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58
12.2.2 Cassette indoor unit installation
12.2.2.1 Service space for indoor unit
12.2.2.2 Bolt pitch
12.2.2.3 Install the pendant bolt
Select the position of installation hooks
according to the hook holes positions showed
in upper picture.
Drill four holes of Ø12mm, 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
depending on the real situation.
12.2.2.4 Install the main body
Make the 4 suspender through the 4 hanger of
the main body to suspend it. Adjust the
hexangular nuts on the four installation hooks
evenly, to ensure the balance of the body. Use
a leveling instrument to make sure the
levelness of the main body is within ±1°.
Adjust the position to ensure the gaps between
the body and the four sides of ceiling are even.
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