Edwards SIGA2-HRS, SIGA2-HCOS, SIGA2-HFS Installation And Operation Manual
LIFE SAFETY & INCIDENT MANAGEMENT
Intelligent Heat
Detectors with
Optional
CO Sensors
SIGA2-HFS, SIGA2-HRS, SIGA2-HCOS
EDWARDS® Catalog Intelligent Initiating Devices
Overview
Signature Series fixed temperature and rate-of-rise heat detectors bring advanced sensing technology to a practical design
that increases efficiency, saves installation time, cuts costs, and
extends property protection capabilities. Continuous self-diagnostics ensure reliability over the long-haul, while the latest thermister
technology makes these detectors ideal whereever dependable
heat detection is required. With their modular CO sensor, these
devices pull double-duty — continually monitoring the environment for heat from combustion, as well as its invisible yet deadly
companion, carbon monoxide.
Like all Signature Series detectors, these are intelligent device
that gather analog information from their heat and CO sensor (if
present), converting this data into digital signals. To make an alarm
decision, the detector’s on-board microprocessor measures and
analyzes sensor readings and compares this information to historical data. Digital filters remove signal patterns that are not typical of
fires, thus virtually eliminating unwanted alarms.
The SIGA2-HCOS is a fixed temperature heat detector that
includes an advanced carbon monoxide sensor and daughterboard. When the electrochemical cell reaches its end of life after
approximately six years, the detector signals a trouble condition
to the control panel. The sensor/daughterboard module is fieldreplaceable.
5278-1657:
0300
S853
Standard Features
Note: Some features described here may not be supported by
all control systems. Check your control panel’s Installation and
Operation Guide for details.
• Fixed temperature or rate-of-rise heat detection with optional
carbon monoxide sensor
• Field-replacable carbon monoxide sensor/daughterboard
module
• Uses existing wiring
• Automatic device mapping
• Ground fault detection by module
• Up to 250 devices per loop
• Non-volatile memory
• Electronic addressing
• Bicolor (green/red) status LED
• Standard, relay, fault isolator, and audible mounting bases
• 50 foot (15.2 meter) spacing
• 15 °F (9 °C) per minute rate-of-rise alarm point (HRS)
• 135 °F (57 °C) fixed temperature alarm point (HFS/HRS/HCOS)
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Application
Heat detection
SIGA2-HRS combination fixed temperature/rate-of-rise heat detectors provide a 15 °F (9 °C) per minute rate-of-rise heat sensor
for the detection of fast-developing fires, as well as a 135°F (57°C)
fixed temperature sensor for slow building-fires. The heat sensor
monitors the temperature of the air and determines whether an
alarm should be initiated.
SIGA2-HFS and SIGA2-HCOS fixed temperature heat detectors
provide a 135°F (57°C) fixed-temperature heat sensor for the detection of heat due to fire. The heat sensor monitors the temperature of
the air and determines whether an alarm should be initiated.
Carbon monoxide detection
The SIGA2-HCOS includes a replaceable chemical cell for the detection of carbon monoxide (CO). CO detection has rapidly become
a standard part of life safety strategies everywhere. Monitored CO
detection is becoming mandated with increasing frequency in all
types of commercial applications, but particularly in occupancies
such as hotels, rooming houses, dormitories, day care facilities,
schools, hospitals, assisted living facilities, and nursing homes. In
fact, more than half of the U.S. population already lives in states
requiring the installation of CO detectors in some commercial occupancies. This is because carbon monoxide is the leading cause of
accidental poisoning deaths in America. Known as the “Silent Killer,”
CO is odorless, tasteless, and colorless. It claims nearly 500 lives,
and results in more than 15,000 hospital visits annually.
Installation
Signature Series detectors
mount to North American
1-gang boxes, 3-1/2 inch
or 4 inch octagon boxes,
Installation
1
2
and to 4 inch square electrical boxes 1-1/2 inches (38
mm) deep. They mount to
European BESA and 1-gang
boxes with 60.3 mm fixing
centers. See mounting base
installation and wiring for
1. Tamper-resist lever arm on base
(Break off to disable.)
2. Access slot for tamper-resist mechanism
more information.
Testing & Maintenance
The user-friendly maintenance program shows the current state
of each detector and other pertinent messages. Single detectors
may be turned off temporarily from the control panel. Availability
of maintenance features is dependent on the fire alarm system
used. When the CO sensor’s electrochemical cell reaches its end
of life, the detector signals a trouble condition to the control panel.
The sensor/daughterboard module is field-replaceable. Scheduled
maintenance (Regular or Selected) for proper detector operation
should be planned to meet the requirements of the Authority Having Jurisdiction (AHJ). Refer to current NFPA 72, NFPA 720, and
ULC CAN/ULC 536 standards.
Sensing and reporting technology
The microprocessor in each detector provides four additional benefits - Self-diagnostics and History Log, Automatic Device Mapping, and Fast, Stable Communication.
Self-diagnostics and History Log - Each Signature Series
detector constantly runs self-checks to provide important maintenance information. The results of the self-check are automatically
updated and permanently stored in the detector’s non-volatile
memory
Automatic Device Mapping - The loop controller learns where
each device’s serial number address is installed relative to other
devices on the circuit. The mapping feature provides supervision
of each device’s installed location to prevent a detector from being
reinstalled (after cleaning etc.) in a different location from where it
was originally.
Fast Stable Communication - On-board intelligence means less
information needs to be sent between the detector and the loop
controller. Other than regular supervisory polling response, the
detector only needs to communicate with the loop controller when
it has something new to report.
Accessories
Detector mounting bases have wiring terminals that are acces-
sible from the “room-side” after mounting the base to the electrical
box. The bases mount to North American 1-gang boxes and to
3½ inch or 4 inch octagon boxes, 1½ inches (38 mm) deep. They
also mount to European BESA and 1-gang boxes with 60.3 mm
fixing centers. The SIGA-SB4, SIGA-RB4, and SIGA-IB4 mount to
North American 4 inch sq. electrical boxes in addition to the above
boxes. They include the SIGA-TS4 Trim Skirt which is used to
cover the “mounting ears” on the base. The SIGA-AB4G mounts
to a 4” square box only.
SIGA-AB4G/T/LF
Audible Base
SIGA-SB
Standard Base
SIGA-IB
Isolator Base
SIGA-RB
Relay Base
Remote LED SIGA-LED - The remote LED connects to the
SIGA-SB or SIGA-SB4 Standard Base only. It features a North
American size 1-gang plastic faceplate with a white finish and red
alarm LED.
SIGA-TS4 Trim Skirt - Supplied with 4 inch bases, it can also
be ordered separately to use with the other bases to help hide
surface imperfections not covered by the smaller bases.
SIGA-AB4G and SIGA-AB4GT - These sounder bases are de-
signed for use where localized or group alarm signaling is required.
The SIGA-AB4G is compatible with Signature Series smoke and
heat detectors. The SIGA-AB4GT sounder base, when used with
the SIGA-TCDR Temporal Pattern Generator module, adds an
audible output function to any Signature Series detector, including
fire and CO detectors.
SIGA-LED
Remote LED
Compatibility
SIGA2 series detectors are compatible only with the Signature
Loop Controller.
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