EWC Controls Forum

The NCM 300 is not a duel fuel zone board. You need to go with a BMPlus-3z. There is a workaround if you have heatpump stats and you set them to Duel Fuel (now you are letting the stat's control your staging between heatpump and backup heat).

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We don't post that. That info is for engineering only

The latest code for the UT-3000 is V1.87. You can find the latest documents on our sit.
www.ewccontrols.com

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That is correct if you use the G wire as the common wire then you will lose the ability to run your fan manually. Yes 40VA transformer is more then what you will need.

You can use the "G" green wire as your "C" Common wire. Your fan will still run when it is needed.

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