im having Nest 2020 thermostat and Navien combi-boiler constant call for
heat issue. Was wondering if I put a 250 ohm pot on the W wire back to
the navien unit with this resolve the issue of the nest thermostat
constantly calling for heat.
Mark, The Nest power adapter is used to borrow power from the R wire to
power the C terminal. The combination of the Nest thermostats low
resistance at the W terminal and the high sensitivity of my Navien units
W input is the real problem. The only w...
Mark, thanks for your helpful reply. I do have the nest power adapter
and tried to run it off of my R and W wires coming from my Navien unit
to the C lug on the nest base with the same result of constant call for
heat. Wiring of the power adapter see...
TanM.I also have a two wire system at my boiler but pulled brand new
18/3 with no junctions from the thermostat to the Navien unit so I could
add a C wire off of a 110 to 24 volt transformer to get the required
power to the Nest thermostat C lug. Fro...
