Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Indirect leaking back

Options
Vinman4967
Vinman4967 Member Posts: 1
New Biasi B10 hw boiler with 2 heat zones and 1 indirect. Pumps on supply. System has been great for six months. Last week relief started lifting as pressure creeps up to 30#s. Changed feed valve/BFP and Xtank. No change. Even with feed closed pressure creeps up. I suspect the 12 year old Bock indirect maybe back pressurizing the boiler. When i isolate the S & R valves to the indirect, pressure remains normal. Open Supply or Return and it creeps up again. Can the coil in the indirect be porous? Do I need to replace the Bock?



Thanks, Vinny

Comments

  • Robert O'Brien
    Robert O'Brien Member Posts: 3,548
    Options
    Yes

    Yes to both,the coil is pinholed and you need a new indirect
    To learn more about this professional, click here to visit their ad in Find A Contractor.
This discussion has been closed.