12
Operation
1.
With the display function turned “On”, the CD-6 will show the current concentration of CO2 ppm in the air. Normal outdoor
concentration ranges between 350-450 ppm. When the CO2 concentration reaches the Fan Relay setting (1000ppm, for
example) the display will flash back and forth between “FAn” and “1000”. With the display function turned ”Off”, the display
does not show the CO2 concentration, but will show “FAn” as long as the fan relay is activated.
2.
With the display function turned “On” and the CO2 concentration reaching the Alarm Relay setting, (2000 ppm, for example) the
display will flash back and forth between “ALr” and “2000”. The buzzer will sound indicating “Alarm” if the buzzer is turned “On”.
With the display function turned off the display does not show the CO2 concentration, but will show “ALr” when the Alarm relay
is activated.
3.
With the 4-20 mA function turned “On” and the CO2 concentration climbing, the 4-20 mA signal will ramp up corresponding to
the concentration (0-2000 ppm, for example). The display will show “FAn” and “ALr” and sound as outlined above.
Default Configuration – Factory Settings
The default
Power Up Test
setting is
On
The default
Display
setting is
On
The default
Buzzer
setting is
On
The default
Alarm Relay
Setting
is activation at 2000
ppm
The default
Alarm Relay
Configuration
setting is
Normally Open
The default
Fan Relay
Setting
is activation at 1000
ppm
The default
Fan Relay Delay
setting is
3 minutes
The default
Fan
Relay
Minimum
Runtime
setting is
0 minutes
The default
Fan Relay
Latching
condition is
OFF
The default
Trouble Fan Setting
condition is
OFF
The default
4-20mA
Output
setting is
On
