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outdoor reset

Jim_109
Jim_109 Member Posts: 45
in THE MAIN WALL
so are you saying do not combine an outdoor reset with a small boiler?

I am considering upgrading to a low mass, three pass boiler oil boiler, outdoor reset and an indirect. Buderus, Peerless are a few examples of the brands considered.

On many occassions on this site I have read mnay positive comments about outdoor resets.

Comments

  • Jimbo_5
    Jimbo_5 Member Posts: 222
    outdoor rerset

    first, is it possible to install an outdoor reset on a Weil Mclain CGi-3? If so, is it a wise addition? How do you decide location placement of the outdoor sensor for optimal operation? I mean it seems that trees, shade, excess sunshine, could adversely affect what is detected.
  • GW
    GW Member Posts: 4,896


    I'm not huge with w/m, is this a basic gas unit? I stuggle with outdoor reset hooked up to small/medium mass boilers because they cycle like a dog in the mild heating days.

    Has anyone ever used on-off t-stat during mild weather and flipped to outdoor reset in cold weather?

    Just my 2 pennies

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  • Big Ed_3
    Big Ed_3 Member Posts: 170
    Reset Location

    Mount the sensor on a North -West location and not above a window .
  • Jimbo_5
    Jimbo_5 Member Posts: 222
    So, is it a yes, or no?

    I'm still wondering if an out-door reset is OK for a Weil Mc CGi-3, or not such a good idea? I have heard several friends say "yes," while a few others say "no."
  • ALH_4
    ALH_4 Member Posts: 1,790
    Sure

    Tekmar 256 or Tekmar 260 (w/indirect DHW) for boiler temperature reset. If you have radiant floors or other low temperature loads, the Tekmar 356 or Tekmar 363 are good controls. If you have a combination of high and low temperature check the Tekmar 364

    Boiler low limit should not be below 135-140°F to prevent flue gas condensation.
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