
INSTALLATION AND MAINTENANCE INSTRUCTIONS
EDW2151A Low Profile
Photoelectronic Plug-in
Smoke Detector
Specications
Size
Height: 2.0 inches (51 mm) installed in B401A Base
Diameter: 4.1 inches (104 mm) installed in B401A Base
6.1 inches (155 mm) installed in B110LPA Base
Weight: 3.1 oz. (88 g)
Operating Temperature Range: 0°C to 49°C (32°F to 120°F)
Operating Humidity Range: 10% to 93% Relative Humidity noncondensing
Operating Voltage 8.5 to 35VDC
Standby Current 120 uA
Latching Alarm: Reset by momentary power interruption.
625 6th Street East, Owen Sound, Ontario N4K-5P8
TEL:519-376-2430, FAX: 519-376-1296
Before Installing
Please thoroughly read the manual A05-1003, Applications Guide for System Smoke Detectors, which provides
detailed information on detector spacing, placement, zoning, wiring, and special applications. Copies of this manual
are available from Edwards.
NOTICE: This manual should be left with the owner/user
of this equipment.
IMPORTANT: The detector must be tested and maintained
regularly following CAN/ULC S536 requirements. The detector should be cleaned at least once a year.
General Description
The EDW2151A low-prole photoelectronic detector uses
a state-of-the-art optical sensing chamber. This detector is
designed to provide open area protection and to be used
with compatible ULC listed control panels only. The capability of plugging this detector into a variety of special
bases makes it more versatile than equivalent direct-wired
models.
Two LEDs on each detector provide local 360° visible
alarm indication. They ash every ve seconds indicating
that power is applied and the detector is working properly.
The LEDs latch on in alarm. Remote LED annunciator capability is standard and may be implemented through an
optional accessory RA100ZA. The alarm can be reset only
by a momentary power interruption. This detector may be
tested by activating the internal reed switch with a magnet,
or by using the CSENS-RDRA infrared sensitivity reader.
Base Selection And Wiring Guide
Refer to the installation instructions for the Plug-in Detector
Bases for base selection and wiring instructions. Edwards
has a variety of detector bases available for this smoke
detector, including 2-wire applications with and without relays and/or current limiting resistors, 4-wire and 120VAC
D100-101-00 1 I56-1580-000
applications.
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
Installation shall comply with the latest version of CAN/
ULC S524, Installation of Fire Alarm Systems.
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. (Refer to detector base manual for
testing procedure.)
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 Resistance: The detector bases can be made
tamper resistant. When capability is enabled, detectors
cannot be removed from the base without the use of a
tool. See the detector base installation manual of the
detector base for details in using this capability.
3. After all detectors have been installed, apply power to

the control unit.
LED Status
Indicators
Magnet Test
Marker
Test Magnet
Position
Test Magnet
Position
Magnet Test
Marker
CSENS-RDRA
Location
4. Test the detector using the magnet 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.
Dust covers are an effective way to limit the entry of dust
into smoke detector sensing chambers. However, they
may not completely prevent airborne dust particles from
entering the detector. Therefore, Edwards recommends
the removal of detectors before beginning construction or
other dust producing activity.
Be sure to remove the dust covers from any sensors that
were left in place during construction as part of returning
the system to service.
Smoke detectors are not to be used with detector guards
unless the combination has been evaluated and found
suitable for that purpose.
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 as part of periodic maintenance. Test EDW2151A as follows:
NOTE: Before testing the detector, check to ensure the
LEDs blink. If they do not, the detector has lost power
(check the wiring) or it is defective (return it for repair).
A. Test Magnet (p/n M02-04-01 or M02-09-00)
1. Place the magnet against the cover in the location
designated by the raised mark to activate the test feature (see Figure 1).
2. The LEDs should latch ON within 5 seconds indicating alarm and annunciating the panel.
B. Test Module (CSENS-RDRA)
Use the CSENS-RDRA Sensitivity reader to measure
the sensitivity of the detectors. Please refer to the
CSENS-RDRA instruction manual for operating details.
B. Aerosol Generator (Gemini 501)
Set the generator to represent 4% to 5%/ft. obscura-
tion 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.
Cleaning
Before removing the detector, notify the proper authorities
that the smoke detector system is undergoing maintenance
and will be temporarily out of service. Disable the zone or
system undergoing maintenance to prevent unwanted
alarms.
Figure 1. Bottom and side views showing position of test magnet:
D100-101-00 2 I56-1580-000
C0145-00