System Sensor 2D51A Installation And Maintenance Instructions Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

WA RNING

CAUTION

2D51A Photoelectric Smoke Detector
for use with Innovair Flex 4-Wire Duct
Smoke Detector Housings

SPECIFICATIONS

Height: 2.0 in
Diameter: 4.1 in; 6.1 in
Weight: 3.1 oz. (88 g)
Operating Temperature Range: –20°C to 70°C (–4°F to 158°F)
Operating Humidity Range: 0% to 95% Relative Humidity Non-condensing
Latching Alarm: Reset by momentary power interruption

BEFORE INSTALLING

Please thoroughly read the System Sensor 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 System Sensor.

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 2D51A photoelectronic detector uses a state-of-the-art optical sensing
chamber. This detector is designed to provide protection in duct applications
when installed with an Innovair Flex 4-wire duct smoke detector housing and
to be used with ULC listed control panels only.

Two LEDs on each detector provide local visible alarm indication. Refer to
Table 3 of the Model D4120A installation manual for LED status indications.
Remote LED annunciator capability is standard and may be implemented
through a number of optional accessories. See applicable Innovair Flex duct
smoke detector installation manual for more information.. 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.

BASE SELECTION AND WIRING GUIDE

Refer to the applicable Innovair Flex 4-wire duct smoke detector installation
instructions for detector head and wiring instructions.

INSTALLATION
NOTE: All wiring must conform to applicable local codes, ordinances, and

regulations.

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.

4. Test the detector using the magnet as described under TESTING.

5. Reset the detector at the system control panel or on power board.

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, System Sensor recommends the
removal of detectors before beginning construction or other dust producing activ­ity.

SS-300-017 1 I56-3328-000

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.

TESTING

Before testing, notify the proper authorities that the smoke detector system
is undergoing maintenance and will temporarily be out of service. Detectors
must be tested after installation and as part of periodic maintenance. Test the
2D51A as follows:

NOTE: Before testing the detector, check to ensure the the power board
LEDs blink. If they do not, the detector may not have power or may not be
installed properly (check the wiring), if it is defective, or the detector sensitiv­ity is outside the listed limits return it for repair.

ALARM TESTS

1a. Test/Reset Button - Press and hold the test button located on the power

board cover for at least 2 seconds.

OR

1b. M02-04-00 Magnet Test - Place the painted surface of the magnet onto

the MAGNET TEST location on the sensor cover of unit (Figure 1).

2. The red alarm LED on the sensor and the power board should latch
on, as should any accessories (i.e. RA400ZA, RTS451). Verify system
control panel alarm status and control panel execution of all intended
auxiliary functions (i.e fan shutdown, damper control, etc.).

3. The detector must be reset by the system control panel, front cover Test/
Reset button, or remote accessory.

4. To reset using the Test/Reset button on the power board cover simply
press and release.

RTS451/RTS451KEYA REMOTE TEST STATION

The RTS451/RTS451KEYA Remote Test Station facilitates test of the alarm
capability of the duct smoke detector as indicated in the RTS451/RTS­451KEYA manual. The D4120A duct smoke detector can be reset by the
RTS451/RTS451KEYA. If a system control panel is used, the panel itself may
also require testing.

To install the RTS451/RTS451KEYA, connect the device as shown in the
manual provided with the accessory; wire runs must be limited to 25 ohms or
less per interconnecting wire.

SMOKE RESPONSE TESTS

To determine if smoke is capable of entering the sensing chamber, visually
identify any obstructions. Plug the exhaust and sampling tube holes to pre­vent ducted air from carrying smoke away from the detector head, then blow
smoke such as cigarette, cotton wick, or punk directly at the head to cause an
alarm. REMEMBER TO REMOVE THE PLUGS AFTER THIS TEST, OR THE
DETECTOR WILL NOT FUNCTION PROPERLY.

SMOKE ENTRY USING AEROSOL SMOKE

This test is intended for low-flow systems (100-500 FPM). If the air speed is
greater than 500 FPM, use a conventional manometer to measure differen­tial pressure between the sampling tubes, as described per the installation
manual provided with the duct smoke detector.

Drill a 1⁄4 inch hole 3 feet upstream from the duct smoke detector. With the air
handler on, measure the air velocity with an anemometer. Air speed must be
at least 100 FPM. Spray aerosol smoke* into the duct through the 1⁄4 inch hole

6581 Kitimat Road, Unit 6, Mississauga, Ontario L5N-3T5

1-800-SENSOR2, FAX: [phone]

www.systemsensor.ca

CAUTION

FIGURE 1. CO-LOCATED INNOVAIR FLEX DUCT SMOKE DETECTOR:

SENSOR UNIT

TEST MAGNET

POSITION

LED STATUS INDICATORS

POWER BOARD UNIT

SENSOR
COVER

SENSING
CHAMBER
COVER AND
SCREEN

SENSOR
CHAMBER

COVER
REMOVAL
TABS

for five seconds. Wait two minutes for the duct smoke detector to alarm. If the
duct smoke detector alarms, air is flowing through the detector. Remove the
duct smoke detector cover and blow out the residual aerosol smoke from the
chamber and reset the duct smoke detector. Use duct tape to seal the aerosol
smoke entry hole.

*Aerosol smoke can be purchased from Home Safeguard Industries, model
25S Smoke Detector Tester, Malibu, CA. Phone: [phone]. When used
properly, the canned smoke agent will cause the smoke detector to go into
alarm. Refer to the manufacturer’s published instructions for proper use of
the canned smoke agent.

Canned aerosol simulated smoke (canned smoke agent) formulas will vary
by manufacturer. Misuse or overuse to these products may have long term
adverse effects on the smoke detector. Consult the canned smoke agent
manufacturer’s published instructions for any further warnings or caution
statements.

SENSITIVITY VERIFICATION

The sensitivity of the sensor is confirmed to be operating within its allowable
range each time the sensor and power board LEDs blink every 5 seconds.
Note in a maintenance condition the sensor LEDs will blink red every 5 sec­onds and power board will blink amber. The maintenance condition indicates
that the sensor is operating outside its original factory preset sensitivity and
shall be cleaned or replaced. This is a valid UL test.

Notify the proper authorities that the system is back on line.

Detectors that fail these tests should be cleaned as described below 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.

1. Remove the sensor to be cleaned from the system.

2. Remove the sensor cover by pressing firmly on each of the four removal
tabs that hold the cover in place.

3. Vacuum the screen carefully without removing it. If further cleaning is
required continue with Step 4, otherwise skip to Step 7.

4. Remove the chamber cover/screen assembly by pulling it straight out.

H0614-00

5. Use a vacuum cleaner or compressed air to remove dust and debris
from the sensing chamber.

6. Reinstall the chamber cover/screen assembly by sliding the edge over
the sensing chamber. Turn until it is firmly in place.

7. Replace the cover using the LEDs to align the cover and then gently
pushing it until it locks into place.

8. Reinstall the detector.

REINSTALLATION

1. Reinstall the detector in its housing.

2. Restore system power.

3. Perform Detector Check.

4. Notify the proper authorities testing has been completed and the smoke
detector system is back in operation.

FIGURE 2:

C1009-00

Please refer to insert for the Limitations of Fire Alarm Systems

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

SS-300-017 2 I56-3328-000
©2008 System Sensor

THREE-YEAR LIMITED WARRANTY

Department, RA #__________, 6581 Kitimat Road, Unit 6, Mississauga, Ontario L5N-3T5.
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.