Anie BEINAT BX449F User manual

CONFORMITY
Installation
and user guide INSTALL IN SAFE
AREA, NO ATEX
EN 50270
EN45544-1-3
EN61010-1
ConformeEN60079-29-1
Reports issued by Eurofin Italia
Din omega modular Gas/Fire control unit 4 Conventional zones
BX449F V3

With a
maintenance program
Belonging to
BEINAT S.r.l. always attentive to the needs of the market and new technologies, has overhauled a previous
versatile control unit, BX449F, for GAS and/or FIRE detection for industrial applications. To which can connect
sensors to detect: Toxic / Explosive Gases, Oxygen, and to detect fire principles.
Gas detection
The control unit has two danger levels:
1st LEVEL, pre-alarm. This is set at 13% of L.E.L. (200ppm) for all sensors.
2nd LEVEL, main alarm. This is set at 20 % of L.E.L. (300ppm) for all snsors.
To facilitate event readings, the control unit has a front panel with 4 LEDs indicating which probe is currently being
monitored in rotation, and a display showing the gas concentration measured on each pass.
GAS configurations
Connection from 1 to 4 conventional sensors, for different types of GAS up to max 4 sensors, 1 for each zone.
Fire detection
To the BX449F you can connect up to 5 fire detectors per each zone, either temperature or optical smoke detectors,
through a balanced line:
Optical smoke detectors, Temperature, Velocimetric temperature
The control unit’s microprocessor checks the detectors and connection line efficiency, open or short-circuited.
When the sensors detect a fire, theyl switch the proper relay.
FIRE configurations
Each zone can be connected up to a Max 5 sensors, even mixed, Smoke or Temperature, for a total Max of 20.
Automatic recognition of the type of probe connected, be it GAS OR FIRE.
Configurations Mixed GAS FIRE
For each zone assigned, the detection of only GAS or FIRE can be connected without distinction
OXYGEN configurations
When the operation is selected to detect OXYGEN, other types of sensor cannot be connected.
OXYGEN ALARM for <Oxygen deficiency and> Oxygen Excess
For oxygen pre-alarm and main alarm levels, see references on page 5.
Maintenance TEST.
With special measures, the function can be enabled to exclude the alarm relay for a maximum duration of 60
minutes. This allows the technician to perform all functions without having to interrupt the gas flow or activate sirens
Important: Assembly / maintenance of the appliance must be carried out by qualified personnel
and in accordance with applicable laws and regulations.
The manufacturer assumes no responsibility for the use of products that have to comply with
particular environmental and / or installation standards.
Important note
Before connecting the equipment, it is recommended that you read the instruction manual carefully
and keep it for future reference. It is also recommended to perform the electrical connections
correctly as per enclosed drawings, observing the instructions and the Standards.
N.B. Refer to the documentation in all cases where the symbol is on the side
Channel: Beinat gas solutions
Electricconnectionsalsoavailableon

Page 2
90 mm
45 mm
37 mm
90 mm
45 mm
159 mm
FaultMain AlarmPre Alarm BX449F probes battery
RESET TEST
Explosive Toxic
000LEL
ppm
1 2 3 4

OVER LOAD
1
2
3
4

OpenLine
CloseLine
FIRE
Alarm
Precautions
CHECK the integrity of the unit after having removed it from the box.
Check that the data written on the box correspond to the type of gas used.
When doing the electrical connections, follow the drawing closely.
Any use of the detector for purposes other than the intended one is considered improper,
and as a result of which BEINAT S.r.l. therefore disclaims any responsibility for possible
damages caused to people, animals or objects.
IMPORTANT: the functional test must not be carried out with the gas tap open as this does not guarantee
sufficient concentration to activate the main alarm.
TERMS and EXPECTATIONS: The installation of the BX449F control unit, its ordinary and extraordinary
maintenance, every six months, and its out of service removal at the end of the functional life guaranteed by
the manufacturer, must be carried out by authorized or specialized personnel.
Do not allow it to become wet.
The unit can be seriously damaged as it is not waterproof so when immersed in water or exposed to high
humidity levels.
Do not drop it.
Heavy knocks or falls during transportation or installation can damage the appliance.
Technical Specifications
Main power ........................................................................................... 110/240VAC 50/60Hz ±10%
Insulation ..................................................................................................................... Class II
Secondary Power Through Battery Max 2,2 Ah (Optional) ........................................................ 12 V ±10%
Battery charger max. 2.2 Ah ..................................................................................................... Controlled
Power demand ....................................................................................................... 11W max. 230 VAC
Power demand ........................................................................................................ 6W max. @ 12 VDC
Range of the contacts on the gas pre-alarm, alarm and fault relay ............................... 10A 250 VAC resistive
Range of the contacts on the fire alarm relay ............................................................ 10A 250 VAC resistive
Detection
Pre alarm ......................................................................................... 13% of L.E.L. or 200 ppm for CO
Final alarm .............................................................................. Set to 20% of L.E.L. or 300 ppm for CO
The LEL is calcuaded for Gas Methane .................................................................... 5000 ppm = 5% V/V
Data refresh ............................................................................................................................ 2 ms
OXYGEN alarm ............. <Oxygen deficiency,> Excess Oxygen ......................... see thresholds on page 5
Monitored events .................................................................................... Through backlit color display
Zones ............................................................................................................................................ 4
Number of connectable gas sensors ......................................................................... 4 (1 for each zone)
Types of conventional gas sensors ....................... Semiconductor, Catalytic, Electrochemical cell, Pellistor
Number of connectable fire sensors ....................................................................... 20 (5 for each zone)
Types of fire sensors connectable ......................... Optical smoke - fixed temperature - increment temperature
Micro-switches to include or exclude the gas sensors, Exclusion only for CO ....................... 1 for each zone
Microswitches to select the OXYGEN detection ................................................... ................ incorporated
Microswitches to display ............................................... ......................... Over Range and Under Range
Type of faults detected by fault circuit ..................................................... Interruption, short circuit, or wear
OVER LOAD Check .....................................................................................................1 for each sensor
OVER LOAD Check ............................................................................................................ 1 for battery
Input signal GAS................................................................................................. 4 ÷ 20 mA on 220 Ohm
Input signal FIRE....................... 2.2 VDC at rest, 8.7VDC in alarm, 13.92 VDC with short-circuited cables
Functioning temperature ................................................................................................. -10°C ÷ +60°C
Waiting, blinking time (warm-up) ................................................................................. About 2 minutes
Manual test ............................................................................................................................. Built in
Max. distance between sensors and unit ..................................................................................... 100 m
Max. distance between battery and unit.......................................................................................... 0,5 m
Cable diameter to connect the senors ....................................... .................................................. 1 mm2
Connection: The cable of connection of the sensor must not be installed together with the power cables.
Otherwise, make sure to use a shielded cable
Omega-type size DIN EN 50092 9 modules ................................................................................. 158*90*58
Degree of protection .................................................................................................................... IP20

Protec. Zone Detected Working Automatic
Application in:
Domestic: family accommodation. Local boilers up to 70 kW-h
Tertiary Areas: Large Rooms Boilers, Workshops, Material Deposits, Industrial Kitchens, Large Buildings, Buildings.
Zone 2 - Mixed IP66 ATEX: High probability of escape, high risk locations, premises for which applicable regulations apply.
Zone 1 - Hazardous Area, High Risk Hazards, Rooms for Which Regulations, Tanks, Control Valves are in force.
Probe Sensor Degree Suitable for Gas Range Output Precis. Calibration Relay
FIREDETECTORS
RF500 Optical Smoke Detection - ECO EC500 Series Optical Smoke Detection
RF570 Fixed Temperature Detection at 70 ° C - ECO EC500 Series Fixed Temperature Detection at 70 ° C
RF540 Increased Temperature Detection - ECO EC540 Series Increased Temperature Detection -
ZF300 Universal socket - Series ECO ZFC200 universal socket - Series ECO ZFRC250 Universal socket with relay
SG500 Ca talyt ic I P 3 0 Domestic Use C H 4 - LP G 0÷100% LEL 4÷20 mA ±5 % N O N O
SG544 Ca talyt ic I P 4 4 Tertiary C H 4- L P G 0÷100% LEL 4÷20 mA ±5 % N O N O
SGM595 Catalytic I P 5 5 Tertiary See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s N O
SGM595/A Catalytic I P6 6 Zone 2 See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s N O
SGM533 Catalytic I P 5 5 Tertiary See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
SG800 Catalytic I P6 6 Zone 2 See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
HCF100 SemiCondut I P 5 5 Tertiary F R E O N 0÷300% ppm 4÷20 mA ±5 % N O Y e s
SG895 Pellistor ATEX Zone 1 See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s N O
SG580 Catalytic I P6 6 Zone 2 See catalogue 0÷100% LEL 4÷20 mA ±5 % Y e s N O
SGF100 Catalytic I P6 4 Zone 2 Methane 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
SGF102 Catalytic I P6 4 Zone 2 L P G 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
SGF104 OpticalFluores I P 6 4 Zone 2 Ox yg en In % 4÷20 mA ±5 % Y e s Y e s
SGF106 SemiCondut I P 6 4 Zone 2 F R E O N 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
SGF108 ElectrochemicalIP64 Zone 2 H 2 S 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
SGF110 ElectrochemicalIP64 Zone 2 C O 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
SGF112 Catalytic I P6 4 Zone 2 Hydrogen 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
CO100r ElectrochemicalIP55 Tertiary C O 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
CO100Ar ElectrochemicalIP66 Zone 2 C O 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
SG800duct Catalytic I P6 6 Zone 2 C H 4 L P G 0÷100% LEL 4÷20 mA ±5 % Y e s Y e s
CO200duct ElectrochemicalIP66 Zone 2 C O 0÷300% ppm 4÷20 mA ±5 % Y e s Y e s
Page 3
The installation of the detector does not exempt from the compliance with all regulations concerning the characteristics,
installation and use of gas appliances. The ventilation of the spaces and the elimination of combustion products are described
in the UNI norms according to ART. 3 LAW 1083 / 71 and relevant legal provisions.
Gas
1) Put out all free flames.
2) Close the main gas tap or the LPG cylinder tap.
3) Do not turn any lights on or off; do not turn on any electrical device or appliance.
4) Open windows and doors in order to increase ventilation.
If the alarm stops, its cause must be found and the relevant consequent measures taken.
If the alarm continues and the cause of gas presence cannot be found or removed, abandon the building
and call the emergency services when outside (fire department, distributors, etc.)
IMPORTANT: lproof operation should not be carried out with the gas tap since this does not guarantee a
sufficient concentration to activate the alarm.
Fire
*Keep calm
*Open the windows and request assistance
*Do not turn lights on or off, do not operate electrically powered equipment and devices
*If possible, press the nearest emergency button.
*If possible use the nearest fire extinguisher, do not use foam extinguishers or water near electrical devices
or directly on switchboards.
*If the fire developed in an environment, get out, closing the door.
*If the fire is in another room and the smoke makes impracticable stairs and corridors, close well the
doors and try to seal fissures using possibly wet cloths.
*If the smoke makes breathing difficult, ffilter the air through a handkerchief, (better if wetted), lie on
the floor (ithe smoke tends to rise to the top).
*If the alarm stops, is necessary to identify the cause that provoked and act accordingly.
*If lthe fire continues and the cause is not vacate the building and abandon the building and call the emergency
services when outside
WARNING! Actions to be taken in case of alarm

- Power supply 110/240 VAC
- Controls up to 4 remote sensors, referred to Gas
- Manages explosive and toxic gases.
- Controls up to 20 remote sensors, referred to Fire
- Manages smoke and temperature sensors
- Manual alarm managed by remote button
- Various possibilities of parameter configuration
- Status indications with LED
- Output signals in alarm supplied via 2 relays, referred to gas
- Output signals in alarm supplied via 1 relay, referred to fire
- Fault output signals supplied via 1 relay, referred to gas and fire
- wall support 6 DIN modules.
- Conforms to the operating regulations EN60079-29-1
The BX449F is a control unit capable to control the concentration of gas up to 4 input channels, each of
which can be connected via a 4-20 mA communication to a toxic or explosive gas detection/measurement
device. The control unit is built with the following I/O interfaces.
page 4
Instructionmanual
{a} OVERVIEW
{b} GENERAL DESCRIPTION
1) Group of two switches.
DIP-SWITCH 1. Used to enable the OXYGEN DETECTION. ON ENABLED, OFF DISABLED.
In this condition the display turns blue and the LEDs (6 and 7) "Explosive and Toxic" turn off. OTHER TYPES OF
DETECTION ARE NOT POSSIBLE
DIP-SWITCH 2. Used to enable the deadband zone suppression for all sensors
Setting this two switch ON or OFF it is possible to enable or disable the suppression of the signaling of any under
range in the input signal at the corresponding input.
Instead, over ranges will always be reported.
The condition is signaled by the flashing of the "Explosive Gas" LED of the corresponding input. (7)
In this case, pressing the "TEST" button you will nsee that the detection starts at minus 29 ppm.
2) Group of three switches.
DIP-SWITCH 1. RELAY MODE. Used to select the relay working mode: Continuous or Pulsed
ON: PULSED - OFF: CONTINUOUS.
DIP-SWITCH 2. MEMORY LOG. Used to enable or disable memory logging.
ON ENABLED, OFF DISABLED. Warning! It is possible to disable the function only for the toxic gas detection
DIP-SWITCH 3. POSITIVE SAFETY. Used to select positive safety.
ON ENABLED, OFF DISABLED.
Main AlarmPre Alarm BX449F probes battery
RESET TEST
Explosive Toxic
000LEL
ppm
1 2 3 4
6
5
2
4
811
OVER LOAD
1
2
3
4

OpenLine
CloseLine
FIRE
Alarm
15
1
13
2under Range
1oxygen
14
Fault
sensor 1
sensor 2
sensor 3
sensor 4
3positive safety
2memory on/off
1working mode
7
9
12
3
10 16
Control unit from 1 to 4 conventional sensors BX449F Rev. 3
DIP-SWITCH of the deadband suppression of the sensor 1 and 2

3) Group of four double switches to select sensor and type of gas.
DIP-SWITCH 1. Sensor 1 - DIP-SWITCH 2. Sensor 2 - DIP-SWITCH 3. Sensor 3 - DIP-SWITCH 4.
Sensor 4
Setting the first switch of each group to ON or OFF enables or disables the corresponding input.
Setting the second switch of each group to ON or OFF switches to detect from explosive gas to toxic.
Depending on the type of gas, appears on the display LEL for explosive gases or ppm for toxic gas and the
corresponding LEDs light up (6/7)
WARNING! When a sensor is excluded, all the memories will be restored.
5) RESET BUTTON
A "RESET" button allow the user to cancel the events that occurred and are contained in the memory by an
intentional manual reset action.
Warning!
Pressing the RESET button once only resets the alarm and fault memories.
Pressing three times in succession restarts the entire system.
000
1 2 3 4
LEL
0 13
1 2 3 4
LEL
020
1 2 3 4
LEL
fau
1 2 3 4
LEL
4) TEST BUTTON, to check the operation of the entire system, TOXIC Gas
Press the "TEST" button its displays the progressive increase in the ppm followed by the
number of the monitored sensor.
When the pre-alarm of 200 ppm is reached, the display changes color to red, the preset relay
switches its status and the buzzer emits an intermittent low frequency sound, the corresponding
LED (13) lights up and the sensor number stays for a few seconds.
Keeping the button pressed, the in ppm increases until it reaches the main alarm of 300 ppm,
the preset relay switches its status and the buzzer emits an intermittent high frequency sound,
the corresponding LED (12) lights up and the number of the sensor stays for a few seconds.
Continuing to hold the% in ppm button increases until reaching the Over Range FAULT
Releasing the "TEST" button turns off the lights and stops the acoustic alarm
000
1 2 3 4
ppm
200
1 2 3 4
ppm
300
1 2 3 4
ppm
fau
1 2 3 4
ppm
4) TEST BUTTON, to check the operation of the entire system, OXYGEN Gas
Press the "TEST" button the control unit starts in alarm on the red Display appears 00.0
and you see the progressive increase of% of oxygen, followed by the number of the monitored
sensor.
When the pre-alarm of 19.5% of oxygen is reached, the preset relay switches its status and
the buzzer emits an intermittent low frequency sound.
Continuing to keep the button pressed, the oxygen percentage increases up to the percentage
of oxygen 20.9%; Ideal percentage for a civil environment.
When 22.5% is reached, it enters the pre-alarm condition, the preset relay switches its
status and the buzzer emits an intermittent low frequency sound.
When 23.5% is reached, it enters the alarm condition, the preset relay switches its status
and the buzzer emits an intermittent high frequency sound.
Keeping the TEST button pressed, the% of the LEL increases until it reaches the Over Range
FAULT
Releasing the "TEST" button turns off the lights and stops the acoustic alarm fau
1 2 3 4
%
22.5
1 2 3 4
%
23.5
1 2 3 4
%
20.9
1 2 3 4
%
19.5
1 2 3 4
%
00.0
1 2 3 4
%
4) TEST BUTTON, to check the operation of the entire system, EXPLOSIVE Gas
Press the "TEST" button and its displays the progressive increase of the % of the LEL followed
by the number of the monitored sensor.
When the 13% of LEL of the pre-alarm is reached, the display changes color to red, the preset
relay switches its status and the buzzer emits an intermittent low-frequency sound, the
corresponding LED (13) lights up and the sensor number stays for a few seconds.
Continuing to keep the button pressed, the % of gas increases up to the 20% of LEL of the
main alarm, the preset relay switches its status and the buzzer emits an intermittent high
frequency sound, the corresponding LED lights up (12) and the sensor number stays for a few
seconds.
Keeping pressed the button of the% of the LEL will go up until you reach the Over range FAULT
Releasing the "TEST" button turns off the lights and stops the acoustic alarm
page 5

6) TOXIC GAS LED selection .
Turning on, this LED indicates that the corresponding input is configured to detect toxic gases.
7) EXPLOSIVE GAS LED selection .
Turning on, this LED indicates that the corresponding input is configured to detect explosive gases.
WARNING! The flashing of this LED can also indicates the presence of under/over range entering the
corresponding input.
8) LED OVERLOAD BATTERY
This LED lights up when there is a short circuit or excessive absorption in the backup battery supply lines.
9) LED OVERLOAD SENSOR
This LED lights up when there is a short circuit or excessive absorption in the sensor supply lines.
10) Color backlit display to control all functions.
a) The battery icon turn on when the BX449F is powered by an external battery.
The battery icon also indicates the charge status of the battery , when itflashes the battery is low.
b) The % symbol on the display is reserved for oxygen detection.
c) The numbers indicate the detected gas concentration or mean some
warnings.
d) The numbers from 1 to 4 represent the sensors. These light up every
2 seconds.
e) The ppm turn on when the sensor is detecting toxic gas.
f) The LEL turn on when the sensor is detecting explosive gas.
g) The clock, the timing icon turns on when the control unit is in the Warm
up phase, the display starts the count down.
11) FAULT LED. This LED blinks when one of the connected sensors is faulty, if there is an interruption in the
cable connection, or if an error was made during wiring.
The sensor can be identified by reading on display the number from 1 to 4.
When this LED is on, the device is no longer capable of detecting, and stops.
To reactivate the device, the damaged probe must be repaired or disabled using the internal micro-switch, and
then the RESET button must be pressed. (See chapter on page 6)
12) LED MAIN ALARM
This LED starts to flash when the gas concentration level reaches the main alarm threshold (20% LEL for
explosive gases, 300 ppm for toxic gases).
This signal is the "latching" type and maintains its status until the "RESET" button is pressed, for compatibility
with the current performance standards.
13) LED PRE-ALARM
This LED lights up when the gas concentration level reaches the second pre-alarm threshold (13% LEL for
explosive gases, 200 ppm for toxic gases).
This signal is the "auto-reset" type.
14) SENSORS. This number represents the gas sensor connected from 1 to 4.
000 all ope clo
Normal condition
The display with color
green, represents an
absence of fire detection
Fault condition
The display shows that
the connection line is
short-circuited or that
the sensor is fault
The BX449F , in addition to detecting various gas types, is also built for fire detection
Up to 5 fire detectors can be connected to each zone via a balanced line up to a maximum of 20 detectors,
Smoke optics, Temperature, Velocimetric temperature
The microprocessor of the control unit controls both the efficiency of the detectors and the connection
line, open or short-circuited.
If necessary in case of fire or fault by switching the appropriate relay.
15) Section reserved for Fire detection.
Fault condition
The display shows that
the connection line is
open, or thatthe
sensor is fault
Alarm condition
The display with red
color represents a fire
alarm. Check from the
display in which area
e
000
cf
ppm
LEL
a

1 2 3 4 d
%
b
g
page 6
FIRE
1 2 3 4

- FAULT RELAY: this "latching" relay switches when there is an error signal from the connected sensor (see
image below).
- PRE-ALARM RELAY: this "autoreset" relay switches when the detected gas concentration exceeds the second
pre-alarm threshold.
- MAIN ALARM RELAY: this "memory" relay switches when the detected gas concentration exceeds the main
alarm threshold.
WARNING!
All relay outputs of the control unit are voltage free.
The maximum range of such contacts is specified in the next chapters.
btn
16) External manual alarm button.
The control unit is designed to be connected to a manual alarm button.
Pressing the button the control unit will go directly into alarm even when it is in programming
or warm up status; Closing all the auxiliaries connected to it.
When pressed, BTN appears on the display and turns red.
page 7

ELECTRICAL CONNECTION
- Terminals 1, 2 and 3: Main power supply
- Terminals 4 and 5: Fault relay contacts
CNC
NO CNC
NO
CNC
NO
1 2 3 4 5 6 7 8
GAS Main Alarm Fire Main Alarm
Pre-Alarm
C
NC
NO
PH N 4 5
Fault
Power supply
110/240 VAC
12V
+ +
Optional
R1 R2 R3 R4
1 2 3 4 5 6 7 8 9 10
3 2 1
Sensor 1 3 2 1 Sensor 2 3 2 1 Sensor 3 3 2 1
Sensor 3
- Terminals 1 and 2: GAS pre-alarm threshold relay contacts
- Terminals 3,4 and 5: GAS main alarm relay contacts
- Terminals 6, 7 and 8: Main alarm relay contacts
a) Connect terminal 1 to ground, terminal 2 to phase, terminal 3 to neutral.
b) Power the system only when all the parameters have been configured.
c) Connect the desired utilities to the output relays described above according to your needs.
Then connect the sensors and the battery (optional) to the signal terminal block
The signal terminal block for the GAS detection (previous figure) is composed as follows:
- Terminals 1 and 2: Optional back-up battery connection.
- Terminals 3 and 4: Sensor power supply. The voltage is generated by the control panel.
- Terminals 5, 6, 7 and 8: Connection return signal of 4-20 mA GAS sensors.
- Terminals 9 and 10: Connection of the optional manual alarm button.
WARNING! The optional battery is charged directly by the control unit.
This control unit can connect a maximum of 4 sensors.
Each conforms to the 4-20 mA current loop system on this terminal block.
Connect the sensors as shown in the figure
page 8
{c} OPERATING INSTALLATION INSTRUCTIONS
WARNING!
The installation parameters modification must be performed by qualified personnel
Be sure to disconnect the controller from the power supply before making changes to
the connections

The signal terminal block for the FIRE detection (previous figure) is composed as follows:
- Terminal 1 and 2: Optional back-up battery connectione.
- Terminal 4: Positive detector power supply. The voltage is generated by the control unit.
- Terminals 5, 6, 7 and 8: Connection of fire detectors return signal
- Terminals 9 and 10: Connection of the optional manual alarm button.
WARNING! The optional battery is charged directly by the control unit.
This control unit can connect a maximum of 5 fire detectors for each zone.
Each conforms to the 4-20 mA current loop system on this terminal block.
Remember to set the end of line resistance from 1K2
12V
1 2 3 4 5 6 7 8 9 10
+
Optional
+Z1 Z2 Z3 Z4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
12
3
4
End of line resistance 1K2End of line resistance 1K2
1 2 3 4 5 6 7 8 9 10
12V
+
Optional
+R1 R2 R3 R4
1
3
512
3
512
3
512
3
5
12
3
5
2
End of line resistance 1K2
FIRE DETECTORS SERIES "ECO"
FIRE DETECTORS SERIES "NORMAL"
page 9

SELECTION OF THE TYPE OF GAS MONITORED BY EACH PROBE
The BX449F is fitted with four micro-switches in order to select the type of gas that the connected probes should
monitor.
The LEL explosive gas reading is obtained by shifting the switch to ON.
The ppm toxic gas reading will be obtained by shifting the switch to OFF.
ACTIVATION AND DEACTIVATION OF THE SENSORS
Through Micro switches on the control unit can enable or disable the 4 Zones.
You can connect up to 4 sensors GAS (1 for each zone)
Or, you can connect up to 20 FIRE detectors (5 for each zone)
Mixed connections Gas Fire
In the configuration Mixed Gas Fire every single zone can be connected indistinctly with:
only GAS
only FIRE.
The recognition of the gas or fire detectors takes place automatically
N.B. The microswitches are also used for disabling the sensor in case of fault.
page 10
Micro-switches (1) to enable or to disable the sensors.
Position ON enabled - Position OFF disabled
Zone 1 Zone 2 Zone 3 Zone 4
Selection of the type of gas monitored by each probe
The BX449F is fitted with four micro-switches in order to select the type of gas that the connected probes should
monitor.
The LEL explosive gas reading is obtained by shifting the switch to ON.
The ppm toxic gas reading will be obtained by shifting the switch to OFF.
Zone 1 Zone 2 Zone 3 Zone 4
Micro-switches (2) to select the type of gas monitored
Position ON reading in LEL - Explosive gas
Position OFF reading in ppm - Toxic gas