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SMMS 1-Way Cassette YH Type
Installation Manual
EN
SMMS 1-Way Cassette YH Type
Installation Manual
Installation under high-humidity atmosphere
In some cases including the rainy season, especially inside of the ceiling may become high-humidity atmosphere
(dew-point temperature: 23 °C or higher).
1. Installation to inside of the ceiling with tiles on the roof
2. Installation to inside of the ceiling with slated roof
3. Installation to a place where inside of the ceiling is used for pathway to intake the fresh air
4. Installation to a kitchen
• In the above cases, additionally attach the heat insulator to all positions of the air conditioner, which come to
contact with the high-humidity atmosphere. In this case, arrange the side plate (Check port) so that it is easily
removed.
• Apply also a sufficient heat insulation to the duct and connecting part of the duct.
Installation space
(Unit: mm)
Reserve sufficient space required for installation or service work.
[Reference]
Condensation test conditions
Indoor side: 27 °C dry bulb temperature
24 °C wet bulb temperature
Air volume:
Low air volume, operation time 4 hours
1000 mm
and more
Refrigerant piping port
Ceiling inside height :
245 mm or more
1000 mm
and more
2000 mm
and more
Ceiling
Filter cleaning sign term setting
The lighting term setup of the filter sign (Notification of filter cleaning) of the remote controller can be changed
according to the condition of installation.
For setup method, refer to “Filter sign setting” in the Applicable controls of this Manual.
Removal of protective rubbers
Before installation of the indoor unit, remove the two protective rubbers for transportation which are inserted
between the reinforcing bracket for the fan motor and the casing.
(Hand over the protective rubbers for transportation to the customers and ask to keep them because they may be
used for transportation such as reinstallation.)
Wireless remote controller
The sensor of indoor unit with wireless remote controller can receive a signal by distance within approx. 8 m. Based
upon it, determine a place where the remote controller is operated and the installation place.
• Operate the remote controller, confirm that the indoor unit receives a signal surely, and then install it.
• Keep 1 m or more from the devices such as television, stereo.
(Disturbance of image or noise may generate.)
• To prevent a malfunction, select a place where is not influenced by a fluorescent light or direct sunlight.
• Two or more (Up to 6 units) indoor units with wireless type remote controller can be installed in the same room.
Protective rubbers for
transportation (remove)
Reinforcing bracket
Pull upward to remove
Casing
8 m
or l
es
s
15-EN
16-EN
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