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4) Relocate the air-in grid in the procedure of reversed order, install the air-in grid.
3. Indoor unit installation Model 18-24, 30-36-48
(1) Install the main body
A. The existing ceiling (to be horizontal)
a. Please cut a quadrangular hole of 880X880mm in the ceiling according to the shape of the
installation paper board. (Refer to Chart 3, 4)
The center of the hole should be at the same position of that of the air conditioner body.
Determine the lengths and outlets of the connecting pipe, drain pipe and cables.
To balance the ceiling and to avoid vibration, please enforce the ceiling when necessary.
b. Please select the position of installation hooks according to the hook holes on the installation board.
Drill four holes of 12mm, 45~50mm deep at the selected positions on the ceiling. Then embed the
expansible hooks (fittings).
Face the concave side of the installation hooks toward the expansible hooks. Determine the length
of the installation hooks from the height of ceiling, then cut off the unnecessary part.
If the ceiling is extremely high, please determine the length of the installation hook according to facts.
The length could be calculated from Chart5:
Length=H-181+L(in general, L is half of the whole length of the installation hook)
c. Please adjust the hexangular nuts on the four installation hooks evenly, to ensure the balance of the
body.
If the drainpipe is awry, leakage will be caused by the malfunction of the water-level switch.
Model 18-24
9
30-36-48
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