Bosch FAP-420 User Manual

Fire Alarm Systems | FAP-420/FAH-420 Automatic Fire Detectors LSN improved version
FAP-420/FAH-420 Automatic Fire
Detectors LSN improved version
www.boschsecurity.com
u Combination of optical, thermal and chemical
sensors with intelligent evaluation electronics.
u Earliest detection of lightest smoke (TF1 & TF9)
with the double-optical smoke detectors featuring
Dual-Ray technology
u Detector properties adapted to cater for room usage
u Drift compensation in optical and gas measurement
section
u Maintains LSN loop functions in the event of wire
interruption or short-circuit thanks to two integrated
isolators
The 420 Series Automatic Fire Detectors offer a
superb accuracy as well as detection speed and
precision.
The versions with dual-optical sensor (DO-detectors:
FAP-DO420, FAP-DOT420, FAP-DOTC420) are able to
detect lightest smoke (TF1 and TF9).
These detectors provide all advantages of LSN
improved version. The addressing of the detectors can
be configured with the integrated turning switches.
System overview
Operating
mode
Detector type
FAP-DOTC420 FAP-DOT420 FAP-DO420
Combined x x -
Optical x x x
Dual-Optical x x x
Thermo-max. x x -
Thermal
differential
x x -
Chemical
(+ optical)
x - -
Operating
mode
Detector type
FAP‑OTC 4
20
FAP‑OT 42
0
FAP‑O 420
(KKW)
FAH‑T 420
(KKW)
Combined x x - -
Optical x x x -
Dual-
Optical
- - - -
Thermo-
max.
x x - x

Bosch FAP-420 Specifications

General

Brand	Bosch
Model	FAP-420
Category	Fire Alarms
Language	English

Summary

System Overview and Features

System Overview

Details the core capabilities and sensor types of the 420 Series Automatic Fire Detectors.

Detector Functions and Technologies

Sensor Technologies

Explains optical, thermal, and chemical sensor operations and signal processing.

LSN Features and Operation

Covers improved LSN features, operating data, and self-monitoring capabilities.

Performance, Certifications, and Installation

Further Performance Characteristics

Details advanced features like LED indicators, remote alarm display, and cable strain relief.

Certifications and Approvals

Lists the compliance standards and certifications the detectors meet.

Installation and Configuration Notes

Provides guidance on installation, planning, and configuration according to standards.

Technical Specifications and Environmental Conditions

Parts Included and Environmental Data

Lists detector components and specifies permissible operating and storage conditions.

Electrical and Mechanical Specifications

Details electrical operating voltage, current consumption, dimensions, and housing.

Further Characteristics

Describes response sensitivity for optical and thermal parts, and gas sensor range.

Ordering Information and Accessories

Detector Planning and Ordering

Provides planning data like monitoring area and installation height, plus ordering information.

Available Accessories

Lists various detector bases, sounders, and protective accessories.