FIRES
W IN DO W S
BO ILER S
R ADIATO RS
PIR
B
B
B
C
C
A
A
Features
EXTRA Low (8 mA) current draw @12V DC operation.
S.M.D. Technology.
Range : Up to 12m,
Coverage : Up to 110
∘
Convex honey comb, hemispherical infra-red lens.
Walk test LED.
High RFI & EMI Immunity.
Pulse Counter (1, 2 and 4 pulses selectable)
Mounting Location
The PIR is designed for indoor use. It should not be mounted near to
large metal objects or on metal surfaces. It needs to be mounted on a
wall or in a corner at a height of approximately 2-2.5meters for the
best general coverage in an average room. The detector has been
designed to avoid false alarms, nevertheless, it is best to avoid looking
directly at sources of heat such as fires and boilers, and always try to
keep away from a window. A PIR can look at a radiator but should not
be sited above one.
Do not site a PIR where its field of view may be obstructed (e.g. by curtains). Also note that PIRs work best when sensing
movement across rather than along their detection beams. You need to consider the need to wire these units back to the Control
Unit.
Mounting the detector
1.
Remove and retain the screw from the bottom of the
PIR and lift off the cover.
2.
Carefully remove the electronic module from its retaining
clips, ensuring not to touch the pyroelectric sensor
(Illustration 1).
3.
Use mounting points “A”, if you are fitting the detector in a corner. Use mounting points “B”, if you are fitting the detector
on a flat surface. Use a small drill to create two fixing holes at the mounting points (Illustration 2).
4.
Hold the base of the PIR in the chosen position, ensuring that the front of the PIR will face
towards the center of the protected area, mark and drill two fixing holes in the wall.
Choose one of the cable entry holes “C” and make a third hole in the detector base. Put one end of the wire through this
hole “C”, then secure the PIR to the wall.
5.
Replace the electronic module into the retaining clips, ensuring that it is correctly positioned and firmly seated.
6.
If required, select the PIR LED “ON” or “OFF” option and the sensitivity
(pulse count) by setting the corresponding jumpers on the electronic module. Note that Pulse 1 option is more sensitive
than the pulse 4 option. Pulse 1 option is used when it is necessary to activate an alarm on the first detected pulse, or in
high security installations – where fast “catch” performance is of greatest importance. Pulse 2 or 4 settings provides
improved protection against false alarms caused by all types of environmental disturbances. (Illustration 3)
Pulse Count
Pulse 1
Pulse 2
Pulse 4
G
Sensor
4
3
1
RELAY TEMPER
G
N
D
PULSE
LED
-10
-5
0
5
Illustration 3
AD04N PIR DETECTOR
Illustration 1
Illustration 2
