What's That Bubbling Sound?
- Thread starter JT2
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Check to make sure it is not air bound . CAREFULLY Test the T&P according to manufacturing directions and also think about using the blow down valve on the bottom to possibly remove sediment
DO it when you can get a replacement valve if the one fails
DO it when you can get a replacement valve if the one fails
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Fitter30
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Post a pic of the device and name plate
What is the system pressure set to?
Can we assume this is pumped hot water, not steam?
Is the bubbling sound related to pump flow, or do you hear it whenever the burner is firing?
Low water pressure at the boiler can result in hiss/fizz type bubbling on the heat exchanger whenever the burner is firing, which can develop into popping clanging/banging if it drops WAY low. Low pressure at the intake to a pump can result in pump cavitation noise, which is hard on the pumps.
Air in the system can create some fizzy type bubbling noises too, but it's usually heard more in the plumbing than the boiler itself.
(And Sylvan is correct that it's rightly referred to as "boiler", not "furnace". In the HVAC world the latter term refers only to hot air heating systems.)
Can we assume this is pumped hot water, not steam?
Is the bubbling sound related to pump flow, or do you hear it whenever the burner is firing?
Low water pressure at the boiler can result in hiss/fizz type bubbling on the heat exchanger whenever the burner is firing, which can develop into popping clanging/banging if it drops WAY low. Low pressure at the intake to a pump can result in pump cavitation noise, which is hard on the pumps.
Air in the system can create some fizzy type bubbling noises too, but it's usually heard more in the plumbing than the boiler itself.
(And Sylvan is correct that it's rightly referred to as "boiler", not "furnace". In the HVAC world the latter term refers only to hot air heating systems.)
