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4. Indoor Unit Installation
(2) Indoor unit installation
* As shown in the following figure,
install the left bracket into nut and
gasket of hanging bolt.
* After ensuring that the left bracket
is correctly installed on the nut and
gasket, install the right bracket of the
indoor unit on the nut and washer.
(When mounting the indoor unit, the
hanging bolt can be moved slightly.)
4.3.4 Horizontal Adjustment of the Indoor Unit
(1) Ensure that the top is even and measure the largest top gradient.
(2) As shown in figure 4.7, the back of the indoor unit is slightly lower than its front (0inch(0mm) -
13/64inch(5mm)), which facilitates drainage work.
(3) Once the position is adjusted, tighten the hanging nut. Apply the thread locking agent to prevent
loosing the hanging nut.
NOTICE
Cover the machine with plastic cloth during the installation to keep it clean.
•
4.3.5 Connection of Air Duct
The air duct is connected with the indoor unit by a canvas hose which insulates noise and shake
effectively. The indoor unit is equipped with a hole flange, to connect the air duct.
Ducted IDU machine must be connected with the return air duct, direct inhalation of high temperature
air in the attic is prohibited.
(Example):
Static pressure
box
Discharge
Ventilation
Figure 4.7 Gradient of the Top Surface
Thermal insulation
Canvas air
material
Duct
Level
Air volume
Maintenance openings
adjustment valve
23-5/8 × 23-5/8 (600 × 600)
(Fine tuning
air volume)
Figure 4.8 Gradient of the Top Surface
-8-
Stand bar
Suspension bolts
Stand bar
Nuts and
Indoor unit
Washers
Figure 4.6 Hoisting method
[Unit: in. (mm)]
[Unit: in. (mm)]
Canvas air
Static pressure
Duct
box
Air volume
adjustment valve
External air
(External air that passes
through the filter)
Return air inlet
(With the filter screen)
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