8
Figure 4
Figure 5
4.3.
Mounting the Detector
4.3.1.
The units of the detector should be attached to the building structures generally with the help of
mounting kits supplied:
Kit No.1: Designed to attach the transceiver unit and to fasten the housing additionally (if
necessary) on completing commissioning.
Kit No.2: Designed for attaching an S-Type (small) reflector or a remote indicator and control unit.
Kit No.3: For an XS-Type (extra small) reflector.
Kit No.4: For an L-Type (large) reflector.
In specific situations (for example, when the detector components can be fastened only by means of
threaded joints) another fixture elements can be used. Anyway, it is necessary to provide reliable
fastening without gaps, drifting, and any motion of the detector’s elements while in operation.
4.3.2.
Wires can be run either in surface way or recessed. For flush wiring wires shall be lied down by
first and then the transceiver unit or remote indicator and control unit can be mounted. For surface
wiring installation order doesn’t matter.
4.3.3.
Figure 6 shows the view of the transceiver unit with removed housing and open access to the
communication zone. Wires should be passed through the side holes in the base located above the side
notches in the mounting base. To provide optimal wiring location of the relevant terminal groups
should be taken into account.
4.3.4.
While mounting the detectors into fire alarm systems please use wires and cables which meet
the requirements of the operation documentation for the polling loop controller.
4.3.5.
The length of the cable connecting the transceiver unit with the remote indicator and control
unit should be minimized and not exceed 30 meters.
4.3.6.
In the presence of regular high-power electromagnetic radiation in the premises covered by the
detectors the polling loops and other connecting wires shall be protected against electromagnetic
interference (by using twisted pair wiring, protective shielding, etc.).
WARNING: If the EMI level in the protected premises exceeds the one required by the detector
specifications represented in Table 1 then correct performance of the detectors cannot be
guaranteed.
4.3.7.
The terminal blocks of the detector enable connecting wires with cross-section area 0.2 to 1.5
sq. mm (wire diameter 0.5 to 1.3 mm). If wires of 0.8 mm diameter or less are used then their ends
shall be looped.
4.3.8.
The housing of the transceiver unit can be removed if only there are no locking screws in the
latches at the top and the bottom of the housing. To remove the housing, release both the latches
pressing on them and pull the housing at right angle to the lens.
