INSTALLATION/WIRING INSTRUCTIONS
CERBERUS PYROTRONICS
MODELS SA-3I AND SA-11P
AIR DUCT DETECTORS
INTRODUCTION
CERBERUS PYROTRONICS
Model SA-3I and SA-11P detectors are self-contained
air duct detectors designed for installation in heating, ventilating, and air conditioning duct
systems. These Detector Models SA-3I and SA-11P can use ionization or photoelectric
smoke detectors to signal the presence of combustion products in a duct system. (Refer to
TECHNICAL DATA
for information on compatible detectors.)
In addition to the self-contained detection features of the SA-3I and SA-11P, these air duct
detectors also can power and supervise the following configurations.
(1) two air duct detectors (Model AD-3I or AD-11P) mounted on the exterior of the duct and
employing sampling tubes to monitor the air in the duct,
or
(2) two spot detectors (Model PE-11) mounted on the interior wall of the air duct,
or
(3) one each of the detectors listed in (1) and (2) above.
TECHNICAL DATA
Smoke Detector Compatibility: SA-3I - Use Model DI-B3 or DI-B3H only
SA-11P - Use Model PE-11
AD-3I (Satellite) - Use Model DI-B3 or DI-B3H only
AD-11P (Satellite) - Use Model PE-11
Operation Voltage and Current: 120 VAC (50/60 Hz), .32A max
Alarm Relay:
DPDT contacts, rated at 125 VAC/24 VDC, 3A Resistive
Trouble Relay:
SPDT contacts, rated at 125 VAC/24 VDC, 2A Resistive
Smoke Detector Sensitivity:
Factory set for air duct applicationSee detector
nameplate label
Alarm Indicator:
LED on smoke detector displays steady or flashing red
light through air duct cover
Temperature Range:
32
O
F (0
O
C) to 100
O
F (37.8
O
C) per UL 268/268A
Altitude Range:
SA-3I, using DI-B3 - Altitude range is 0 to 4000 feet
above sea level
SA-3I, using DI-B3H - Altitude range is 3000 to 8000 feet
above sea level
SA-11P, using PE-11 - No altitude limitations; detectors
unaffected by altitude
Relative Humidity Range
0 to 93% (non-condensating) RH per UL 268/268A
Air Duct Velocity Range:
SA-3I:
500 to 4000 ft/min
SA-11P: 300 to 4000 ft/min
Sampling Tube Pressure
SA-3I:
0.017 to 1.07 inches of water
Differential Range:
SA-11P: 0.006 to 1.07 inches of water
CAUTION:
These air duct detectors are designed for detection of products of combus-
tion in a duct system. They are not to be used for open area protection.
P/N 315-096274-2
Cerberus Division
Siemens Building Technologies, Inc.
8 Fernwood Road
Florham Park, New Jersey 07932
Siemens Building Technologies, Ltd.
50 East Pearce Street
Richmond Hill, Ontario L4B 1B7 CN
