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Welcome to Just Answer, my name is Luke
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Pressure relief valve are set to open at 30lbs pressure, obviously your system is exceeding that, over pressure is usually cause by a defective water pressure regulator,it is adjusted to stop feeding system new water up to 15lbs, that will probably need to be replaced.
what is your gauge reading? here is a link to show you what to look for.
What does it say in pounds
3 bars=43 lbs, way to high, shut off valve that feed new water to system, and replace what I said.
Did you click on the link I sent you with a picture of what it looks like?
the feed water valve you need to shut off is usually rite next to the pressure valve
" said may b a pin hole in Coil"
does not make sense,
thats the part you need to replace..
Looks like my colleague had to leave. Do you still need help?
Ok, let's start with the easy stuff. Turn the water feed into the boiler off and drain some water out of the system until the pressure on the gauge drops to 15 psi. Also turn the power off to the system. Give it at least 15 minutes if not an hour or more then go back and check the pressure. If the pressure is higher than 15 you have a leak in the SuprStor coil.
Forget what the other tech said for now. There's no way I can know what your water feed shut off looks like. Every system is different. It part of the onsite piping. If you don't know then I need a pic of the boiler and surrounding piping. You can post a pic here by clicking on ADD FILES next to the SEND button
No. Did you click on add files then navigate to where the picture file is saved?
Please contact customer service. They can walk you through it. Then once you post the pic we can continue from there. Here's a link to customer servicehttp://ww2.justanswer.com/help
Like I said before there's no way I can know that. Every job is piped differently and uses different brand shut offs. Each manufacturer has their own color.
I have no idea what that means. If you can't identify the water line into the boiler (it's usually 1/2") then I need a picture
Great I can see the pic but I need a wider shot so I can see the piping around the boiler too. I can't tell anything just from this pic.
I don't understand your last post
Assuming the relief valve is functioning properly (only discharging when the system pressure is above 30 psi) the following are the possible causes
1) Thermal expansion: if the pressure only rises to above 30 when the burner is running then either the expansion tank has failed or it is too small
2) A failed feed valve which is letting water into the system beyond its 15 psi max set point. This would happen even when the burner is not firing.
3) A DHW (dometic hot water coil) has a hole in it. In your case the coil in the SuprStor. If the water feed to the boiler is shut off and the burner is not firing AND then the pressure rises you have a leak in the SuprStor coil.