Bosch FAS-420-TM User manual

FAS-420-TM Aspirating Smoke Detector
FAS-420-TM
en Operation Guide

FAS-420-TM Aspirating Smoke Detector Table of Contents | en 3
Bosch Sicherheitssysteme GmbH Operation Guide F.01U.088.878 | 4.1 | 2010.11
Table of Contents
1 General 6
1.1 Introduction 6
1.2 Safety Instructions 6
1.3 Warranty 6
1.4 Copyright 6
1.5 Disposal 7
2 Technical Specifications 8
2.1 Product Description 8
2.2 Areas of Application 10
2.3 System Overview 12
2.4 Functions 13
2.5 FAS-420-TM Series Aspirating Smoke Detectors and Accessories 17
2.5.1 Overview 17
2.5.2 FAS-420-TM Series Connections 18
2.5.3 FAS-420-TM Displays 19
2.5.4 FAS-420-TM-R Displays 20
2.5.5 FAS-420-TM-RVB Displays 21
2.5.6 FAS-ASD-DIAG Diagnostic Software 21
2.5.7 Remote Indicators 22
2.6 Pipe System Components 22
2.6.1 Overview 22
2.6.2 Air Sampling Openings 23
2.6.3 Ceiling Lead-through 25
2.6.4 Air-Return Pipe for Pressure Areas and Atmospheric Loads 25
2.6.5 Water Separator for Humid Areas 26
2.7 Scope of Delivery: Smoke Aspiration System 28
2.8 Technical Specifications 30
2.8.1 FAS-420-TM Series Aspirating Smoke Detectors 30
2.8.2 Pipe system 31
2.8.3 Smoke Aspiration System Components 31
3 Planning 33
3.1 Regulations 33
3.2 Principles of Pipe Planning 34
3.3 Airflow Monitoring 36
3.4 Defining the Response Sensitivity 37
3.5 Planning Limits 38
3.6 Standard Pipe Planning 39
3.6.1 Determining the Necessary Accessories 39
3.6.2 Pipe Planning with Pipe Accessories 39
3.6.3 Planning with Air Filter 41
3.6.4 Opening Diameter 42
3.7 Planning with Single-hole Monitoring 44
3.7.1 I-pipe system 44
3.7.2 U-pipe system 45

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3.7.3 M-pipe system 46
3.7.4 Double U-pipe system 48
3.8 Simplified pipe planning 49
3.8.1 I-Pipe System - Simplified Planning 49
3.8.2 U-Pipe System - Simplified Planning 50
3.8.3 U-pipe System - Simplified Planning 50
3.8.4 Double U-Pipe System - Simplified Planning 51
3.9 Planning for forced airflow 52
3.10 Power Supply 55
4 Installing the Aspirating Smoke Detector 58
4.1 General 58
4.2 Setting the Detector Address 58
4.3 Installing the Unit 59
4.4 Connection to the Fire Panel 62
4.4.1 Electrical Connection 62
4.4.2 LSN Configuration 63
4.4.3 Parameter Settings via Programming Software 63
4.4.4 Settings via the FAS-ASD-DIAG Diagnostic Software 64
4.5 Data Logging 65
5 Installation of the Pipe System 66
5.1 Length Change of the Pipe System 68
5.2 Air Sampling Openings 68
5.3 Ceiling Lead-through 70
5.4 Monitoring with Forced Airflow 71
5.4.1 Detection at Intake and Exhaust Openings 71
5.4.2 Detection in the Bypass 71
5.5 Air filter 72
5.5.1 Installing the Air Filter Box 72
5.6 Air-return pipe 72
5.7 Three-way tap 73
5.8 Water separator 73
5.9 Test Adapter 74
6Commissioning 76
6.1 Preparation 76
6.2 Detector Module Commissioning 76
6.3 Calibrating the Airflow Sensor 77
6.3.1 Air-Pressure-Independent Calibration 77
6.3.2 Air-Pressure-Dependent Calibration 77
6.4 Checking the Detector Module and Alarm Transfer 79
6.5 Checking Malfunction Transmission 80
6.6 Checking Airflow Monitoring 80
6.7 Functional Test of Airflow Sensors 81
6.7.1 Preparations for the Functional Test 81
6.7.2 Conducting the Functional Test 82
6.8 Fire Source Identification Commissioning 85

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7 Maintenance 86
7.1 Visual check 86
7.2 Detector Module and Alarm Transfer 86
7.3 Pipe System 86
7.4 Replacing the Detector Module 87
7.5 Replacing the Air Filter in the Housing Base 88
7.6 Filter Change on the Filterbox 89
7.7 Blowing-out Process for the Pipe System 90
7.8 Checking the Airflow Sensor Calibration 90
7.9 Testing the Fire Source Identification 92
7.10 Airflow monitoring 92
7.11 Malfunction Transmission 92
7.12 Maintenance Intervals 92
8 Appendix 94
8.1 DIP Switch Settings for Detector Addresses 95
8.2 Planning without air filter 97
8.2.1 Without any other pipe accessories 97
8.2.2 With water separator 97
8.3 Planning with Air Filter 98
8.3.1 Without Any Other Pipe Accessories 98
8.3.2 With water separator 98
8.4 Test Log for Aspirating Smoke Detectors in the FAS-420-TM Series 99
Index 101

6en | General FAS-420-TM Aspirating Smoke Detector
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1 General
1.1 Introduction
This operation guide describes the smoke aspiration systems featuring FAS-420-TM series
Aspirating Smoke Detectors and the associated aspiration pipe system.
The FAS-420-TM designation in this operation guide refers to all FAS-420-TM series
(FAS-420-TM, FAS-420-TM-R, FAS-420-TM-RVB) versions. Specific references are made to
differences between the individual versions.
1.2 Safety Instructions
The following symbols identify points in this operation guide that require particular attention
in order to guarantee smooth operation and prevent damage.
1.3 Warranty
The operation guide is subject to technical modification without prior notice and makes no
claim to completeness. Our "delivery and installation conditions" apply as a matter of
principle. Warranty and liability claims in case of personal injury and property damage cannot
be asserted if they are based on one or more of the following causes:
– Insufficient attention to the instructions with respect to planning, installation of the
aspirating smoke detector, installation of the pipe system, commissioning and
maintenance
– Use of the smoke aspiration system contrary to the regulations
– Insufficient monitoring of wearing parts
– Faulty repairs
– Arbitrary constructional changes to the smoke aspiration system
– Acts of God.
Bosch Sicherheitssysteme GmbH, hereinafter referred to as Bosch, assumes no liability for
damage or malfunction arising through failure to comply with this operation guide.
1.4 Copyright
The copyright to this operation guide remains with Bosch.
NOTICE!
Operational malfunction can be prevented and operational improvements can be achieved by
observing these instructions.
CAUTION!
This symbol warns against actions and behavior which, if disregarded, could cause property
damage.
WARNING!
This symbol warns against actions and behavior which, if disregarded, could cause personal
injury.
CAUTION!
The equipment may only be installed by authorized and qualified personnel!

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This operation guide is intended exclusively for installation engineers and their employees.
Reprinting this operation guide or extracts thereof is permitted for internal purposes only.
1.5 Disposal
Unusable electrical and electronic devices or modules must not be disposed of with normal
household refuse. They must be disposed of in compliance with the applicable regulations and
directives (e.g. WEEE in Europe).

8en | Technical Specifications FAS-420-TM Aspirating Smoke Detector
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2 Technical Specifications
2.1 Product Description
Aspirating Smoke Detectors from the FAS-420-TM series are active fire detection devices that
are connected directly to the Local SecurityNetwork (LSN) improved version for early fire
detection. They are used for space and equipment protection as well as for monitoring air
conditioning units or ducts (provided that the FAS-420-TM is installed outside of these units
or ducts). You can also pinpoint the exact location of the fire using the innovative fire source
identification operation.
Local SecurityNetwork (LSN) improved version
FAS-420-TM series Aspirating Smoke Detectors were developed specifically for connection to
Bosch fire panels with LSN improved version technology and therefore offer the following
extended features:
– Flexible network structures, including T-tapping with no additional elements
– Up to 254 LSN-improved elements per loop or stub line
– Unshielded cable can be used.
The FAS-420-TM series also offers all the established benefits of LSN technology. The
operating data and fault messages can be read off the fire panel's operating and display unit.
Variants
All FAS-420-TM series Aspirating Smoke Detectors have LED displays for operating mode,
malfunction and main alarm, and also offer an infrared diagnostics port. In addition to this,
the FAS-420-TM-R and FAS-420-TM-RVB variants offer an optical fire location display for up to
five zones. The FAS-420-TM-RVB also includes a pre-alarm display and a 10-segment smoke
level display.
Fire source identification
Innovative fire source identification technology allows the exact location of the fire to be
pinpointed by monitoring up to five distinct neighboring zones. To enable the emergency
response teams to intervene as quickly as possible, the location of the fire can also be
identified using the FNS-420-R LSN Strobes, for example, which are assigned to the various
monitoring ranges.
Sensitivity
FAS-420-TM series Aspirating Smoke Detectors have a response sensitivity of 0.5%/m to 2%/
m light obscuration. The sensitivity levels can be selected according to the area of application
using the fire panel's programming software (see Section 4.4.3 Parameter Settings via
Programming Software, page 63). The smoke level display on the FAS-420-TM-RVB model
allows a response sensitivity of 0.05%/m to 0.2%/m light obscuration.
With the new high-power light source technology, a broad detection spectrum including all
standardized fires is achieved (see Section 3.4 Defining the Response Sensitivity, page 37).
LOGIC×SENS
The intelligent signal processing LOGIC·SENS distinguishes between deception variables and
fire events in order to prevent false alarms.
Reliable airflow monitoring
Analogous to point-type smoke detectors, which are monitored electronically for wire breaks
and short-circuits, highly sensitive and dependable airflow monitoring is required for smoke
aspiration systems. The airflow sensors used in the FAS-420-TM series reliably detect
malfunctions such as pipe breakage or obstructions in the air sampling openings.

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Airflow monitoring is temperature-compensated and can be set depending on the air
pressure.
Plug-and-play
The plug-and-play function makes the installation and commissioning of the aspirating smoke
detectors simple. The housing base is preinstalled on site. By preinstalling the detector
module for standard applications, the FAS-420-TM series Aspirating Smoke Detectors are
ready for operation as soon as they are inserted into the housing base.
Patented air sampling openings
The air sampling openings of the pipe system require clearly defined bore diameters that
depend on the planning and design. These precise air sampling openings are created using
patented aspiration reducing film sheets, marking tape, and clips, which not only permit easy
installation, but also prevent "whistling" noises. Another advantage is the quick and easy
detection and checking of the air sampling opening diameters.
Point-type detector projection
The system’s aspiration points can be equated with point-type smoke detectors. The
monitoring areas can therefore be planned in accordance with the applicable national
regulations.
Diagnostics
A system with FAS-ASD-DIAG Diagnostic Software, which enables quick and convenient error
containment, is available for maintenance and service. The current and stored (max. 72 hours)
unit status is read out to the diagnostic appliance via the unit's infrared port. The data is
transmitted from the diagnostic appliance to a laptop via a USB cable.
Selecting the fan voltage
The fan voltage can be increased for special planning from 9 V to 12 V via the fire panel's
programming software. In addition, the fan voltage can be increased up to 13.5 V in intervals
of 1 V via the FAS-ASD-DIAG Diagnostic Software. The increase in the fan voltage causes an
increase in the air transport speed and therefore reduces detection time.
Extensive pipe accessories
The extensive range of accessories enables the FAS-420-TM aspirating smoke detectors to be
used even in the most difficult conditions. Products from air filters and condensate separators
to blowing-out systems increase the service life in extremely dusty, damp and cold
environmental conditions.

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2.2 Areas of Application
Thanks to their detection principle, FAS-420-TM aspirating smoke detectors represent an
extremely versatile fire protection solution.
Principle
Air samples are taken from the monitoring range by a pipe system with defined aspiration
borings and then fed to the detector module.
This is especially well-suited for areas in which point-type detectors cannot be used or can
only be used under certain circumstances. These include:
– Areas that are difficult to access, in which point detectors are difficult to install and
maintain
– Air-conditioned areas
– Areas that require the earliest detection possible
– Areas with a height greater than that allowed for point detectors
– Areas in which point detectors are not desired for aesthetic reasons
– Areas in which strong electromagnetic fields occur
– Areas that are exposed to high or low temperatures
– Areas with contaminated air that require filter elements
– Areas that must be protected against vandalism.
Space protection
The FAS-420-TM series is suitable for monitoring areas such as
– Those with double floors, false ceilings
– Tunnels, ducts, barely accessible hollow spaces
– Storage, high-rise warehouses, elevator shafts
– Museums, cultural institutions
– Hotel rooms, hospital rooms, offices, prison cells, train compartments
Area monitoring with air-conditioning
Area monitoring occurs
– In rooms with air-conditioning for service rooms etc.
– In ventilation ducts
– In double floors, false ceilings
– In IT rooms, e-distributor rooms, transformer cells
Figure 2.1 Principle of area monitoring with FAS-420-TM series Aspirat-
ing Smoke Detectors
1 Room pipe system
2 Double-floor pipe system
FAS / FCS
1
2
TITANUSMICRO·SENS®
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TITANUSMICRO·SENS®
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– On air-conditioning units (Figure 2.2) or
– In the bypass in air-conditioning ducts.
The FAS-420-TM Aspirating Smoke Detector can be used for early fire detection in areas with
special-purpose air conditioning.
Thanks to its high sensitivity, expensive goods and equipment can be monitored reliably. The
aspirating smoke detectors from the FAS-420-TM series are therefore especially suitable for
areas of application:
– Where early intervention is essential due to a high value concentration
– Where equipment must always be operational
– Where highly sensitive detection is necessary (e.g. in areas where, due to built-in filter
elements, the air contains a low concentration of smoke particles)
– Where high air-exchange rates prevail.
Equipment protection
Equipment monitoring involves the direct monitoring of an object. These can be unventilated
or force-cooled units or cabinets, e.g.
– Distributor cabinets, switching cabinets
– Telephone-switching equipment
– Measuring, control, and regulation equipment.
Figure 2.2 Monitoring options for an air-conditioning unit or an air-
conditioning duct (depiction of principle)
1 Air-conditioning duct
2 Air-conditioning unit
FAS / FCS
FAS / FCS
FAS / FCS
1
2

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2.3 System Overview
The Smoke Aspiration Systems comprise a detector module, housing base and pipe system.
The most important components of the Smoke Aspiration System are the sensitive detector
module for detecting smoke aerosols and the aspiration unit with the built-in airflow sensor
for transporting the air samples and monitoring the pipe system for breakage and
obstructions.
The pipe system comprises essentially pipe and fittings. The standard pipe system is made
from PVC or ABS. The pipes used for equipment monitoring should be halogen-free.
Each air sampling opening in the pipe system represents a point detector in the planning.
Figure 2.3 Principle of equipment monitoring with FAS-420-TM series
Aspirating Smoke Detectors
1Clicking
1
FAS / FCS
Figure 2.4 Overview of the aspirating smoke detector
A Pipe system
FAS-420-TM Aspirating Smoke
Detector
1Smokeaspiration
pipe
2 Air intake
3 Air sampling
openings
4 Detector module
incl. airflow sensor
5 Housing base
6 Aspiration unit
7 Air outlet
2
7
3
1
A
FAS / FCS
4
6
5

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To guarantee reliable operation even under the most difficult conditions (clean rooms,
recycling area), there are numerous accessories available, such as air filters and water
separators; see Section 2.6 Pipe System Components, page 22.
2.4 Functions
Air samples are taken from the area to be monitored via the aspiration unit. They are fed via a
pipe system with defined air sampling openings to the sensitive detector module (see
Figure 2.4).
Detection
Depending on the response sensitivity of the detector module in use and the alarm threshold
programmed, the FAS-420-TM aspirating smoke detector triggers the alarm when the
corresponding air obscuration threshold is reached. The alarm is displayed via the pre-alarm
or main alarm LED on the device and forwarded to a connected fire panel.
Various delay times can be set for the alarm thresholds, as well as for displaying and
transferring malfunctions (see Section 4.4.3 Parameter Settings via Programming Software,
page 63). Alarm messages are saved and are reset after the cause has been eliminated.
LOGIC×SENS
The LOGIC·SENS intelligent signal processing compares the measured smoke level with known
disturbance variables and decides whether something is an alarm or deception. LOGIC SENS
can be activated or deactivated using the fire panel's programming software.
Fire source identification
Fire source identification is possible if an I pipe is planned for a maximum of five areas or
devices. The procedure can be divided into four phases (Figure 2.5 to Figure 2.8).
–Phase 1
In its general operating state, the FAS-420-TM-R/-RVB Aspirating Smoke Detector
extracts air samples from the monitoring range and analyzes these for the presence of
smoke particles.
Figure 2.5 Phase 1: Normal operation
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FAS-420-TM series

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–Phase 2
As soon as the system has switched to alarm state as a result of a rise in the
concentration of smoke particles typical of a fire, the alarm is signaled.
Figure 2.6 Phase 2: Early fire detection
–Phase 3
When the alarm is signaled, once the configurable pre-alarm threshold is reached, the
aspiration fan switches off and a second fan blows all smoke particles out of the pipe
system in the opposite direction.
Figure 2.7 Phase 3: Blowing out
–Phase 4
Once the pipe system has been blown out, the direction of flow is reversed again and the
time required for the smoke particles to penetrate into the detector module is measured.
On the basis of this time, the location of the smoke source can be accurately traced to
one of the monitored areas.
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FAS-420-TM series
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Figure 2.8 Phase 4: Identification of fire source by reversing the fan's direction of flow
Once the fire source has been identified, it is displayed via a corresponding display on the
FAS-420-TM-R/-RVB and on the operating and display unit of the fire panel.
Detection
Depending on the response sensitivity set on the detector module (0.5%/m to 2%/m light
obscuration), the FAS-420-TM-R/-RVB triggers the main alarm when the appropriate light
obscuration is reached. The sensitivities can also be set at intervals of 0.1%/m using the
FAS-ASD-DIAG Diagnostic Software. The alarm is displayed via the alarm display on the unit
and forwarded to the fire panel connected. The alarm thresholds and the display and
transmission of malfunctions can be allocated different delay times. The intelligent
LOGIC·SENS signal processing hides misleading values that are similar to those shown in the
event of a fire, and ensures a high level of security against false alarms.
Alternative sensitivity
The LSN improved fire panel allows the sensitivity set on the detector module to be changed if
necessary. Changes to the sensitivity of the detector module can be made in the following
intervals: 2.0 / 1.0 or 0.5%/m light obscuration.
Changing the detector module's sensitivity setting allows you to adjust smoke detection to
process-specific disturbance values, such as those caused by
– an increase in the aerosol or contamination levels in the monitoring range due to the time
of day (day/night mode)
– an increase in the aerosol or contamination levels in the monitoring range due to the
operation currently in progress (e.g. installation work, welding or increased generation of
water vapor, exhaust fumes and dust
etc.).
Monitoring unit
The detector module is monitored for contamination and for signal malfunction. A malfunction
is displayed on the unit and forwarded to the fire panel. Malfunctions caused by brief
environmental fluctuations can be eliminated with a time-delayed setting.
Airflow Monitoring
An airflow sensor checks the connected pipe system for breakage and obstruction.
The airflow sensor can – depending on the configuration of the pipe system (see
Section 3.2 Principles of Pipe Planning, page 34) and the setting of the airflow sensors - detect
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an obstruction of a single air sampling opening. Airflow monitoring is temperature-
compensated and can be set depending on the air pressure.
On expiry of a defined delay, the malfunction is displayed on the aspirating smoke detector
and the message is transmitted to the fire panel. The monitoring window thresholds can be
modified to suit the environmental conditions (see Section 3.3 Airflow Monitoring, page 36).
The principal signal curve of the airflow sensor is indicated in Figure 2.9.
Resetting via fire panel
A malfunction message is reset via the connected fire panel. Alarm and malfunction messages
are displayed simultaneously on the unit via the Local SecurityNetwork LSN using the reset
function on the detector line.
Calibrating the airflow sensor
The airflow sensor calibration of the FAS-420-TM Aspirating Smoke Detector is performed
automatically when the detector module is inserted into the housing base, provided that the
X4 jumper has been plugged into another socket first. This plug-and-play feature makes the
FAS-420-TM considerably easier to commission. In addition, the calibration can also be
performed using the FAS-ASD-DIAG Diagnostic Software. The initialization phase is therefore
carried out according to or independently of the air pressure as desired.
Pipe system
A pipe system with an overall length of up to 50 m can be connected to FAS-420-TM series
Aspirating Smoke Detectors over a maximum of 8 aspiration points. A maximum of 5
aspiration points can be connected with ROOM·IDENT.
Figure 2.9 Example of the signal process of the airflow sensor in
case of malfunctions
S Airflow sensor signal
tTime
1 Normal airflow
2Airflowtooweak
3 Airflow too strong
4 Breakage
5 Obstruction
6 Monitoring window
7 Delay
8 Malfunction message
S
t
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2.5 FAS-420-TM Series Aspirating Smoke Detectors and
Accessories
2.5.1 Overview
FAS-420-TM series Aspirating Smoke Detectors comprise the following components:
Housing base
– Connections for pipe with 25 mm external diameter (input and return)
– Pack with cable entries, 1 x M 25 (for cable diameter of 1-18 mm) and
2 x M 20 (for cable diameter of 1-13 mm)
– Screw terminals for securing cables with a thickness of up to 2.5 mm²
Detector module
– Sensitive detection with the latest technology according to the principle of an optical
scattered-light smoke detector with integrated airflow monitoring
– Aspiration unit with optimized air routing
– PC board with LSN connections, connection for shield wire and DIP switch for address
setting
– Infrared diagnostics port
– FAS-420-TM: optical displays for main alarm, malfunction and operation
– FAS-420-TM-R: optical displays for fire source identification, main alarm, malfunction and
operation
– FAS-420-TM-RVB: optical displays for fire source identification, pre-alarm and main alarm,
malfunction and operation, smoke level display
Information on other accessories for special applications can be found in
–Section 2.5.6 FAS-ASD-DIAG Diagnostic Software
–Section 2.6.3 Ceiling Lead-through
–Section 2.6.5 Water Separator for Humid Areas
Figure 2.10 Overview of FAS-420-TM series aspirat-
ing smoke detectors and accessories
1 Pipe system
2 Connections to fire panel/power supply
3 Air-return Pipe
AFAS-ASD-DIAG Diagnostic Software with
connection cable
B Cable entries (2 x M20, 1 x M25)
C Test pipe
1
2
3
A
BC
FAS-420-TM series

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2.5.2 FAS-420-TM Series Connections
Figure 2.11 FAS-420-TM Connections (see table below for explanations)
FAS-420-TM
Series
Position
in
Figure 2.1
1
Function Explanation
1 Connection for aspiration pipe For ∅25 mm pipe
system
2 Connection for air-return pipe For ∅25 mm pipe
system
3 Cable bushing for connection of fire
panel and additional power supply
(input/output)
2 x M 25
4 Cable bushing for connection of fire
panel and additional power supply
(input/output)
8 x M 20
FAS-420-TM series
FAS-420-TM series
2
1
3
3
4
4
4
4
4
44
4
NOTICE!
When using fire source identification, it is not permitted to connect an air-return pipe.

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2.5.3 FAS-420-TM Displays
Figure 2.12 FAS-420-TM displays
FAS-420-TM Display LED Explanation
Operation Green Operation display
Main alarm Red Main alarm display
Malfunction Yellow Malfunction
– in the pipe system
– in the detector module
–causedbyfanfailure
Infrared port Fault diagnosis

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2.5.4 FAS-420-TM-R Displays
Figure 2.13 FAS-420-TM-R displays
FAS-420-TM-R Display LED Explanation
Operation Green Operation display
Main alarm Red Main alarm display
Malfunction Yellow Malfunction
– in the pipe system
– in the detector module
–causedbyfanfailure
Fire source
identification for
zones A-E
5 red
LEDs
Fire source identification
Infrared port Fault diagnosis
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A