The Honeywell box is difficult to reach and there are screws to take the
cover off, or open it. If you need to see inside that box I will figure
out how to get to it. Thanks!
The two photos I posted with my original query are the best I can do for
model of thermostat. I is original to the home from 1960's. The heating
system is a gas-fired, hot water boiler system by American Standard also
from the 60's. There are 4 heati...
Thank you for your response. I've used the compatibility checker and it
directs me to take a photo but never gets to a point where I can upload
for assistance. That's why I tried the community board. Also, I did
notice that the wires do not match the...