Installation of Indoor Unit
Caution : Sharp edges and coil surfaces are potential injury hazard. Avoid from contact
with them.
Preliminary Site Survey
• Electrical supply and installation is to conform to local authority's (e.g. National Electrical Board) codes
and regulations.
• Voltage supply fluctuation must not exceed ± 10% of rated voltage. Electricity supply lines must be
independent of welding transformer which can cause high supply fluctuations.
• Ensure that the location is convenient for wiring, piping and drainage
• The indoor unit must be installed in such that free from any obstacles in path of cool air discharge and
warm air return, and must allow spreading of air throughout the room (near the center of the room)
• Clearance must be provided for the indoor unit from the wall and obstacles as shown in the figure.
Beam
Max. 0.3 m
Min 0.5 m
Min 0.5 m
Max. 3.0 m
Min 0.5 m
Floor
Obstacles
• The installation place must be strong enough to support a load of 4 times the indoor unit weight to avoid
amplifying noise and vibration.
• The installation place (handing ceiling surface) must be levelled and the height in the ceiling is 350 mm
or more.
Unit Installation
890.0 mm (ceiling board opening)
790.0 mm (hanging rod)
890.0 mm (ceiling opening)
620.5 mm (hanging rod)
Piping
Direction
Unit size 820.0 mm
Unit size 820.0 mm
Ceiling board opening
MCK-A MCK-B MCK-C
• The indoor unit must be away from heat and steam sources (avoid installing it near an entrance).
• Measure and mark the position for the hanging rod. Drill the hole for the angle nut on the ceiling and fix
the hanging rod.
• The installation template is extended according to temperature and humidity. Check on dimensions in
using.
• The dimensions of the installation template are same as those of the ceiling opening dimensions.
• Before ceiling laminating work is completed, be sure to fit the installation template to the indoor unit.
Note: Be sure to discuss the ceiling drilling work with the installers concerned.
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