SR

Smart-ready service DHW-3 · Domestic hot water

Report information regarding domestic hot water performance

In short

  1. 1DHW-3 concerns the reporting of performance data on domestic hot water systems in a building.
  2. 2The service has five functionality levels, ranging from no reporting to predictive maintenance with fault detection.
  3. 3DHW-3 falls within the Domestic Hot Water domain and counts towards method A of the Smart Readiness Indicator.

The levels

  1. Level 0

    None

  2. Level 1

    Indication of actual values (e.g. temperatures, submetering energy usage)

  3. Level 2

    Actual values and historical data

  4. Level 3

    Performance evaluation including forecasting and/or benchmarking

  5. Level 4

    Performance evaluation including forecasting and/or benchmarking; also including predictive management and fault detection

What does DHW-3 involve?

DHW-3 is a smart-ready service within the Domestic Hot Water domain of the Smart Readiness Indicator (SRI). The service assesses how well a building can report information about the performance of its domestic hot water system.

Reporting means that a system collects and makes data accessible, such as temperatures or energy consumption. The more comprehensive this reporting, the higher the functionality level.

What functionality levels exist?

The SRI methodology defines functionality levels from 0 to 4 for each smart-ready service. For DHW-3, these levels progress as follows:

  • Level 0: No reporting present.
  • Level 1: Display of current values, such as temperatures or sub-metering of energy consumption.
  • Level 2: Current values supplemented with historical data.
  • Level 3: Performance evaluation with forecasting and/or benchmarking.
  • Level 4: Performance evaluation with forecasting and/or benchmarking, supplemented with predictive maintenance and fault detection.

Each higher level requires more functionality from the building management system (BMS) or building automation and control system (BACS).

Why does this service count towards the SRI score?

DHW-3 is included in method A, the simplified assessment method of the SRI. This means the service counts towards both the comprehensive and simplified assessment of a building.

A building's final score is determined using seven impact criteria and three key functionalities, which are weighted equally. Reporting functionality such as DHW-3 contributes to criteria such as energy efficiency and user convenience.

Relevant for these building types

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