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Hopefully this is simple to answer. I tried searching google and this forum, but I didn't get any results.
I have a Repco boiler with a Honeywell Aquastat.
It is a rental and I want to install a Nest E thermostat so I don't have to drive down each time I get a heating complaint.
According to the Honeywell manual, the Tv and T terminals go to the thermostat. It doesn't say necessarily which goes to R and W. Does it matter to Nest E which goes to which?
If I want to add a common wire, do I tap into the W or Z terminals on the Aquastat? I found one webpage alluding to that, but the information on that page didn't seem credible. If someone could confirm, or answer this question, that'll be great.