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.

Moving the Grundfos UP 15-42fr

Docfletcher Member Posts: 487
edited September 2014 in Domestic Hot Water
I'm installing a Superstor Contender. The old set up has the circ on the return from the indirect. I'd like to move the circ to the hot supply from boiler side. The expansion tank over the boiler is also on the return side but I have no air issues so I do not plan to move it. I am well aware the circ should be moved but I'm not sure if moving it will upset a system that has been working well for 20 yrs. A could use a little guidance please. Here is photo.



  • heathead
    heathead Member Posts: 234
    I have a question is that black plastic pipe in the background to the right of the PVC the vent for the boiler?? If it is do a search and see if it was recalled.
  • Docfletcher
    Docfletcher Member Posts: 487
    Yeah, there is a voluntary recall on that. Apparently many of them cracked from heat and age. I took it out last year, took it apart , inspected and reassembled. You get rebate on your replacement cost for the SS version. I'll see about getting it replaced when the Bock is out of the way. Should be easier working in the area then.

    Bump on the circulator question folks... :)