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.

IFC Circulator and Water Quality

Options
paul_81
paul_81 Member Posts: 27
in THE MAIN WALL
I have run into IFC in Circulators getting stuck open and experiencing ghost flow. The worst one is on a single zone mod/con where the DHW will run for hours because so much flow is heading out backwards through the heating zone. I have pulled the check valve and cleaned it, but it failed again almost immediately. The system piping is older cast iron piping and radiators. Would a 1.25"spring check be more reliable?

Comments

  • icesailor
    icesailor Member Posts: 7,265
    Options
    And that my friend is why I consider them one of the worst ideas ever put on to the piping public.

    You should try to winterize a house with a hydronic system full of them. You don't even know they are there, and it is a P. Poor way around a regular flow check.

    Do they rate circulator flow with and without them? They have to add some restriction to the flow. Maybe that's a reason why you need hydraulic mining pumps to get water to flow around a system now. Unwanted restriction from Internal Flow Checks.

Categories