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16-05-2012, 02:24 AM,
Wired Passive Infra-Red Movement Detectors
Installation and Operating Instructions

These instructions should be read in conjunction
with your System Installation and Operating
Manual and be retained for future reference.
These Passive Infra-Red (PIR) Movement Detectors are
designed for use with Response wired Intruder Alarm systems.
PIR detectors are designed to detect movement in a protected
area by detecting changes in infra-red radiation levels caused
for example when a person moves within or across the
detectors field of vision. If movement is detected, the signal
contacts "open" and an alarm signal is generated at the Control
Panel (if the system is armed).
Note: Do not exceed the maximum number of PIR detectors
permissible for the Zone where the PIR is to be installed or for
the system in total. These will be stated in the System
Installation and Operating Manual.
Positioning the Detector
The PIR detector is suitable for mounting in dry interior
locations only.
It is recommended that the PIR detector is mounted in the
corner of a room at a height of approximately 2.2m. At this
height the detector will have a 12m range with a 90º field of
vision. If required the detector may be mounted at an 8° angle
to tilt downwards and change the detection pattern.
When considering and deciding upon the mounting position for
the detector the following points should be considered to
ensure trouble free operation:
1. Ideally the detector should be positioned where the logical path
of an intruder would cut across the fan detection pattern of the
PIR. PIR detectors respond more effectively to movement
across the device than to movement directly towards it.
2. Do not position the detector facing a window or where it is
exposed to direct sunlight. For this reason PIR detectors
are not suitable for use in conservatories.
3. Do not position the detector where it is exposed to draughts.
4. Do not position the detector directly above a heat source,
(e.g. fire, radiator, boiler, etc).
5. Do not position the detector in a position where it is subject
to excessive vibration.
Note: When the system is armed, household pets should not
be allowed into an area protected by a PIR as their movement
would trigger the PIR and activate the alarm. Alternatively a PIR
protected Zone may be 'Omitted' to allow for pet movement.
This facility may not be available with all Control Panels, (refer to
your System Installation and Operating Manual for details).
Installing the Detector
1. Having chosen a suitable position to locate the PIR
detector, run the required length of 6 core alarm cable back
to the Control Panel.
Do not make any connections at this stage.
2. Slightly loosen the cover retaining screw on the PIR and
remove the cover. Carefully remove the PCB by unclipping
the PCB retaining clip at the bottom left of the casing.
IMPORTANT: Do not touch the PIR sensor in the middle of
the PCB as any marking may impair the unit’s performance.
If accidentally touched, clean with a dry lint free cloth.
3. The unit can be mounted for the standard 12m range by using
the top two side holes, or tilted down by 8° using the bottom
two side holes. Alternatively, the unit can be ceiling
mounted using the two holes in the extreme top of the casing.
Cable entry cut outs are provided top and bottom, as required.
4. Carefully cut (or drill) out the required mounting holes and
cable entry. Only remove the minimum required number of
screw or cable entry holes, to avoid insects entering the
detector and causing false triggering.
Mount the unit using two 18mm No.4 screws and 25mm wall
plugs as required, (a 5mm hole will be required for the wall plugs).
Note: Do not over-tighten or use larger headed screws when
mounting the unit, as this may distort the casing.
Wiring the Detector
IMPORTANT: Before making any connections, ensure that the
existing system if fully shut down and all power, (mains and
back-up battery) at the Control Panel is removed, (refer to your
System Installation and Operating Manual).
It is important that the 12V power supply wiring is connected in
parallel with any existing wiring and that the Zone and Tamper
circuit wiring is connected in a SERIES loop with existing wiring
to the appropriate terminals on the Control Panel.
1. Thread the cable through the entry on the base, then strip
back 5mm of each core, twist the strand ends then fold over
and wire into the appropriate terminals on the PIR.
The terminals on the PIR and the wires in the cable are colour
coded. The correct colour coding should be followed
throughout the entire system.
Note: If your existing system is using a non-standard colour
coding system for the wiring, then this must be followed.
Red +12V supply to PIR, (connect in parallel).
Black 0V supply to PIR, (connect in parallel).
Blue/Yellow normally closed detector alarm zone
circuit, (connect in series).
Green & White normally closed tamper zone circuit,
(connect in series).
Full and detailed wiring instructions are detailed in your
System Installation and Operating Manual.
2. Carefully refit the PCB into the casing taking care not to touch
the PIR detector lens.
3. The PIR detector incorporates an anti false alarm feature
designed to compensate for situations where the detector may
be affected by environmental changes, (e.g. insects, air
temperature, etc). This feature is called "Pulse Count" and
may be selected for 1, 2 or 3 pulse detection.
The factory default and recommended setting is for 2 Pulse
detection. However, in cases of extreme environmental
problems, or if unattributable false alarms are experienced, it
may be necessary to set "Pulse Count" 3.
Note: The higher the Pulse Count the more movement will be
necessary before the PIR detector will trigger the alarm.
Pulse Count Jumper Positions
4. Refit the cover and tighten the retaining screw.
5. The PIR is now ready to be connected to the Control Panel or
to an existing PIR detector, and tested.
Testing the Detector
Once the PIR detector has been fully installed, reconnect the
power to the alarm system and test the new PIR and the system in
accordance with your System Installation & Operating Manual.
Note: After reconnecting the power to the system allow at least 4
minutes for any PIR(s) to stabilise before testing.
Tell me, and I'll forget. Show me, and I'll remember. Involve me, and I'll learn.

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