Question about Water Heaters
You don't say what model your boiler is but if its one of the older types in my experience its caused by the built in bye-pass and would require changing it to overcome the noise you describe which is what most customers describe. You can prove it by turning the central heating valve of on the flow side of the boiler momentarily you will hear the noise stop then quickly turn it back on, it often helps to you replace with new one.
Posted on May 09, 2015
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Posted on Jan 02, 2017
SOURCE: boiler overheating
the problem there a relay stuck or thermostat bring on the pump & you can lower your high limit aquastat!! also the flow valves can bypass hot hot water risers time to put in a seperate water heater domestic coil are not energy efficient !!!! aquastat high limit set @ 180f deg low limit set @ 140f deg!!!
good luck!!! tim
Posted on Oct 18, 2008
not an engineer but maybe a heating compant,, it sounds like you have a relay that has gone bad, you have what we call a winter summer system your domestic water comes from a tank inside the boiler, you might want to think about splitting the system to save you some money in the long run, seperate the water heater from the boiler so you only heat up in the winter, right now you are heating the system that heats your house to get 30 or 40 gals of domestic hot water, it would cost you less by seperating them
Posted on May 30, 2009
thermostat on the gas valve needs to be replaced,, which you will probly have to change the hole gas vale ,, check on the parts and labor and if it is over 6 years old wheigh the diffrence between it and a new unit good luck
Posted on Jun 10, 2009
Lack of pressure in the primary circuit [radiators] Look for a pressure gauge should read between 0.5 & 1.5 bar
Somewhere there is a tap/valve/pipe connection to refill & looks like a small thumb turn or a screwdriver turn on a connection on the mains water inlet pipe. turn on until you get the right pressure then off
Posted on Dec 22, 2009
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