United Technologies Edwards Signature SIGA-OSHD Assembly instructions

© 2019 United Technologies Corporation 1 / 2 P/N 3102597-EN • REV 001 • ISS 07MAR19
SIGA-OSHD Intelligent
Multisensor Optical-Heat
Detector Installation Sheet
Description
The Signature Series SIGA-OSHD Intelligent Multisensor Optical-Heat
Detector is an intelligent device that contains an optical smoke sensor
and a rate-of-rise heat sensor with a fixed temperature setting. The
detector analyzes data from both the heat sensor and the sensing
chamber to recognize smoke from a fire while ignoring nuisance
non-fire sources and whether to initiate an alarm to the Fire Alarm
Control Panel. This device can be operated as a single detector using
smoke or heat to initiate an alarm or as a split sensor with heat and
smoke initiating separate signals.
LED indicator. The LED indicator (see Figure 1 below) displays the
following states:
•Normal: Green LED indicator flashes, no action.
•Alarm/active: Red LED indicator flashes, evacuate the area.
Figure 1: SIGA-OSHD features
1. Self-locking tab
2. LED indicator
Installation
Notes
•This detector does not operate without electrical power. As fires
frequently cause power interruption, discuss further safeguards
with the local fire protection specialist.
•This detector does not sense fires in areas where smoke or heat
cannot reach the detector. Smoke or heat from fires in walls, roofs,
or on the opposite side of closed doors may not reach the detector.
•The heat sensor in this device provides a source of supplemental
information. The heat sensor by itself does not provide life safety
protection.
•To ensure proper operation, store the detector within the
recommended ranges. Allow the detector to stabilize to room
temperature before applying power.
•The dust cover (supplied) must remain on the detector during
installation and be removed prior to commissioning and service.
The dust cover is not a substitute for removing the detector during
new construction or heavy remodeling.
•Do not use smoke detectors with detector guards unless the
combination has been evaluated and found suitable.
•In Canada, install according to the CAN/ULC-S524 Standard for
the Installation of Fire Alarm Systems, the CSA C22.1 Canadian
Electrical Code, and the local authority having jurisdiction.
•Upon completion of the original installation and following any
modifications or additions to the system, perform a calibrated
sensitivity test per NFPA code. Signature Series devices can
perform this test and the panel can generate a system sensitivity
report.
To install the detector:
1. Install and wire the base, as described on the installation sheet
supplied with the base.
2. Remove the serial number label from the detector and attach it to
the project documentation.
3. Attach the detector to the base by rotating the detector clockwise
until it snaps into the locked position.
Testing
Before testing, notify the proper authorities that the fire alarm system is
undergoing maintenance and will be temporarily out of service.
Test each sensor in the detector.
Caution: Heat damage. Excessive heat may damage the detector
outer cover. Do not apply excessive heat when using a hair dryer.
When using a Testifire detector tester, you must install a SIGA Testifire
Adapter Assembly.
Make sure the SIGA Testifire Adapter Assembly (model
SIGA-TSTSPACER) is installed in the Testifire detector tester before
testing. Refer to the SIGA Testifire Adapter Assembly Installation
Sheet (P/N 3101942-ML) for further details.
To perform an initial installation test:
1. Remove the detector from its base and verify that the proper
detector address, trouble signals, and messages are reported.
2. For SIGA-OSHD detectors placed in the air ducts, verify that the
airflow is within specifications. See “Specifications” on page 2.
3. If wired for Class A operation, verify that the detector continues to
operate first with SLC_IN disconnected, and then with SLC_OUT
disconnected. (Refer to the installation sheet for the base.)
2
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4. Place a momentary ground fault on the SLC circuit to verify
operation of the ground fault detection circuitry.
5. Run a system detector sensitivity report on all detectors and verify
that readings fall within acceptable limits.
6. Perform a sensor function test, as described below.
To perform sensor function tests:
1. If desired, use the fire alarm control panel to put the detector or
zone into a service group for testing. (Refer to the panel technical
reference manual for instructions.)
2. Activate the smoke sensor using No Climb Products model Smoke
Centurion/M8, FireTech Smoke or Smoke Sabre smoke aerosol
spray, a smoke generator, or the Testifire detector tester per the
manufacturer’s instructions.
3. Activate the heat sensor using a hair dryer (maintaining a distance
of three inches) or using a Testifire detector tester per the
manufacturer’s instructions.
Maintenance
To ensure proper operation, plan maintenance (regular or selected) of
the detector in accordance with the AHJ and all applicable governing
laws, codes, or standards. Refer to CAN/ULC-S536 Standard for the
Inspection and Testing of Fire Alarm Systems and NFPA 72 National
Fire Alarm and Signaling Code.
Refer to Technical Bulletin P/N 3102625-EN for additional information
and cleaning instructions.
Specifications
Operating voltage
15.20 to 19.95 VDC
Current
Normal operating current
Alarm
32 uA
45 uA
Vibration level
10 to 35 Hz, with an amplitude of
0.01 in.
Rate-of-rise
15°F/min (8°C/min)
Maximum spacing
for Heat Detectors [2]
50 ft. (15.2 m) centers
Wall mount distance from
ceiling
12 in. (305 mm) max.
Compatible bases
Standard
Relay
Isolator
Audible
SIGA-SB, SIGA-SB4
SIGA-RB, SIGA-RB4
SIGA-IB, SIGA-IB4
SIGA-AB4G, SIGA-AB4GT
SIGA-AB4G-LF
Compatible detector testers [1]
Testifire 1000, Testifire 2000
Operating environment
Temperature
Relative humidity
32 to 100°F (0 to 38°C)
0 to 93% noncondensing
Storage temperature
−4 to 140°F (−20 to 60°C)
Environmental compensation
Automatic
[1] Requires the SIGA-TSTSPACER Testifire adapter assembly.
[2] When replacing SIGA-HRS and SIGA-HFS detectors with the
SIGA-OSHD, ensure that the spacing is 50 ft. (15.2 m) or less.
Regulatory information
North American
standards
CAN/ULC-S529, CAN/ULC-S530, UL 268-7,
UL 268A, UL 521
UL/ULC smoke
sensitivity range
0.5 to 4.36 %/ft. (1.63 to 13.62 %/m) obscuration
UL/ULC fixed-
temperature alarm
rating
135°F (57.2°C)
UL/ULC Actual
alarm point
129 to 141°F (53.9 to 60.6°C)
FCC compliance
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
Industry Canada
compliance
This Class A digital apparatus complies with
Canadian ICES-003.
Contact information
For contact information, see www.edwardsfiresafety.com
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