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Pj

wrote:
The thermostat settings currently are LO = 130F and HI = 160F. But the
furnace comes on when the water temperature guage reads 160F, and shuts
off when the temperature gauge reads 185F. The temperature gauge
continues to climb to about 190F after the furnace shuts off, due (I
think) to the lag time for the water temp to stabilize.

Does this sound normal? Why doesn't the temperature gauge track with
the thermostat settings? Should I lower the settings?

This is a Burnham V83 boiler in an oil / hot water heating system with
a coil inside the boiler for hot water.

Thanks,
Art Harris

I'm going to take a guess at this one since without additional
information it's too difficult to diagnose the problem: The thermostat
that controls normal on-off functions isn't working and the furnace
stays on until the temperature reaches the "fail safe" setting for
shutdown. In other words, the safety device that prevents the boiler
from popping the pressure relief valve or blowing it's seams is
activating; not a good choice for shuting down the system.

Call the service company that installed the furnace.

Pj