Edwards EDC-M9102 - User Manual

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30311161 Issue 1.01

Features

 Reed switch testing

 Drift sensitivity, suit to environment extensively.

 Removable innovative sensing chamber, easy for maintenance.

 The fire LED allows 360°viewing.

 Providing alarm output terminal connecting with remote

indicator.

 Complying with UL 268

Description

EDC-M9102 Conventional Photoelectric Smoke Detector (the

detector) is a new-generation product by building in a

microprocessor, embedding a solid fire analyzing program, and

performing effectively and efficiently.

Checking a fire alarm signal, the detector will send it to a fire alarm

control panel (FACP) or addressable zone monitor unit by means of

current changes. The detector indicates its fire condition by turning

on fire LED and keeping the LED on until it is reset.

Using infrared scattering technology, with an innovative chamber,

the detector receives very weak infrared light under normal

smokeless condition. If smoke particles enter the chamber, the

received light signal will increase by scattering. When smoke

density reaches certain density, the detector will output fire signal. In

order to reduce interference and power consumption, the emitting

circuit works in pulse mode to prolong the life of IR LED.

Connection and cabling

Cable Entry

Mounting

Hole

Fig. 1 Fig. 2

Please install the base according to the following steps:

1) Locate the mounting holes on the rubber seal of the base

according to the holes on the electrical junction box, and

punch the holes with a screwdriver.

2) Count the number of cables needed and punch correct

number of holes with a screwdriver on the rubber seal at the

cable entry position. Thread the cables through the cable

entry holes.

3) Install the base onto the junction box with screws.

Warning: Do not punch mounting holes and cable entry holes

bigger than needed. Do not punch more holes than needed.

There are four terminals with numbers on the base.

1: Detection zone positive IN

2: Detection zone positive OUT

3: Detection zone negative IN and OUT

2: Positive terminal of alarm output

4: Negative terminal of alarm output

Refer to respective Module/FACP Installation sheets for the

wiring connections

O-

O+

Conventional Detector

EOL Resistor

Conventional Detector

Fig. 3

Recommended Wiring

1.0mm

or above fire cable for all terminals laid through metal conduit

or flame proof conduit, subject to local codes.

Note: Different color cables are used to avoid wiring mistake.

Up to 25 conventional devices can be connected to a

module/FACP. See next page, compatibility section, for

detector capacity per circuit

Installation

Refer to D Series Detector Application Bulletin for additional installation

instructions.

Fix the base with two taping screws. Then align A (Fig.1) on the

bottom of the detector to B (Fig.2) of the base, and rotate the

detector clockwise to mark C.

Mounting of the detector is shown in Fig.4.

Electrical Box

Conduit

Orientation Base

Detector

54.5mm

Fig. 4

Warning: The alarm current depends on the current limit of the

control panel. 24VDC cannot power the detector directly.

Otherwise the detector will be blown up for lack of current limit

resistor.

Testing

Before testing, please ensure that the detector has been

installed correctly and powered up. After 10 seconds, testing

can begin.

Before testing, notify the proper authorities that the system is

undergoing maintenance and will temporarily be out of service.

Disable the zone or system undergoing maintenance to avoid

unwanted alarms.

All detectors must be tested after installation and periodically

thereafter. Testing methods must satisfy the Authority Having

Jurisdiction (AHJ). Detectors offer maximum performance when

tested and maintained in compliance with NFPA 72. The detector

can be tested in the following way:

9102

Conventional Photoelectric

Smoke

Detector

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Summary

Connection and Cabling

Base Installation Steps

Instructions for mounting the base, including hole punching and securing to the junction box.

Terminal Identification and Wiring

Details the four terminals on the base and their connection purposes for detection zone and alarm output.

Wiring and Installation Guidance

Recommended Wiring Specifications

Specifies minimum cable size and notes on avoiding wiring mistakes for conventional devices.

Detector Mounting Procedure

Describes how to fix the base to the electrical box and rotate the detector onto the base.

Testing Procedures

Testing Preparation and Notification

Ensures the detector is installed and powered, and authorities are notified of system maintenance.

Smoke Entry Testing Methods

Details using a magnet (reed switch) and aerosol testers for smoke entry and alarm verification.

Post-Testing System Restore

Covers cutting power, resetting the detector, and restoring the system to normal operation.

Maintenance and Cautions

Annual Detector Cleaning

Provides steps for cleaning the sensing chamber using vacuum or compressed air, and water if needed.

Operational Cautions

Highlights warnings regarding dust covers, detector limitations, and fire scenarios not detected.

Regular Testing and Service Life

Emphasizes the need for annual testing and maintaining detectors according to standards for their service life.

Specifications

Electrical and Environmental Ratings

Lists operating voltage, current draw, temperature, humidity, and ingress protection ratings.

Physical and Compatibility Data

Details dimensions, mounting spacing, weight, and compatibility with specific control panels.

Summary

Connection and Cabling

Base Installation Steps

Instructions for mounting the base, including hole punching and securing to the junction box.

Terminal Identification and Wiring

Details the four terminals on the base and their connection purposes for detection zone and alarm output.

Wiring and Installation Guidance

Recommended Wiring Specifications

Specifies minimum cable size and notes on avoiding wiring mistakes for conventional devices.

Detector Mounting Procedure

Describes how to fix the base to the electrical box and rotate the detector onto the base.

Testing Procedures

Testing Preparation and Notification

Ensures the detector is installed and powered, and authorities are notified of system maintenance.

Smoke Entry Testing Methods

Details using a magnet (reed switch) and aerosol testers for smoke entry and alarm verification.

Post-Testing System Restore

Covers cutting power, resetting the detector, and restoring the system to normal operation.

Maintenance and Cautions

Annual Detector Cleaning

Provides steps for cleaning the sensing chamber using vacuum or compressed air, and water if needed.

Operational Cautions

Highlights warnings regarding dust covers, detector limitations, and fire scenarios not detected.

Regular Testing and Service Life

Emphasizes the need for annual testing and maintaining detectors according to standards for their service life.

Specifications

Electrical and Environmental Ratings

Lists operating voltage, current draw, temperature, humidity, and ingress protection ratings.

Physical and Compatibility Data

Details dimensions, mounting spacing, weight, and compatibility with specific control panels.

The EDC-M9102 Conventional Photoelectric Smoke Detector is a new-generation device designed for effective and efficient fire detection. It incorporates a microprocessor with a solid fire analyzing program, utilizing infrared scattering technology within an innovative chamber. The detector operates by sensing very weak infrared light under normal, smokeless conditions. When smoke particles enter the chamber, the received light signal increases due to scattering. Upon reaching a certain smoke density, the detector outputs a fire signal. To minimize interference and power consumption, the emitting circuit operates in a pulse mode, extending the life of the IR LED.

Function Description

The detector checks for fire alarm signals and transmits them to a fire alarm control panel (FACP) or an addressable zone monitor unit via current changes. Its fire condition is indicated by a 360° viewable fire LED, which illuminates upon alarm and remains on until reset. The device is designed to comply with UL 268 standards.

Important Technical Specifications

Operating Voltage: 16VDC ~ 28VDC
Standby Current: <60μA
Alarm Current: <55mA
Fire LED: Red, periodically flashes once in polling; flashes twice in fault or when the sensing chamber is dirty; illuminates continuously during an alarm.
Alarm Output: Polarized output. Cycle 0.25S, duty ratio 1/2. Voltage range 13V~24V (built-in 10k resistor in series, maximum output current is 2.0mA).
Max. Ripple Voltage: 2V (peak to peak value)
Alarm Reset: Instant power down (10s Min, 1.0VDC Max)
Wiring: Two-wire, polarity sensitive.
Sensitivity Range: 1.23%~3.20% per ft
Environment Temperature: 32°F (0℃) ~ 100°F (+37.8℃)
Relative Humidity: ≤95%, non-condensing
Material and Color: ABS, white (RAL 9016)
Ingress Protection Rating: IP2X
Dimension: Diameter: 100mm, Height: 44.5mm (without base)
Mounting Hole Spacing: 45mm-75mm
Weight: About 110g
Compatibility:
- EST3/3x IDC (detector capacity: 19)
- SIGA-UM/MAB (detector capacity: 10)
- RZI16-2 (detector capacity: 25)
- Fireshield Plus (detector capacity: 25)
Listing: UL268

Usage Features

Reed Switch Testing: The detector supports reed switch testing for easy verification of functionality.
Drift Sensitivity: Its drift sensitivity makes it suitable for a wide range of environments.
Alarm Output Terminal: Provides an alarm output terminal for connection with a remote indicator.
Recommended Wiring: Requires 1.0mm² or above fire cable for all terminals, routed through metal or flame-proof conduit, adhering to local codes. Different color cables are used to prevent wiring mistakes.
Device Capacity: Up to 25 conventional devices can be connected to a module/FACP, though specific detector capacity per circuit varies by module type (e.g., 19 for EST3/3x IDC, 10 for SIGA-UM/MAB, 25 for RZI16-2 and Fireshield Plus).
Installation: The base is fixed with two tapping screws. The detector is then aligned with the base and rotated clockwise to secure it.
Testing: Before testing, ensure correct installation and power-up for at least 10 seconds. Notify proper authorities that the system is undergoing maintenance and disable the zone to avoid unwanted alarms. Testing can be performed using a magnet on the designated test zone or by applying aerosol smoke (e.g., Trutest model 300 Aerosol Smoke Detector Tester at 4%/ft to 5%/ft obscuration, or canned aerosol simulated smoke like AERO400). After testing, power down for at least 10 seconds to reset the detector and notify authorities that the system is back in operation.
Cautions:
- Dust covers should remain in place until the project is formally in use.
- Detectors should be removed during construction, decoration, or other dust-producing activities.
- Care must be taken not to damage the detector during maintenance.
- The detector may not sense fire in areas where smoke cannot reach it (e.g., chimneys, walls, roofs, or behind closed doors).
- The detector cannot monitor areas beyond its protection zone.
- It may not warn against fires caused by insufficient safety measures, explosions, gas leaks, improper storage of flammable materials, arson, or children playing with fire.
- In high-velocity environments, alarms may be delayed due to smoke dilution.
- Smoke detectors have a service life and require regular testing (at least once a year) and maintenance according to manufacturer recommendations and state standards.
- Detector guards should only be used if the combination has been evaluated and found suitable.

Maintenance Features

Annual Cleaning: The detector must be cleaned once a year to ensure normal operation.
Removable Sensing Chamber: Features an innovative, removable sensing chamber, making maintenance easy.
Chamber Clearing Steps:
1. Notify authorities that the system is undergoing maintenance and disable the zone.
2. Open the top cover of the detector.
3. Draw out the sensing chamber by gently lifting its two sides with a straight screwdriver.
4. Clean the insect guard and sensing chamber using a vacuum cleaner, compressed air, or by washing with clear water and a brush.
5. Install the sensing chamber and the top cover back.