New Superstor causing Boiler to Dump

Rookie

It's a leaker, isolate the Superstor and do an air test, get a replacement and be happy.By the way Lance how do you know your tank is a female?

lwal

Superstor Causing Boiler to Dump?

I recently installed a Superstor as a third zone on an oil burner. Prior to the install the oil burner worked without a hitch. Now she hits 30 to 40 lbs and of course dumps the water. I have changed the Extrol, Dual Feed valve, PRV and have even adjusted the autofeed all the way up. She still dumping on me. The only thing I'm not sure of is this: Could the fact that the boiler has a double aquastat and the superstore has a single aquastat have anything to do with the proble? Should I have disconected the aquastat on the boiler for the 5 gal coil (Which is now not even in use)and just used the aquastat on the boiler for the Limit and the one on the superstor for the storage tank and, instaed of using a Zone valve for the stor I used a Taco. Could either of these two reasons be my cause? Any help would be greatly appreciated. I tried to find the website to Superstore to no avail. Thanks Again.

Unknown

The symptoms sound like

the Superstor coil has a leak and street pressure is being introduced into the boiler . It's a frequent occurance around here - with different brands though . Is there isolation valves on the hot and cold of the indirect and on the supply and return of the heating coil ? If you shut the valves on the heating side of the Superstor and the boiler stays at normal pressure , it's the indirect coil leaking .

[Deleted User]

Sounds to me like...

you have a pump that is pumping towards the expansion tank, AND the PRV is "seeing" the negative pressure the pump is generating and causing the system to become over pressurized.

Got a drawing or picture?

You've already replaced everything but the boiler...;-)

ME

Young One

I agree also

This to me, also sounds like a leaker. The higher city water pressure is finding its way into into the boiler water. If this tank has a coil for the boiler water the compromise is there somewhere. Isolate the domestic side of the tank, drain the domestic, remove the inspection cover take a peak inside. Have the boiler open to the tank, and you should be able to see something.

Leo

If the new part of the system is wired wrong it could be by passing the safety, overheating and dumping the relief.

Leo