How do I model in TREAT a combination boiler/DHW improvement?

Model the Boiler as “Boiler, water”, AFUE per AHRI or Manufacturer. Don’t forget the Reset Control if available.

Model the DHW as “Instantaneous water heater”, Tank Vol. = 1 gal, Energy input = Same as boiler, Thermal (Recovery) Efficiency, % = Same as boiler AFUE, Energy Factor = Same as AFUE.

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