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Why no F3 Riello option for smaller Burnham MST288 (Megasteam)? Only Beckett...

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Underdog
Underdog Member Posts: 16
edited December 2015 in Strictly Steam
Burnham specs a F5 Riello (0.75 to 1.65 GPH) for the higher output MST396 but includes no Reillo F3 ( 0.50 to 0.95 GPH) in the specs for the smaller MST288. There is a Beckett AFG (BCB9006) option listed for the MST288. Why no Riello F3? There does not appear to be a dimension or pump pressure issue. Does Burnham have an issue with the F3?







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  • Underdog
    Underdog Member Posts: 16
    edited December 2015
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    US Boiler's "Crown" line of boilers leaves out the F3 on the smaller triple pass as well.


  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    Not every combination makes for a happy marriage. Some burners just work better in some boilers. Believe me, Riello tried to develop a spec and it just didn't work for some reason. Beckett and Carlin have the same issue on certain models/sizes.
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  • Underdog
    Underdog Member Posts: 16
    edited December 2015
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    Would that explain why Beckett went to the trouble of adding low fire baffles to raise the velocity on burner like this one with a low firing rate? Maybe baffles aren't an option on Riello.





    https://beckettcorp.com/support/tech-bulletins/understanding-the-low-firing-rate-baffle/

  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    No, the Riello works fine in other low input applications such as a Biasi B10-3. Just not in this one. Boiler mfg's don't want to lose a sale because somebody's favorite burner isn't applicable to their boiler and obviously a burner mfg wants their burner on every boiler. So, why isn't it available? Because, they don't play well together! And no Mfg wants irate customers and lawsuits even if it means a few lost sales. It's just that simple.
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  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    Megasteam, MPO, Crown and NY'er are all the same casting, hence if it doesn't work in one, it won't work in any
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    Bob Bona_4Zman
  • SWEI
    SWEI Member Posts: 7,356
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    Robert O'Brien said:

    Boiler mfg's don't want to lose a sale because somebody's favorite burner isn't applicable to their boiler

    Unless you're Burnham.
    Robert O'Brien
  • hvacfreak2
    hvacfreak2 Member Posts: 500
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    Robert O'Brien said:

    Megasteam, MPO, Crown and NY'er are all the same casting, hence if it doesn't work in one, it won't work in any

    I believe that the Megasteam is a very specific design and is not shared with any other model. Not to discount any other point in your statement however.

    The Megasteam manual does mention that alot of time and effort were spent on developing flame shape patterns that performed in the design. But it looks to me like they settled for the AFG only on the smaller 288 boiler. The other models even list Carlin specs in the manual.
    hvacfreak

    Mechanical Enthusiast

    Burnham MST 396 , 60 oz gauge , Tigerloop , Firomatic Check Valve , Mcdonnell Miller 67 lwco , Danfoss RA2k TRV's

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  • Robert O'Brien
    Robert O'Brien Member Posts: 3,541
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    Not exact on the Megasteam but awfully close, open the swing door and they look the same inside.
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