Mitsubishi Electric CITY MULTI Smart ME Controller Manuel D'installation page 6

5 How To Install
This remote controller is for the wall installation. It can be installed either in the switch box or directly
on the wall. When performing direct wall installation, cables can be thread through either back or top
of the remote controller.
(1) Selecting an installation site
Install the remote controller (switch box) on the site where the following conditions are met.
(a) A flat surface
(b) A place where the remote controller can measure the accurate room temperature and humidity
Sensors to monitor the room temperature are on the indoor unit and on the remote controller.
When the room temperature is monitored with the sensor on the remote controller, the main
remote controller monitors the room temperature. When using the sensor on the remote controller,
follow the instructions below.
• To monitor the accurate room temperature and humidity, install the remote controller away from
direct sunlight, heat sources, and the supply air outlet of the air conditioner.
• Install the remote controller in a location that allows the sensor to measure the representative
room temperature and humidity.
• Install the remote controller where no wires are routed around the temperature sensor on the
controller or where no obstacles block the air inlet, otherwise the sensor cannot measure accurate
room temperature and humidity.
• After the controller has been exposed to high humidity (above 80%RH) for 60 hours, the humidity
detection value will be offset by 3%RH.
When the ambient humidity drops below 80%RH, the offset will be gradually cancelled.
• Do not install the controller where it is exposed to high concentration of acid, alkaline, or volatile
organic compounds.
• If exposed to cigarette smoke for a long time, the humidity detection value will be offset.
(c) Install the remote controller where occupancy and brightness can be properly detected.
The remote controller has an occupancy sensor and a brightness sensor.
Each sensor has a sensor-detection zone.
• Install the remote controller where the coverage area covers the appropriate area in the room.
The maximum distance the sensor can detect occupancy is approximately 10 m (32 ft).
Horizontal direction
Wall
Remote
controller
110°
Figure 1
: Detection area
* As an inherent characteristic of the occupancy sensor, it is more sensitive to movements across
the area indicated by
Occupancy sensor
than to movements straight toward the sensor.
– 6 –
Vertical direction
11°
Wall
Remote
controller
31°
20° Floor
Figure 2