Control board works in conjunction with CCCII thermostats. Â This board mounts in the rooftop air conditioner
and can be easily connected to the next board via a phone-like cable in the next rooftop unit for multi-zone installations.  If your control board is mounted in a metal box below the ceiling underneath the A/C, this is not the control board you need.  Instead order part number 3312020.000.
Note: Â Actual phone cables will not work as wires need to be reversed on one end of the cable. Â Cables available separately.Â
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