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ALH_4 Member Posts: 1,790
Yes on all counts, except you could probably use the Pinnacle T50, though that cuts it pretty close. The choice would be up to you. I do not know how conservative your heat loss numbers are.


  • new boiler

    I have a contractor who will replace my old natural gas fired boiler. I have done a heat loss analysis and concluded that I lose about 48,500 BTUH. My contractor is talking about using a Peerless Pinnacle with an 80 max input MBH to replace my older 100 MBH. He also suggested using an indirect fired water heater to replace the current gas-fired stand-alone unit in the house. Would this really save me money in energy costs? Also, since I estimated that there is more than enough linear feet of baseboard heat should I set the water temp to less than 180 degrees for additional savings?
  • Al Letellier_9
    Al Letellier_9 Member Posts: 929
    new boiler

    I agree with Andrew except I would use the larger boiler to satisfy the domestic hot water load. 50 MBH will slow the recovery considerably.
  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928

    Is the Pinnacle T-50's similarity to the Munchkin T-50 more than just coincidence?

    If so, does it (like the Munchkin T-50) actually have a boost to 80 mbh for DHW production? Didn't see such in a quick scan of the manual, but that wouldn't be the first time I missed something.
  • J.C.A._3
    J.C.A._3 Member Posts: 2,981

    I believe the T50 has a "boost" feature, that can get it to about 80,000 on a call for H.W. with proper control...of course!

    I think that most heatloss calcs. are somewhat questionable, and to err on the high rarely makes sense.

    Most times folks are guessing at the amount of insulation and unless they built the place...rarely know. As long as all the windows and doors are measured "outside-to-outside",in MOST homes built within the last 15 years...the calcs come out a bit high. (Manual J covers it's A$$ too!)

    As a backup calc., I also use the "radiation installed" method .If the place is comfortable with whats there AND... If the owner can use lower temps. and outdoor reset...all the better!JMHO. Chris
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