Microm 1451B-A User manual

2 & 4 WIRE IONIZATION SMOKE DETECTOR 1451B-A
Description
The Mircom 1451B-A ionization smoke detectors
respond quickly to both fast flaming and slow
smouldering fires are required by UL268. Unipolar
dual chamber sensor has the sensitivity needed to
quickly detect smoke, and the stability needed to
avoid false alarms.
Features
Unique dual unipolar sensor• Provides exceptional stability• Factory preset at 1.9% nominal sensitivity• Stable operation up to 1,200 feet per minute (6• meters per second) air velocities
Removable cover for field cleaning• Two visible LED “blink” in standby• Sealed against dirt, insects and back pressure• 3 year Limited Warranty• Field adjustable sensitivity• Field metering of detector sensitivity• Built-in test switch• Low standby current• Built-in tamper-resistant feature• Designed for direct surface or electrical box• mounting
360°fieldviewingangleofthevisualalarmLEDs• Insect-resistant screening (0.020”/0.508mm• openings)
Easy plug-in of the head to base• SEMS screws for easy wiring• Optional recess mounting•
Mircom reserves the right to make changes at any time without notice in prices, colours, materials, components, equipment, specifications and models and also to discontinue models.
Installation
Maximum number of detectors per zone is listed in
the installation manual for each control panel. Easy
to install and maintain, this detector is designed
for direct surface mounting (using one of the B400
Series bases listed below). Easy-to-wire screw
terminalsallowfastandsimplefieldwiringofIN,OUT
and remote annunciator connections.
Consult Mircom control panel specifications for the
maximumallowableloopresistancefortheparticular
control panel to be used.
To prevent wiring mistakes, observe polarities and
make certain that each conductor is identifiable. A
copy of Installation and Maintenance Instructions is
packagedwith eachdetector. Forfurtherinformation,
refer to NFPA 72E “Standard on Automatic Fire
Detectors.”
Application
Use for protection of life and property. Superior
to photoelectric detectors in detecting fast flaming
fires. Superior to bipolar detectors in avoiding false
flames.
5105
NOT TO BE USED FOR INSTALLATION PURPOSES.
MEA
approved
APPROVED
CATALOG NUMBER

REMOVABLE COVER
FOR CLEANING
REMOVABLE SCREEN
(P/N RS14)
LOCK PRONG
SENSING CHAMBER
Canada
25 Interchange Way
Vaughan, Ontario L4K 5W3
Telephone: [phone]
Fax: [phone]
Web page: http://www.mircom.com Email: [email protected]
Distributed by:
CAT. 5105
Rev. 5
Architects/Engineer Specifications
Operating Voltage: Mounting Base Dependent
Standby Current: 120 micro amps
Sensitivity: 1.9% nominal
Weight: 0.5 pounds (277 grams)
Size: 2.4”/6 mm high
4.0”103 mm diameter
(6.2”/158 mm diameter with
flanged bases).
1451 Ionization detector. Must be mounted to one of the B400 Series Bases listed.
RA-400Z Remote annunciator for 2 or 4 wire applications. Use with any System Sensor 400 series plug-in
detector. Fits standard single-gang electrical box.
MOD400R Field test module for all of the System Sensor 400 Series Smoke Detectors.
General Specifications
Ordering Information
All 1451B-A ionization smoke detectors contain a
uniquedualsource,dualunipolarchamberdetection
design which will sense the presence of smoke
particlesproduced byfastcombustionas wellasslow
smouldering fires. Additional key features include
a blinking LED standby status indicator, an easily
visible alarm indication and provision for convenient
field test and metering
The back of the detector is sealed to block back
pressureairflow. Thechamber is protectedbyafine
mesh(0.20”/0.508mm)screentominimizeproblems
with dust, dirt and insects. If cleaning is required, it
is easy to remove the cover (with a special tool) and
obtainaccess to the screen andchamber to perform
a thorough cleaning.
Base Model Loop Current Contact Standby Current Draw
Number Version Type Limit Resistor Type Voltage or Alarm
B401B-A UL & ULC 2-wire No - 8.5 to 35 VDC 10 to 100 mA*
B406B-A UL & ULC 2-wire No Form C 15 to 35 VDC 12 to 100*
* Limited by control panel
Relay Contact Ratings on the B406B base: Resistive or Inductive (60% power factor) load.
Form A: 2.0 amps @ 30 VAC/DC
Form C: 0.6 amps @ 110 VAC, 2.0 amps @ 30 VDC.
1.0 amps @ 125 VAC, 2.0 amps @ 30 VAC.
Construction: Flame retardant
white Noryl7plastic
Temperature: 32°to 120°F
(0 to 49°C)
Humidity Range: 10 to 93% R.H.
(non-condensing)
Maximum air 1,200 feet per minute
velocity: (6 meters per second)
NOT TO BE USED FOR INSTALLATION PURPOSES.
U.S.A.
4575 Witmer Industrial Estates
Niagara Falls, NY 14305
Toll Free: [phone]
Fax Toll Free: [phone]