Technical Bulletin
SuperDuct Conventional Two-Wire Duct Smoke Detector
3
See
Detail A
Exhaust tube
Plug
Sampling tube
(ordered separately)
Intake
gasket
Detector housing
and electronics
Exhaust gasket
Coupling
Detector cover
Detail A
1/2-in conduit couplings
(supplied by installer)
Conduit support
plate
Conduit nuts
(supplied by installer)
Figure 2: Duct smoke detector exploded view
Specifications
Dimensions: 8.70 x 5.45 x 1.90 inches
Wire size: 14 to 22 AWG
Smoke detection method: Photoelectric (light scattering
principle)
Air velocity rating: 100 to 4,000 ft/min
Air pressure differential: 0.005 to 1.00 inches of water
Sensitivity: 0.79 to 2.46 %/ft obscuration
Reset time: 1 second, max.
Power up time: 30 seconds, max.
Alarm test response time: 5 seconds
LED indicators: Alarm (red), Trouble (yellow), Dirty (yellow)
Zone alarm relay
Unsupervised and power-limited
Quantity: 1
Type: Form C
Ratings: 2.0 A at 30 Vdc (resistive)
Detector operating voltage: 16 to 30 Vdc
Detector operating current
Startup: 200 µA
Standby: 70 µA
Alarm: 5 to 100 mA
Alarm impedance: 50 to 750
Ω
Accessory operating voltage: 3.3 Vdc, minimum
Accessory operating current: 1.5 mA, minimum
Operating environment
Temperature (UL): -29 to 70
°
C (-20 to 158
°
F)
Temperature (ULC): -29 to 49
°
C (-20 to 120.2
°
F)
Humidity (UL and ULC): 93% RH, noncondensing
Compatibility ID
0.0: IDC short circuit current
≤
100 mA
1.0: IDC short circuit current > 100 mA
Note:
Refer to the fire alarm control panel’s documentation
for system compatibility details.
Accessories
The accessories that you can use with the duct smoke detector
are listed below.
Model Description
SD-T8
8-inch sampling tube
SD-T18
18-inch sampling tube
SD-T24
24-inch sampling tube
SD-T36
36-inch sampling tube
SD-T42
42-inch sampling tube
SD-T60
60-inch sampling tube
SD-T78
78-inch sampling tube
SD-T120
120-inch sampling tube
SD-TRM
Remote test-reset station, magnetic
SD-TRK
Remote test-reset station, keyed
