Model SS4-AUV/-AUV2 Ultraviolet (UV) Digital Electro-Optical Fire Detector
Installation Guide and Operating Manual
MAN0927_V3_1510-005_Rev H_06-13
1
APPROVALS
The Model SS4-AUV/-AUV2 Ultraviolet Fire Detectors have been manufactured in compliance with the
requirements of the ISO-9002 standard and have been approved by:
•
Factory Mutual (FM) for the United States
•
CSA for Canada
SECTION 1
TECHNICAL DESCRIPTION
1.1
Features and Specifications
1.1.1
General Description
The Model SS4-AUV/-AUV2 Ultraviolet Fire/Flame Detectors are fast-reacting (within 5 seconds), digital,
configurable, computerized, “smart” units. They are capable of solar-blind flame detection in the ultra-violet
spectral range (185 to 260 nanometers) utilizing long-life twin ruggederized UV sensors. They are
equipped with SRL-BIT (Built In Test) for optical “through the lens” of both the sensors and lens. The
Model SS4-AUV/-AUV2 Ultraviolet Fire Detector has sensitivity to Type A, B, and C flaming fires, false
alarm immunity, and an alarm range between 15 and 60 ft. to 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. The SS4-AUV/ SS4-AUV2 are UV only detectors and are for
indoor applications where UV noise sources, such as welding, are not present.
1.1.2
Detector Technical Specifications
1.1.2.1
Mechanical Specifications
Enclosure Material:
Copper Free Aluminum
316 Stainless Steel
Physical Dimensions:
Assembly 4.35 in. (
110.49 mm
) Height X 4.81 in. (
122.24 mm
) Diameter
Mounting Holes ¼ in. (
6.35 mm
) Diameter, 5.50 in. (
139.70 mm
) Center to
Center
Conduit Entries Two (2) ¾ in. NPT or Two (2) 25 mm
Weight:
Aluminum 3 lbs. 11 oz. (
1.7 kg
) approximately
Stainless Steel 7 lbs. 7 oz. (
3.4 kg
) approximately
Enclosure Rating:
IP66 / NEMA 4X
Vibration:
Meets or exceeds Mil Spec 810C,
Method 514.2, Curve AW
1.1.2.2
Electrical Specifications
Input Voltage Range:
18 VDC to 32 VDC
Normal Operation Current:
60 mA (
nominal
)
205 mA (
nominal with heater
P
1
P
)
Maximum Fire Alarm Current:
85 mA (
maximum
)
235 mA (
maximum with heater
P
1
P
)
Relay Contact Rating:
1 Amp @ 24 VDC resistive
Analog Current Output:
0 to 20 mA (
Source or Sink, User Selectable
)
(
400 Ohms Max Load
)
0.0 mA (
<0.6 mA
) = Fault
2.0 mA (
±0.6 mA
) = Dirty Window Lens
4.0 mA (
±0.6 mA
) = Normal, Safe (
no Fault, no Fire
)
20.0 mA (
±0.6 mA
) = Verified Fire Alarm
Screw Terminal Wire Sizes:
12 AWG to 22 AWG (
2.50 mm to 0.762 mm
)
Use stranded conductors (
U
not
U
solid core
)
