Posted by joe izzo on December 27, 1997 at 17:01:03:
In Reply to: New boiler system over-pressure posted by Dale Van Aken on December 27, 1997 at 12:04:28:
: I have a new 150,000 btu boiler with a 60 gal indirect fired hot water heater. Both heat and HW have their own circs. The system seems to regulate between
: 15-20 pounds for a few days, then blows the pressure relief valve (set at 30#). The water inlet control has been replaced and the expansion tank has been
: replaced and upgraded to a Amtrol Model 60. All looked good for a few days, then 2 quarts of hot water on the floor. The installer is stumped. Me too. Any
: of you boiler pro's seen this before? Thanks.
Was this system ever a gravity system? If so was all your large steel piping left intact? If it was, your extol may still be to small. Did you isolate the heating system from the domestic supply for a day or two?