Macurco CD-12 Instructions D'utilisation page 9


Carbon Dioxide concentration has dropped below fan setting

Fan Relay Run time has been exceeded
Note that the "disable" fan setting will cause the fan relay to not engage. The fan relay will engage in trouble fault condition (if
the Trouble Fan Setting Option is set to "ON") and will disengage once trouble fault condition is cleared.
7. The Current Loop is 4 mA in clean air and 4-20 mA for 0-2000 ppm CO2
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