Air Conditioner Service Manual
25
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.
7.2.7
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.
⚫
Insert the pipe connection into the relative slot.
⚫
Press to join the pipe connection to the base.
For Cassette and Duct type
⚫
The drain pipe of indoor unit must have the
heat insulation , or it will condense dew, as
well as the connections of the indoor unit.
⚫
The declivity of the drain pipe downwards
should not be over 1/100, and no winding and
bending.
⚫
The total length of the drain pipe when pulled
out traversely shall not exceed 20m , when the
pipe is over long, a prop stand must be
installed every 1.5 to 2m to prevent winding.
⚫
Refer to the following figures about the
installation of the pipes.
⚫
Do not impose any pressure on the connection
part of the drainage pipe.
7.2.8
Electronic connections of outdoor unit
1. Take the cover away.
2. Connect the cable wires to the terminal board
using the same numbering as in the indoor unit.
3. For the electrical connections, see the wiring
diagram on the back of the cover
4. Fasten the cables with a cable-clamp.
5. An efficient earth connection must be ensured.
6. Replace the covers.
Wiring diagram on the back of
the cover Screw
Remove the upper cover
Outdoor
unit
7.2.9
Connecting the pipe of outdoor unit
Screw the flare nuts to the outdoor unit coupling
with the same tightening procedures described for
the indoor unit.
Note: If the tightening torque is not sufficient, there
will probably be some leakage. With excessive
tightening torque there will also be some leakage,
as the flange could be damaged.
torque wrench
YES
NO
NO
connection pipes
flare nuts
liquid tap
gas tap
indoor unit
protection caps
Liquid valve
gas valve
service port nut
tap
VP30
Support
Be nd
Up and Dow n
F old
As long as possib le a bou t (10 mm )
Le an Dow nwa rd
over 1/10 0
1.5m~2m
L ean Dow nw ard ove r 1/100