P
RODUCT
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ATA
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HEET
NSW
18-20 Brookhollow Ave
NORWEST 2153
02 8850 2888
VIC
Unit 4, 297 Ingles St
PORT MELBOURNE 3207
03 9646 4557
QLD
Unit 2, 225 Queensport Rd North
MURARRIE 4172
07 3890 8842
www.
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SS-BEAM1224
Conventional Beam Detector
Installation Guide
Sensitivity Selection
The detector has six sensitivity selections. Each of these selections is only acceptable over a specific distance
separation between the detector and the reflector per UL268. The chart below is used to determine which
selections are acceptable for your installed distance. The sensitivity of the detector can be set only when the
housing is removed and the detector is not in the fine adjustment step of the alignment mode, indicated by the
illumination of the dual digital display. To set the sensitivity depress the sensitivity button one time (see Figure
1). Once the switch is pressed the digital display will illuminate and read the current sensitivity setting in percent
obscuration. To change the sensitivity continue to depress the sensitivity switch until the desired setting is achieved.
The digital display will turn off automatically if no further switch presses occur.
In addition to the four standard sensitivity selections the detector has two Acclimate settings. When either of
these settings is chosen the detector will automatically adjust its sensitivity using advanced software algorithms to
select the optimum sensitivity for the environment. The sensitivity will be continuously adjusted within the ranges
specified in the chart below.
Sensitivity Setting Percent Obscuration Display Reading
Acceptable Distance
Between Detector &
Reflector (Feet)
Acceptable Distance
Between Detector &
Reflector (Meters)
Level 1
25
25
16.4 - 120
5.0 - 36.6
Level 2
30
30
25 - 150
7.6 - 45.7
Level 3
40
40
60 - 220
18.3 - 67
Level 4
50
50
80 - 328
24.4 - 100
Acclimate Level 1
30-50
A1
80 - 150
24.4 - 45.7
Acclimate Level 2
40-50
A2
80 - 220
24.4 - 67
Sensitivity
Total obscuration can be converted to percent per foot,
assuming uniform smoke density for the entire length of the
beam. The chart on the right converts total obscuration to
percent per foot for all acceptable sensitivity settings.
Sensitivity Testing
Detectors must be tested after installation and following periodic maintenance. The sensitivity of the BEAM1224/
BEAM1224S may be tested with a calibrated Test Filter (Reflector Test Card) or the local test switch on the
transmitter/receiver unit.
Note:
Before testing, notify the proper authorities that the smoke detector system is undergoing maintenance, and
therefore the system will be temporarily out of service. Disable the zone or system undergoing maintenance to
prevent unwanted alarms.
Note:
Before testing the detector, check for the presence of the flashing green LED at the receiver, making sure not
to disturb or block the beam. If it does not flash and the detector is not in trouble or alarm, power has been lost to
the detector (check the wiring).
