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  1. Neo47

    Uneven heating on HVAC heating coil (air-water HEX, copper fin tube)

    We have a air-hot water heat exchanger on an Air handling unit that has uneven heating. Attached photos explain the situation. The coils are made of copper. The air handlers use 100% outside air. The IR photos show that when the valve opens hot water fills up the supply header but does not...

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