Air Conditioner Service Manual
36
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.
2.5.4 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.
2.5.5 Connections to the indoor unit
1).Remove the indoor unit pipe cap (check that there
is no debris inside).
2).Insert the fare nut and create a flange at the
extreme end of the connection pipe.
3).Tighten the connections by using two wrenches
working in opposite directions.
When extending the drain hose at the indoor unit,
install the drain pipe.
Wrap the insulation material around the
connecting portion
.
Overlap the connection pipe insulation material
and the indoor unit pipe insulation material. Bind
them together with vinyl tape so that there is no
gap.
Wrap the area which accommodates the rear piping
housing section with vinyl tape.
Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
2.5.6 Indoor unit condensed water drainage
The indoor unit condensed water drainage is
fundamental for the success of the installation.
1).Place the drain hose below the piping, taking
care
not to create siphons.
2).The drain hose must slant downwards to aid
drainage.
3).Do not bend the drain hose or leave it protruding or
twisted and do not put the end of it in water. If an
extension is connected to the drain hose, ensure
that it is lagged when it passes into the indoor unit.
4).If the piping is installed to the right, the pipes, power
cable and drain hose must be lagged and secured
onto the rear of the unit with a pipe connection.
3
2
1
Shape the connection pipe
NO
YES
Extending the rolled pipe
