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Prevent direct sunlight from
reaching the detector
Do not install behind partitions
In addition, a few important rules must be observed while selecting a
mounting location:
A. Microwave radiation passes through glass and non-metallic walls.
Be sure to adjust the MW range so that it does not exceed the
room limits, or else motion in the next room or moving traffic along
the outer side of the wall will cause the MW sensor to trip.
B. Large reflecting objects (especially metals) in the coverage area
can distort the microwave sensor's coverage pattern.
C. If two DUET-AM units are installed in the same room or on
opposite sides of a shared wall, they should not face each other
and must be mounted at least 2 meters apart.
D. Do not install the DUET-AM in places where one of the two sensor
circuits alarms constantly or intermittently, due to environmental
interference.
E. DUET-AM users are advised to mount the unit in locations
where inadvertent approach to less than 1 m (3 ft) from the
detector is unlikely to occur.
3.2 Mounting
A. Remove the front cover as shown in Figure 3.
IMPORTANT: When re-mounting the cover, remember to fasten the
screw well - this will force the tamper switch actuator upon the tamper
switch and will press it fully in.
Figure 3. Cover Removal
B. Loosen the vertical adjustment screw, slide the PCB up and
remove it via the "keyhole" (see Figure 4).
C. Put the PCB aside until required again.
D. Refer to Figure 5 and punch out the mounting knockouts at
the rear of the base (for surface mounting) or at the angled
sides (for corner mounting). For DUET-AM G3, punch out also
the back tamper screw knockout.
E.
Punch out any one of the wiring knockouts shown in Figure 5.
F. Hold the base against the wall at the selected installation location,
mark the points for drilling and drill the holes (For DUET-AM G3,
also mark and drill hole for back tamper switch screw). Insert the
plastic dowels (supplied) if necessary.
G. Pass the wires through the wiring inlets into the base and attach
the base to the wall using the screws (supplied).
H. Return the PCB to its place within the base.
2
Keep wiring away from
electrical power cables
I. Proceed to wire the terminal block as instructed in Para. 3.3.
Figure 4. PCB Layout
SURFACE
MOUNTING
CORNER
KNOCKOUTS
MOUNTING
KNOCKOUTS
Figure 5. Base after PCB Removal
3.3 Wiring
Refer to Figure 6 and wire up the terminal block:
Figure 6. Terminal Block Wiring
IMPORTANT: To comply with CE safety requirements, connect to
CE-approved control panels with current-limited DC output.
Note: Use RTV to seal the base opening(s) to prevent insects from
entering the detector.
WIRING
KNOCKOUTS
POINTER
FOR DUET-AM G3
ONLY
KNOCKOUT FOR
BACK TAMPER
SWITCH SCREW
CORNER
MOUNTING
KNOCKOUTS
TAMPER SWITCH
ACTUATOR
DE1812
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