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.

Run time

SHARK7760
SHARK7760 Member Posts: 1
in Domestic Hot Water

With temps outside at 70 and no call for heat, should my Lochinvar furnace be running at all if there is no call for hot water?

Comments

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 9,378

    Depends, what Lochinvar are we talking about, and how does it make hot water?

    Model number, pictures, any other info???

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • GGross
    GGross Member Posts: 1,287

    Some combi models have a comfort function that keeps the heat exchanger warm. Could be a unit on outdoor reset with a faulty outdoor sensor going into freeze protection mode. Could be an indirect tank dropped temp just enough to get the unit to fire. If you have an indirect the boiler will fire whenever the aquastat or sensor tells the boiler to fire, not only when there is a hot water demand. Need more info and pics help

    Alan (California Radiant) Forbes
  • HVACNUT
    HVACNUT Member Posts: 6,331

    More info needed. Some have an internal recirculation setting.

  • hot_rod
    hot_rod Member Posts: 23,382

    Comfort mode speeds up HW delivery, but costs you more gas. It can be toggled on or off in the DHW menu

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

Categories