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boiler change

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polcat1p
polcat1p Member Posts: 28
i have a 1000 square foot rased ranch, and a utica 120000 btu boiler with tankless thats not that efficent. we plan on getting a newer 3pass boiler, but not sure what to get. i know someone selling a buderus G115/34(one year old) down the road from me for a good price. do you think thats to big? i would also have to get a indirect. i also herd good things about the system 2000, but i cant get one from a supply house around here. also if i get the g115/34 could i down fire it.

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  • Ironman
    Ironman Member Posts: 7,379
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    Can't Down Fire Buderus

    The Buderus cannot be down fired. It can only be up fired by as much as 10%. The heat exchange surface is already over-sized to extract more efficiency.



    The G115/34 is basically the same size as your present boiler - which is grossly over-sized!  It's probably 3 times the size you need.



    Do an accurate heat loss calc. and get a properly sized boiler. I doubt that your house requirement will be more than 45kbtu's - unless you live in Alaska.



    The smallest oil fired you're gonna find is probably around 70k btu's, which should more than cover your heat loss and do a good job with a properly sized indirect.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • meplumber
    meplumber Member Posts: 678
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    I second Bob's comments.

    Bob is spot on.  I have downfired a Buderus G115 only once and only after serious consultation with the factory.  It is not a standard practice.



    Regardless, unless you are in Barrow, Alaska, that would be grossly oversized for 1000 sq ft.  I am in Maine, with a -10 deg design temp and that is too big.



    I do not think that the System 2000 will fire down as low as you need.  If LP or natural gas is available in your area, consider a small modulating gas boiler that can modulate down to the output that you need.  A buffer tank is also an option.  find a contractor that can do a proper heat loss and chose the equipment to fit the application.  It will save you a lot of money in the long run.
  • polcat1p
    polcat1p Member Posts: 28
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    boiler change

    i had a freind do a heatloss, and it was 40000btus. i plan on adding 500 square feet to the basement this year. what do you think of the biasi b-3(67,000btu) with a outdoor reset? i dont want to go gas, as i would have to do lp. i think that is the smallest oil boiler thats tripple pass that they make?  if i went with the b-3 which is a good outdoor reset? what indirect is a good choice? im thinking a 30 gal superstore should be good. i have 1 bath, and going to add a full bath downstair when i add the 500 sq ft. 4 people living in the house.

    thanks 
  • Steamhead
    Steamhead Member Posts: 16,901
    edited March 2011
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    That's a good choice

    also look at the Burnham MPO-IQ84, with net rating of 64,000 BTU/hour. It comes with a very nice control system which uses add-in cards, and there is an outdoor-reset card available for it. So you wouldn't need to buy a separate reset control and mount and wire it. 
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Xray
    Xray Member Posts: 24
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    Crown

    Take a look at the Crown Scotch Marine.  Good boiler, efficient, maintenance-friendly.
  • Xray
    Xray Member Posts: 24
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    Crown

    Take a look at the Crown Scotch Marine.  Good boiler, efficient, maintenance-friendly.
  • Greg Maxwell
    Greg Maxwell Member Posts: 212
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    Biasi boiler

    I would use a B10-4, because when you add the addition, and the indirect you will be undersized with the B10-3. As far as the outdoor reset goes, we have been having good luck with the new Honeywell AQ251 controller, and regarding the indirect, I would recommend a Crown Megastore. This is a system that will give you years of efficient service.
  • Greg Maxwell
    Greg Maxwell Member Posts: 212
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    Biasi boiler

    I would use a B10-4, because when you add the addition, and the indirect you will be undersized with the B10-3. As far as the outdoor reset goes, we have been having good luck with the new Honeywell AQ251 controller, and regarding the indirect, I would recommend a Crown Megastore. This is a system that will give you years of efficient service.
  • polcat1p
    polcat1p Member Posts: 28
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    lp boiler

     i guess i could do a lp boiler. is there a good good one out there that does heat and hot water?
  • meplumber
    meplumber Member Posts: 678
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    There are a lot of options out there.

    The industry is kind of moving in the direction of Gas Modulating and Condensing boilers.  The technology allows us to modulate the flame down to about 30% of the full fire.  (This varies by manufacturer.)



    By adjusting the flame size to meet building heat demand, we are able to burner the fuel more efficiently.  In a radiant application, thermal efficiencies can move in the mid 90%'s range.  I personally prefer the Viessmann Vitodens with an indirect tank, but there are some very good models on the market that will do hot water through a flat plate heat exchanger.  The model you select should be driven by availability in your area and the familiarity of the contractors in your area.



    The equipment is not as important as the installing contractor is.  A bad contractor can make the best equipment in the world run horribly.  Likewise, a professional that understands his craft can install marginal equipment that runs like a top.  Do your homework on the pro.  Allow him to help you in your decisions.  Tell him what you are trying to do and allow his experience to help you make the selections that are best for your application.



    Good Luck.
  • polcat1p
    polcat1p Member Posts: 28
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    boiler change

    my buddy is the installer. He has the vitoden boiler with a dual coil viessmann indirect. thats nice but i dont want to drop 10000 on just the boiler and indirect. looks like the biasi mod boiler is nice, and the triangle tube solo.
  • CapeCodOilGuy
    CapeCodOilGuy Member Posts: 43
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    modulating oil

    Carlin is coming out (may be out by now) with a hi-lo domestic oil burner, the EZ H2L, with a 2:1 turndown ratio. It is only supplied as OEM with certain manufacturers, including Buderus. I have no idea what they cost, but this might be a solution for you instead of going to lp gas. The burner uses many standard parts, including the EZ chassis. Their website has an online brochure if you log in to the technician part of the website.
  • yazoo
    yazoo Member Posts: 5
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    the best

    be careful of the system 2000, if problems occur, they require special oem parts, so on as cold night and no parts could mean freeze up.

    modulating boilers (hi/lo fire) are nice, the crown scotch marine is nice, also the pensotti boilers are nice...



    vince   ironclad41@aol.com
  • Alan Welch
    Alan Welch Member Posts: 270
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    System 2000

    Having installed 100's of these I respectfully disagree.  With your choice of beckett, riello or Carlin,    burner and service parts are readily available.And I have never left a customer with no heat due to lack of parts. I can't say the same about one of the european boilers    From Energy Kinetics website-----------  If I need a part for System 2000, how do I get it?



    System 2000 uses industry standard components from

    thermostats, circulators, zone valves, relief valves, burners and burner

    components, to pressure reducing valves and backflow preventers. These

    are the same components used on most residential and commercial boilers

    and are typically available through local supply houses and are often

    stocked on most heating professional's service vehicles.







    If a heating professional cannot locate a part, they can

    simply call our customer service team for assistance at 800 323-2066.

    Parts not available through wholesale distribution include the Energy Manager control which can be temporarily bypassed

    to provide heat and hot water, the plate heat exchanger (used to make

    hot water for showers) which has union connections for easy cleaning or

    replacement, and the combustion chamber which can be removed for

    temporary operation. All parts can ship from our Lebanon, NJ factory,

    although they are also stocked with local System 2000 dealers and in our

    warehouses in Bangor, Maine and Fairbanks, Alaska.







    These items are very reliable and can be thoroughly [url=
    http://www.energykinetics.com/digitalManagerHeatingProfessional.shtml]tested in the field

    in just a few minutes; no special tools are required. The Digital

    Energy Manager is covered by a 5 year part warranty followed by a

    remanufacturing program that covers the control for over 20 years. See

    your warranty for specific details.
  • billtwocase
    billtwocase Member Posts: 2,385
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    thanks Alan

    I was going to post about the same thing. I have installed and serviced these since 1984, and have never had to leave one inoperable due to a part needed. They do have some not your average components, but anything is doable. It is always to a service company's benefit to keep those uncommon parts on hand like backboards, chambers, etc. They are user friendly once you get to know them
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