Why hot water is stored at 60 °C, distributed hot, and how dead legs are limited.
Storage, distribution and delivery are different checks
In a conventional temperature-control regime for Legionella, store hot water at least at 60 °C. The unblended hot supply should reach at least 50 °C within one minute at outlets; the corresponding healthcare target is 55 °C. A secondary circulation return should meet its specified return temperature, normally at least 50 °C in the general regime.
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