Hi, I have been searching for answers and stumbled on this forum.
I have a question regarding a Burnham series 2a hydronic boiler that is 25 years old. The boiler pressure goes from 12 psi cold to 25 hot and sometimes during the cycle it climbs just over 30psi causing a small amount of water to be released. The expansion tank is new and preset at 12 psi. The 30 psi relief valve is new and the pressure reducing valve is set at 12-15 also new.
I do have a boiler mate / water heater and there is no leak in the heating coils inside. The two system pumps,taco 007 and 0011 are working.Can the boiler heat exchanger be the problem? Will a clogged water tube or tubes in the boiler cause this pressure increase?Can a build up of soot in the flue passageways in the boiler cause the problem? Can it be a sign that a heating zone in the floor is getting clogged. I flushed the boiler and the water was clear.
I have a question regarding a Burnham series 2a hydronic boiler that is 25 years old. The boiler pressure goes from 12 psi cold to 25 hot and sometimes during the cycle it climbs just over 30psi causing a small amount of water to be released. The expansion tank is new and preset at 12 psi. The 30 psi relief valve is new and the pressure reducing valve is set at 12-15 also new.
I do have a boiler mate / water heater and there is no leak in the heating coils inside. The two system pumps,taco 007 and 0011 are working.Can the boiler heat exchanger be the problem? Will a clogged water tube or tubes in the boiler cause this pressure increase?Can a build up of soot in the flue passageways in the boiler cause the problem? Can it be a sign that a heating zone in the floor is getting clogged. I flushed the boiler and the water was clear.
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