Leveling the Indoor Unit
•
If there is an opening in the ceiling, it should be reinforced to keep it flat and prevent vibration.
• If the support structure of the ceiling is not strong enough, a beam made of angle iron can be
used to mount the unit to for added support.
• If the indoor unit is not installed in an air conditioned area, please insulate around the unit
to prevent condensation. The thickness of the insulation depends on the actual installation
environment.
After installation of the indoor unit, the leveling must be checked to make sure the unit is kept
horizontal fore and aft and a downward slope of 5° is kept toward the drain pipe left and right as
shown below.
Installation with Air Supply Connections
4
6
8
3
7
5
1
2
3
Return air
Supply air
Return air
No.
Name
No.
Name
1
Hanger
5
Plenum Box
2
Return Air Connection
6
Filter Screen
3
Flexible Connection
7
Main Air Supply Connection
4
Return Air Outlet
8
Air Supply Outlet
Check with a level.
Installation with Rectangular Connections
10
Ceiling Concealed Unit
