thermostat compatibility for 2 zone hot water heating w/o zone valves
If your old t-stat has just 2 wires running to it, the swap will be
easy.
Just a note, since your boiler system is a 2 zone system with 2
t-stats, you probably won't see very much energy savings by using just
one programmable stat. If you are just doing it for your own comfort
though, it should work fine.
-Brian
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