Hello Can someone help me with a gas fired boiler. I have an old American Standard boiler that has developed a problem with tank pessure exceeding 30 psi. which blows the 25 psi pop off valve. And then returns to 10 - 15 psi for hours at a time and then out of the blue it builds to much preesure and the safety valve goes off? Coincidence or not this problem started immediately after a "free" inspection? I have so far replaced the pop off valve and the water pressure reducing fill valve. I also notice my Aquastat was set to maximum temp of 200 degrees. Other than the pressure the boiler is working fine. Does anybody have any ideas?
- posted
17 years ago