Oil fired hot water heater Overheating

Old 07-30-14, 09:40 AM
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Oil fired hot water heater Overheating

Needing help our Bock oil fired hot water heater is over heating causing the relief valve to activate and it still won't shut down. We replaced the thermastat it stopped for 3 days and did it again. Called the company and they couldn't help. We are tired of putting fuel in the tank just to burn out cause of the water heater. Any help would be appreciated Thank you.
Old 08-16-14, 07:06 PM
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What is the pressure in your system?the relief valve also works on hi pressure, pressure should be under 30 psi I believe.
Old 08-16-14, 09:52 PM
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Another late to the party.Check your primary control by undoing a yellow lead from cad cell.Might need new 150psi temp/pressure valve if old one leaks a lot this will call for burner on.Might need a pressure reducing valve for domestic and or hot water heater extrol. Problem is utilities will jack up pressures instead of putting in larger pipe when areas get built up.It's cheaper. 160 psi plus here.

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