ESDB-GUIDE-ENG- 02-21
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SALTO Systems - Universal Energy Saver manual
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2. INSTALLATION
The Surface Mounted Motion Detector will always be ceiling-mounted*.
The Surface Mounted Motion Detector’s installation requires 2 nº 5 screws and their
anchors. Drill two holes in the ceiling using a nº 5 drill bit and then fit the anchors. Finish
by screwing the back cover to the ceiling.
The front part of the unit is fixed to the back cover by turning it slightly counter-
clockwise and then fixing it with the screw included in any of the three holes provided, in
function of the installation positioning.
Note the coverage indicated in the drawings below. It may be necessary to have more
than one device installed in order to have sufficient coverage.
*
Basic Principles
PaPIRs is a pyroelectric infrared sensor that detects variations in infrared rays.
However, it may not detect in the following cases: lack of movement, no temperature
change in the heat source. Besides, it could also detect the presence of heat sources
other than a human body. Efficiency and reliability of the system may vary depending on
actual operating conditions:
1) Detecting heat sources other than the human body, such as:
a) Small animals entering the detection area
b) When a heat source for example sun light, incandescent lamp, car headlights etc, or
strong light beam hit the sensor regardless inside or outside the detection area.
c) Sudden temperature change inside or around the detection area caused by hot or
cold wind from HVAC, or vapor from the humidifier, etc.
2) Difficulty in sensing the heat source
a) Glass, acrylic or similar materials standing between the target and the sensor may
not allow a correct transmission of infrared rays.
b) Non-movement or quick movements of the heat source inside the detection area.
3) Expansion of the detection area
In case of considerable difference in the ambient temperature and the human body tem-
perature, detection area may be wider apart from the configured detection area.
