ANALOX Ax60 User manual

Analox Limited
15 Ellerbeck Court, Stokesley Business Park,
North Yorkshire, TS9 5PT, UK
T: [phone] F: [phone]
W: www.analox.net E: [e-mail]
Ax60 Carbon
Dioxide Detector
Quick Start Guide - Quick
Connect Option

Ax60 Carbon Dioxide Detector
Quick Start Guide - Quick Connect Option
Document ref: P0159-801-02 September 2015 Page 2 of 16
Safety information
Warnings are used in this Quick Start Guide to indicate potentially hazardous situations
which could result in serious injury or death. Cautions are used to indicate potentially
hazardous situations that could result in equipment damage or loss of data. Notes are
used to provide information that is important but not hazard related.
WARNING: READ THE SAFETY INFORMATION IN THIS QUICK START GUIDE
BEFORE INSTALLING OR USING THE Ax60.
WARNING: DO NOT TEST THE CO2ALARM WHEN IT IS CLOSE TO THE EARS. IT
HAS A HIGH VOLUME SOUNDER WITH A SOUND LEVEL OF 88
DECIBELS AT A DISTANCE OF 3 METRES.
WARNING: DO NOT TEST THE CO2ALARM WHEN IT IS CLOSE TO THE EYES. IT
HAS A HIGH VISIBILITY STROBE LIGHT WITH A LUMINOUS
INTENSITY OF 100 CANDELA.
WARNING: ENSURE YOU PERFORM A RISK ASSESSMENT BEFORE INSTALLING
CO
2 SENSORS AND CO2ALARMS. IDENTIFY POTENTIAL SOURCES
OFCO
2LEAKS AND AREAS OF HUMAN OCCUPATION. DO NOT USE
ASINGLECO
2SENSOR TO COVER MORE THAN 80M3. USE
ADDITIONAL CO2SENSORS IF AN AREA HAS A COMPLEX SHAPE,
PHYSICAL OBSTACLES, POOR VENTILATION OR ZONES WHERE
CO
2MAY COLLECT.
WARNING: INSTALL CO2SENSORS AT A HEIGHT OF 12–18" (305–457MM)
ABOVE FLOOR LEVEL. THIS IS BECAUSE CO2IS HEAVIER THAN
AIR AND MAY COLLECT AT A LOW LEVEL.
WARNING: DO NOT OPEN THE CENTRAL DISPLAY, CO2SENSOR OR CO2ALARM
IF THEY ARE CONNECTED TO THE POWER SUPPLY. DISCONNECT
AND ISOLATE THEM FROM LIVE HAZARDOUS VOLTAGE.

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Quick Start Guide - Quick Connect Option
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Contents
1Introduction .......................................................... 4
2Installation............................................................ 6
3Components........................................................... 7
4Layouts.................................................................. 8
5Connection........................................................... 10
6Operation............................................................. 12
7Configuration....................................................... 16

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Quick Start Guide - Quick Connect Option
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1Introduction
This Quick Start Guide explains how to install and use the Ax60 Quick Connect option.
For more information on operation and maintenance, refer to the Ax60 User Manual
P0159-800. For more information on servicing and calibration, refer to the Ax60 Service
Manual P0159-803. These are available to download from http://www.analox.net/
The standard Ax60 is available as either a Hard Wired or a Quick Connect option.
This choice must be made when placing the order. Hard Wired systems are intended to
be integrated with the building fabric. Quick Connect systems are pre-wired with Cat5e
cables fitted with colour-coded RJ45 connectors for easy installation. Both require the
installer to connect the power supply unit and optional beacon to the Central Display.
The Ax60K Kiosk option is a more compact solution that offers the convenience of
Quick Connect cabling and does not require a Central Display unit.
1.1 Purpose of the Ax60
The Ax60 is a life-safety device that measures the amount of carbon dioxide (CO2) in
the air. If a CO2Sensor detects a potentially dangerous level of CO2it triggers an alarm
on the Central Display which is then announced by the CO2Alarms.
The Central Display provides real-time gas readings from each CO2Sensor together
with any alarm or fault indications. The Central Display can be easily interrogated to
show detailed information on the CO2Sensors and CO2Alarms that are connected to it.
An Ax60 Central Display can be connected to a maximum of four CO2Sensors and a
maximum of eight CO2Alarms. To extend the alarm functions, an optional beacon is
available and two alarm-relay outputs are provided for integration with other systems.
The Central Display is usually installed in a principal location (e.g. a Manager‘s office)
and connected to one or more CO2Sensors fitted in remote areas such as store rooms
or service corridors.
The CO2Sensors send alarm signals to one or more CO2Alarm units in locations where
they can be observed by management or crew. The Central Display monitors the CO2
Sensors and displays their current status and CO2measurements.
1.2 The dangers of CO2
Fresh air contains a safe level of CO2, 0.04% or 400ppm (parts per million). An increase
to 1.5% (15,000ppm) causes drowsiness, headache and increased breathing. A level of
3% (30,000ppm) causes dizziness. 10% (100,000ppm) will cause unconsciousness and
eventually death. CO2is odourless and colourless and is not detected by human senses.
There is a danger to health wherever pressurised or concentrated CO2is stored or used.
1.3 Ax60 alarm settings
The Ax60 has three alarm settings which are factory set:
Time-weighted average (TWA) alarm
–triggered by 5000 ppm (0.5%) CO2over the previous 8 hours. TWA alarm is
displayed on the CO2Sensor by a flashing red indicator LED and internal buzzer
Low alarm
–triggered by 15,000ppm (1.5%) CO2. Low alarm is announced by both the CO2
Sensor (internal buzzer) and the CO2Alarm (high-visibility strobe)
High alarm
–triggered by 30,000ppm (3%) CO2. High alarm is announced by both the CO2
Sensor (internal buzzer) and the CO2Alarm (strobe light and sounder)

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1.4 Package contents
Ax60 Carbon
Dioxide
Detector
(contents may
vary depending
on the package
ordered)
1 x Central Display, including:
1 x 2m factory fitted Quick Connect (QC) cable with white RJ45
connector (for connection to CO2Sensor)
1 x power supply unit (PSU), either hard-wired type or plug-in type
depending on the package ordered
1 x PSU securing strip (for plug-in type PSU only)
1 to 4 x CO2Sensors (depending on the package ordered) each with:
1 x 2m factory fitted QC cable with white RJ45 connector (for
connection to the Central Display or another CO2Sensor)
1 x 2m factory fitted QC cable with blue RJ45 connector (for
connection to CO2Alarm)
1 x 15m QC extension cable with 2 x white RJ45 connectors (for
larger installations)
1 to 8 x CO2Alarms (depending on the package ordered) each with:
1 x 2m factory fitted QC cable with blue RJ45 connector (for
connection to CO2Sensor)
1 x 15m factory fitted QC extension cable with 2 x white RJ45
connectors (for larger installations)
Selection of RJ45 couplers and RJ45 splitters
1 x high-visibility optional beacon (if ordered)
1 x hazard labels, information labels, templates and Quick Start Guide
Consumables
(depending on
the package)
M13 cable glands 5—7mm (nylon), quantity to suit installation
Wall plugs and screws (fixing kits), quantity to suit installation
Tools (to be
provided by
installer)
PZ1 Pozi screwdriver; 3mm flat blade screwdriver
Cat5e cable jacket stripper; 24AWG wire stripper
Drill and drill bits for wall plugs; spirit level, tape measure, ruler
Small hammer, centre punch and pliers for removing knockouts

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2Installation
CAUTION: SOME ENCLOSURES ARE SUPPLIED UNFASTENED WITH FIXING SCREWS
LOOSE. DO NOT OVER-TIGHTEN THE SCREWS WHEN FASTENING THE LIDS ON.
2.1 Central Display
Retain the clear protective film on the fascia until
the installation is complete.
Using the supplied paper template mark out the
wall-fixing position ensuring the Central Display
is level. If you are installing cable through the
rear of the enclosure, remove the knockout then
fit a foam gasket over its aperture to provide a
seal against ingress.
CAUTION: TO PREVENT DAMAGE TO THE
FASCIA AND PRINTED CIRCUIT BOARD
(PCB), REMOVE THEM FROM THE ENCLO-
SURE BEFORE REMOVING KNOCKOUT.
Drill holes in the wall then fit wall plugs / dowels.
Fasten the lid of the enclosure to the base then
fix the Central Display in position. Install the
cables in position.
Removing a knockout
To remove the knockout, place the enclosure
face down on a solid, non-slip surface. Tap the
knockout firmly using a hammer and punch. Use
pliers to remove sharp edges from the aperture.
2.2 CO2Sensor
Retain the clear protective film on the fascia until
the installation is complete. Using the supplied
paper template mark out the wall-fixing position
ensuring the CO2Sensor is level. (If installing a
cable through the rear, remove the knockout.)
WARNING: CARBON DIOXIDE GAS (CO2)
IS HEAVIER THAN AIR AND SHOULD BE
MONITORED FROM A LOW HEIGHT. YOU
SHOULD THEREFORE INSTALL THE CO2
SENSOR AT A HEIGHT OF 12–18" (305–
457MM) ABOVE THE FLOOR LEVEL.
Drill holes in wall, install wall plugs/dowels then
fit the CO2Sensor. Install the cables in position.
2.3 CO2Alarm
WARNING: LOCATE THE CO2ALARM SO
AS TO PROVIDE COVERAGE FOR ACCESS
AND EGRESS POINTS AND BUSY AREAS.
Retain the clear protective film on the fascia until
the installation is complete. Using the supplied
paper template mark out the wall-fixing position
ensuring the CO2Alarm is level. (If installing a
cable through the rear, remove the knockout.)
Drill holes in wall, install wall plugs/dowels then
fit the CO2Sensor. Install the cables in position.

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Quick Start Guide - Quick Connect Option
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3Components
The Ax60 Quick Connect option is pre-wired with Cat5e cables and colour-coded RJ45
connectors for easy connection. The Quick Connect components are shown below.
3.1 Central Display
The Quick Connect Central Display is pre-fitted
with two cable glands (see left). The gland on
the right has a 2-metre cable fitted with a
white RJ45 connector for connection to a CO2
Sensor.
The empty gland on the left is for the power
supply unit cable. A third gland must be fitted
if the optional beacon is to be installed. Both of
these cables must be fitted by the installer.
If the built-in relays R1 and R2 are being used,
another knockout should be removed from the
enclosure and an additional gland should be
fitted for the relay cables.
Pre-wired cable for connection to CO2Sensor(s)
3.2 CO2Sensor
The Quick Connect CO2Sensor is fitted with
two cable glands, pre-wired with two cables:
2m cable with white RJ45 connector for
connection to the Central Display
2m cable with blue RJ45 connector for
connection to the CO2Alarm(s)
The cable with the white RJ45 connector should
be connected to the Central Display via an
RJ45 coupler.
The cable with the blue RJ45 connector should
be connected to the CO2Alarm (which also has
a blue connector) via an RJ45 coupler (or an
RJ45 splitter if there is more than one CO2
Alarm).
Pre-wired cables for connection to the CO2Alarm (left), and to the Central Display (right)
3.3 CO2Alarm
The Quick Connect CO2Alarm is fitted with one
cable gland and a 2-metre cable with a blue
RJ45 connector. This should be connected to
the CO2Sensor associated with the CO2Alarm,
via an RJ45 coupler (or an RJ45 splitter if there
is more than one CO2Alarm).
Pre-wired cable for connection to a CO2Sensor

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3.4 Cables and connectors
The couplers, splitters, connectors and extension cables supplied with the Ax60 Quick
Connect are shown below. These provide enough flexibility for a typical installation.
CAUTION: ENSURE THAT THE MAXIMUM CABLE LENGTH BETWEEN THE CENTRAL
DISPLAY AND THE FINAL SENSOR IS NOT MORE THAN 100 METRES.
Extension cables
The extension cables supplied with the Quick
Connect are 15 metres long. The cables are
fitted with a white RJ45 connector at each end.
One 15m extension cable is supplied with each
CO2Sensor. One 15m extension cable is
supplied with each CO2Alarm.
The extension cables are used for installations
where a greater cable length is required.
The extension cables may be connected to the
2-metre pre-fitted enclosure cables, using the
supplied RJ45 couplers and RJ45 splitters.
RJ45 coupler
The supplied RJ45 coupler (left) is used to
connect two white RJ45 connectors. White RJ45
connectors are used for all Central Display-to-
CO2Sensor and CO2Sensor-to-CO2Sensor
connections.
The same RJ45 coupler is used to connect the
blue RJ45 connectors which are used for all
CO2Sensor-to-CO2Alarm connections.
RJ45 splitter
The RJ45 splitter (left) is used to connect two
CO2Sensors or two CO2Alarms on a common
cable.
4Layouts
In its simplest form a Quick Connect Ax60 system could incorporate a Central Display,
one CO2Sensor and one CO2Alarm. A larger Ax60 system could incorporate a Central
Display, four CO2Sensors and eight CO2Alarms. Some typical layouts are shown below.
1 x Central Display; 1 x CO2Sensor; 1 x CO2Alarm

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Quick Start Guide - Quick Connect Option
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1 x Central Display; 1 x CO2Sensor; 2 x CO2Alarms
1 x Central Display; 2 x CO2Sensors; 4 x CO2Alarms
1 x Central Display; 4 x CO2Sensors; 8 x CO2Alarms
The 2-metre cables shown in the diagrams above are pre-fitted to the enclosures. The
supplied 15-metre cables, RJ45 couplers and RJ45 splitters allow the system to be
customised to suit the building. Other system layouts are possible, providing that the
maximum number of CO2sensors (4) and CO2 alarms (8) are not exceeded.
NOTE: FOR INFORMATION ON CONNECTING THE POWER SUPPLY UNIT,
THE OPTIONAL BEACON AND THE RELAYS, REFER TO SECTION 5.

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5Connection
The Central Display‘s terminal blocks are shown below. These must be connected to the
power supply, beacon and relays (the Sensor terminal block has a cable already fitted).
WARNING: TO COMPLY WITH THE RELEVANT SAFETY STANDARDS, CIRCUITS
CONNECTED TO RELAYS 1 AND 2 MUST BE PROTECTED WITH
DOUBLE/REINFORCED INSULATION FROM THE MAINS.
5.1 Power supply unit (PSU)
Two types of PSU are available, to suit different types of installation. One is a plug-in
type, the other is a hard-wired type for connection to a fixed power supply (fused spur).
PSU, plug-in type
(supplied with plug
for specific country)
PSU, hard-wired type
(for connection to a
fixed power supply)
The plug-in PSU is supplied with a securing
strip, wall plugs and screws to reduce risk
of accidental disconnection or tampering
PSU cables are connected to the Central Display via the terminal block labelled ‘POWER’.
Surplus cable can either be shortened or stored inside the Central Display enclosure.
WARNING: THE POSITIVE AND NEGATIVE POWER CABLES ARE IDENTIFIED
DIFFERENTLY DEPENDING ON THE TYPE OF PSU SUPPLIED. READ
THE INSTRUCTIONS BELOW BEFORE INSTALLING THE PSU CABLE.

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5.1.1 PSU cable identification
Plug-in type PSU cable identification
Black with stripe: Positive (24V)
Black with print: Negative (0V)
Hard wired type PSU cable identification
Black with stripe: Negative (0V)
Black with print: Positive (24V)
CAUTION: HARD-WIRED PSU SHOULD
BE CONNECTED TO A 3A FUSED SPUR.
5.2 Optional beacon
The optional beacon cable must be connected to the terminal block labelled STROBE:
Cable connections from left to right:
BLK (0V supply to optional beacon)
RED (24V supply to optional beacon)
CAUTION: CABLE COLOURS BETWEEN
THE CENTRAL DISPLAY AND BEACON
MAY VARY. THE INSTALLER MAY USE
CAT5E CABLE IF PREFERRED, PROVI-
DING TWISTED PAIRS ARE USED. 15m
CABLE IS SUPPLIED AS STANDARD.
CAUTION: ENSURE THE TERMINAL BLOCK ON THE UNDERSIDE OF THE BEACON IS
FITTED TO THE 0V AND THE 24V PINS. THEN ENSURE THAT THE POWER
CABLES ARE CONNECTED TO THE 0V AND THE 24V SCREW TERMINALS.
Black cable: 0V supply to Central Display
Red cable: 24V supply to Central Display (left) The beacon terminal block. Ensure this
is fitted on the 0V and 24V terminals (right)
5.2.1 Locking mechanism
The beacon has a locking mechanism to discourage tampering. To lock the beacon onto
its base, locate the spigots in position then twist the beacon clockwise. To unlock the
beacon, prise open the locking clip as shown below and twist the beacon anti-clockwise.
CAUTION: IF THE BEACON IS VERY TIGHT ON ITS BASE DO NOT USE EXCESSIVE
FORCE TO REMOVE IT. UNDO THE LOCKING MECHANISM AS SHOWN.
NOTE: FOR MORE INFORMATION, READ THE LEAFLET SUPPLIED WITH THE BEACON.

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6Operation
6.1 Central Display
The Central Display is used to configure and operate the system. The three buttons on
the front panel allow access to the software functions. The three LED (light-emitting
diode) indicator lamps display the system status. Their functions are described below.
6.1.1 Indicators and buzzer
Power Green indicator lamp. Flashes once per second to indicate that the power
is on and the unit is operating.
Fault Yellow indicator lamp. Flashes once per second if there is a fault. Accomp-
anied by a fault message (FLT or COMMS FAULT) and buzzer once per second.
Alarm Red indicator lamp. Flashes rapidly when alarm is triggered. Accompanied
by an alarm message (either AL1 or CO2) and rapid operation of the buzzer.
Buzzer (the small
circular aperture
on the left of the
indicators)
Buzzer sounds briefly each time a button is pressed. Sounds continuously
for five seconds when using the TESTING ALARMS function. It sounds rapidly
on and off when an alarm is triggered, or once per second for a fault.
6.1.2 Control buttons
Cancel To use the Cancel button, press it firmly then release it quickly. The buzzer
will sound briefly. Press this button to cancel a menu option or return to
the previous screen.
Cycle To use the Cycle button, press it firmly then release it quickly. The buzzer
will sound briefly. Press this button to go to the next option on the screen.
Accept/Test To use the Accept/Test button, press it firmly then release it quickly; the
buzzer will sound. A short press is used to select an option or mute an
alarm or fault. A longer press is used to acknowledge the alarm (hold the
button until the buzzer sounds). The alarm clears when the CO2reduces.
To test the alarms, press and hold down Accept/Test until the buzzer
sounds. Alarms, indicators and sounders operate for five seconds.

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6.2 CO2Sensor
The CO2Sensor has a green Power indicator on the bottom left-hand part of the fascia.
This is used to indicate the following conditions:
Power indicator
Under normal conditions the Power indicator
flashes once per second to indicate that the
power is on and the unit is operating.
NOTE: THE CO2SENSOR RECEIVES ITS
POWER FROM THE CENTRAL DISPLAY,
VIA THE CONNECTING CAT5E CABLE.
If the Power indicator is off, this means the CO2
Sensor is either not receiving power from the
Central Display, or the CO2Sensor has a fault.
NOTE: CHECK THE CENTRAL DISPLAY;
IT MAY BE SHOWING A FAULT CODE.
If the Power indicator lamp is on continuously,
this means that there is potentially a more
serious CO2Sensor fault.
NOTE: CHECK THE CENTRAL DISPLAY;
IT MAY BE SHOWING A FAULT CODE.
If a CO2Sensor is in fault, any CO2Alarms
connected to it will also display a fault status
(their yellow Fault indicator LEDs will flash).
NOTE: FAULT CODES ARE DESCRIBED
IN DETAIL IN THE SERVICE MANUAL.
6.3 CO2Alarm
The CO2Alarm has a green Power indicator and a yellow Fault indicator on the bottom
part of the fascia. These are used to indicate the following conditions:
Power indicator
Under normal conditions the Power indicator is
continuously on (not flashing) to indicate that
the power is on and the unit is operating.
NOTE: THE CO2ALARM RECEIVES ITS
POWER FROM THE CO2SENSOR, VIA
THE CONNECTING CAT5E CABLE.
If the Power indicator lamp is off this means
that the CO2Alarm is not receiving power.
Fault indicator
Under normal conditions the yellow Fault
indicator is off.
NOTE: THE FAULT INDICATOR IS NOT
USED TO SHOW FAULTS ON THE CO2
ALARM, IT IS USED TO SHOW FAULTS
ON THE SENSOR CONNECTED TO IT.
If the Fault indicator is flashing it means the
CO2Sensor connected to the Alarm is in fault.
NOTE: FAULT CODES ARE SHOWN ON
THE CENTRAL DISPLAY. FOR FURTHER
DETAILS SEE THE SERVICE MANUAL.

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6.4 Powering up
6.4.1 Power-on-self-test (POST)
When you switch on the power supply the Ax60 performs a power-on-self-test (POST)
which takes about 30 seconds. The results of the POST are displayed on the screen:
Operator input Software response Central Display text Optional display text
Switch on power
supply to Ax60 Displays vendor name
(default is Analox Ltd)
Vendor name may vary

No further operator input is required. The power-on-self-test is an automatic process...
Performs a checksum
configuration check

Performs a software
validation check

Checks the CO2Sensor(s)
have been calibrated
This displays if no sensors
have been configured
Confirms top line of LCD
OK, no pixels are missing

Confirms bottom line of
LCD OK, no pixels missing

Confirms buzzer is off and
green LED switches on

Confirms green LED is off
and yellow switches on

Confirms yellow LED is off
and red switches on

Confirms red LED is off
and buzzer switches on

Displays current version
of the software and the
buzzer stops sounding

Displays unique serial
number of the unit

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Operator input Software response Central Display text Optional display text

Wait for CO2Sen-
sors to warm up...
This screen may display
for a few seconds to show
CO2Sensor warm-up
status. It is for
information only. It
requires no operator input

CAUTION: EACH CO2SENSOR MUST HAVE ITS JUMPER SET TO A DIFFERENT
LOCATION (E.G. SENSOR 1 = LOCATION 1; SENSOR 2 = LOCATION
2), OTHERWISE THE CENTRAL DISPLAY WILL ANNOUNCE A FAULT.
REFER TO SECTION 7.1 FOR JUMPER SETTINGS INFORMATION.

Wait for system
status screen... Displays system status
screen. Each CO2Sensor
is represented by ‘OK’ in
the top line. For example,
a system with two CO2
Sensors displays >OK OK.
The ‘>’ character identifies
which CO2Sensor is
highlighted (CO2Sensor 1
is highlighted by default)
The CO2concentration is
by default displayed in
ppm (parts per million).
The example shown here
displays 450 PPM, which
is equal to 0.045%.
NOTE: THE SYSTEM
STATUS SCREEN
DISPLAYS UP TO 4
CO2SENSORS. A
SPARE CO2SENSOR
LOCATION
DISPLAYS AS ‘---’
The bottom line displays
the concentration of CO2
measured at the Sensor

Press Cycle Displays CO2Sensor 2
details (if installed) and
the current level of CO2
In this example, CO2
Sensor 2 is not installed

Press Cycle Displays CO2Sensor 3
details (if installed) and
the current level of CO2
In this example, CO2
Sensor 3 is not installed

Press Cycle Displays CO2Sensor 4
details (if installed) and
the current level of CO2
In this example, CO2
Sensor 4 is not installed

Press Cycle Redisplays the system
status screen

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7Configuration
7.1 Hardware setting
The CO2Sensor has a hardware setting that is factory configured for a system with only
one Sensor. If a system includes two, three, or four Sensors then the hardware must be
reconfigured by moving a jumper link ( ) in each Sensor installed in the system.
WARNING: DISCONNECT AND ISOLATE THE Ax60 SYSTEM FROM THE MAINS
POWER SUPPLY BEFORE OPENING THE CO2SENSOR ENCLOSURES.
To access the jumper link, open the CO2Sensor enclosure. The printed circuit board
(PCB) has a SENSOR LOCATION selector with one link already installed in LOCATION 1.
For a system with only one CO2Sensor, the
j
umper link should be retained in LOCATION 1.
For a system with two CO2Sensors, the first
Sensor’s jumper link should be in LOCATION 1
and the second Sensor’s link in LOCATION 2.
For a system with three CO2Sensors, the
first Sensor’s link should be in LOCATION 1, the
second Sensor’s link in LOCATION 2 and the
third Sensor’s link should be in LOCATION 3.
For a system with four CO2Sensors, the first
Sensor’s jumper link should be in LOCATION 1,
the second Sensor’s link in LOCATION 2, the
third Sensor’s link in LOCATION 3 and the fourth
Sensor’s link should be in LOCATION 4.
7.2 Software setting
The Central Display software is factory configured for a system that has two Sensors. If
the system includes one, three, or four Sensors, the software must be reconfigured.
This is done by using the Top-level Menu, Configuration, Attached snsrs option. To enter
the Top-level menu, press and hold down Cancel + Cycle for at least six seconds. Then
press the Cycle button four times to display the Top-level menu, Configuration option.
NOTE: THE CENTRAL DISPLAY SOFTWARE IS FACTORY SET FOR TWO SENSORS.
Menu option Operator input Central Display text Functional description

Press Accept/Test to
go to Config. Menu
Attached snsrs 

Press Accept/Test to
go to Num of
sensors? 
The screen displays the
number of CO2Sensors
(default number is ‘>2’)

Press Cycle to choose
another number or
press Accept/Test 
The screen displays a tick
to confirm the number of
sensors is now configured
Press Cancel to return to Config. Menu, Attached snsrs