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Fireplace heated boiler??

PBCullen_2 Member Posts: 2
Will this set-up be an issue?


  • Rich Kontny_3
    Rich Kontny_3 Member Posts: 562
    No Flow

    Could be an issue as water trapped in this radiator could flash to steam under certain conditions. High pressure could result creating a dangerous situation.

    I would run this one by a proffesional!
  • Howard Emerson
    Howard Emerson Member Posts: 111
    Radiator in fireplace..........

    Isn't that just to preheat the wood prior to lighting?


  • I Tried A Similar Arrangement

    But you have to be careful. If you take too much heat away, you get creosote buildup in you flue, and if water flow stops you could get a dangerous steam condition. Do what I did, install a wood stove into the hearth and vent it up into a lined flue, you will get a lot more heat out of it that way, and it will be a lot safer.

    Thanks, Bob Gagnon
    To learn more about this professional, click here to visit their ad in Find A Contractor.
  • Seen One

    I had a customer who had a similar set up. I ended up disconnecting it. To many issues. This system had some low temp stuff. I gave them a price on a dump loop/zone, they decided to forget it.
  • Bob Harper
    Bob Harper Member Posts: 1,026
    illegal, dangerous and just plain wrong

    The code does not allow such modifications. It is not recognized by ASME. As Bob said, it can lead to creosote formattion as well as weakened draft and smoke spillage. That coal basket grate is too far forwards and could slill smoke.
    If this is a factory built fireplace, then you voided the warranty and listing.
    That's for starters.
  • A tragedy occurred...

    with a similar system some years ago here in NJ, right after the first energy crisis. A handyman homeowner had installed a coil in his fireplace, with a pump and an insulated tank as a "free" hot water heater. He used it for a while, then sold the house. The new homeowners weren't informed of this highly dangerous modification, and when the first cold fall night came around, the homeowner lit a fire, not knowing that the coil was full of water, and the pump was manually controlled, and the system had no safety equipment. The coil overheated and exploded, killing 2 children and scalding several family members badly. Don't do it.
  • hot_rod
    hot_rod Member Posts: 21,813
    aka.. hydronic parlor bomb

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Paul Fredricks_9
    Paul Fredricks_9 Member Posts: 315

    I went to a restaurant last year that had a coil as the base for the logs. A circulator pumped the water through baseboard around the room. Didn't see the guts of it, hope it had a PRV.
This discussion has been closed.