INSTALLATION AND MAINTENANCE INSTRUCTIONS
I56-2294-004R
BEAM1224, BEAM1224S
Single-ended Reflected Type
Projected Beam Smoke Detector
SPECIfICATIONS
GENERAL
Range:
Sensitivity:
3825 Ohio Avenue, St. Charles, Illinois 60174
800/736-7672, FAX: 630/377-6495
www.systemsensor.com
Spacing:
Response Time:
Trouble Conditions:
Test/Reset Features:
Indicators:
16 to 230 Feet (5 to 70m); 230 to 328 Feet (70 to 100m) using optional accessory BEAMLRK
25% to 50% Total Obscuration in 6 levels
Level 1 = 25%
Level 2 = 30%
Level 3 = 40%
Level 4 = 50%
Level 5 = 30% to 50% (Acclimate)
Level 6 = 40% to 50% (Acclimate)
30 to 60 Feet (9.1 to 18.3m)
ALARM - 20 seconds typical; TROUBLE - 30 seconds typical
Beam Blockage (96% or More Obscuration)
Improper Initial Alignment
Self-compensation limit reached (service needed)
In Alignment mode
Integral Sensitivity Test Filter (BEAM1224S only)
Sensitivity Filter (Incremental scale on reflector)
Local Alarm Test Switch
Local Alarm Reset Switch
Remote Test and Reset Switch Capability (compatible with RTS451/RTS451KEY)
ALARM - Remote Output, Local LED (red)
TROUBLE - Remote Output, Local LED (yellow), Blink Pattern Indicates Trouble Diagnostics
NORMAL OPERATION - Local LED (flashing green once every 5 sec.)
ALIGNMENT AIDS - Optical Gunsight (coarse adjustment), 00 to 99 Digital Display (fine adjustment)
RELAYS - Alarm; Trouble
SENSITIVITY - Digital Display Readout in Percent Obscuration
ENVIRONMENTAL
Temperature:
Humidity:
MECHANICAL
Shipping Weight:
Shipping Size:
Mounting:
Wiring:
Adjustment Angle:
Paintable Trim Ring:
ELECTRICAL
Voltage:
Maximum Ripple Voltage:
Current (24 VDC):
–22°F to 131°F (–30°C to 55°C); NOTE: For applications below 32°F (0°C), see Special Applications on page 2
10% to 93% RH Non-condensing
Complete unit: 3.9 lbs. (1.77 kg)
15˝×10.5˝×6.5˝ (381mm × 267mm × 165mm)
Wall only without optional accessories
Plug-in Terminal Blocks (12 to 22AWG)
±10° Horizontal and Vertical
May be painted using enamel or acrylic type paints
Current (Test Mode, BEAM1224S only):
Relay Contacts:
Reset Time:
Start-up Time (after 2 min. reset):
Alarm Verification Time:
Remote Output (Alarm & Trouble):
10.2 to 32 VDC (BEAM1224); 15 to 32 VDC (BEAM1224S)
6.0 volts (Peak-to-peak); NOTE: ripple must not fall below minimum operating voltage specification
Avg. Standby -
17mA Max.
Avg. Alarm -
38.5mA Max.
Avg. Trouble -
8.5mA Max.
Avg. Alignment -
28mA Max.
Peak Test-
500mA Max.
0.5A at 30 VDC
0.3 Seconds Max.
60 sec. Max.
5 sec. Max.
VOLTAGE - 15 to 32 VDC; NOTE: Output voltage same as device input voltage
CURRENT - 15mA maximum; 6mA minimum; NOTE: Output current is limited by 2.2Kohm resistor
with UL-listed, separately supplied power (4-wire) control panels only. The
detector consists of a transmitter/receiver unit and a reflector. Smoke entering
the area between the transmitter/receiver and reflector causes a reduction in
signal. When the obscuration reaches alarm thresholds (chosen at the trans-
mitter/receiver unit), the detector generates an alarm signal. Complete block-
age of the beam causes a trouble signal. Slow changes in obscuration due to
a build up of dirt or dust on the lens of the detector are compensated for by
1
I56-2294-004R
BEfORE INSTALLINg
Please thoroughly read this manual and applicable sections of System Sensor’s
Projected Beam Detector Application Guide. Copies of this manual are avail-
able from System Sensor.
gENERAL DESCRIPTION
System Sensor Model BEAM1224/BEAM1224S is a long range projected beam
smoke detector designed to provide open area protection. It is to be used
D400-73-00
a microcontroller that continuously monitors the signal strength and periodi-
cally updates the alarm and trouble thresholds. When the self-compensation
circuit reaches its limit, the detector generates a trouble signal, indicating the
need for service.
Three LEDs on the detector indicate the current status: a red LED for alarm, a
yellow LED for trouble, and a blinking green LED for standby operation. The
alarm signal latches and can be reset by a momentary power interruption, by
using the remote reset input to the detector if using the remote test/reset sta-
tion model RTS451, or with the local reset button located on the detector. The
local reset button is accessible by removing the outer paintable trim ring. The
yellow LED will blink in specific patterns to provide a diagnostic aid when
diagnosing the cause of a trouble signal. It will also blink the amount of drift
compensation that has been used at the conclusion of the test. Trouble signals
automatically reset upon removing the cause of trouble. Red and yellow LEDs
can be remotely connected to the remote Alarm and Trouble outputs. These
outputs mimic the functions of the detector’s red and yellow LEDs. In addition
to these indicators, there is a dual digital display that reads 00 to 99. This dis-
play is used to indicate the signal strength of the beam in alignment mode and
to indicate the sensitivity setting of the detector in percent obscuration when
setting the sensitivity of the detector. No additional equipment is needed for
alignment of the beam.
Each detector contains one Form A (normally open) contact for alarm signals
and one Form B (normally closed) contact for trouble signals. The trouble
contact will open if power is removed from the detector. Thus, an additional
EOL power supervision relay is not necessary. The trouble contacts from all
the beam detectors on one initiating circuit must be connected after the last
indicating device on the loop. This prevents a single beam detector in trouble
from disabling other initiating devices on the same loop.
SPECIAL APPLICATIONS
Due to the inherent capabilities of projected type beam detectors they are often
installed in locations where spot-type detection is impractical. Projected type
beam smoke detectors are ideally suited for environmental conditions that
might include high ceilings, dusty and dirty environments, or environments
that experience temperature extremes. Often these conditions present special
problems for the installation of spot-type detectors and even greater problems
for their proper maintenance. Due to the inherent flexibility of mounting loca-
tions and large coverage area of projected type beam detectors often the condi-
tions above can be addressed or minimized.
Some examples of applications for beam detectors might include freezers, air-
craft hangars, cold storage warehouses, shipping warehouses, enclosed park-
ing facilities, sporting arenas and stadiums, concert halls, barns, or stables.
Some of these environments might be considered to hostile for spot-type
smoke detectors. If the environment is considered to be hostile then the colder
alarm threshold settings should be used.
Before installing the transmitter/receiver unit or reflector in these types of
applications special consideration should be given to ensure proper operation
of the beam detector. The beam detector should not be installed in environ-
ments where there is no temperature control and condensation or icing is
likely. Condensation or icing of the reflector surface or the outer surface of
the transmitter/receiver unit will obscure the light beam resulting in a false
alarm. If elevated humidity levels and rapidly changing temperatures can be
expected then condensation will likely form and the application should not be
considered acceptable for the beam detector. The beam detector should not be
installed in locations where the transmitter/receiver unit, the reflector, or the
optical pathway between them may be exposed to outdoor conditions such as
rain, snow, sleet, or fog. These 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 detectors 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 re-
flector 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 detectors and reflec-
tors 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 neces-
sary 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 compatible with the long-
range reflector kit (BEAMLRK).
BEAMSMK
The BEAMSMK allows System Sensor reflected beam detectors to be mounted
when surface wiring is used. This kit must be used when mounting the trans-
mitter/receiver unit with the multi-mount kit (BEAMMMK).
BEAMHK
The BEAMHK allows the transmitter/receiver unit to operate in environments
prone to the formation of condensation. Condensation forming on the beam
detector unit may result in trouble or false alarm conditions. BEAMHK will
lessen the likelihood of condensation by maintaining the unit at a temperature
that is slightly higher than the surrounding air. Please refer to the BEAMHK
installation manual for operation instructions.
BEAMHKR
The BEAMHKR allows the reflector to operate in environments prone to the
formation of condensation. Condensation forming on the reflector may result
in trouble or false alarm conditions. BEAMHKR will lessen the likelihood of
condensation by maintaining the reflector at a temperature that is slightly
higher than surrounding air. The kit requires a 24V power supply. When used
with the long-range reflector kit (BEAMLKR), it is necessary to purchase and
install four BEAMHKR kits. Please refer to the BEAMHKR installation manual
for operation instructions.
RTS451/KEY
The remote test accessory, RTS451/KEY 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Instruction Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Orange Sticky Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PARTS DIAgRAM (NOT TO SCALE):
TERMINAL BLOCK
PAINTABLE TRIM RING
C1049-00
DETECTOR PLACEMENT
This section of the manual discusses the placement of projected beam detec-
tors. 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, 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.
2
I56-2294-004R
D400-73-00
Projected beam detectors are usually located with their beams parallel to the
ceiling. However, they can be mounted vertically or at any angle to protect the
area involved. Since beam detectors sense the smoke buildup over a distance,
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 stratification. 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 maximum 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 side-
wall may be used as a guide. See Figure 1. The beam detector can be mounted
with the transmitter/receiver on one wall and the reflector on the opposite
wall, or both suspended from the ceiling, or any wall/ceiling combination.
In the case of the ceiling mount, the distance from the end walls should not
exceed one-quarter of the selected spacing (7.5 ft. [2.3m] maximum if the
spacing is 30 ft. [9.1m]). See Figure 2.
fIgURE 1. SPACINg fOR SMOOTh CEILINg (SIDE vIEw):
1 2
height, ceiling shape, surface and obstructions, ventilation, ambient environ-
ment, burning characteristics of the combustible materials present, and the
configuration of the contents in the area to be protected.
fIgURE 3. SLOPED CEILINg (ShED TyPE):
3F
(0.9M T.
)MAX
.
S
S
1
/
2
S M
REFLECTOR
AX.
Tx/Rx
C0256-00
fIgURE 4. SLOPED CEILINg (PEAkED TyPE):
MOUNT DETECTOR
ANYWHERE IN
THIS AREA
/ S
S
12 - 18 IN.
(0.3 - 0.46M)
REFLECTOR
Tx/Rx
1
/
2
S
WALL
S
3 FT.
(0.9
MAX. M)
S
1
/
2
S
C0254-00
fIgURE 2. SPACINg fOR SMOOTh CEILINg (TOP vIEw):
3 FT.
(0.9
MAX. M)
C0257-00
1 2
/ S MAXIMUM
REFLECTOR
Tx/Rx
1 4
/ S
MAX.
S
MOUNTINg LOCATIONS
Beam detectors require a stable mounting surface for proper operation. A sur-
face that moves, shifts, vibrates, or warps over time will cause false alarm or
trouble conditions. Initial selection of a proper mounting surface will elimi-
nate false alarms and nuisance trouble signals.
Mount the detector on a stable mounting surface, such as brick, concrete,
a sturdy load-bearing wall, support column, structural beam, or other sur-
face that is not expected to experience vibration or movement over time. DO
NOT MOUNT the beam detector on corrugated metal walls, sheet metal walls,
external building sheathing, external siding, suspended ceilings, steel web
trusses, rafters, nonstructural beam, joists, or other such surfaces.
C0255-00
Tx/Rx
REFLECTOR
16 FT. (5M) MINIMUM
328 FT. (100M) MAXIMUM
In the case of peaked or sloped ceilings, codes may specify spacing of detectors
by using horizontal spacing from the peak of the roof or ceiling. Figures 3 and
4 show the spacing for both the shed type and peaked type sloped ceilings.
On smooth ceilings, beam smoke detectors should generally be mounted be-
tween 12 and 18 inches (0.3 to 0.46m) from the ceiling. In many cases, how-
ever, the location and sensitivity of the detectors shall be the result of an
engineering evaluation that includes the following: structural features, size
and shape of the room and bays, occupancy and uses of the area, ceiling
D400-73-00
3
In cases where only one stable mounting surface as defined above can be
used, the transmitter/receiver unit should be mounted to the stable surface
and the reflector should be mounted to the less stable surface. The reflector has
a much greater tolerance for the unstable mounting locations defined above.
MOUNTINg INSTRUCTIONS
The transmitter/receiver unit may be mounted over a recessed junction box.
The cavity behind the detector is then used for routing of the wiring from the
junction box to the terminal blocks on the detector. The transmitter/receiver
unit should be mounted to the wall such that unit covers the recessed junc-
tion box in the wall completely. If the junction box is not recessed then you
I56-2294-004R
may use the surface mount kit (BEAMSMK). See the BEAMSMK installation
instructions for surface mounting instructions. The transmitter/receiver unit
can be mounted to the wall using the supplied drilling template (see Appendix
II). The detector base has 4 primary mounting keyholes, one in each corner of
the base. All four hole locations should be used to provide a secure mounting.
The outer housing of the beam detector is held to the base using four screws.
In order to mount the detector you must remove the outer housing first.
The reflector can be mounted to the wall using the supplied drilling template
see (Appendix III). The reflector has 4 mounting holes, one in each corner.
All four hole locations should be used to provide a secure mounting. The
reflector must be mounted such that it is within 10° in both the X and Y
planes of the transmitter/receiver unit. See Figure 5a. The reflector must also
be mounted such that plane of the reflector is perpendicular to the optical
line of sight to the transmitter/receiver unit. The maximum tolerance for non-
perpendicular mounting locations is 10°. See Figure 5b. If the reflector cannot
be mounted within 10° of the transmitter/receiver unit then the multi-mount
kit (BEAMMMK) may be used to provide greater angular adjustment of the
transmitter/receiver unit. If the perpendicular plane of the reflector cannot be
mounted within 10° of the optical line of sight then the multi-mount kit can be
used for the reflector. See BEAMMMK instructions.
To aid in locating the reflector in the alignment mirror at long distances a
bright orange sticky backed piece of paper is provided. Remove the protective
backing from the orange sticker. Temporarily affix the orange paper next to
the reflector using the sticky backing of the paper. The location of the sticky
paper is not critical. It may be placed anywhere near the reflector as long as it
not covering the reflective surface of the reflector. This sticky paper should be
removed once the installation is completed.
fIgURE 5A. REfLECTOR MOUNTINg gUIDELINES:
Light sources of extreme intensity such as sunlight and halogen lamps, if di-
rected at the receiver, can cause a dramatic signal change resulting in fault
and alarm signals. To prevent this problem direct sunlight into the transmitter/
receiver unit should be avoided. There should be a minimum of 10° between
the pathway of the light source and detector and the line of sight between
detector and reflector.
Operation of the detector through panes of glass should be avoided. Since
single ended beam detectors operate on a reflection principle, a pane of glass
perpendicular to the line of sight between the detector and the reflector can
reflect the light beam from the transmitter to the receiver. If this occurs, the
detector will not be able to distinguish these reflections from those of the re-
flector and the protected space will be compromised.
Panes of glass will also absorb some of the light as it passes through it. This
absorption of light will reduce the acceptable installed distance between the
detector and the reflector.
In cases where operation through panes of glass cannot be avoided some spe-
cific installation practices can help to minimize the effects of the glass. These
practices include: avoid penetration of multiple panes of glass, position the
glass so that it is not perpendicular to the line of sight between the detector
and the reflector, (A minimum of 10° off perpendicular should be considered),
and make certain that the glass is smooth, clear and mounted securely. The
complete reflector blockage test can be used to determine if the installation is
acceptable. See Testing and Maintenance Section of this manual.
Where high ceilings (in excess of 30 feet or 9.1 meters) are present additional
beams may be required to detect smoke at lower levels. See System Sensor’s
Projected Beam Detector Applications Guide for further explanation.
wIRINg INSTALLATION gUIDELINES
Always install all wiring in compliance with the National Electrical Code, and/
or the applicable local codes, and any special requirements of the local au-
thority having jurisdiction. Proper wire gauges and suitable means for strain
relief should be used. The conductors used to connect beam smoke detectors
to control panels and accessory devices should be color-coded to reduce the
likelihood of wiring errors. Improper connections can prevent a system from
responding properly in the event of a fire.
L
WA
L
10
10
RE
E
FL
OR
CT
Installation wire used for the beam detector shall be no smaller than 22 AWG
(1.0 mm2). For best system performance, all wiring should be twisted pair and
installed in separate grounded conduit. Do NOT mix fire system wiring in the
same conduit as any other electrical wiring. Shielded cable may be used to
provide additional protection against electrical interference.
When installing the beam smoke detector in applications where the head
unit will be mounted to either a wall or the ceiling using the multi-mount kit
(BEAMMMK) flexible conduit will be used. The surface mount kit (BEAMSMK)
and multi-mount kit (BEAMMMK) must be installed with the cable before
wring the unit, according to the instructions supplied with the kit.
When the detector has been mounted over a recessed junction box, all wiring
should be routed out of the box and behind the detector to the bottom of the
detector where the terminal blocks are located. When installing the wiring
in the junction box be sure to leave enough wire in the box to connect to the
terminal blocks. (Approximately 9˝ [23cm) of wire outside of the junction box
will be required for proper installation). All wiring to the detector is done via
pluggable terminal blocks. In order to properly make electrical connections
strip approximately
1
/
4
˝ (6mm) of insulation from the end of the wire, sliding
the bare end of the wire under the clamping plate screw.
Figure 7 shows all the wiring connections to the transmitter/receiver unit.
Figure 6 shows the proper wiring diagram for either class A or class B opera-
tion. Figure 8 shows the connections that are necessary when using one of
the optional remote test stations (RTS451 or RTS451KEY). Figure 9 shows the
remote outputs for trouble and alarm.
ACCEPTABLE MOUNTING
LOCATIONS FOR REFLECTOR
C0258-00
fIgURE 5B. REfLECTOR MOUNTINg gUIDELINES
10 MAXIMUM
OPTICAL LINE OF SIGHT
REFLECTOR
C0259-00
MOUNTINg CONSIDERATIONS fOR SINgLE ENDED BEAM DETECTORS:
There must be a permanent clear line of vision between the detector and the
reflector. Reflective objects must not be near the line of vision between the
detector and reflector. Reflective objects too near to the line of sight can reflect
the light beam from the transmitter to the receiver. If this occurs, the detector
will not be able to distinguish these reflections from those of the reflector and
the protected space will be compromised. Reflective objects should be a mini-
mum of 15 inches (38.1cm) from the line of sight between the detector and
reflector. In cases where reflective objects cannot be avoided, the complete re-
flector blockage test can be used to determine if the installation is acceptable.
See Testing and Maintenance Section of this manual.
D400-73-00
4
I56-2294-004R
fIgURE 6. wIRINg DIAgRAM:
LISTED PANEL
POWER +
POWER –
INITIATING +
T1-1
T1-2
T4-2
POWER IN (+) POWER OUT (+)
POWER IN (–) POWER OUT (–)
ALARM COM
ALARM COM
BEAM1224
T1-3
T1-4
T4-4
T1-1
T1-2
T4-2
POWER IN (+) POWER OUT (+)
POWER IN (–) POWER OUT (–)
ALARM COM
ALARM COM
BEAM1224
T1-3
T1-4
T4-4
INITIATING –
T4-1
ALARM NO
ALARM NO
T4-3
T4-1
ALARM NO
ALARM NO
T4-3
T3-2
TROUBLE
COM
T2-2 AUX (–)
T2-1 REMOTE ALARM OUTPUT
T3-3 REMOTE TROUBLE OUTPUT
T2-3 TEST INPUT
T2-4 RESET INPUT
TROUBLE
NC
T3-1
T3-2
TROUBLE
COM
T2-2 AUX (–)
T2-1 REMOTE ALARM OUTPUT
T3-3 REMOTE TROUBLE OUTPUT
T2-3 TEST INPUT
T2-4 RESET INPUT
TROUBLE
NC
T3-1
LISTED EOL
POWER
SUPERVISION
MODULE
(ONLY REQUIRED
IF OTHER
SENSORS ARE IN
THE SAME LOOP)
EOL RESIS-
TOR
CLASS A
RETURN
LOOP
C0272-00
fIgURE 7. wIRINg CONNECTIONS AT DETECTOR:
fIgURE 8. wIRINg DIAgRAM (RTS451):
PIN 1
PIN 2
PIN 4
PIN 3
PIN 5
RTS451/KEY
T2-1 REMOTE ALARM OUT
T2-2 AUX (–)
T2-4 RESET INPUT
T2-3 TEST INPUT
BEAM1224
SEE RTS451/KEY INSTALLATION
INSTRUCTIONS FOR ELECTRICAL
RATINGS OF RTS451/KEY.
C0273-00
fIgURE 9. wIRINg DIAgRAM (REMOTE LEDS):
BEAM1224/S
ALARM
SIGNAL
CIRCUIT
(NOTE 1)
T2-1
TROUBLE
SIGNAL
CIRCUIT
(NOTE 1)
T3
T2
T1
T4
T3-3
T2-2
RESET I NPUT
TEST INPUT
AUX (–)
REMOTE ALARM OUT
POWER OUT (–)
POWER OUT (+)
POWER IN (–)
POWER IN (+)
ALARM COM
ALARM N.O.
ALARM COM
ALARM N.O.
Not used
REMOTE TROUBLE OUT
TROUBLE COM
TROUBLE N.C.
YELLOW
RED
NOTE 1: SEE ELECTRICAL RATINGS SECTION OF THIS
MANUAL FOR CIRCUIT OUTPUT RATINGS.
C0319-01
INSTALLATION/ALIgNMENT
Reference Figures 10 through 14 for installation, alignment, and maintenance.
The alignment of the BEAM1224/BEAM1224S is divided into four steps: coarse
alignment, fine adjustment, final gain adjustment, and final verification. It is
necessary for all four steps to be executed properly to ensure proper alignment
of the product. If the detector and reflector are mounted per Mounting Loca-
tions and Mounting Instructions sections of this manual and the alignment
procedures are executed properly, false alarms and nuisance trouble signals
will be minimized.
5
I56-2294-004R
C0271-00
WARNING: Disable the zone or system before applying power to the beam
detector to prevent unwanted alarms. When applying power to the beam de-
tector before the alignment procedure has been completed the detector may
enter alarm or trouble.
D400-73-00
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