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My Brother's House

The living room and dining room are open enough to each other that I want to put them both on the same zone.

1928 house, at some point over the years they put BB in the LR & left the CI rad in the DR.

I'm thinking of piping it this way, zone t'stat would be in the LR with the BB, Danfoss TRV for the CI rad (will probably use remote t'stat).

I'll pipe the zone in 3/4" copper. Okay to pipe this way, do you think? Haven't crunched any numbers, but I'm thinking I have to make the bypass one pipe size smaller, or else the flow will go through a 'line-size' bypass, even when the TRV is open...


  • perfect

    nothing else on that zone?

  • Mark Walnicki_2
    Mark Walnicki_2 Member Posts: 32
    Thanks Noel

    nope, that'll be it on that zone.

    Interesting, fun project for me. I think they've got all the radiation and boiler they need to heat the house comfortably and economically, but right now it is (4) zones set up so poorly they are both uncomfortable and paying high heating bills.

    He's 5 hours away, and I've only seen the system once, enough to get a good impression, but I'm making him do all the legwork of room measurements, radiation measurements, etc., so I can get a good parts list together, and decide how I'm going to set it all up.

    First floor is primarily baseboard (except for that lone CI rad. I just posted about), 2nd floor is all CI. I'm thinking I'll do the 2nd floor with injection pumping for boiler protection (gas fired), maybe on OD reset, but I don't want to get too crazy with all of it. Once I get the heatloss & sq ft radiation numbers back, I'll decide from there.

    But maybe I'll just make it it's own zone. What's a little boiler condesation/thermal shock between brothers? He's a musician, he'll never know the difference anyway... :-)

  • injection

    I "repiped" a house once that began with a radiator zone, and a tankless coil boiler, and had two zones of baseboard stabbed onto it. It didn't work well, especially with the triple aquastat starting and stopping the pumps all of the time.

    I put in an indirect, and made the radiators be an injection zone, by tekmar.

    The tekmar control partially reset the boiler water (and the baseboard zones, as a result) unless the indirect was calling, and the radiators all heated together evenly.

    The tekmar control also provided boiler return protection by slowing the injection pump till the boiler return temperature came back up.

    They make a nice product.

    Good luck with your project, Mark!

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