Air Conditioner Service Manual
39
cassette
Duct
How to mount outlet pipe.
Generally, we have two types of outlet pipe
available, i.e. rectangular or round ones.
Rectangular air conduit can be directly
connected to air outlet of indoor unit by rivets.
For outlet dimensions, see outline drawing of
the unit.
Round air conduit should be connected to a
piece of transitional air conduit before it is
connected to air outlet of indoor unit, the other
end of it can be separately connected to air
conduit window or connected to air conduit
window after air flow diversion, and the total
length should not be over 6m. As shown in
figure below, air speeds at all air outlets should
be set to basically consistent so as to meet the
room air-conditioning requirements.
Installation method for return air pipe
In case sidewise air intake is adopted, return
air pipe should be fabricated and rivet-
connected to return air orifice, and the other
end of it should be connected to return air
window.
In case of underside air intake, purchase or
fabricate a section of pleated canvas air
conduit serving as transition joint for return air
orifice and return air window. in this way, it can
be freely adjusted according to height of indoor
ceiling board; in addition, during operation of
the unit , canvas air conduit may avoid
vibration of ceiling board, as shown in figure
below.
10.2.2
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.
10.2.3
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.
5mm
Indoors
Outdoors
Tight en nut M10
Le vel I ndi cator
Han ging Sc rew Bolt
Hanging Screw Bolt M10
Install it dow n the
insta lling-ea r
Locking Nut M1 0
H anging Ear
10
G asket
Indoor Unit
Cei ling
Installation Plate
30mm
43
m
m
Must Be Fixed Tight
Gradienter
Indoor unit
Air-outlet w indow
Outlet pipe
Trans itional air
co nduit
Ai r in let
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
