Dokument
IMA 205
Rev 1 Page
1 (4)
Press here to open.
Figure 2 Closed housing seen from
above. Pressing a screwdriver on the
locking hook opens the housing. The
locking hook is then released
Installation manual
CF3-W-EU-Disp-FLI
CO2 transmitter with acoustic alarm
Figure 1 CF3-W-EU-Disp-FLI
General
The IAQ (indoor air quality) sensor product CF3-W-EU-Disp-FLI (sensor for wall
mounting) is desig ne d t o meas ur e carb on di o xide (CO2) in rooms. The acoustic alarm
sounds when the carbon dioxide concentration is above 1400 ppm CO2. A push
button silences the ala rm for 30 minutes. Green, yellow and red LEDs give a rough
estimate of the CO2 concentration Option -Disp displays the measured CO2 value in
ppm (parts-per-million) on the LCD.
The units are designed for connecting to Direct Digital Control (DDC) with 0-10V
signal inputs. The signal output OUT1 (0-10V) gives linear signal voltage
corresponding to the measuring range.
To open the wall mounted
housing
Dokument
IMA 205
Rev 1 Page
2 (4)
Terminal
Function
Electrical
Remarks
settings
Remarks
sensor
+~
Power (+)
24 VAC/DC+
reference
Out(1)
Analogue output 1
0-10 VDC
0-2000 ppm CO2
Green LED
Lit when the CO2
The buzzer sounds
Push
Silences the buzzer
above 1400 ppm
Electrical connections
The power supply has to be connected to +~ and . is considered as system
ground. The same ground reference has to be used for the CF3-W-EU-Disp-FLI unit
and for the DDC/signal receiver.
PLEASE NOTE!
The same ground refere nce has to be use d for the CF3-W-
EU-Disp-FLI
unit and for the control system!
Out(2)
Yellow
LED
Red LED
Power ground (-)
(+)
data
(+-20%), 2W
24 VAC/DC-
Standard
System voltage
Settings of this
Buzzer connected
concentration is below
800 ppm
Lit when the CO
2
concentration is 800
to 1400 ppm
Lit when the CO
2
concentration is
above 1400 ppm
button
30 minutes when
pushed. After 30
minutes the buzzer
sounds if the CO
concentration is
Table I. Connections of the main terminal and other functions of CF3-W-EU-Disp-FLI
2
Dokument
IMA 205
Rev 1 Page
3 (4)
Buzzer
Push button
Figure 3 PCB with buzzer connected to OUT2. The push button can be used to silence the buzzer for
30 minutes
Self-diagnostics
The system contains a complete self-diagnostic procedure that is executed
automatically when the sensor is in operation. The yellow LED is lit if an error is
found. Sensors with display show a wrench if an error is found. The wrench is shown
and the yellow LED is lit during the first seconds after power up and if the measuring
range exceeded. They are automatically turned off when the sensor returns to normal
operation.
Maintenance
The CF3-W-EU-Disp-FLI is basically maintenance free in normal environments
thanks to the built-in self-correcting ABC algorithm.
PLEASE NOTE!
The sensor accuracy is defined at continuous operation (at least 3 weeks after
installation)
PLEASE NOTE! Electronic products should be disposed of via a suitable
recycling centre.
Dokument
IMA 205
Rev 1 Page
4 (4)
80(3,15)
28(1,10)
30(1,18)
60(2,36)
4(0,16)
4(0,16)
30(1,18)
100(3,94)
Dimensions
Figure 4 The dimensions of the sensor in mm and (inches)
Mounting of the sensor onto the wall
Please use screws with screw head diameter less than 7,5 mm (0,295 inches) and
screw head height less than 2,4 mm (0,094 inches).
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