a) Taps within 3 meters of heat generation: Hot water distribution network can                  reach up to 3 meters from the generation plant
        b) Taps further than 3 meters of heat generation: Hot water distribution network                can reach more than 3 meters from the generation plant.
        c) Circulation System or Unknown: Hot water circulation system that moves hot                water to fixtures quickly without waiting for the water to get hot.

   

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