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indirects, solar heaters and mixing valves

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Al Letellier_9
Al Letellier_9 Member Posts: 929
in THE MAIN WALL
check the rating on the mixer of choise. it may have a minimum or maximum rating for inlet water. I would think cold water would be the way to go. That pre-heated water could be quite warm and the mixing valve may spend a lot of time "hunting" for stable output

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  • STEVE PAUL_3
    STEVE PAUL_3 Member Posts: 126
    indirects, solar heaters and mixing valves

    I want to install a mixing valve on my indirect water heater.I am using my solar hot water heater as a pre-heater for the indirect water heater cold supply. want to know if If I install a mixing valve would you use the pre-heated water or a direct connection to the domestic cold water for tempering?
  • Brad White_150
    Brad White_150 Member Posts: 29
    I agree for similar reasons

    There may be no safe-level high limit on your pre-heating tank. Might you have water in there as hot as the primary tank? And if so, how would it be tempered without cold water? Tempering is defeated. You have no safe choice.

    I would stick with cold.

    My $0.02

    Brad
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