I56-2631-007
D400-50-00
Pittway Tecnologica S.r.l, Via Caboto 19/3, 34147 Trieste, Italy
72 mm
102 mm
B401
5451EIS
0832-CPD-0283 06
-10°C
40°C
277 g
PAINTED
SURFACE
TEST
MAGNET
TEST
MAGNET
LED
LED
TEST MODULE
SOCKET
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FOR MODEL 5451EIS INTRINSICALLY SAFE
RATE-OF-RISE / FIXED THERMAL SENSOR
Before installing the sensor, please thoroughly read System Sensor’s Guide to
Conventional Fire Systems. This manual includes detailed information on sensor spacing,
placement, zoning, and special applications. Copies of this manual are available at no
charge from System Sensor.
GENERAL DESCRIPTION
Model 5451EIS is an intrinsically safe rate-of-rise / 58
o
C fixed temperature thermal
sensor utilizing a state-of-the-art dual thermistor sensing circuit. These sensors are
designed to provide open area protection and are for use in hazardous areas where
potentially explosive atmospheres and non-conductive dust are likely to arise. The
classification of equipment required must be confirmed with your responsible authority.
The sensors are designed to be used with compatible panels only and must be used
in conjunction with a compatible zener barrier or galvanic isolator.
Two LEDs on each sensor light to provide a local 360° visible alarm indication. Remote
LED annunciator capability is available as an optional accessory wired to the standard
base terminals. These sensors also have a latching alarm feature. The alarm can be
reset only by a momentary power interruption. These sensors may be tested by activating
an internal reed switch with a magnet.
SPECIFICATIONS
Operating Humidity Range:
10% to 93% Relative Humidity, Non-condensing
Intrinsic Safety Rating:
II 1 GD
Latching Alarm:
Reset by momentary power interruption.
This sensor has been independently tested and certified to EN54 part 5 Class A1R
and BASEEFA approved for intrinsic safety.
COVERAGE
As a general guide, the sensor should provide adequate protection of an area 70-90m²,
where the ceiling is smooth and there is no significant air movement. Where installation
conditions or response requirements vary, different spacing may be necessary. It is
essential to consult local codes of practice for the installation of fire alarm systems
before installing thermal sensors.
BASE SELECTION AND WIRING GUIDE
Refer to the installation instructions supplied with the plug-in sensor bases for wiring
details. System Sensor bases B401 and B401DG are available for this sensor.
All bases are provided with screw terminals for power and remote indicator connections.
The electrical ratings for each sensor-base combination are also included in the base
installation instructions.
NOTE:
All wiring must conform to applicable local and national codes and regulations.
NOTE:
Verify that all sensor bases are installed, that the sensor monitoring circuits have
been tested and that the wiring is correct. (Refer to sensor base instructions
for testing procedure)
WARNING
Remove power from sensor monitoring circuits before installing sensors
INSTALLATION
1. Place the sensor into the base.
2. Rotate the sensor clockwise with gentle pressure until it drops into place.
3. Continue rotating the sensor clockwise to lock it in place.
4. After all sensors have been installed, apply power to the sensor monitoring circuits.
5. Test the sensor as described under
TESTING.
6. Reset the sensor at the system control panel.
7. Notify the proper authorities that the system is in operation.
Tamper-Resistance
The sensor bases include a feature that, when activated, prevents removal of the
sensor without the use of a tool. See the installation instructions for the sensor base
for details of how to use this feature.
CAUTION
Dust covers are fitted to the sensors to help protect units during shipment
and when first installed. They are not intended to provide complete protection
against contamination; therefore sensors should be removed before beginning
construction, major re-decoration or other dust producing activity. Dust covers
must be removed before the system can be made operational.
Figure 1: Test Magnet Position
Calibrated Sensitivity Test (MOD400R)
IMPORTANT: MOD400R is not intrinsically safe - the test must be conducted
outside the hazardous area.
1. Use the MOD400R Test Module with a digital or analogue voltmeter to check sensor
sensitivity as described in the test module manual.
Direct Heat Method (Hair dryer of 1000-1500 watts)
IMPORTANT: This method is not intrinsically safe - the test must be conducted
outside the hazardous area
1. From the side of the sensor, direct the heat toward the sensor. Hold the heat
source about 15cm away to prevent damage to the cover during testing. Note: If a
sensor goes into alarm, it will only reset if the sensor 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 line of sensors.
After completion of all tests notify the proper authorities that the system is operational.
Sensors that fail these tests should be cleaned as described under
MAINTENANCE
and re-tested.
CAUTION
The Detector has a plastic enclosure that may present an electrostatic risk and
must not be installed in a position where it may be subject to a high dust-laden
air flow. Clean only with a damp cloth and do not rub.
WARNING
LIMITATIONS OF HEAT SENSORS
Heat sensors are designed to protect property, not life.
They do not provide early
warning of fire and cannot detect smoke, gas, combustion particles or flame. The
5451EIS alarms when temperature at the heat sensor reaches 58°C. Given the rapid
growth of certain types of fire, heat sensors 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.
Heat sensors do not always detect fires because the fire may be a slow
smouldering, 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
sensors will not detect smoke, gas, flames or combustion particles.
Heat sensors 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 for any reason.
Heat sensors 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 10 years.
ENGLISH
MAINTENANCE
Before cleaning, disable the system to prevent unwanted alarms:
1. Remove the sensor to be cleaned from the system.
2 Use a vacuum cleaner and/or clean, compressed air to remove dust and debris from
the thermistor and sensor cover.
3. Replace the sensor into the base.
4. When all sensors have been cleaned, restore power to the system and test the
sensor(s) as described under
TESTING
.
TESTING
Sensors must be tested after installation and following periodic maintenance. Disable
the zone or system undergoing maintenance to prevent unwanted alarms.
IMPORTANT: If testing is carried out using non-intrinsically safe methods, it
must be conducted outside the hazardous area.
Test the sensor as follows:
Test Magnet (Model M02-04-00 - optional)
1. Test the sensor by positioning the test magnet against the sensor body approximately
2cm from LED1 in the direction of the metering socket (see Figure 1).
2. Both LEDs should latch on within 30 seconds, indicating an alarm and activating
the panel.
