Bosch AVENAR Detector 4000

The AVENAR detector 4000 combines standard detection procedures with advanced gas measurement technology. It utilizes Intelligent Signal Processing (ISP) to evaluate signals from thermal, smoke, and gas sensors, significantly increasing immunity to false alarms and reducing detection time.

System Overview

The AVENAR detector 4000 integrates up to three detection capabilities: optical (smoke), thermal (heat), and chemical (CO gas). It supports automatic or manual addressing via rotary switches. The system is designed for LSN (Local Security Network) and LSN improved versions, allowing for flexible network configurations.

Sensor Technologies

Optical Sensor (Smoke Detector): Utilizes diffuse light measurement. A LED emits light into a measurement chamber, and smoke particles scatter the light, which is converted into an electrical signal by photodiodes. Dual Ray technology in DO detectors uses infrared and blue light for immediate fire detection.
Thermal Sensor (Heat Detector): Employs a thermistor to measure temperature. It activates an alarm when a specific temperature threshold is exceeded or when the temperature rises rapidly over a defined period (thermal differential).
Chemical Sensor (Gas Sensor): Detects carbon monoxide (CO), hydrogen (H), and nitrogen monoxide (NO). It measures the oxidation of CO and the resulting current, which is proportional to the gas concentration.

Features

Active sensor self-monitoring with central reporting.
Active threshold adjustment (drift compensation) for optical and chemical sensors.
High EMC safety (up to 50 V/m).
LSN loop function maintenance in case of cable breaks or short circuits due to integrated isolators.
Remote indicator activation capability.
Optional anti-tampering mechanism.
Dust-proof labyrinth and cap structure.
Optical chamber cleaning valve with compressed air (not applicable for heat detectors).
Compatibility with various Bosch fire alarm control panels.
Serial number, contamination level, operating hours, and EMC values can be read via LSN.
Supports shielded and unshielded cables.
LSN improved version allows up to 254 detectors per loop or open line.
Flexible network configurations without additional components (T-tap not supported for versions without rotary switch).
Automatic or manual detector addressing.
Conforms to EN 54, EN 50131, and VdS guidelines.

Accessories

Various accessories are available, including:

EOL Modules: FLM-420-EOL4W-S, FLM-420-EOL4W-D, FLM-420-EOL2W-W for LSN connections.
Mounting Plates: TP4 400 (up to 4m height) and TP8 400 (up to 8m height) for detector identification.
Protective Grille: SK 400 for protection against impacts.
Dust Cover: SSK 400 protective dust cover for use during construction.
Wall Bracket: WA400 for mounting on door frames or similar installations.
Heater Element: MH 400 for use in environments prone to condensation.
Sounder Bases: FNM-420U-A-BS and FNM-420-A-BS for acoustic alarm signaling.
Remote Indicators: FAA-420-RI-ROW and FAA-420-RI-DIN for visual indication when the detector is not visible.
Maintenance Tools: SOLO200 (detector removal tool), RTL-cap, SOLO330 (smoke detector tester), FME-TEST-SMOKE2 (test spray), FME-TEST-CO (CO test gas), SOLO461 (heat detector test kit), SOLO770 (battery), FME-TESTIFIRE (test instrument), FME-TS3 (smoke capsule), FME-TC3 (CO capsule), SOLO100 (telescopic pole), SOLO101 (fixed extension pole), SOLO610 (tool bag).

Programming

Programming is done via PC or laptop connected to a fire alarm control panel using the FSP-5000-RPS (Remote Programming System). The selection of the operating area is crucial for optimal fire and disturbance evaluation. Different detector models have specific programming options, including disabling individual sensors or adjusting sensitivity levels.

FAP-425-DOTC-R: Sensitivity can be adjusted for various environments, with default settings for offices (smoker/waiting room/restaurant/meeting room).
FAP-425-DOT-R / FAP-425-OT-R / FAP-425-OT: Default settings are for offices (day mode).
FAP-425-DO-R / FAP-425-O-R / FAP-425-O: Default settings are 'Medium'.
FAH-425-T-R: Sensitivity settings (A2R, A2S, A1R, A1, BR, BS) are based on application temperature, installation height, and sensitivity class according to EN 54 Part 5.

Connection

Detectors are used with various detector bases, including:

MS 400 / MS 400 B: Standard detector bases suitable for surface and flush mounting.
FAA-420-SEAL: Base with a seal for humid environments.
FAA-MSR 420: Base with a changeover relay contact.
MSC 420: Additional base for surface mounting with cable conduits and protection against condensation.

Installation involves screwing the base to a flat surface and connecting the detector. Wiring details and remote indicator connections are provided.

Maintenance and Service

Regular maintenance and verification by qualified personnel are required, following DIN VDE 0833 norms. Bosch ST recommends a visual and functional inspection at least annually.

Testing: Various tests are outlined, including LED checks, visual inspection, monitoring field checks, and activation tests using heat, smoke spray, and CO gas. Specific procedures are provided for different detector types and LSN improved versions.
Diagnostic Data: Information on detector status (normal, fault, alarm), type, physical address, logical address, and LED indicators is available.
Optical System Value: Indicates current contamination level, with actions recommended for light, heavy, or fault conditions.
Temperature Value: Displays the current temperature measured by the thermal sensor.
CO Analog Value: Shows the measured CO concentration.
Operating Time: Records the detector's operating hours.
Detector Status Information: Provides details on general malfunctions, sensor status, and EEPROM errors.
EMC Value: Indicates the electromagnetic compatibility level, with recommended actions based on current and average EMC values.
Warranty: Defective detectors under warranty are replaced free of charge.
Repairs: In case of failure, the entire detector should be replaced.
Disposal: Electrical and electronic equipment should not be disposed of with household waste and must be disposed of in accordance with applicable regulations (e.g., WEEE in Europe).

Technical Data

Detailed technical specifications are provided for each detector model, including:

Measurement of diffuse light.
Measurement of absolute temperature and temperature increase.
Measurement of combustion gases.
Dual optical sensors.
Contamination detection.
Drift compensation in the optical sensor.
Commutation of operating mode/deactivation of optical and thermal sensors.
Operating voltage and current consumption.
LED indicator.
Alarm output.
Indicator output.
Response sensitivity (optical sensor).
Differential thermal unit.
Maximum thermal unit.
Chemical sensor specifications.
Maximum monitoring area.
Maximum installation height.
Maximum permissible air velocity.
Storage temperature ranges.
Operating temperature ranges.
Relative humidity limits.
Protection category (IP rating).
Color code rings.
Base dimensions.
Housing material and color.
Approximate weight (with and without packaging).

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