Gas HW Furnace Control

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    • #274097

      The burner on my gas forced water furnace no longer shuts off at the pre set tempurature. In other words , the burner flame is always on when the circulator is on. What is probably wromg? Thank you.

    • #289153

      Having the flame on when the circulator is on might be a right instead of a wrong. When the thermostat calls for heat, the burner and circulator turn on. If all the heat leaves the radiation to the rooms, then the water is not too hot and the burner is not shut off by the high limit while there is a call for heat. This is a normal condition for most cold-start gas boilers. If this seems somewhat unusual to you , then have it checked by a competent local plumber to make sure there is nothing wrong.

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