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Model SS4-A/-A2 Multi-Spectrum Digital Electro-Optical Fire Detector
Installation Guide and Operating Manual
MAN0931_V3_1510-001_RevH_06-13
The Model SS4-A/-A2 Optical Fire Detectors have been manufactured in compliance with the requirements
of the ISO-9002 standard and have received:
•
Factory Mutual (FM) for the United States
•
CSA for Canada
1.1
Features and Specifications
1.1.1
General Description
The Model SS4-A/-A2 Optical Fire/Flame Detectors are fast reacting (within 5 seconds), digital,
configurable, computerized, "smart" units. This Detector has sensitivity to Type A, B, and C flaming fires.
Detectors of this design process Ultraviolet (UV), Wide band Infrared (IR), and Visible (VIS) spectral
ranges from ruggedized Solar-blind UV, "Quantum-Effect" IR, and visible sensors correspondingly. They
are equipped with SRL-BIT (Built-In-Test) for optical "through the lens" of both the sensors and lens. The
Model SS4-A/-A2 UV, IR, and VIS Fire Detectors have false alarm immunity, and adjustable alarm range
between 15 and 60 ft. for a one square foot gasoline pan fire, with a 120-degree (± 60 degrees from the
axis) conical field of view. Their microprocessor-based algorithms (FirePic, SnapShot, and Tri-Mode
Plot) assure time programmable alarm verification, Fire Signature Analysis, and compatibility with
standard approved fire alarm panels.
The Detector also has the flexibility to be re-configured in the field. Its installation is simple, and operation
straightforward due to the built-in self-testing feature. Therefore, the maintenance consists mainly in
keeping the Detector window lens clean and performing periodic testing required by the manufacturer of
the Fire Control and Suppression System.
Detector Technical Specifications
1.2.1
Mechanical Specifications
Enclosure Material:
Physical Dimensions:
Center
Weight:
Enclosure Rating:
Vibration:
1.2.2
Electrical Specifications
Input Voltage Range:
Normal Operation Current:
Maximum Fire Alarm Current:
Relay Contact Rating:
Analog Current Output:
(
400 Ohms Max Load
Screw Terminal Wire Sizes:
APPROVALS
SECTION 1
TECHNICAL DESCRIPTION
Copper Free Aluminum
316 Stainless Steel
Assembly 4.35 in. (
Mounting Holes ¼ in. (
Conduit Entries Two (2) ¾ in. NPT or Two (2) 25 mm
Aluminum 3 lbs. 11 oz. (
Stainless Steel 7 lbs. 7 oz. (
IP66 / NEMA 4 / NEMA 4X
Meets or exceeds Mil Spec 810C,
Method 514.2, Curve AW
18 VDC to 32 VDC
60 mA (
85 mA (
1 Amp @ 24 VDC resistive
0 to 20 mA (
)
0.0 mA (
2.0 mA (
4.0 mA (
20.0 mA (
12 AWG to 22 AWG (
Use stranded conductors (
) Height X 4.81 in. (
110.49 mm
) Diameter, 5.50 in. (
6.35 mm
) approximately
1.7 kg
) approximately
3.4 kg
)
205 mA (
nominal
)
235 mA (
maximum
Source or Sink, User Selectable
) = Fault
<0.6 mA
) = Dirty Window Lens
±0.6 mA
) = Normal, Safe (
±0.6 mA
) = Verified Fire Alarm
±0.6 mA
2.50 mm to 0.762 mm
n ot
U
U
) Diameter
122.24 mm
) Center to
139.70 mm
1
)
nominal with heater
P
P
1
)
maximum with heater
P
P
)
)
no Fault, no Fire
)
)
solid core
1
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