Before Installing
This detector must be installed in compliance with
the control panel installation manual and meet the
requirements of NFPA 72, and/or the local authority
having jurisdiction.
Read this manual carefully before using the detec-
tor. This manual should be left with the owner/user
of this equipment.
General Description
The 5600 series mechanical heat detector is in-
tended for use in property protection applications,
or for non-life-safety installations where smoke de-
tection is not practical or appropriate.
For life-safety installations, smoke detectors must
be used, in lieu of, or in addition to mechanical
heat detectors.
The 5600 series consists of both single- and dual-cir-
cuit heat detectors featuring fixed temperature thermal
sensors or combination fixed temperature/rate-of-rise
sensors, with temperature ratings of 135ºF (57ºC) or
194ºF (90ºC).
Markings on the exterior of the detector indicate the
specific activation method and temperature rating. All
models are identified as either 135ºF/57ºC or 194ºF/
90ºC. Models equipped with combination fixed tem-
perature/rate-of-rise sensors are marked FX/ROR.
Fixed temperature only models are marked FX.
D500-46-00 1 I56-2175-002R
INSTALLATION AND MAINTENANCE INSTRUCTIONS
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
5600 Series
Mechanical Heat Detector
Single Circuit: 5601P, 5602, 5603, 5604
Dual Circuit: 5621, 5622, 5623, 5624
Non-Resettable Fixed Temperature Sensor
The fixed temperature element reacts to heat by re-
sponding to a specific temperature setting (135ºF
or 194ºF). The detection method is based on the
spring action of a metal contact, held to the metal
chamber by a fusible alloy. When the temperature
reaches the alloy’s melting point, the metal contact
will depress the diaphragm, causing the electrical
contact to close the circuit. The circular external
heat collector is released from the detector to visu-
ally indicate that the detector has been activated.
NOTE: 5600 series Fixed Temperature models (5603,
5604, 5623, and 5624) are non-resettable, and can-
not be tested.
Self-Restoring Rate-of-Rise (ROR) Sensor
The rate-of-rise element responds to a rapid rise of
temperature, approximately 15ºF (8.3ºC) per min-
ute. As the temperature rises, the air within the
sealed chamber expands. Should the chamber air
expand faster than it can escape through the cali-
brated vent, the diaphragm is depressed, and the
electrical contact closes the circuit.
NOTE: Only the ROR element of 5600 series com-
bination fixed temperature/ROR models (5601P,
5602, 5621, and 5622) are self-restoring, and may be
tested using a hair dryer or heat gun. When testing
the ROR element, to prevent the activation of the
fixed temperature element, the heat source must not
exceed the fixed temperature rating of the detector.
Table 1. 5600 Series Mechanical Heat Detectors
Model
No.
Circuit
Temperature
Rating
Thermal Sensor
UL Maximum Spacing
(10-foot ceiling)
5601P Single 135ºF (57ºC) Fixed Temperature/Rate of Rise 50-feet x 50-feet
5602 Single 194ºF (90ºC) Fixed Temperature/Rate of Rise 50-feet x 50-feet
5603 Single 135ºF (57ºC) Fixed Temperature 25-feet x 25-feet
5604 Single 194ºF (90ºC) Fixed Temperature 25-feet x 25-feet
5621 Dual 135ºF (57ºC) Fixed Temperature/Rate of Rise 50-feet x 50-feet
5622 Dual 194ºF (90ºC) Fixed Temperature/Rate of Rise 50-feet x 50-feet
5623 Dual 135ºF (57ºC) Fixed Temperature 25-feet x 25-feet
5624 Dual 194ºF (90ºC) Fixed Temperature 25-feet x 25-feet
NOTE: Refer to NFPA72 guidelines for spacing reductions when ceiling heights exceed 10 feet.
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