Caron 7000-75 - Manual (Page 14)

7000-50 & 7000-75 Series Operations Manual Rev A 1/6/2014 Page 14 of 71
SECTION 4 – OPTIONAL ACCESSORY INSTALLATION
Connecting Alarm Contacts (ALRM302)
With the purchase of ALRM302, a set of terminals on the rear of the unit is provided to
monitor temperature and humidity (model 7001) alarms.
With the alarm contacts, the terminals provided allow for a NO (normally open) output,
a NC (normally closed) and COM (common) connection. In the event of an alarm
condition or power failure, the NO contact will close, and the NC contact will open.
Once the alarm is cleared, the contacts return to their normal conditions. Insert the
appropriate wire into the terminal and tighten down the screw terminal on top of the
connector.
Terminal Connection Unit off Normal Alarm
N/O to C Closed Open Closed
N/C to C Open Close Open