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I bought a used NTI boiler

BigBigEd
BigBigEd Member Posts: 11
I'm new to this forum. I've installed a few slant fin boilers. Excuse the lack of technical wording.



Recently, I bought a used NTI Trinity T200 mod/con boiler for $300.



I chatted with the previous owner for a couple hours to make sure he wasn't selling me a lemon.



He was a pretty technical guy, and has lots of money. He was convinced (maybe for good reason) to go with two Viseman boilers for his 5000 sq foot bungalow. He wanted the boilers in a different location and really wanted redundancy to protect the property if he was away.



He was happy to give me a great deal on the old one, and the $300 was clearly not a big deal to him. He wanted to see the boiler used somewhere. His experience was a bunch of premature burned out igniters....sounded like a cycling problem to me. He said he had to constantly blow out the condensate tube to get it to work again. The tube was restricted and he thought it didn't have the proper fall. Other than that, he said the unit was great.



The unit is a T200 and is about 6-7 years old.



The property that it will go into is a 3 storey, 100 year old, 4500 sq ft, with old radiators.



Questions..



1. Should I bother? Is the unit worth installing?



2. Any known problems with this unit ( I really like the triangle tube, but this boiler practically free) This unit in Canada sells for aprox. $6,000 with tax



3. I thought about leaving the slant fin in the boiler room as back-up. Should I bother?



4. Is this unit ready for domestic HWT



5. I've heard that retrofitting an old system with old rads isn't great because there isn't adequate heating surface area on the old rads to lower the water temp enough so that the boiler works in the efficient condensing temperatures. Thoughts?



6. Do you think I'll save much fuel (NG)?



I have a pretty good contractor who has installed NTI Trinitys. He told me that the heat exchanger need to be cleaned thoroughly every year.



I appreciate any help.

Comments

  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669
    NTI

    Old style cast iron radiators are great with high efficient boilers.

    I would suggest installing a Y strainer to keep the crud out of the boiler. If the tubes of the heat exchanger get plugged it will destroy the boiler.

    With cast iron radiators you can probably have the max temp set at 160*.
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,576
    used boiler experiment

    has this system always been hot-water?

    if so, then the crud is probably all ready to flow out when you disconnect the old boiler, although a strainer is a very good idea, if it will be cleaned regularly.

    is this new boiler sized properly to the heat-loss?--nbc

     
    MosbyGagnon
  • BigBigEd
    BigBigEd Member Posts: 11
    Always water

    This system has always been hot water, yes. I've done a heat loss, and the 188K BTU input is adequate.



    I took out a 300k BTU boiler and replaced it with a 175K BTU after doing the heat loss.
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669
    Y strainer

    The Gianoni (sp) heat exchanger should ALLWAYS  have a Y strainer.
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    I believe your boiler may have been recalled...

    Not a big deal to change it out, but the original trap they used on their condensate drains, got brittle and had to be replaced.



    http://www.nythermal.com/index.php?page=important_safety_updates



    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • BigBigEd
    BigBigEd Member Posts: 11
    Why was my post deleted?....new to the forum

    Not sure why my post was deleted....thoughts?
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    It wasn't your posts that were deleted...

    Steve Whitbeck had a bunch of duplicates that were eliminated.



    So long as your post doesn't mention price, and you are not mean and vicious, your posts won't be removed...



    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • BigBigEd
    BigBigEd Member Posts: 11
    Brittle condensate tube

    You're right,



    The condensate tube def looks brittle, and I'll replace it.



    What is the need for a loop ( or trap) in the condensate tube?



    Is it important. I see a lot of people not doing it on equipment.



    Thanks, again
  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
    Loop is critical...

    It serves as a P trap for the condensation and provides a means of keeping the flue gas from getting through the tubing and into the room.



    If there is not a trap, then the flue gas from the combustion process can flow out the same line and into the mechanical room. Follow the instruction manual to the T.



    ME
    It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669
    Bad drain hose

    Munchkin had a bad batch of drain hose assemblies but then they shipped them with a clamp that had WAY too much tension and when the new hose got hot the clamp bit throught the hose.
  • AFred
    AFred Member Posts: 81
    NTI

    My 2 cents; Dump the Trinity, look into the Triangle Tube(or anything else), you'll earn your 300 bucks back in 3 years or less by not needing it fixed anually. I find the parts a little tough to get ahold of here in minneapolis(I blame the wholesaler). I do think there are too many consumable parts on the Trinity.

    Is it a T200 or a Ti200? the T200 is the early version, ie; more issues.

    Hey Mark I think I've earned the right to be "mean and vicious" with how many times a Trinity has gotten me out of a warm bed and into a cold van in the wee hours of the night!

    -Andy
    SuperTech
  • BigBigEd
    BigBigEd Member Posts: 11
    But, But, But.....

    I got this thing at such a great deal......oh, well.



    I told the guy that I'll only give him as much as I will feel comfortable trashing the thing....so $300 it was....so, I have no problem not using it.



    The thing is, triangle tubes and even mew NTI's are 6-7 grand in Ontario, so isn't it worth trying this trinity and servicing it every year?....the guy had little problem with it.



    My installer is coming to check out the exchanger...something about "if every 3rd ring is deformed, then the exchanger is shot".



    He agrees with most that if this boiler was installed improperly, it could be useless, and he is very detailed in his installations.



    NTI's are quite common here (Toronto).



    It is a T200 and not a Ti200.



    I thought about leaving the cast iron boiler in place and installing this, so that the old boiler (not that old) could be used as a back-up. It would be turned off and valved to work completely independant of the Trinity.



    Does the tri-anglr tube need no servicing every year?



    BTW, I appreciate your 2 cents.
  • tim smith
    tim smith Member Posts: 2,738
    NTI boiler ?

    Nyet!
  • Steve Whitbeck
    Steve Whitbeck Member Posts: 669
    deformed tubes

    The tubes get deformed because of overheating, I wouldn't say that it means the exchanger is bad.
  • BigBigEd
    BigBigEd Member Posts: 11
    Is it toast

    So, my installer checked the heat exchanger, and showed me where it is deformed, as he predicted.



    He said the boiler is toast.....anyone else disagree.



    I don`t really want to junk it, but if it`s no good, I don`t want to install it, either.
  • AFred
    AFred Member Posts: 81
    NTI

    Do what I do when I rip them out. Thow it in the back of your shop and cannibalize it for spare parts.

    -Andy
This discussion has been closed.