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Hot Water Heating System Issues
I have a hot water heating system with a gas-fired boiler in my house. I'm having some problems with it.
The water temperature varies from 70 to 170 degrees, and the pressure varies from 15-23 PSI, and it spits out a lot of overflow water. When the pressure drops below 20 PSI, I get no heat on the top floor of the house (4 story townhouse).
Is this normal? Didn't have this water overflow or pressure problems last year (first year in the house).
Is the boiler supposed to keep the temperature and pressure constant or in a narrower range? Could it be that I'm setting my thermostat at too wide a range (74 degrees when occupied, 68 degrees when not)?
Appreciate any thoughts.