Features
Accurate and reliable heat detection for protection of property**
UL listed to Standard 521
Fixed temperature operation is suitable for most applications:
- Thermistor based design is inherently rate compensated due to minimal thermal lag
- Available for 135° F (57° C) or 200° F (93° C)
- UL and ULC spacing distance is 70 ft (21.3 m)
Available with rate-of-rise temperature detection:
- Dual thermistor rate-of-rise operation
- For use where anticipated ambient temperature changes are less than 6° F/minute (3.33° C/minute)
- UL and ULC spacing distance is 70 ft (21.3 m)
Epoxy encapsulated electronic design provides:
- Operation for ceiling or wall mounting
- Easily tested, self-restoring operation with repeatable accuracy
- Alarm indicating LED located on detector
- Current limited alarm that is compatible with two-wire initiating device circuits (IDCs)
- Designed for EMI compatibility
Direct connecting design:
- Wiring attaches directly to detector terminals
- Detector mounts onto mechanical adapter plate (supplied)
Accurate Electronic Design. Simplex electronic
heat detectors use a fast response, thermistor based design
to provide temperature sensing that quickly, accurately,
and consistently identifies when fixed temperatures are
exceeded. The fixed temperature sensing thermistor
readily tracks the local ambient temperature. This
eliminates the time required to melt a lead pellet or heat a
bimetallic element as occurs in mechanical heat detector
designs and provides the required heat detection for most
applications.
Rate-of-rise detection is determined by comparing
two thermistor responses. By combining accurate
thermistors with proper physical placement, this patented
rate-of-rise detection design achieves a high level of
performance not normally available with mechanical
detection.
Applications Reference
Heat detectors are used where property protection is desired
and where life safety protection is not required or is
performed by other equipment. Typical heat detector
applications are satisfied by use of these fixed temperature
electronic detectors.
The addition of rate-of-rise operation provides two forms of
heat detection for use where temperature fluctuations are
controlled and are less than 6° F/min (3.33° C/min). Where
temperatures may fluctuate more quickly, use fixed
temperature detection.
Alarm Indicating LED Operation
The heat detector LED turns ON continuously when in
alarm. During normal conditions the LED is OFF.
Fixed Temperature Guidelines
135° F (57° C) fixed temperature detectors are for
normal temperatures that do not exceed 100° F (38° C).
200° F (93° C) fixed temperature detectors are for
normal temperatures that exceed 100° F (38° C) but are
less than 150° F (66° C).
Alarm Verification Application Note
When connecting these electronic heat detectors to a
2-wire initiating device circuit (IDC) that is providing
Alarm Verification for smoke detectors, use the
4098-9682, 4-wire base. The 4-wire base provides an
alarm contact that is not current-limited. (Heat detectors
in the 2-wire base present a current-limited alarm
condition that is not compatible with Alarm Verification.
Initiating devices other than smoke detectors are required
to activate the alarm without starting the alarm
verification cycle.)
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