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Viessmann Boiler zones
Mrb1977
Member Posts: 1
Hi there, I have a Viessmann boiler that isn’t working up to par. I have three zones on the unit and one zone doesn’t heat like it should. The other two zones will call for heat. I just replaced my mercury thermostats with a Honeywell programmable. Is the new thermostat not compatible with the system? Thanks everyone.
0
Comments
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Was it working before you changed the thermostat?0
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The boiler is probably not controlling the individual zones.
Do you have zone valves or circulators?
Do you see a separate zone controller?
Pictures help."If you can't explain it simply, you don't understand it well enough"
Albert Einstein0
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