2-wire photoelectric smoke detector mir-2400a

2-WIRE PHOTOELECTRIC SMOKE DETECTOR
MIR-2400A
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Unique optical sensing chamber
Superior signal-to-noise ratio
Built-in signal processing
3.0% nominal sensitivity
Removable cover for field cleaning
Visible LED “blinks” in standby
Sealed against dirt, insects and back pressure
3 year warranty
8.5-35 VDC operating range
Field metering of detector sensitivity
Built-in test capability
Low standby current
Twist-on mounting bracket with tamper option
Designed for direct surface or electrical box
mounting
Insect-resistant screening
SEMS screws for easy wiring
Application
Description
The MIR-2400A photoelectric type smoke detector is
specially designed to meet the stringent performance
requirements of industrial and municipal fire detection/
alarm systems. The design of the detector emphasizes
ease of installation and field maintenance.
All MIR-2400A photoelectric smoke detectors contain a
unique optical sensing chamber designed to sense the
presence of smoke particles produced by a wide range
of combustion sources and meet the performance
criteria designated by ULC. A new custom integrated
circuit incorporates signal processing to reduce false
alarms and sample/hold circuitry to provide easy field
metering of sensitivity.
The MIR-2400A photoelectric detector is designed
to be compatible with all Mircom Fire Alarm Control
Panels. See Installation manual for panel to determine
maximum number of detectors per zone. Easy to
install and maintain, this detector is designed for direct
surface mounting (mounting bracket included), or
mounting to a 4” octagon or smaller box. Easy-to-wire
screw terminals allow fast and simple field wiring of
in, out and remote annunciator connections.
Use for protection of life and property. Photoelectric
detectors are recommended in areas where slow
smouldering fires are likely to ignite. In areas where
small combustion particles are usually present from
fork-lift trucks, cooking stoves, etc., they are less likely
than ionization detectors to produce false alarms.
The MIR-2400A has been designed to seal the sensing
chamber from back pressure air flow, dust, dirt, and
insects. The back of the detector is sealed and the
chamber is protected by a fine mesh (.20”/.508 mm)
screen. If cleaning is required, it is easy to remove
the cover (with a tool) and obtain access to the screen
and chamber to perform a thorough cleaning.
Architect/Engineer Specifications
The detector shall be of the photoelectric type. The
detector shall have a nominal sensitivity as measured
in a ULC smoke box, and a signal to noise ratio of
2.0 nominal. It shall be possible to perform calibrated
sensitivity and functional operating tests on the
detector without generating an aerosol. Functional
testing will exercise the sensing chamber, and critical
operating circuits.
S6965
CATALOG NUMBER
NOT TO BE USED FOR INSTALLATION PURPOSES.
5126
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.
Architects/Engineer Specifications
The detector shall incorporate a solid stage voltage
regulator which can maintain detection sensitivity over
an input voltage range of 8.5-35.0 VDC. Standby
current shall be no more than 120 microamperes.
The detector shall be protected against power
surges and noise immunity circuitry shall protect
the detector so that it can be wired without shielded
circuit conductors or conduit, where codes allow.
The detector will operate without regard for input
voltage polarity.
The detector shall have a mounting bracket with a
built-in tamper resistant feature. The bracket shall
allow for direct surface mounting or mounting to a 3
1/2” or 4” octagon box.
Metering points for the test shall be accessible on the
exterior of the detector. Sensitivity shall be verifiable
without affecting the normal operation of the detector,
and without causing alarm actuation.
The detector shall be listed for normal operation in
sustained velocities of up to 3000 feet per minute.
The detector shall have a .20” opening insect screen,
and shall be easily disassembled for field cleaning
and inspection. Wire connections are made by
clamping plate and screw. The detector shall be
supplied by Mircom.
REMOVABLE HEAD COVER
A visual indication of an alarm shall be provided by
a latching light emitting diode (LED) on the detector
which may be seen at ground level. It shall flash
every ten seconds indicating that power is applied to
the detector, and that the sensitivity of the detector
is greater than 6% grey smoke per foot. The visible
alarm signal shall be capable of remote LED
annunciation.
A special test module shall be available to precisely
verify the calibration and sensitivity of the detector
to within its labelled operating range.
TEST SLOT
CLEANABLE SCREEN
P/N RS24 (W/O THERMAL)
HEAD COVER
REMOVAL SLOT
VANED CHAMBER
General Specifications
Control Panel Applications .............................................................................................................................................2-wire
Built-in Thermal...................................................................................................................................................................NO
Visual LED Local Alarm............................................................................................................................................................
YES
Remote LED Annunciator Capacity...................................................................................................................................YES
Operating Voltage Range.......................................................................................................................................8.6-35VDC
Current Limits
a) Standby (max.).......................................................................................................................................................120mA
b) Alarm Current (typical)..................................................................................................................................See NOTE 1
c) Alarm Current (maximum).............................................................................................................................See NOTE 1
Reversed Voltage (non-alarm)
Alarm Signal..........................................................................................................................................Shunt on power leads
Notes
1) Control panels must limit current to 100 mA or less
2) Max. air velocity for photoelectric sensor operation is 3000 feet per minute
3) Relative humidity range: 10 to 93% (non-condensing)
Ordering Information
Model
MIR-2400A
MOD400
RA-400Z
DUST-45
Description
Photoelectric detector, 2-wire, surface mount
Field test module for all of the 2400 series smoke detectors
Remote annunciator (LED)
Protective Dust Cover
NOT TO BE USED FOR INSTALLATION PURPOSES.
Distributed by:
Canada
25 Interchange Way
Vaughan, Ontario L4K 5W3
Telephone: (905) 660-4655
Fax: (905) 660-4113
Web page: http://www.mircom.com
U.S.A.
60 Industrial Parkway
Cheektowaga, New York 14227
Toll Free: (888) 660-4655
Fax Toll Free: (888) 660-4113
Email: mail@mircom.com
ISO 9001:2000
REGISTERED
CAT. 5126
Rev. 4
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