Health Compliance Package – Domestic Hot Water Flow Temperature Outside Range

Objective/Method/Outcome

Objective: Determines if the domestic water temperature is within the acceptable range.

Method: Checks if the water temperature in outside temperature range for more than the acceptable amount of time

Outcome: If the temperature is outside the acceptable range an insight is generated.

Applicable System

HWS

Description

Monitors DHW Flow Temperature to ensure it is within 50-70 °C to prevent legionella growth.

This rule is part of the CopperTree Standard rule-set.

Diagnosis

  1. Temperature sensors may need calibration.
  2. Review programming logic.

Message

Domestic Hot Water Flow Temperature is outside acceptable range.

Rule Template

Insight Type: Fault Detection

Trigger Type: Active High

Default Priority

Medium

Logic

Logic used to determine if the domestic hot water is within range

Inputs

InputUnitTagsDescription
DHW Flow Temperature°C/°FDomestic Hot Water Supply TemperatureRecorded domestic hot water temperature
Threshold – Hours Outside Temperature RangeHrMinimum hours outside of the range that triggers insight
Low-Temperature Limit°C/ °FLower limit of temperature range
High-Temperature Limit °C/ °FUpper limit of temperature limit

Notes

Default Thresholds:

  • Hours Outside Temperature Range: 2
  • Low-Temperature Limit [°C]: 50°C or 122 °F
  • High-Temperature Limit [°C]: 70°C or 158 °F 

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