EWC Controls Forum

Hi:

I just upgraded to the NCM300 from the EW-ST-2d. The NCM300 comes with the supply air sensor. My question is, do I need to install this or can I run without it? What are the advantages/disadvantages?

Thanks,

Thanks, Paul. I will give you a call after the new year. In the mean time, I did some additional checking. The voltage output from the board is correct - M6 for close/M4 for open on both motors. The Zone 1 motor doesn't move from open to closed on its own--it needs a little nudge so when zone 2 ...

I just replaced an EWC ST-2d with an NCM-300. I was careful to make sure I moved all wires from the old board to the corresponding terminals on the new board. I've got two zones each with one damper. The dampers were wired to the old board to the 6-4-1 terminals and that's how I wired them to the ...