Search found 3 matches

by Scottcgardner
Fri Dec 29, 2017 4:02 pm
Forum: Help and Advice
Topic: Regarding the NCM 300
Replies: 1
Views: 3397

Regarding the NCM 300

My second zone is a three wire. I see on the NCM 300 it calls for a five wire. Can I use the three wire?
by Scottcgardner
Fri Dec 29, 2017 8:58 am
Forum: Help and Advice
Topic: Advice on switching to compatible board for Nest
Replies: 2
Views: 4236

Re: Advice on switching to compatible board for Nest

Great. I noticed on the NCM 300 that for zone two it takes a five wire. I only have a three wire. Is that going to be a problem?
by Scottcgardner
Thu Dec 28, 2017 6:18 pm
Forum: Help and Advice
Topic: Advice on switching to compatible board for Nest
Replies: 2
Views: 4236

Advice on switching to compatible board for Nest

I have been trying to upgrade to a smart thermostat for sometime now but keep running into the problem with having both a B and O wire. After reading some posts here it appears my solution would be to replace my board? I currently have a EWC-ST-2E. I have two zones, gas with AC. Can you recommend a ...