BD-SS and BDT-SS CS-2516 09/01/06
Page 1 of 4
Description
The Gamewell BD-SS and BDT-SS
are intelligent, addressable pro-
jected beam smoke detectors with
SmartScan™ protocol. They are
uniquely suited for protecting open
areas with high and sloping ceilings,
and wide-open areas, where spot-
type smoke detectors are difficult to
install and maintain. Ideal applica-
tions are atriums, cathedral ceil-
ings, aircraft hangers, warehouses,
sporting arenas, concert halls, and
enclosed parking facilities. Installa-
tion of the single-ended reflective
design is much quicker than a dual-
ended projected beam detector.
Alignment is easily accomplished
with an optical sight and a two-digit
signal strength meter incorporated
into the beam detector. Listed for operation from –22°F to 131°F, the BD-SS
and BDT-SS are usable in open area applications where temperature
extremes exceed the design limits of other types of smoke detection.
The BD-SS and BDT-SS are a transmitter/receiver unit and a reflector.
When smoke enters the area between the unit and the reflector it causes a
reduction in the signal strength. When the smoke level (signal strength)
reaches the predetermined threshold, an alarm is activated. The detectors
have four standard sensitivity selections as well as two Acclimate™ set-
tings. When either Acclimate™ setting is selected, the detector’s advanced
software algorithms automatically adjust to the optimum sensitivity for the
specific environment. The protection range is 16 to 328 feet and there are
built-in isolators for Style 7 operation.
The BDT-SS has an integral sensitivity test feature of a filter attached to a
servomotor inside the detector optics. Activation of the RTS451 remote test
station moves the filter into the pathway of the light beam, testing the
detector’s sensitivity. This sensitivity test feature allows the user to quickly
and easily meet the annual maintenance and test requirements of NFPA
72, without physical access to the detector.
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 UL 268. The chart below determines 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 Switch Locations diagram. Once the switch is pressed, the
Features
• Transmitter/receiver built into same unit.
• Six user-selectable sensitivity levels.
• 16' to 328' (use BEAMLRK beyond 230')
protection range.
• Removable plug-in terminal blocks.
• Digital display — no special tools
required.
• Built-in automatic gain control compen-
sates for signal deterioration from dust
buildup.
• Optional remote test station.
• Optional long-range kit (BEAMLRK) for
applications in excess of 230' (70 m).
• Optional multi-mount kit (BEAMMMK)
providing ceiling or wall mount capability
with increased angular adjustment.
• Optional heater kits (BEAMHK and
BEAMHKR) for prevention of condensa-
tion (not intended to increase or reduce
the specified operating temperature).ing
service.
Listings
Listings and approvals below apply to the
basic BD-SS and BDT-SS beam smoke
detectors. In some cases, certain modules
may not be listed by certain approval
agencies, or listing may be in process.
Consult factory for latest listing status.
• UL Listed: file S1195.
• FM approved.
• MEA approved: file 269-04-E.
• CSFM approved: file 7260-1288:171.
BD-SS and BDT-SS
Single-Ended, Reflected-Type, Addressable
Beam Smoke Detector with Smart
Scan™
BD-SS with reflective plate (top);
and with BEAMMMK
