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flat plate/domestic tank

HEATON Member Posts: 117
help with piping a flat plate for domestic tank


  • SWEI
    SWEI Member Posts: 7,356
    more info

    Is the domestic tank providing heat for a radiant system, or is the radiant system providing heat for a domestic tank?  What kind of radiant -- floor, baseboard, radiators, something else?  Is this an add-on to an existing system, or are you in the lucky position of not having purchased the equipment yet (there are better ways to do this in most cases.) 
    HEATON Member Posts: 117

    OD wood boiler, several circuits, some are duct coils on forced air furnaces 2 are plates on storage tanks, (50 gal electrics) the first one that I'm asked to correct from an incorrect piping which never worked for 6 yrs is a circ. from the OD boiler activated by aqua stat on temp rise. Supply tube runs to a tee w/ one going to duct coil on furnace and the other into a flat plate on the boiler side. returns are accordingly "tee'd" one from duct coil one from plate. On the domestic side the hot is simply piped to pass through the plate & on to the points of use. The tank with the plate is piped in tandem w/ a gas fired 50 , not in series but parallel.
  • SWEI
    SWEI Member Posts: 7,356
    complex piping

    So the OWB is providing heat for DHW.  I assume the OWB is an open system?

    A drawing or some photos would really help.
  • NT3041
    NT3041 Member Posts: 11
    Heat Exch. Connections



    Refer to page11. You would only have one tank (first) and your tank connections would be from your flat plate rather than the heatpump exchanger.

    Hope that helps.

  • SWEI
    SWEI Member Posts: 7,356
    Outdoor Wood Boilers

    http://www.caleffi.us/en_US/caleffi/Details/Magazines/pdf/idronics_10_us.pdf is a phenomenal source for information about the subject.
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