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MAN0889_Issue 3_03/13
3. Installation and Operation
(1) Stick the supplied self-adhesive mounting plate cut-out template onto the duct wall in the position chosen
for the Transmitter and Receiver unit.
Note:
The intersection of the bold lines on the template (point X) corresponds with the centre of the unit's
infrared beam.
(2) At this stage it is advisable to mark the corresponding position for the Reflector Panel on the opposite
side of the duct. Stick the Reflector Panel cut-out template to the outside of the duct wall opposite the
Transmitter and Receiver.
Ensure that point X* on the Reflector Panel template is directly opposite point X on the mounting plate
template.
(3) Drill 10 mounting holes (diameter 7mm) in the positions marked G on the Transmitter and Receiver unit
template.
(4) Cut a rectangular aperture in the duct wall.
Follow outline H.
(5) Check that the path from the aperture to the opposite wall of the duct is clear and unobstructed.
(6) Measure the distance (in metres) across the duct.
Record this distance as it is required later during commissioning.
(7) Insert the two mounting plate support bars through the aperture and attach them to the inside of the duct,
using an M6 nut and washer screwed onto the stud in each support bar.
Check that the threaded holes in the support bars line up with the holes drilled in the duct.
(8) Attach the mounting plate, Transmitter and Receiver unit and junction box assembly.
Use M6 x 20 cap head screws and washers for the mounting plate.
(9) Run the Transmitter and Receiver conduits into the junction box cable entries. (see 3.5.3 (2)).
3.5.2.2 Heated Reflector Panel
(1) If not already in place, stick the Reflector Panel cut-out template to the outside of the duct wall opposite
the Transmitter and Receiver.
Ensure that point X* is directly opposite point X on the mounting plate template. This ensures that the
beam from the Transmitter hits the centre of the reflector.
(2) Drill six mounting holes (7mm diameter) in the positions marked J on the template.
(3) Following outline K, cut a square aperture in the duct wall.
(4) Insert the two Reflector Panel support bars through the aperture and attach them to the inside of the duct,
using an M6 nut and washer screwed onto the stud in each support bar.
Check that the threaded holes in the support bars line up with the holes drilled in the duct.
(5) Fit four M6 x 20 cap head screws into the holes in the support strips leaving approximately 5mm of thread
exposed on the outside of the duct.
(6) Slot the retro-reflector assembly over the heads of the screws and allow its weight to be supported on
the exposed sections of thread.
(7) Tighten the four screws to clamp the retro-reflector assembly in position.
Searchline Excel Cross-Duct Technical Handbook
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