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Taco Bumble Bee Modes

Cheeze-Tech
Cheeze-Tech Member Posts: 82
Ran into a Taco BumbleBee HEC-2 on a residential system and was wondering the best mode to use. It is a cast iron boiler with 2 zones of beseboard. Piped direct from boiler to house (no primary/secondary piping). Right now it’s just set for constant speed which seems like a waste of a high tech pump if it can do more to improve the system. I’m doing a pm so I always like to make recommendations that improve things if I can.

Comments

  • SteveSan
    SteveSan Member Posts: 117
    I would say the DT mode is a good fit for your system. You can always call into Taco Tech Support @ 401-942-8000 we are here Mon-Fri 8am-5pm EST This is the IOM if you need to make a copy.

    http://apps.taco-hvac.com/uploads/FileLibrary/102-435.pdf
    Erin Holohan HaskellSTEVEusaPACheeze-Tech
  • Cheeze-Tech
    Cheeze-Tech Member Posts: 82
    Thanks greatly for your help.
  • hot_rod
    hot_rod Member Posts: 16,272
    Is the boiler running ODR?
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • Cheeze-Tech
    Cheeze-Tech Member Posts: 82
    No it is not. 2016 Weil McLain with the self delaying control.
  • Dave H_2
    Dave H_2 Member Posts: 503
    @Cheeze-Tech
    I would ask the homeowner if setting were changed shortly after the system went in 4 years ago.
    The BumbleBee was shipped in the Delta T mode or 20 degrees as default.

    Dave H.
    Dave H
    Erin Holohan HaskellRich_49
  • Cheeze-Tech
    Cheeze-Tech Member Posts: 82
    No changes since installed. Pump just wired into boiler control and set at speed 1. Guy retired after system installed.
  • Dave H_2
    Dave H_2 Member Posts: 503
    So you can easily drop it into Delta T mode as long as the sensors are there and strapped to the boiler supply and boiler return.

    Enjoy
    Dave H.
    Dave H