Bosch FCP-320 Series User manual

Conventional Automatic Fire Detectors
FCP‑320/FCH‑320
en User manual

Conventional Automatic Fire Detectors Table of contents | en 3
Bosch Sicherheitssysteme GmbH User manual 2021.03 | 11 | F.01U.004.377
Table of contents
1Product Description 5
2System Overview 6
2.1 Configuration of the Detector 6
2.2 Functional Description of Sensor Technology 6
2.2.1 Optical Sensor (Smoke Detector) 6
2.2.2 Thermal Sensor (Heat Detector) 6
2.2.3 Chemical Sensor (Gas Sensor) 6
2.3 System Description 6
2.4 Features 7
3Planning 8
3.1 Basic Planning Guidelines 8
3.2 Use in Fire Barriers Conforming to DIBt 8
4Installation 9
4.1 Overview of Detector Bases 9
4.2 Overview of Detector Base Sounder 10
4.3 Mounting the Bases 10
4.4 Wiring 11
4.4.1 Wiring MS 400/MS 400 B 12
4.4.2 Wiring MSR 320 13
4.4.3 Wiring MSS 300 14
4.5 Installing the Detector Head 14
4.6 Detector Removal 15
5Accessories 16
5.1 EOL Module for Line Termination According to EN 54-13 16
5.2 Support Plates for Detector Identification 16
5.3 SK 400 Protective Basket 16
5.4 SSK 400 Protective Dust Cover 17
5.5 WA400 Detector Console 17
5.6 MH 400 Detector Heating Element 17
5.7 Remote Indicators 17
6Order Overview 22
6.1 Detector Variants 22
6.1.1 Detectors with 820 Ohm Alarm Resistor 22
6.1.2 Detectors with 470 Ohm Alarm Resistor* 22
6.2 Detector Bases 22
6.3 Detector Accessories 22
6.4 Installation Accessories 23
6.5 Detector Base Sounders 23
6.6 Remote Indicators 23
6.7 Service Accessories 23
7Maintenance and Service 25
7.1 Coding of the Detector Types 26
7.2 Test Procedure for Detectors with C-Sensor 26
7.3 Test Procedure for Detectors without C-Sensor 27
7.4 Warranty 27
7.5 Repair 27
7.6 Disposal 27
7.7 Additional Documentation 27

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8Specifications 28
9Abbreviations 31

Conventional Automatic Fire Detectors Product Description | en 5
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1 Product Description
i
Notice!
This Product Information describes the entire product range of the FCP-320/FCH-320
Conventional Automatic Fire Detectors.
The FCP-320/FCH-320 Conventional Automatic Fire Detectors works on the basis of the
conventional technology and combines standard detection methods such as scattered light
measurement and temperature measurement with gas measuring technology at the highest
configuration level.
This method uses state-of-the-art processing methods to evaluate the signals from the gas
sensor and scattered light sensor or thermal sensor.
Security against false alarms is thus increased significantly and detection time is reduced in
comparison with the fire detectors generally available on the market today.
Thanks to the higher information content of the multisensor detectors, the use of detectors is
possible in environments where pure smoke detectors cannot be used.
The detectors are available in the following configuration levels:
– FCP-OC320: Combined optical, gas-sensitive smoke detectors
– FCP-OT320: Combined optical, thermal smoke detectors
– FCP-O320: Optical smoke detectors
– FCH-T320: Thermal detectors.
The detector's timeless and innovative design is a result of the cooperation between engineers
and designers. With this design it is possible to reconcile the contradictory goals of a
generous installation space and a small detector.
The placement of the individual display on the detector tip is the first externally visible
characteristic of the installation-friendly development concept. The stable and robust detector
base need no longer be aligned due to the position-independent position of the individual
display.
It is suitable for surface and flush cable mounting and includes separate mounting points for
dropped ceiling and concealed sockets. In addition, it fits all common bore patterns. For
surface mounting, the cable may be fed through on the side.
The integrated strain relief for interfloor cables prevents the removal of cables from the
terminal after installation. The terminals are easily accessible; a retainer for the end of line
resistor is integrated. Cable diameters of up to 2.5mm2 can be used.
It can be equipped with a damp room seal so that all installation requirements can be covered
with one base.
The 320 Series detectors are available with either a 470Ω alarm resistor or a 820Ω alarm
resistor. The operating voltage range is 8.5V DC to 30VDC, which allows the detectors to be
used with almost every common conventional fire panel.

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2 System Overview
2.1 Configuration of the Detector
1 Smoke measurement chamber with
optical sensor
6
4
5
2
1
3
Configuration of the Detector
2 Thermal sensor
3 Chemical sensor (covered on the cross-
section)
4 Individual display
5 PC board with evaluation electronics
6 Detector base
2.2 Functional Description of Sensor Technology
2.2.1 Optical Sensor (Smoke Detector)
The optical sensor uses the scattered-light method.
An LED sends light into the measuring chamber (item1); this light is absorbed by the labyrinth
structure. In the event of a fire, smoke enters the measuring chamber. The light is scattered by
the smoke particles and hits the photo diodes, which transform the quantity of light into a
proportional electrical signal.
2.2.2 Thermal Sensor (Heat Detector)
A thermistor (item2) in a resistance network is used as a thermal sensor; an analog-digital
converter measures the temperature-dependent voltage at regular intervals.
The temperature sensor switches to an alarm state if the maximum temperature exceeds
54°C (thermal maximum) or if there is a defined temperature increase within a particular
timeframe (thermal differential).
2.2.3 Chemical Sensor (Gas Sensor)
The gas sensor (item3) detects mainly the carbon monoxide
(CO) that is produced by a fire, but it also detects hydrogen
(H) and nitrogen monoxide (NO).
The underlying measurement principle is CO oxidation and the
measurable current that it creates. The sensor signal value is
proportional to the concentration of gas.
The gas sensor supplies additional information in order to
reliably suppress deception variables.
3
Chemical Sensor
2.3 System Description
Up to two detection principles are integrated into the FCP-320/FCH-320 Series Fire Detectors:
– Optical (for smoke): O
– Thermal (for heat): T
– Chemical (for gas): C

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All sensor signals are analyzed continually by the internal signal analysis electronics and are
linked with each other. If a signal combination fits the detector’s programmed code field, an
alarm is automatically triggered.
By linking the sensors (combined detectors), the detector can also be used in places where
the work carried out gives rise to light smoke, steam or dust.
The FCP-OC320/FCP-OC320-R470 detectors analyze the present CO concentration and adjust
the threshold of the optical sensor in accordance with the CO concentration. If no CO is in the
air, the alarm is triggered nonetheless at a certain level of smoke density and above. However,
the alarm is not triggered if only CO is detected in the air.
The FCP-OT320/FCP-OT320-R470 detectors trigger an alarm in the case of smoke as well as in
the case of a temperature rise. Additionally, the threshold of the optical sensor is adjusted in
accordance with the absolute temperature and the rate of temperature rise.
2.4 Features
– Active adjustment of the threshold (drift compensation) if the optical sensor becomes
contaminated.
– Active adjustment of the threshold (drift compensation) of the chemical sensor.
– Activation of a remote external detector alarm display is possible.
– Optional mechanical removal safeguard (can be activated/deactivated).
– Dust-resistant labyrinth and cap construction.
– Every detector has a “Chamber Maid Plug” (a cleaning opening with a plug) for blowing
out the optical chamber with compressed air (not required for the FCH‑T320/
FCH‑T320‑R470/FCH‑T320‑FSA Heat Detectors).
– Connectable to Bosch fire panels and the majority of conventional fire panels available on
the market.
– Two variants with 820Ω alarm resistor and 470Ω alarm resistor enables the detector
application with nearly all conventional fire panels.
– An unshielded cable may be used for the primary line.

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3 Planning
i
Notice!
FCP-320/FCH-320 Conventional Automatic Fire Detectors are not designed for exterior use.
3.1 Basic Planning Guidelines
– The planning of multisensor fire detectors takes place according to the guidelines for
optical detectors, until an independent guideline has been worked out with the VdS (see
DIN VDE0833 Part2 and VDS2095):
– Maximum monitoring area 120m2
– Maximum installation height 16m.
– Maximum permitted air speed: 20m/s.
– A maximum of 32 detectors can be connected per primary line. This number is limited to
20detectors when connected to an UGM2020 (GIF/GIF2).
3.2 Use in Fire Barriers Conforming to DIBt
The FCH‑T320‑FSA and FCP-O320 are available for use in fire barriers conforming to the
guideline of the DIBt (Deutsches Institut für Bautechnik/German Institute for Building
Technology).
When planning for fire barriers conforming to DIBt, the FCH-T320‑FSA detector has already
been set to class A1R.
Both models have DIBt approval.

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4 Installation
4.1 Overview of Detector Bases
The FCP-320/FCH-320 Series detector head is used in one of the following listed detector
bases, which are suitable for both flush-mounted and surface-mounted cable feed. They have
separate attachment points for ceiling mount/flush-mounted back boxes. In addition, they fit
all standard bore patterns.
The detector bases are made from white ABS plastic (color similar to RAL9010) and have a
matte surface finish.
The bases have screw terminals for connection of the detector and its accessories to the fire
panel. Contacts connected with the terminals provide for a secure electrical connection when
mounting the FCP-320/FCH-320 detector heads. Cables up to 2.5mm2 can be used.
To protect against unauthorized removal, the detector head can be secured with a variable
locking.
MS400
The MS400 Detector Base is the standard detecor base. It has
seven screw terminals.
MS400B
The standard MS400 Detector Base with Bosch-branding.
FAA-420-SEAL
Seal for using the MS400 and MS400B detectors in a humid
environment. The TPE seal protects the detector reliably against
the penetration of condensed water.
MSR320
The MSR320 Conventional Detector Base with Relay is provided
with an integrated relay that has NO/C/NC contacts for switching
applications (e.g. non EN-54 third party applications, dampers,
door holders, etc.).

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MSC420
The MSC420 Additional Base was designed specially for surface
mounted cable feed via cable protection conduits. It is used in
combination with any of the above listed bases. It has two
opposing pre-cut inlets of 20mm diameter and two additional
opposing and prepared inlets for up to 28mm diameter.
The additional base has a diameter of 120mm and a height of
36.7mm.
To protect against condensed water penetration, a seal made of
TPE is situated on the base of the MSC420.
4.2 Overview of Detector Base Sounder
Detector base sounders are used if the acoustic signaling of an alarm is required directly at
the location of the fire.
– MSS300 Base sounder white, for conventional
technology, connection via the detector C point.
– MSS300 WH-EC Base Sounder, white for conventional
technology, with external activation.
The integrated tone generator has 11 tones for selection (incl.
tones according to DIN33404 and EN457) with sound
pressure of max. 100dBA, depending on the type of tone
selected.
The tone type on conventional variants is set via four DIP
switches and the volume adjusted continuously via a
potentiometer.
Surface mounted and flush mounted cable feed are possible.
4.3 Mounting the Bases
The detector bases are screwed to the even, dry surface using two screws approx. 55mm
apart.
In the case of cable feed for surface mounting, break out the prepared entry points (X) on the
housing.
In the case of flush mounted cable feed, route the cable through the opening in the centre of
the base.
The short mounting bores marked in the sketch with “Y” may be used only for fixing over a
back box.
i
Notice!
Cable feed and outfeed can be on the same side.
For cable feed at the FAA-420-SEAL and MSC420 puncture the sealing with a pointed tool.
Do not cut the sealing with a knife.

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Ø 100
X
Ø 120
147.8
22.7
Y
Y
55
4.4 Wiring
i
Notice!
Keep screening wire as short as possible and insulate it.

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4.4.1 Wiring MS400/MS400B
max. 3 m
C
a1/a2
(LSN -/L..a)
LSN +/L..b
rd + bk
–
max. 30 V DC
wh
bk
bk
rd
gn
ye ye
b1}
b2
FAA-420-RI
ye yellow, connects to b1/b2 + / L..b (conventional)
wh white, connects to a1/a2 - / L..a (conventional)
rd red, connects to +V
bk black, connects to 0V
gn green, connects to shielding wire
c Indicator output
+V / 0V Terminals for looping through the power supply to subsequent elements
FAA-420-RI Remote Indicator
i
Notice!
When using unshielded cables for the connection of the remote indicator, the maximum cable
length is 3m. No limitation when using shielded cables.

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4.4.2 Wiring MSR320
Maximum contact load (resistive load) of the change-over relay:
– 62.5VA: 0.5A at 125VAC
– 30W: 1A at 30VDC
NO
NC C
c
C
a1 | a2
b2
b1
COM
NC NO
wh
gn
ye ye
1 A / 30 V DC
0,5 A / 125 V AC
V–
V+
ye yellow, connects to b1/b2 V+
wh white, connects to a1/a2 V-
gn green, connects to shielding wire
NC / C / NO Changeover relay (for the MSR320 only)

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4.4.3 Wiring MSS 300
blue
blackred
b2
b1
ca1/
a2
red black blue
MSS 300
a1 / a2 L . . . a (conventional) / LSN -
b1 , b2 L . . . b (conventional) / LSN +
CRemote indicator output
screen wire (has to be isolated and as short as possible)
red 24V DC power supply for the first and the second tone.
black for activating the first tone.
blue for activating the second tone.
4.5 Installing the Detector Head
i
Notice!
The packaging for the multisensor detector with C sensor consists of tear-proof PE-ALU
laminated film and must be cut open carefully.
After installation and connection of the base, the detector head is set into the base and turned
to the right as far as it will go.
Detector bases are delivered with inactive locks.
The detector head can be locked into the base (removal protection). The locking feature is
activated by breaking the bolt (X) out of the base and pushing it into the corresponding guide,
as shown in , page 14 .

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X
X
1 2 3
X
X
Figure4.1: Activating the Removal Protection
1 Bolt (X) prior to breaking out
2 Bolt (X) installed but inactive
3 Locking activated
4.6 Detector Removal
Unlocked detector heads are disassembled by turning them to the left and removing them
from the base.
Locked detector heads are disassembled by inserting a screwdriver into the unlocking opening
(Y) so that the bolt is pushed upward; at the same time, the detector head should be turned
to the left.
Y
Figure4.2: Detector Removal (Locked Detector)

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5 Accessories
5.1 EOL Module for Line Termination According to EN 54-13
FLM-320-EOL2W EOL-Module
The FLM-320-EOL2W EOL module is a 2-wire module for
terminating a conventional line.
It detects faults in the line and transmits a notification to the
fire panel display.
For a conventional connection one line must not contain
more than 32 automatic detectors.
5.2 Support Plates for Detector Identification
The support plates are made from 1.8mm thick ABS plastic and are clamped between the
detector base and the ceiling.
TP4 400 Support Plate
The TP4400 Support Plate is intended for an installation
height up to 4m and is designed for labels up to a size of
approximately 65x34mm.
15 / 4
TP8 400 Support Plate
The TP8400 Support Plate is intended for an installation
height up to 8m and is designed for labels up to a size of
approximately 97x44mm.
5.3 SK400 Protective Basket
The SK400 Protective Basket is installed over the detector
and gives the detector substantial protection against
damage.
If the detector is mounted in a sports facility, for example,
the protective basket prevents balls or other sports
equipment from hitting the detector and damaging it.

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5.4 SSK400 Protective Dust Cover
The SSK400 Protective Dust Cover is necessary during
construction work to protect an installed detector base,
with or without upper detector section, from contamination.
The protective dust cover made from polypropylene (PP) is
pushed onto the installed detector base.
5.5 WA400 Detector Console
The WA400 Detector Console is used to install detectors
above door frames or similar in compliance with DIBt.
The console is supplied with a pre-mounted MS400
Detector Base (the detector shown is not included in the
scope of delivery).
5.6 MH400 Detector Heating Element
The MH400 Detector Heating Element is required if the
detector is used in an environment where water
condensation can occur, such as in a warehouse that must
frequently be opened briefly for delivery vehicles.
The detector heating element is connected to the +V/0V
terminals in the detector base.
Operating voltage: 24VDC
Resistor: 1kΩ
Maximum power dissipation: 3W.
The heating is supplied with power either by the looped-
through supply voltage via the control panel or by a separate
power supply unit.
With supply via the control panel, the number of detector
heating elements depends on the cable cross section and
cable length used.
5.7 Remote Indicators
A Remote Indicator is required if the detector is not directly visible or has been mounted in
false ceilings or floors.
The remote indicators should be installed in corridors or access pathways to the
corresponding building sections or rooms.
Wiring
For connection to the standard bases MS400/MS400B note the following:
i
Notice!
When using unshielded cables for the connection of the remote indicator, the maximum cable
length is 3m. No limitation when using shielded cables.

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FAA‑420‑RI‑ROW
1. Wire the remote indicator as shown.
2. Place the cap on the base plate in such a way that the two hooks are inserted into the
slits.
3. Press the cap lightly onto the base plate until the snap‑fit‑hook engages.
FAA‑420‑RI‑DIN
!
Warning!
Malfunction and Damage
Note the maximum permitted current supply respectively the input voltage range of the
functional modes.
4Wire the remote indicator as shown.
Mode Terminal connection Alarm condition
1
+
The remote indicator shows steady red light.
2
+
The remote indicator shows steady red light.

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Mode Terminal connection Alarm condition
3
+
The remote indicator shows flashing red light.
Operate in mode 1 and 3 only, when connected to LSN detectors.
1. Place the cap on the base plate in such a way that the two hooks are inserted into the
slits.
2. Press the cap lightly onto the base plate until the snap‑fit‑hook engages.
Installation of the FAA-420-RI Remote Indicator
!
Warning!
Malfunction and Damage
If maximum current feed of the connected detector is larger than 30mA, it can result in
malfunction and damage to the remote indicator.
a) Ensure, that the maximum current feed of 30mA is not exceeded
b) Use point‑type automatic Bosch detectors, which have an internal resistor that limits the
current consumption.
Before assembly remove the cap from the base plate
1. Unlock the snap‑fit hook by pressing on it with a flat object and lift the cap carefully
2. Remove the connection board for easy access.
3. Mount the base plate directly on a dry, level surface with two or four screws.

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1. For surface-mounted cables, break out the prepunched cable entries.
2. For flush-mounted cables, insert the cable through the opening under the connection
board.
3. Secure the cable with a zip tie on the base plate.
Technical specifications
FAA‑420‑RI‑ROW FAA‑420‑RI‑DIN
Operating Voltage depends on current feed – Operating mode 1:
depends on current feed
– Operating mode 2:
8,5 to 33 V DC