conditions will impair the proper operation of the detector
and must be avoided.
Approved Accessories
The following accessories can be purchased separately for
use with this beam detector.
BEAMLRK
The BEAMLRK allows System Sensor reflected beam detec-
tors to be installed at separations between 230 and 328 feet
(70 to 100 meters). At these distances, four 8″×8″ reflectors
must be used to provide enough reflected infrared light.
This kit includes 3 additional reflectors with new test
scale legends. The reflector included with the transmitter/
receiver unit is the fourth reflector to be used. This kit is
not compatible with the multi-mount kit (BEAMMMK).
BEAMMMK
The BEAMMMK allows System Sensor reflected beam detec-
tors and reflectors to be mounted to either a vertical wall or
the ceiling. The kit allows for additional alignment range in
cases where the detector and reflector cannot be mounted
within 10° of each other. The kit includes the hardware
necessary to mount either a single transmitter/receiver unit
or a single reflector. (To mount the transmitter/receiver the
surface mount kit, BEAMSMK, must also be used). If the
transmitter/receiver and the reflector require additional
alignment range two kits are required. The kit is not com-
patible with the long-range reflector kit (BEAMLRK).
BEAMSMK
The BEAMSMK allows System Sensor reflected beam detec-
tors to be mounted when surface wiring is used. This kit
must be used when mounting the transmitter/receiver unit
with the multi-mount kit (BEAMMMK).
RTS451/KEYA
The remote test accessory, RTS451/KEYA allows for the beam
detector to be tested remotely. The test accessory provides test
and reset functions and green and red LED’s that mimic the
LED’s on the detector.
Parts List
Description
Quantity
Transmitter/Receiver Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Paintable Trim Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Plug-in Terminal Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Isolator Shunts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Instruction Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Orange Sticky Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Parts Diagram (not to scale)
C0306-00
Detector Placement
This section of the manual discusses the placement of projected
beam detectors. Though this information is based upon industry
expertise, it is intended to be used only as a technical guide.
Always comply with the requirements of applicable codes and
standards such as,ULC S524, NFPA 72, National Fire Alarm
Code, as well as directives of the Authority Having Jurisdiction
(AHJ). For general information on the placement of detectors,
read System Sensor’s Projected Beam Detector Application
Guide.
Projected beam detectors are usually located with their
beams parallel to the ceiling. However, they can be mount-
ed vertically or at any angle to protect the area involved.
Since beam detectors sense the smoke buildup over a dis-
tance, they are ideal for locations with high ceilings. They
can also be mounted on a wall or ceiling below the level
of a spot type detector, reducing the effects of air stratifica-
tion. Some typical locations would include large areas with
high ceilings such as atriums, warehouses, and factories.
NOTE: Projected beam smoke detectors should always
be mounted to stable mounting surfaces. See the
MOUNTING LOCATION section for details.
Some fire codes specify spacing on a given center-to-center
distance between detectors under ideal conditions. This
spacing is based on rooms with smooth ceilings and no
physical obstructions between the contents being protected
and the detectors. Moreover, they are also based on a maxi-
mum ceiling height, and on the assumption that the value
and the combustible nature of the contents of the room
being protected do not warrant greater protection or closer
spacing.
In a room with a smooth ceiling, detectors should be
spaced between 30 and 60 feet (9.1 to 18.3m). One-half
that spacing between the beam and the sidewall may be
used as a guide. See Figure 1. The beam detector can be
D400-74-00
3
I56-2542-00R
Terminal Block
Paintable
Trim Ring
Isolator Shunt
