Smart Tstat on NCM-300 board

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Joined: Tue Nov 23, 2021 4:19 pm

Smart Tstat on NCM-300 board

Post by AKAHome »

Maybe this question has been asked before, but I couldn't find it when I did a search.

I want to replace my current thermostat with a Honeywell Home Wi-Fi Smart Color Thermostat. It talks about a 'C' wire. I don't see a 'C' wire connected to either the Zone 1 or Zone 2 T'Stat connectors. I do see that there is an extra wires (blue & brown) that are wrapped around the wire going to each zone thermostat. My question, if I use the extra wire to connect to the 'C' connector, will I have a problem? Is there power to the 'C' connector on the board? See attached photo. Do I need to get a professional to do the thermostat replacement?

Help appreciated.
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Steven W.
Posts: 57
Joined: Tue Jun 25, 2019 9:13 am

Re: Smart Tstat on NCM-300 board

Post by Steven W. »

Yes you can use one of the spare wires for the "C" wire
Steven R. Weisneck
Technical Engineer
Tel: (732) 446-3110 Ext. #461
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