Upgrading from ABS-OR-3 question

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trbovmj
Posts: 1
Joined: Tue Dec 17, 2019 7:25 pm

Upgrading from ABS-OR-3 question

Post by trbovmj »

I'm planning to upgrade both my zone dampers and control board for a 2 zone gas furnace & AC system.
I believe the appropriate board is a NCM-300. The wiring looks straightforward, once I eliminate my selector switch wires from the old system.
I currently use a thermostat that has a built in humidistat to turn on my humidifier and blower via a couple of relays (one for the blower and one for the humidifier). This allows the humidifier and fan to run when needed, independent of the furnace since we heat with a wood stove much of the time.
Will that still work with the NCM-300?

Thanks in advance for any help on this!

Steven W.
Posts: 25
Joined: Tue Jun 25, 2019 9:13 am

Re: Upgrading from ABS-OR-3 question

Post by Steven W. »

Yes it will work for you. We recommend running your humidifier to the system side of our board (R terminal and the W terminal).
Steven R. Weisneck
Technical Engineer
Tel: (732) 446-3110 Ext. #461
www.ewccontrols.com
sweisneck@ewccontrols.com

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