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Buderus G115 28 Cold Start

RoosterBoy Member Posts: 459
hay guys last week when my installer was installing new duct work in my house we had no heat in the house I had to heat with wood for a few days wile duct work was being installed.

I have a g115 with 2109 controller and lt 160 hot water tank we put the 2109 on summer mode because there would be no call for heat

since we don't use allot of water the boiler only ran once a day and the temp of the boiler went down way below the 100deg I was wondering. in the summer is this ok for the boiler to start off cold everyday? or should the boiler stay at a set temp. my tech thought this was odd because most boilers he works ok stays a set temperature

im just worried that cold start will shorten the life of the boiler is there anything I should do or is this normal



  • Mark Eatherton1
    Mark Eatherton1 Member Posts: 2,542
    WHat Kevin said...

    This ain't your grandpas boiler any more. It's made with a different type of cast iron that is resistant to the corrosive tendencies of cold starts. It'll be just fine.

  • Mike Kraft_2
    Mike Kraft_2 Member Posts: 398
    Rooster Boy

    Quit your cackling:)...............It'll be alright.


  • Mark Walnicki_2
    Mark Walnicki_2 Member Posts: 32
    Always learning

    And always confused!

    I thought you should never cold-start any oil fired boiler to avoid condensing inside the boiler, and prevent all those nasty stalagmites, (or is is stalactites, I always forget), from forming the rock-hard blockages that I've seen on boilers with pinned sections.

    Is Buderus immune to these problems? If so, is it the triple-bypass design, or the cast iron itself?

    Can you tell I'm not an oil guy? :-)
  • Ron Schroeder_3
    Ron Schroeder_3 Member Posts: 254

    The main key to cold start is not the temperature that the boiler starts at but rather the temperature that it ends up at by the end of each firing. The Buderus should get up to a minimum of 130 degrees if I remember correctly.

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