BD-SS and BDT-SS CS-2516 09/01/06
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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 Acclimate™ setting is chosen, the detec-
tor will automatically adjust its sensitivity using advanced software algo-
rithms to select the optimum sensitivity for the environment. The sensitiv-
ity will be continuously adjusted within the ranges specified in the chart
above.
Total obscuration can be converted to percent per foot, assuming uniform
smoke density for the entire length of the beam. The chart below converts
total obscuration percent per foot for all acceptable sensitivity settings.
Specifications
Operational Specifications
Protection range
16 to 230 feet (5 to 70 m), 230 to 328
feet (70 to 100 m) using optional
BEAMLRK kit.
Adjustment angle
±10° horizontal and vertical. Note that
the optics move independently of the unit.
Sensitivity (6 levels)
• Level 1 — 25%.
• Level 2 — 30%.
• Level 3 — 40%.
• Level 4 — 50%.
• Acclimate™ Level 5 — 30% to 50%.
• Acclimate™ Level 6 — 40% to 50%.
Fault condition (trouble)
• 96% or more obscuration blockage.
• In alignment mode.
• Improper initial alignment.
• Self-compensation limit reached.
Alignment aid
• Optical gunsight.
• Integral signal strength indication.
• Two-digit display.
Indicators
• Alarm — local red LED and remote alarm.
• Trouble — local yellow LED and remote
trouble.
• Normal — local flashing green LED.
Test/reset features
• Integral sensitivity test filter (BDT-SS
only, requires external power supply).
• Sensitivity filter (incremental scale on
reflector).
• Local alarm test switch.
• Local alarm reset switch.
• Remote test and reset switch (compatible
with RTS451 and RTS451KEY test
stations).
Smoke detector spacing
On smooth ceilings, 30 – 60 feet (9.1 to
18.3 m) between projected beams and
not more than one-half that spacing
between a projected beam and a sidewall.
Other spacing may be used depending on
ceiling height, airflow characteristics, and
response requirements. See NFPA 72.
Sensitivity
Setting
Percent
Obscuration
Display
Reading
Acceptable
D
ISTANCE
between
detector and
reflector (ft)
Acceptable
D
ISTANCE
between
detector and
reflector (m)
Level 1
25%
25
16.4 to 120
5.0 to 36.6
Level 2
30%
30
25 to 150
7.6 to 45.7
Level 3
40%
40
60 to 220
18.3 to 67
Level 4
50%
50
80 to 328
24.4 to 100
Acclimate™ Level 1
30% to 50%
A1
80 to 150
24.4 to 45.7
Acclimate™ Level 2
40% to 50%
A2
80 to 220
24.4 to 67
6985sens.tbl
Reflector Mounting Guidelines
6985mt2.wmf
6985mt1.wmf
