Heat Detector for AVENAR 4000 | BOSCH

• Highly reliable and accurate thanks to Intelligent Signal Processing (ISP)

• Earliest detection of lightest smoke with dual- optical versions (Dual-Ray technology)

• Monitors environment for electromagnetic influence for fast root-cause analysis

• Automatic and manual address setting

The automatic fire detectors of the AVENAR detector 4000 series feature a superb accuracy and swiftness in detection. The range includes versions with rotaries, manually and automatically addressable, and versions without rotaries for automatic address setting.

Multiple-criteria detectors can support, if single sensors are not sufficient. They have highest stability against deceptive phenomena and response to a broad range of fires. The versions with two optical sensors (dual‐optical) detect the lightest smoke. The versions with heat sensor detect fires with rapid temperature increase or with a maximum temperature value.

CO fire detectors react promptly to smoldering and suit better for applications with dust, steam, cooking
vapors. Included CO-detection helps to support an even more reliable fire detection and leads in parallel
to a higher false alarm stability.

Sensor technology and signal processing

The individual sensors can be configured in the FSP-5000-RPS programming software. All sensor signals are analyzed continuously by the internal evaluation electronics (ISP, Intelligent Signal Processing) and are linked with each other via an inbuilt microprocessor. The link between the sensors means that the combined detectors can also be used where light smoke, steam or dust must be expected during the course of normal operation. Only if the signal combination corresponds to the
characteristics of the area of operation, selected during the programming, the alarm is triggered

automatically. Additionally the time behavior of the sensor signals is evaluated for fire and malfunction detection. Thus, for each individual sensor the reliability of detection is increased. This complex evaluation of fire characteristics (Pattern matching of fire characteristics) reduces the risk of a false alarm. Active adjustment of the optical or the chemical sensor (drift compensation) takes place. Adjustment to extreme disturbance variables is possible through manual or time-controlled switch-off of individual sensors.

In the case of the optical and chemical sensor, the response threshold (drift compensation) is actively adjusted. Manual or time-controlled switch-off of individual sensors is possible for adjustment to extreme interference factors. All detectors of the AVENAR detector 4000 series are
suitable as a technical measure to avoid false alarms.

Optical sensor (smoke sensor)

The optical sensor uses the scattered-light method. An LED transmits light to the measuring chamber, where it is absorbed by the labyrinth structure. In the event of a fire, smoke enters the measuring chamber and the smoke particles scatter the light from the LED. The amount of light hitting the photo diode is converted into a proportional electrical signal. The dual-optical versions use two optical sensors with different wavelengths. The Dual-Ray technology works with an infrared and a blue LED so that lightest smoke is detected fast and reliably (TF1 and TF9 detection).

Thermal sensor (temperature sensor)

A thermistor in a resistance network is used as a thermal sensor from which an analog-digital converter measures the temperature-dependent voltage at regular intervals. Depending on the specified detector class, the temperature sensor triggers the alarm status when the maximum temperature of 54 °C or 69 °C is exceeded (thermal maximum), or if the temperature rises by a defined amount within a specified time (thermal differential).

Chemical sensor (CO gas sensor)

The main function of the chemical sensor is to detect carbon monoxide (CO) generated as a result of a fire, but it will also detect hydrogen (H) and nitrous monoxide (NO). The sensor signal value is
proportional to the concentration of gas. The chemical sensor delivers additional information to effectively suppress deceptive values.

Since the service life of the chemical sensor is limited, the C sensor shuts down automatically after a maximum time of operation. The detector will then still operate as a multisensor detector with dual-
optical and thermal sensor. It is recommended to exchange the detector immediately in order to keep the higher detection reliability of the version with C sensor. Make sure you have a working detector depending on the chosen sensitivity setting in RPS.

Improved LSN features

AVENAR detector 4000 offers all the features of the improved LSN technology:
• Flexible network structures, including T‐tapping without additional elements (no T-tapping feasible
for versions without rotaries)
• Up to 254 LSN improved elements per loop or stub line
• Automatic or manual detector addressing, with or without auto-detection
• Power supply for connected elements via LSN bus
• Unshielded fire detection cable can be used
• Cable length up to 3000 m (with LSN 1500 A)
• Backwards compatibility to existing LSN systems and central units
• Monitoring of environmental electromagnetic impact for fast root-cause analysis (EMC values are displayed on the panel)

In addition, the range offers all the established benefits of LSN technology. The panel programming
software can be used to change the detection characteristics of the respective room utilization. Each configured detector can provide the following data:
• Serial number
• Contamination level of the optical section
• Operating hours
• Current analog values

– Optical system values: current measured value of the scattered light sensor; the measuring range is linear and shows different degrees of pollution, from slight to heavy.
– Contamination: the contamination value shows how much the current contamination value has increased relative to the original condition.
– CO value: display of the currently measured value.

The sensor is self-monitoring. The following errors are indicated on the fire panel:
• Fault indication in the event of the failure of the detector electronics
• Continuous display of contamination level during service
• Fault indication if heavy contamination is detected

(instead of triggering a false alarm) In the event of wire interruption or short-circuit, integrated isolators maintain the functional security of the LSN loop.

In the event of an alarm, individual detector identification is transmitted to the fire panel.

Further characteristics
• A red flashing LED visible 360° indicates the alarm.
• Connection to a remote indicator is possible.
• The strain relief for cables in false ceilings prevents the cables from being unplugged accidentally from the terminals after installation. The terminals for cable cross-sections up to 2.5 mm2 are very easily accessible.
• The detectors have a dust-repellent labyrinth and cap construction. The chamber maid plug (an opening with closing plug) on the bottom is used to clean the optical chamber with compressed air (not required for the heat detector).
• The detector bases no longer have to be directed due to the centralized position of the individual display. They also have a locking clip. To prevent that unauthorized persons have access to the detector, the locking clip can be activated.

Regulatory information

Region	Regulatory compliance/quality marks
Europe	CPR	0786-CPR-21398 FAP-425-O
	CPR	0786-CPR-21399 FAP-425-O-R
	CPR	0786-CPR-21400 FAP-425-OT
	CPR	0786-CPR-21401 FAP-425-OT-R
	CPR	0786-CPR-21403 FAP-425-DO-R
	CPR	0786-CPR-21404 FAP-425-DOT-R
	CPR	0786-CPR-21405 FAP-425-DOTC-R
	CPR	0786-CPR-21798_FAP-425-DOTCO-R
	CPR	0786-CPR-21402 FAH-425-T-R
Morocco	CMIM	FAP-425
Macao Special Administrative Region Government	CB	3175/GEL/DPI/2017
Germany	VdS	G214100 FAP-425-O
	VdS	G214099 FAP-425-O-R
	VdS	G119017 FAP-425-O-R
	VdS	G214098 FAP-425-OT
	VdS	G214097 FAP-425-OT-R
	VdS	G119018 FAP-425-OT-R
	VdS	G214104 FAP-425-DO-R
	VdS	G214103 FAP-425-DOT-R
	VdS	G214102 FAP-425-DOTC-R
	VdS	G119016 FAP-425-DOTC-R
	VdS	G214101 FAH-425-T-R
	VdS	G119019 FAH-425-T-R
Europe	CE	FAP/FAH/-425
Poland	CNBOP	063-UWB-0423 FAP-425-DOT-R

Installation/configuration notes

• Connectable to Bosch fire panels with the improved LSN system parameters.

• Your fire panel has to be equipped with a Panel controller, premium license or a Panel controller, standard license for using FAP-425-DOTCO-R.

• You cannot use the dual-optical detectors with Panel Controller MPC version A.

• FAP-425-DOTCO-R excluded, AVENAR detector in LSN classic mode is connectable to the LSN fire
panels BZ 500 LSN, UEZ 2000 LSN, UGM 2020 and to other panels or their receiver modules with identical connection conditions, also with the previous LSN system parameters

• During planning works, it is essential to adhere to national standards and guidelines.

• The detector can be painted (cap and base) and
thereby adapted to the surrounding colour scheme.
Note the information in the Painting Instructions.

• Detectors of the 420 series can be replaced by all versions of the AVENAR detector 4000 without reconfiguring the panel.

Installation/configuration notes in accordance with VdS/VDE

• The FAP‐425-DOTC-R, FAP‐425-DOT-R, FAP‐425-OT- R, and FAP‐425-OT versions are planned in accordance with the guidelines for optical detectors if operated as optical detectors or as combined optical/thermal detectors (see DIN VDE 0833 Part 2 and VDS 2095)
• If occasional deactivation of the optical unit (scattered light sensor) is required, planning must be based on the guidelines for heat detectors (see DIN VDE 0833 Part 2 and VDS 2095)
• When planning fire barriers according to DIBt, note that the heat detector (FAH-425-T-R) must be configured in accordance with class A1R.

Technical specifications

Heed local guidelines. The local guidelines may overrule the given limits for example for the
installation height or the monitoring area.

Electrical

Operating voltage	15 V DC to 33 V DC
Current consumption	0.55 mA
Alarm output	Per data word by two-wire signal line.
Indicator output	Open collector connects 0 V over 1.5 kΩ through, max. 15 mA.

Mechanical

Dimensions (Ø x H) (mm)
• Without base	Ø 99.5 x 52 mm
• With base	Ø 120 x 63.5 mm
Housing
• Material	Plastic
• Color	White, similar to RAL 9010, matt finish
LED color	Red, Green