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In case of continued operation of the indoor unit under high-humidity conditions as described below, dew may condense and water
may drop.
Especially, high-humidity atmosphere (dew point temperature: 23°C or more) may generate dew inside the ceiling.
1.
Unit is installed inside the ceiling with slated roof.
2.
Unit is installed at a location using inside of the ceiling as fresh air intake path.
3.
Kitchen
When installing a unit at such place, put insulating material (glass wool, etc.) additionally on all the positions of the indoor unit, which
contact with high-humidity atmosphere.
ADVICE
Set a service check opening panel at right side of the unit (size: 450 × 450 mm or more) for piping, maintenance, and servicing.
When the height of the ceiling exceeds the distance of the item Standard in Table above, the hot air is difficult to reach the floor.
Therefore, it is necessary to change the setup value of the high ceiling switch. (RAS-M16SMUV-E and M16SMUCV-E only)
When changing the setting of the ceiling height in the models, RAS-M10SMUV-E, M10SMUCV-E, M13SMUV-E and M13SMUCV-E, if
it is set over 2.7 m, the hot air is difficult to reach the floor.
How to set the High ceiling switch
• Remove the cover of the electric parts box by taking off the mounting screws (3 positions) and pushing the hooking section. (The
cover of the electric parts box remains hanged to the hinge.)
• There are the selector switches (SW02) on the P.C. board of the electric parts box.
No.1 and No.2 of the selector switches (SW02) are provided to select the height of the ceiling.
According to the ceiling height in the following table, select No.1 or No.2 of the selector switches (SW02).
REMARK
• When using the high ceiling (1) or (2), cold air may be felt due to the temperature drop of discharge air.
Height list of ceiling possible to be installed
Selection of installation place
Ceiling height
Model RAS-
Possible installed ceiling height
M10SMUV-E, M10SMUCV-E, M13SMUV-E, M13SMUCV-E
Up to 2.7 m
M16SMUV-E, M16SMUCV-E
Up to 3.5 m
Model RAS-
M10SMUV-E
M10SMUCV-E
M13SMUV-E
M13SMUCV-E
M16SMUV-E
M16SMUCV-E
SW02
No.1 No.2
Standard (Factory setting)
2.5 to 2.7 m
2.5 to 2.7 m
2.5 to 2.9 m
OFF
OFF
High ceiling (1)
—
—
2.9 to 3.2 m
ON
OFF
High ceiling (2)
—
—
3.2 to 3.5 m
ON
ON
