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Weil McLain Ultra Boilers

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Comments

  • Constantin
    Constantin Member Posts: 3,796
    I'd consider a 150kBTU/hr boiler... max.

    However, the only way to know for sure whether the proposed boiler works or not depends on you knowing what you want to add. The additional load may double your load, it may only increase it by 20%, it may decrease it... it all depends on the construction techniques, window schedule, etc.

    Since the modulation range of the Ultra 230 is 5:1, the minimum output from this unit is 46kBTU/hr. Your home will only start to need this much heat sometime deep into winter. This is a recipe for short cycling.. and you won't benefit much from the modulating burner in this boiler.

    On the other hand, if you can change the overall input rating of the appliance and still take advantage of the 5:1 modulation range, great! But can it be done? That is, can you turn a 230-46kBTU/hr Ultra into a 70-12kBTU/hr Ultra? That would be a pretty nifty feature, but I doubt it can be done.

    In the meantime, I'd think about what you intend to do in the addition, do a heat loss, and not increase the boiler beyond that. The baseboard loop in the basement has no effect on the overall heat loss, so it shouldn't influence the boiler sizing, for example.
  • Reynz_2
    Reynz_2 Member Posts: 98
    I think it can be done

    Here are a couple of references to reducing the firing rate to reduce input.

    Where the heck is Floyd and Kal when you need them.....

    Maximum fan speed
    1. Parameters 13 and 15 can be set to limit the maximum
    boiler firing rate. Boiler firing rate is proportional to the fan speed, so reducing the maximum fan speed reduces maximum input.
    2. Reducing maximum fan speed will be helpful for systems on which the boiler is oversized for either space heating or DHW, or both.
    If the boiler is oversized for space heating, you can reduce the maximum fan speed during space heating operation, parameter 13, to limit the maximum boiler input.
  • Rocky_2
    Rocky_2 Member Posts: 89
    Most sensor wire can be ran up to 500 feet, 18 ga.

    At least thats what tekmar lit says.
    Rocky
  • Robert O'Connor_3
    Robert O'Connor_3 Member Posts: 272
    disable boost on Ultra

    Floyd,
    You mentioned disabling the boost feature on the Ultra...I looked in the manual but didn't see instructions for that. Would you let me know the steps?

    Dave
  • james patrick
    james patrick Member Posts: 70
    WM Ultra

    I think he needs to decrease the MINIMUM firing rate.
    I don't think that it can be done.
  • Robert O'Connor_3
    Robert O'Connor_3 Member Posts: 272
    boost

    Floyd,

    You mentioned disabling the boost feature on the Ultra...I looked in the manual but didn't see instructions for that. Would you let me know the steps? ...or is the computer interface needed to do this?

    Dave
  • Reynz_2
    Reynz_2 Member Posts: 98
    Disabling Boost

  • Floyd_16
    Floyd_16 Member Posts: 13
    Ultra \"boost\"

    Check this out...
    It tells you how to go in and manually change the parameters...
    Also page 16 tells how to disable the "boost"....
    simply change parameter 11 to "0".....

    Floyd

    http://www.weil-mclain.com/FTP/Ultra 310/UltraControlInterface.pdf
  • Robert O'Connor_3
    Robert O'Connor_3 Member Posts: 272
    boost

    ...I've seen that...it looks to me like it's describing Gascom software...I can't get to parameter 11 on the boiler's control panel.

    Dave
  • swanmech
    swanmech Member Posts: 69
    Control addendum

    You need to get W/M Control addendum Ultra interface kit.
    brochure #550-100-040/0804. You can use the boiler display or the interface kit/Gascom software.


    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • Floyd_16
    Floyd_16 Member Posts: 13
    I hate it when I'm right......

    Check out page 4.....

    Method #1 - Boiler display

    With the six buttons on the front of the boiler and the proper code the boiler can be both monitored and modified using the digital display.

    I suggest you take the time to print out the whole addendum and throughly read it if your going to make changes to your boiler on your own......

    Floyd

  • Robert O'Connor_3
    Robert O'Connor_3 Member Posts: 272
    boost instructions

    Thanks for your patience...I totally missed that page describing the keypad operation.
  • Rodney Summers
    Rodney Summers Member Posts: 748


  • adayton_2
    adayton_2 Member Posts: 130
    Sinbad House doubling

    so why not run TWO modcon boilers. Should be better capable of fine tuning to your present plus future load. Just a thought....

    Alfred
  • Reynz_2
    Reynz_2 Member Posts: 98
    Saga Continues

    Floyd. I've posted another issue with my PROFESSIONAL INSTALL. What do you think?

    http://forums.invision.net/Thread.cfm?CFApp=2&Thread_ID=40028&mc=12#Message272923
This discussion has been closed.

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