from entering.
⚫
If the pipe is bent or pulled too often, it will
become stiff. Do not bend the pipe more
than three times at one point.
⚫
When extending the rolled pipe, straighten
the pipe by unwinding it gently as shown in
the picture.
7.2.6
Connections to the indoor unit
Fr ont panel
Terminal block cover
Wiring diagram
5mm
Indoors
Outdoors
3
2
1
Shape the connection pipe
NO
YES
Extending the rolled pipe
Installation mode for sidewise air intake
Unit
Canvas air conduit
Return air pipe
Return air window
Rivet
Unit
Return air pipe
Canvas air conduit
Ri vet