System Sensor 1451, 5451, 2451, 2451TH, 4451HT Installation And Maintenance Instructions Manual
...
INSTALLATION AND MAINTENANCE INSTRUCTIONS
1451 Plug-in Ionization
Smoke Detector
Specifications
Size
Height: 2.4 inches (6.1 cm)
Diameter: 4.0 inches (10.1 cm)
Weight: 0.6 lb. (277 g)
Operating Temperature Range: 0° to +49°C (32° to 120°F)
Operating Humidity Range: 10% to 93% Relative Humidity Non-condensing
Latching Alarm: Reset by momentary power interruption.
Before installing
Please thoroughly read the System Sensor manual I56-407,
Applications Manual for System Smoke Detectors, which
provides detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of
this manual are available at no charge from System Sensor.
(For installation in Canada refer to CAN/ULC-S524, Stan-
dard for the Installation of Fire Alarm Systems, and CEC
Part 1, Sec. 32.)
Model 1451 has been approved for marine use in dry locations by Underwriters Laboratory, Inc. The detector is to be
used in dry interior locations only.
Spacing
Spacing of 30 ft. on a smooth ceiling as per NFPA 72E.
Where conditions or response requirements vary, other
spacing may apply.
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: This sensor must be tested and maintained
regularly following NFPA 72 requirements. This sensor
should be cleaned at least once a year.
General Description
Model 1451 dual chamber ionization detectors utilize state-ofthe-art, unipolar sensing chambers. These detectors are designed to provide open area protection, and to be used with
compatible UL-listed control panels only. The capability of
plugging these detectors into a variety of special bases makes
them more versatile than equivalent direct-wired models.
Two LEDs on each detector light to provide a local 360° visible alarm indication. Remote LED annunciator capability
is available as an optional accessory. These detectors also
have the latching alarm feature. The alarm can be reset
only by a momentary power interruption. For testing, these
detectors have an internal magnetically activated reed
switch.
Base Selection And Wiring Guide
Refer to the installation instructions for the plug-in detector
bases for wiring instructions. System Sensor has available a
variety of detector bases for this smoke detector, including 2wire applications with and without relays and/or current limiting resistors, 4-wire and 120VAC applications. (Note: the
120VAC detector base is not available in Canada.)
All bases are provided with screw terminals for power,
ground, remote annunciator connections, and relay contact
connections, if applicable. The electrical ratings for each
detector-base combination are also included in the base installation instructions.
D400-01-01 1 I56-278-05
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Installation
NOTE: All wiring must conform to applicable local codes,
ordinances, and regulations.
NOTE: Verify that all detector bases are installed, that the
initiating-device circuits have been tested, and that
the wiring is correct.
CAUTION
Dust covers can be used to help limit dust entry to the detector, but they are not a substitute for removing the detector during building construction. Remove any dust covers
before placing system in service.
WARNING
Remove power from initiating-device circuits before installing detectors.
1. Install Detectors:
a. Place the detector into the detector base.
b. Turn the detector clockwise until the detector drops
into place.
c. Continue turning detector clockwise to lock it in
place.
2. Tamper-proof Feature
The detector bases include a feature that, when activated, prevents removal of the detector without the use
of a tool. See the installation instruction manual of the
detector base for details in using this feature.
3. After all detectors have been installed, apply power to
the control unit.
4. Test the detector as described under TESTING.
5. Reset the detector at the system control panel.
Testing
Before testing, notify the proper authorities that the smoke
detector system is undergoing maintenance and will temporarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.
Detectors must be tested after installation and periodic
maintenance. The 1451 may be tested as follows:
Before testing the detector, look for the presence of the
flashing LEDs. If they do not flash, either power has been
lost to the detector (check the wiring), or it is defective (return for repair).
A. Test Magnet (System Sensor Model No. M02-04-00)
1. Place the magnet against the cover opposite the test
module socket. (See Figure 1.)
2. The LEDs on the detector should latch on within 30
seconds.
3. Reset the detector at the system control panel.
6. Notify the proper authorities that the system is in
operation.
Figure 1. Botom and side views showing test magnet position:
LED
TEST MODULE
SOCKET
LED
TEST
MAGNET
PAINTED
SURFACE
TEST
MAGNET
A78-1161-00
D400-01-01 2 I56-278-05
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B. Test Module (System Sensor Model No. MOD400R)
The MOD400 or MOD400R is used with a digital or analog voltmeter to check the detector sensitivity as described in the test module’s manual.
4. After cleaning, snap the screen into the cover, then place
the cover and screen assembly on the detector, turning
clockwise until it is locked in place.
5. Reinstall the detector.
C. Aerosol Generator (Gemini 501)
Set the generator to represent 4%/ft. to 5%/ft. obscuration as described in the Gemini 501 manual. Using the
bowl shaped applicator, apply aerosol until unit alarms.
Notify the proper authorities that the system is back on
line.
Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.
Maintenance
It is recommended that the detector be removed from its
mounting base to facilitate easier cleaning. The detector is
cleaned as follows:
NOTE: Before removing the detector, notify the proper au-
thorities that the smoke detector system is undergoing maintenance, and will temporarily be out of
service. Disable the zone or system undergoing
maintenance to prevent unwanted alarms.
6. Test the detector as described under TESTING.
7. Notify the proper authorities that the system is back on
line.
Figure 2:
REMOVABLE
COVER
FOR
CLEANING
REMOVABLE SCREEN
(P/N RS14)
1. Remove the detector screen and cover assembly by depressing the three lock prongs on the top of the cover,
rotating the cover counterclockwise, and pulling the
screen and cover assembly away from the detector. (See
Figure 2.) Usage of a System Sensor CRT400 cover removal tool is recommended.
2. Remove the screen from the cover.
3. Use a vacuum cleaner to remove dust from the screen,
the cover, and the sensing chamber.
LOCK PRONG
SENSING CHAMBER
A78-2340-00
D400-01-01 3 I56-278-05
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WARNING
The Limitations of Property Protection Smoke Detectors
This smoke detector is designed to activate and initiate emergency action, but will do so only when it is used in conjunction with an authorized
fire alarm system. This detector must be installed in accordance with
NFPA standard 72.
Smoke detectors will not work without power. AC or DC powered
smoke detectors will not work if the power supply is cut off.
Smoke detectors will not sense fires which start where smoke does not
reach the detectors. Smoldering fires typically do not generate a lot of
heat which is needed to drive the smoke up to the ceiling where the
smoke detector is usually located. For this reason, there may be large delays in detecting a smoldering fire with either an ionization type detector
or a photoelectric type detector. Either one of them may alarm only after
flaming has initiated which will generate the heat needed to drive the
smoke to the ceiling.
Smoke from fires in chimneys, in walls, on roofs or on the other side of a
closed door(s) may not reach the smoke detector and alarm it. A detector
cannot detect a fire developing on another level of a building quickly or at
all. For these reasons, detectors shall be located on every level and in
every bedroom within a building.
Smoke detectors have sensing limitations, too. Ionization detectors and
photoelectric detectors are required to pass fire tests of the flaming and
smoldering type. This is to ensure that both can detect a wide range of
types of fires. Ionization detectors offer a broad range of fire sensing capability but they are somewhat better at detecting fast flaming fires than
slow smoldering fires. Photoelectric detectors sense smoldering fires better
than flaming fires which have little, if any, visible smoke. Because fires develop in different ways and are often unpredictable in their growth, neither type of detector is always best, and a given detector may not always
provide early warning of a specific type of fire.
In general, detectors cannot be expected to provide warnings for fires resulting from inadequate fire protection practices, violent explosions, escaping gases which ignite, improper storage of flammable liquids like
cleaning solvents which ignite, other similar safety hazards, arson, smoking in bed, children playing with matches or lighters, etc. Smoke detectors
used in high air velocity conditions may have a delay in alarm due to dilution of smoke densities created by frequent and rapid air exchanges. Additionally, high air velocity environments may create increased dust
contamination, demanding more frequent maintenance.
Smoke detectors cannot last forever. Smoke detectors contain electronic
parts. Even though smoke detectors are made to last over 10 years, any
part can fail at any time. Therefore, smoke detectors shall be replaced after
being in service for 10 years. The smoke detector system that this detector
is used in must be tested regularly per NFPA 72. This smoke detector
should be cleaned regularly per NFPA 72 or at least once a year.
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from defects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this smoke detector. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of
the smoke detector which is found to be defective in materials or workmanship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll
free number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
D400-01-01 4 I56-278-05
Technical Manuals Online! - http://www.tech-man.com
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
© System Sensor 1996
INSTALLATION AND MAINTENANCE INSTRUCTIONS
2451 and 2451TH Photoelectronic
Plug-in Smoke Detectors
Specifications
Size
Height: 2.4 inches (61 cm)
Add 0.5 inches (13 cm) for thermal model 2451TH
Diameter: 4.0 inches (101 cm)
Weight: 0.5 lb. (277 g)
Operating Temperature Range: 0° to 49°C (32° to 120°F)
Operating Humidity Range: 10% to 93% Relative Humidity
Maximum Air Velocity: 3000 Ft./Min. (15 M/S)
Locking Alarm: Reset by momentary power interruption
Fixed Temperature Thermal: 135°F (57°C)
Before Installing
Please thoroughly read the System Sensor publication, I56407, Applications Guide for System Smoke Detectors, which
provides detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of
this guide are available at no charge from System Sensor.
(For installations in Canada, refer to CAN4-S524, Standard
for the Installation of Fire Alarm Systems and CEC Part 1,
Sec. 32.)
NOTICE: This manual should be left with the owner/user
of this equipment.
Two LEDs on each detector light to provide a local 360° visible alarm indication. They flash every ten seconds indicating that power is applied and the detector is operating
properly. The LEDs light continuously in alarm. Remote
LED annunciator capability is available as an optional accessory. These detectors also have the Latching Alarm feature. The alarm can be reset only by a momentary power
interruption. These detectors may be tested by activating
the internal reed switch with a magnet, or by inserting a
calibrated test card in a test slot after removing the detector
cover.
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
IMPORTANT: This sensor must be tested and maintained
regularly following NFPA 72 requirements. This sensor
should be cleaned at least once a year.
General Description
The 2451 photoelectronic detectors utilize state-of-the-art,
optical sensing chambers. These detectors are designed to
provide open area protection, and to be used with compatible UL-listed control panels only. Model 2451TH has the
same specifications as Model 2451, with the addition of a
built-in fixed temperature (135°F - 57°C) thermal detection
unit. The capability of plugging these detectors into a variety of special bases makes them more versatile than
equivalent direct-wired models.
D400-02-01 1 I56-277-08
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The 2451 has been approved for marine use in dry locations
by Underwriters Laboratory, Inc. The detector is to be used
in dry interior locations only.
Base Selection and Wiring Guide
Refer to the installation instructions for the Plug-in Detector Bases for base selection and wiring instructions. System
Sensor has a variety of detector bases available for this
smoke detector. This includes 2-wire applications with and
without relays and/or current limiting resistors, 4-wire and
120VAC applications. (Note: the 120VAC detector base is
not available in Canada.)
All bases are provided with screw terminals for power,
ground, remote annunciator connections and relay contact
connections, if applicable. The electrical ratings for each
detector-base combination are also included in the base
installation instructions.
Installation
NOTE: Wiring must conform to applicable local codes, or-
dinances, and regulations.
3. Afer all detectors have been installed, apply power to the
control unit.
NOTE: Verify that all detector bases are installed, that the
initiating-device circuits have been tested, and that
the wiring is correct. (Refer to detector base
manual for testing procedure.)
WARNING
Disconnect power from initiating-device circuits before installing detectors.
1. Install detectors:
a. Place the detector into the detector base
b. Turn the detector clockwise until the detector drops
into place.
c. Continue turning detector clockwise to lock it in
place.
2. Tamper-Resistance: This detector includes a tamper-resistant feature that prevents removal of the detector
without the use of a tool. To make the detector tamperresistant, break off the smaller tab at the scribed line on
the tamper-resistant tab, on the detector mounting
bracket, then install the detector. To remove the detector
from the bracket once it has been made tamper-resistant, use a pocket screwdriver, or similar tool, to depress
the tamper-resistant tab located in the slot on the
mounting bracket. Then, turn the detector counterclockwise until it separates from the base.
4. Test the detector using the magnet or the test card as described under TESTING.
5. Reset the detector at the system control panel.
6. Notify the proper authorities that the system is back on
line.
CAUTION
Dust covers can be used to help limit dust entry to the detector, but they are not a substitute for removing the detector during building construction. Remove any dust covers
before placing system in service.
Figure 1. Bottom and side views showing position of test magnet:
LED
PAINTED
TEST MODULE
SOCKET
TEST
MAGNET
SURFACE
TEST
MAGNET
LED
D400-02-01 2 I56-277-08
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A78-1213-00
Testing
Before testing, notify the proper authorities that the smoke
detector system is undergoing maintenance and will temporarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.
Detectors must be tested after installation and periodic
maintenance. To test the 2451:
NOTE: Before testing the detector, check to ensure that the
LEDs are blinking. If they are not, the detector has
lost power (check the wiring) or it is defective (return for repair).
E. Direct Heat Test (2451TH only)
To test the bi-metallic thermal collector, aim a heat
source, such as a low powered heat gun or blow dryer,
across the detector. Hold the heat source about 12 inches
(30 cm) from the detector to avoid damaging the plastic.
When the temperature rises to greater than 135°F
(57°C), the detector should latch into the alarm. The bimetallic collector automatically resets after the test.
Notify the proper authorities that the detection system is
back on line.
A. Test Magnet (System Sensor model no. M02-04-00)
1. Place the magnet against the cover opposite the test
module slot to activate the test feature (see Figure 1).
2. The LEDs should latch on within 5 seconds indicating
alarm and annunciating the panel.
B. Calibrated Test Card (System Sensor no. R59-18-00)
1. Remove the detector cover by placing a small bladed
screwdriver in the side slot of the detector cover,
twisting it slightly until the cover can be turned counterclockwise for removal.
2. Insert the NO ALARM end of the test card fully into
the test slot (see Figure 2) then slide it counterclockwise until it stops.
3. Wait for at least 20 seconds. The detector should NOT
alarm.
4. Remove the test card by sliding it clockwise before removing, then insert the ALARM end.
5. The LEDs should latch on within 20 seconds indicating alarm and annunciating the panel.
6. Put the cover back by gently rotating it clockwise until it locks in place.
C. Test Module (System Sensor no. MOD400R)
The MOD400R is used with your DMM or voltmeter to
check the detector sensitivity as described in the
MOD400R’s manual.
Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.
Figure 2:
REMOVABLE HEAD COVER
TEST SLOT
CLEANABLE SCREEN
P/N RS24 (W/O THERMAL)
HEAD COVER
REMOVAL SLOT
VANED CHAMBER
D. Aerosol Generator (Gemini 501)
Set the generator to represent 4% to 5%/Ft. obscuration
as described in the Gemini 501 Manual. Using the bowl
shaped applicator, apply aerosol until the unit alarms.
D400-02-01 3 I56-277-08
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A78-1213-01
Maintenance
It is recommended that the detector be removed from its
mounting base to facilitate easier cleaning. The detector is
cleaned as follows:
NOTE: Before removing the detector, notify the proper
authorities that the smoke detector system is undergoing maintenance and will temporarily be out
of service. Disable the zone or system undergoing
maintenance to prevent unwanted alarms.
1. Remove the detector cover by placing a small bladed
screwdriver in the side slot of the detector cover, twisting it slightly until the cover can be turned counterclockwise for removal.
2. Vacuum the screen carefully without removing it. If further cleaning is required continue with Step 3, otherwise
skip to Step 6.
The Limitations of Property Protection Smoke Detectors
This smoke detector is designed to activate and initiate emergency action, but will do so only when it is used in conjunction with an authorized
fire alarm system. This detector must be installed in accordance with
NFPA standard 72.
Smoke detectors will not work without power. AC or DC powered
smoke detectors will not work if the power supply is cut off.
Smoke detectors will not sense fires which start where smoke does not
reach the detectors. Smoldering fires typically do not generate a lot of
heat which is needed to drive the smoke up to the ceiling where the
smoke detector is usually located. For this reason, there may be large delays in detecting a smoldering fire with either an ionization type detector
or a photoelectric type detector. Either one of them may alarm only after
flaming has initiated which will generate the heat needed to drive the
smoke to the ceiling.
Smoke from fires in chimneys, in walls, on roofs or on the other side of a
closed door(s) may not reach the smoke detector and alarm it. A detector
cannot detect a fire developing on another level of a building quickly or at
all. For these reasons, detectors shall be located on every level and in
every bedroom within a building.
Smoke detectors have sensing limitations, too. Ionization detectors and
photoelectric detectors are required to pass fire tests of the flaming and
3. Remove the screen by pulling it straight out (see Figure
2). Vacuum the inside.
4. Clean the vaned chamber piece by vacuuming or blowing out dust and particles.
5. To replace the screen, orient it so that the arrow on top
aligns with the test module socket of the detector. Carefully push the screen onto the base making sure it fits
tightly to the chamber.
6. Replace the cover by gently rotating it clockwise until it
locks in place.
7. Reinstall the detector.
8. Notify the proper authorities that the system is back on
line.
WARNING
smoldering type. This is to ensure that both can detect a wide range of
types of fires. Ionization detectors offer a broad range of fire sensing capability but they are somewhat better at detecting fast flaming fires than
slow smoldering fires. Photoelectric detectors sense smoldering fires better
than flaming fires which have little, if any, visible smoke. Because fires develop in different ways and are often unpredictable in their growth, neither type of detector is always best, and a given detector may not always
provide early warning of a specific type of fire.
In general, detectors cannot be expected to provide warnings for fires resulting from inadequate fire protection practices, violent explosions, escaping gases which ignite, improper storage of flammable liquids like
cleaning solvents which ignite, other similar safety hazards, arson, smoking in bed, children playing with matches or lighters, etc. Smoke detectors
used in high air velocity conditions may have a delay in alarm due to dilution of smoke densities created by frequent and rapid air exchanges. Additionally, high air velocity environments may create increased dust
contamination, demanding more frequent maintenance.
Smoke detectors cannot last forever. Smoke detectors contain electronic
parts. Even though smoke detectors are made to last over 10 years, any
part can fail at any time. Therefore, smoke detectors shall be replaced after
being in service for 10 years. The smoke detector system that this detector
is used in must be tested regularly per NFPA 72. This smoke detector
should be cleaned regularly per NFPA 72 or at least once a year.
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from defects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this smoke detector. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of
the smoke detector which is found to be defective in materials or workmanship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll
free number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
D400-02-01 4 I56-277-08
Technical Manuals Online! - http://www.tech-man.com
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
© System Sensor 1996
INSTALLATION AND MAINTENANCE INSTRUCTIONS
4451HT and 4451HTA Plug-in
Fixed Intermediate Temperature
Thermal Detectors
Specifications
Diameter: 4.1 inches (104 mm)
Height: 2.1 inches (53 mm)
Weight: 5 ounces (150 g)
Installation Temperatures: 32° to 150°F (0° to 66°C)
Operating Humidity Range: 10% to 93% Relative Humidity
Latching Alarm: Reset by momentary power interruption
Sensitivity: 190°F (88°C)
Operating Voltage: 15-35 VDC
Standby Current: 100 µA
Before Installing
This detector must be installed in compliance with the control panel installation manual and meet the requirements of
the authority having jurisdiction. In addition, the National
Fire Protection Association has published codes, standards,
and recommended practices for the installation and use of
the above appliances (NFPA 72). For installation in Canada,
refer to CAN/ULC-S524 and CEC Part 1, Sec. 32. Therefore,
the installer must be familiar with these requirements, with
local codes, and any special requirements of the authority
having jurisdiction.
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: This detector must be tested and maintained
regularly following NFPA 72 requirements. The detector
should be cleaned at least once a year.
General Description
The 4451HT and 4451HTA detectors are fixed intermediate
temperature alarm thermal detectors utilizing a state-ofthe-art dual thermistor sensing circuit. These detectors are
designed to be used with compatible control panels only.
Two LEDs on each detector light to provide 360° visibility
of the detector indication. Remote LED annunciator capability is provided as standard, and the RA400Z remote LED
annunciator is available as an optional accessory.
Base Selection And Wiring Guide
Refer to the installation instructions for the plug-in detector
bases for base selection and wiring instructions. System
Sensor has available a variety of detector bases for these
heat detectors, including 2-wire applications with and
without relays and/or current limiting resistors for use with
control panels that require one. These detectors are only to
be used with 400 and 400B series bases.
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
D400-54-00 1 I56-690-04
Technical Manuals Online! - http://www.tech-man.com
Install the System Sensor plug-in base to be used with the
detector following the instructions in the base manual.
Installation
NOTE: All wiring must conform to applicable installation
codes and regulations.
NOTE: Verify that all detector bases are installed, that the
initiating-device circuits have been tested, and that
the wiring is correct. (Refer to detector base
manual for testing procedure.)
Tamper-Resistance Feature
The detector bases include a feature that, when activated,
prevents removal of the detector without the use of a tool.
Refer to the installation instruction manual of the detector
base to make use of this capability.
2. After all detectors have been installed, apply power to
the control unit.
CAUTION
Disconnect the power from initiating-device circuits before
installing detectors.
1. Install Detectors:
a. Insert the detector into the detector base.
b. Turn the detector clockwise until the detector drops
into place.
c. Continue turning detector clockwise to lock it in place.
Figure 1. Test magnet position:
3. Test the detector using the magnet as described under
TESTING.
4. Reset the detector at the system control panel.
5. Notify the proper authorities the system is in operation.
D400-54-00 2 I56-690-04
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Testing
Before testing, notify the proper authorities that the heat
detector system is undergoing maintenance, and therefore
the system will temporarily be out of service. Disable the
zone or system undergoing maintenance to prevent unwanted alarms.
Detectors must be tested after installation and periodic
maintenance. Test the detector as follows:
Maintenance
The 4451HT and 4451HTA detectors have been designed to
be as maintenance-free as possible. Normal air-borne dust,
however, can accumulate on the detector’s sensing elements and cause them to become less sensitive. All detectors should be tested and cleaned at least once a year, and
those in dustier areas should be tested and cleaned more
often. Detectors must also be cleaned and tested immediately after a fire.
A. Test Magnet (System Sensor Model M02-04)
1. Position the magnet against the cover opposite the
test module socket. (See Figure 1.)
2. The LEDs on the detector should light within 10 seconds. If the LEDs fail to light, check the power to the
detector and the wiring in the detector base.
3. Reset the detector at the system control panel.
B. Test Module (System Sensor Model MOD400R)
The MOD400R is used with a DMM or voltmeter to
check the detector sensitivity as described in the
module’s manual.
C. Direct Heat Method (Heat Gun)
1. From the side of the detector, direct the heat toward
the sensor. Hold the heat source about 15 cm away to
prevent damage to the cover during testing.
Before cleaning, notify the proper authorities that the system is undergoing maintenance and therefore the system
will temporarily be out of service. Disable the loop or system undergoing maintenance to prevent unwanted alarms.
1. Remove detector from mounting base.
2. Use a vacuum cleaner to remove dust from the sensing
chamber.
3. Reinstall the detector.
4. Test the detector as described under TESTING.
CAUTION
Avoid exposing the detector cover to the heat source for
more than 15 seconds. Extended periods of extreme heat
can melt the plastic and damage the cover.
NOTE: If a detector goes into alarm, it will reset only if the
detector has cooled and if its power is momentarily
interrupted. Check the control panel being used to
determine whether the RESET switch (or some
other auxiliary device or control) momentarily cuts
off power to the detector loop.
Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.
D400-54-00 3 I56-690-04
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The Limitations of Property Protection Heat Detectors
This heat detector is designed to activate and initiate emergency action,
but will do so only when it is used in conjunction with an authorized fire
alarm system. This detector must be installed in accordance with NFPA
Standard 72.
Heat detectors will not work without power. AC or DC-powered smoke
detectors will not work if the power supply is cut off for any reason.
Heat detectors are designed to protect property, not life. They do not
provide early warning of fire and cannot detect smoke, gas, combustion
particles, or flame. They alarm when temperatures at the heat detector
reach 57°C (135°F). Given the rapid growth of certain types of fires, heat
detectors cannot be expected to provide adequate warning of fires
resulting from smoking in bed, inadequate fire protection practices,
violent explosions, escaping gas, improper storage of flammable liquids
like cleaning solvents, other safety hazards, or arson.
Three-Year Limited Warranty
System Sensor warrants its enclosed heat detector to be free from defects
in materials and workmanship under normal use and service for a period
of three years from date of manufacture. System Sensor makes no other
express warranty for this heat detector. No agent, representative, dealer, or
employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obligation of this
Warranty shall be limited to the repair or replacement of any part of the
heat detector which is found to be defective in materials or workmanship
under normal use and service during the three year period commencing
with the date of manufacture. After phoning System Sensor’s toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
WARNING
Heat detectors do not always detect fires because the fire may be a
slow-smoldering, low-heat type (producing smoke), or because they
may not be near where the fire occurs, or because the heat of the fire
may bypass them. Heat detectors will not detect smoke, gas, flames, or
combustion particles.
Heat detectors are components in professionally-installed fire alarm
systems. They will not function if they have been improperly wired
into the fire alarm system or if power to them is cut off for any reason.
Heat detectors cannot last forever. They should be tested and maintained
following the instructions in this manual. To be safe, they should be
replaced 15 years after installation.
Refer to NFPA 72 for application.
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
D400-54-00 4 I56-690-04
Technical Manuals Online! - http://www.tech-man.com
© System Sensor 1996
INSTALLATION AND MAINTENANCE INSTRUCTIONS
5451 Plug-in Rate-of-Rise
Thermal Detector with
Fixed Temperature Alarm
Specifications
Diameter: 4.1 inches (104 mm)
Height: 2.1 inches (53 mm)
Weight: 5 ounces (150 g)
Installation Temperatures: 32° to 100°F (0° to 38°C)
Operating Humidity Range: 10% to 93% Relative Humidity
Latching Alarm: Reset by momentary power interruption
Sensitivity 135°F (57°C) Fixed or 15°F/min rate-of-rise
Operating Voltage: 15-35 VDC
Standby Current: 100 µA
Before Installing
This detector must be installed in compliance with the
control panel installation manual and meet the requirements of the authority having jurisdiction. In addition, the
National Fire Protection Association has published codes,
standards, and recommended practices for the installation
and use of detectors, NFPA 72.
(For installation in Canada, refer to CAN/ULC-S524, Standard for the Installation of Fire Alarm Systems and CEC
Part 1, Sec. 32.)
General Description
Model 5451 is a rate-of-rise with fixed temperature alarm
thermal detector utilizing a state-of-the-art dual thermistor
sensing circuit. These detectors are designed to provide
open area protection with 50-foot spacing capability, and
are to be used with compatible control panels only.
Two LEDs on each detector light to provide 360° visibility
of the detector indication. Remote LED annunciator capability is provided as standard, and the RA400Z remote LED
annunciator is available as an optional accessory.
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
Therefore, the installer must be familiar with these requirements, with local codes, and any special requirements of the authority having jurisdiction.
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: This detector must be tested and maintained regularly following NFPA 72 requirements. The detector should be cleaned at least once a year.
Base Selection and Wiring Guide
Refer to the installation instructions for the plug-in detector
bases for base selection and wiring instructions. System
Sensor has available a variety of detector bases for these
heat detectors, including 2-wire applications with and
without relays and/or current limiting resistors for use with
control panels that require one. This detector is only to be
used with 400 and 400B series bases.
Install the System Sensor plug-in base to be used with the
detector following the instructions in the base manual.
D400-29-00 1 I56-580-03
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Installation
NOTE: All wiring must conform to applicable installation
codes and regulations.
NOTE: Verify that all detector bases are installed, that the
initiating-device circuits have been tested, and that
the wiring is correct. (Refer to detector base
manual for testing procedure.)
WARNING
Disconnect the power from initiating-device circuits before
installing detectors.
Tamper Resistance
The detector bases include a feature that, when activated,
prevents removal of the detector without the use of a tool.
Refer to the installation instruction manual of the detector
base to make use of this capability.
Testing
Before testing, notify the proper authorities that the heat
detector system is undergoing maintenance, and therefore
the system will temporarily be out of service. Disable the
zone or system undergoing maintenance to prevent unwanted alarms.
1. Install Detectors:
Detectors must be tested after installation and periodic
maintenance. The 5451 may be tested as follows:
a. Insert the detector into the detector base.
b. Turn the detector clockwise until the detector drops
A. Test Magnet (System Sensor Model No. M02-04)
into place.
c. Continue turning detector clockwise to lock it in
place.
2. After all detectors have been installed, apply power to
the control unit.
1. Position the magnet against the cover opposite the
test module socket. (See Figure 1.)
2. The LEDs on the detector should light within 10 seconds. If the LEDs fail to light, check the power to the
detector and the wiring in the detector base.
3. Test the detector using the magnet as described under
TESTING.
3. Reset the detector at the system control panel.
4. Reset the detector at the system control panel.
5. Notify the proper authorities that the system is in operation.
Figure 1. Bottom and Side Views Showing Position of Test Magnet:
D400-29-00 2 I56-580-03
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B. Test Module (System Sensor Model No. MOD400 or
MOD400R)
The MOD400 or MOD400R is used with a DMM or volt
meter to check the detector sensitivity as described in
the module’s manual.
C. Direct Heat Method (Hair dryer of 1000 - 1500 watts)
Maintenance
The 5451 detector has been designed to be as maintenancefree as possible. Normal air-borne dust, however, can accumulate on the detector’s sensing elements and cause them
to become less sensitive. All detectors should be tested and
cleaned at least once a year, and those in dustier areas
should be tested and cleaned more often. Detectors must
also be cleaned and tested immediately after a fire.
From the side of the detector, direct the heat toward the
sensor. Hold the heat source about 15 cm away to prevent damage to the cover during testing.
NOTE: If a detector goes into alarm, it will reset only if the
detector has cooled and if its power is momentarily
interrupted. Check the control panel being used to
determine whether the RESET switch (or some
other auxiliary device or control) momentarily cuts
off power to the detector loop.
Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.
Before cleaning, notify the proper authorities that the system is undergoing maintenance and therefore the system
will temporarily be out of service. Disable the loop or system undergoing maintenance to prevent unwanted alarms.
1. Remove detector from mounting base.
2. Use a vacuum cleaner to remove dust from the sensing
chamber.
3. Reinstall the detector.
4. Test detector as described under TESTING.
D400-29-00 3 I56-580-03
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WARNING
The Limitations of Property Protection Heat Detectors
This heat detector is designed to activate and initiate emergency action,
but will do so only when it is used in conjunction with an authorized fire
alarm system. This detector must be installed in accordance with NFPA
Standard 72.
Heat detectors will not work without power. AC or DC-powered smoke
detectors will not work if the power supply is cut off for any reason.
Heat detectors are designed to protect property, not life. They do not
provide early warning of fire and cannot detect smoke, gas, combustion
particles, or flame. They alarm when temperatures at the heat detector
reach 57°C (135°F). Given the rapid growth of certain types of fires, heat
detectors cannot be expected to provide adequate warning of fires
resulting from smoking in bed, inadequate fire protection practices,
violent explosions, escaping gas, improper storage of flammable liquids
like cleaning solvents, other safety hazards, or arson.
Three-Year Limited Warranty
System Sensor warrants its enclosed heat detector to be free from defects
in materials and workmanship under normal use and service for a period
of three years from date of manufacture. System Sensor makes no other
express warranty for this heat detector. No agent, representative, dealer, or
employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obligation of this
Warranty shall be limited to the repair or replacement of any part of the
heat detector which is found to be defective in materials or workmanship
under normal use and service during the three year period commencing
with the date of manufacture. After phoning System Sensor’s toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart-
Heat detectors do not always detect fires because the fire may be a
slow-smoldering, low-heat type (producing smoke), or because they
may not be near where the fire occurs, or because the heat of the fire
may bypass them. Heat detectors will not detect smoke, gas, flames, or
combustion particles.
Heat detectors are components in professionally installed fire alarm
systems. They will not function if they have been improperly wired
into the fire alarm system or if power to them is cut off for any reason.
Heat detectors cannot last forever. They should be tested and maintained
following the instructions in this manual. To be safe, they should be
replaced after they have been installed for 15 years.
Refer to NFPA 72 for application.
ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifications, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
D400-29-00 4 I56-580-03
Technical Manuals Online! - http://www.tech-man.com
© System Sensor 1996
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