2
DE1821
3
33
3. INSTALLATION
. INSTALLATION
. INSTALLATION
. INSTALLATION
3.1 General Guidelines
A few important rules must be observed before 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 a rotating ceiling fan in the
next room, or moving traffic along the outer side of the wall
will cause the MW detector to alarm.
B.
Large reflecting objects (especially metals) in the coverage
area can distort the microwave detector's coverage pattern.
C.
Install the unit so that the expected motion of an intruder is
perpendicular to the zones of protection.
D.
Although the DUO 200 is extremely immune to false alarms, it
is recommended to avoid installation in a room with very
strong air turbulence or close to high-power electrical cables.
E.
If two DUO 200 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.
F.
For best performance at high ambient temperatures, it is
advisable to aim the unit towards the coolest place in the
protected area.
G.
Always mount the unit on a firm and stable surface at a height
that renders optimum coverage of the protected area.
Increasing the vertical angle at a certain height will increase
the coverage range.
H.
Do not install the DUO 200 in places where one of the two
detector circuits alarms constantly or intermittently, due to
environmental interference.
3.2 Direct Mounting
The unit can be installed directly on the wall or in a room corner
using the mounting knockouts. Optional swivel brackets permit
greater flexibility when adjusting the coverage area (Section 3.8).
A.
Loosen and remove the screw at the bottom of the case (see
Figure 1) and then take the cover off.
B.
Punch out the appropriate mounting and wiring knockouts in
the base.
Figure 3.
Printed Circuit Board Layout
Notes:
1. For wall surface mounting, use the two elongated
knockouts at the middle of the base. For corner mounting, use
two diagonally opposite knockouts at the angled sides of the
base (see Figure 3).
2. To route the wiring to a lower conduit, use the two wiring
knockouts at the bottom of the base (see Figure 3). To route
the wires under the base towards the ceiling, use the wiring
channel and its associated knockout.
C.
Select the mounting location in accordance with the guidelines
in Section 3.1.
D.
Temporarily remove the PC board from the base. Take care
not to lose the fastening screw.
E.
Use the base as a template for marking the drilling points.
F.
Drill mounting holes and insert masonry anchors if required.
G.
Pass the wires through the punched-out wiring inlet(s) and
mount the base in place using two screws.
H.
Seal all openings in the base with RTV to prevent insects from
entering the unit.
I.
Remount the PC board and secure it with its vertical
adjustment screw.
3.3 Optional Swivel Brackets
The BR-1 is a general purpose swivel bracket used for vertical
and horizontal positioning of the DUO 200. With the BR-1, the
unit can be tilted down from 0° to -30° and swivelled 45° left or
right (see Fig. 4).
The BR-2 is a swivel bracket kit for room corner installations,
consisting of the BR-1 and a corner adapter. The BR-3 is a swivel
bracket kit for ceiling installations. It consists of the BR-1 and a
ceiling mounting adapter.
Figure 4.
Optional Swivel Brackets
Caution!
When a swivel bracket is used, the forward detection
range may be reduced and the dead zone may be affected too.
3.4 Wiring
Connect wires to the terminal block in the following order:
Terminal:
TAMP
(tamper switch)
Connect to:
A normally closed 24-hour tamper zone of the
control panel.
Details:
When the cover is removed, the tamper switch contacts
open.
Terminal:
NC
(alarm relay)
Connect to:
Normally closed burglar protection zones of the
control panel.
Details:
Upon alarm or power failure, the output relay's normally
closed contacts open.
Terminal:
TRB
(trouble output)
Connect to:
24-hour trouble zone, parallel to an E.O.L. resistor
(see Figure 5).
Details:
The TRB open collector output will be grounded upon
detector malfunction, causing disturbance in the trouble zone of
the associated alarm system.