An armstrong Digital Recirculation Valve (DRV) - the 'Brain'- is helping to ensure Marriott Hotels deliver high guest comfort and satisfaction through domestic hot water maintained at a constant temperature of 60℃ with no fluctuations. The newly built Marriott Courtyard hotel in Aberdeen, which opened late 2013, required a superior, more efficient system than that normally found in hotels, where hot water is often produced in a buffer tank, using boiler water through a heat exchanger and a primary three port valve linked to a temperature sensor and control panel. This system produced variations in temperature such that delivered water could be uncomfortably cold or too hot, which at the extreme level could result in scalding.
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