Macurco CM-xx Operation Manual
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 0-200ppm CO.
NOTE: 22 to 12 AWG wire shall be used. Wire used shall meet the temperature range of the detector i.e. 0°F to 125° F (-18°C to
52°C).
REV – 1.2
Figure 3-9 12-Series 4-20 mA Output Diagram
Figure 3-10 12-Series Rear View
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