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HMW01 – LOW-FLOW SHOWERHEADS

Technical Clarification
Baths without Showers

Technical Clarification Number 
HMW01-T-EDG-2596

Guidance
2019-06-05

Water Efficiency Calculator

Where units have not been supplied with showers, the below Water Efficiency Calculator should be completed and submitted.

Compliance Guidance

Design Stage

- Plumbing drawings/specifications including make, model and flow rate of bath faucet(s); or 

- Manufacturer's data sheet for faucet(s) confirming the flow rate at 3 bar.

Post-Construction Stage

At the post-construction stage, the following must be used to demonstrate compliance:

- On site test results by the auditor of the flow rate at the highest flow per minute, using a timer and a measurement container; and

- Photographs of the installed faucet(s); or

- Purchase receipts and delivery note for faucet(s).

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Technical Clarification
Water tests

Technical Clarification Number 
HMW01-T-EDG-0125

Guidance
2017-11-07

Compliance Guidance - Post-Construction Stage

“Requirement On site test results by the Auditor (Accredited Professional) of the flow rate at the highest flow per minute, using a timer and a measurement container;” 

The final result to be entered into the EDGE App is the average of the highest three (3) flow rates per typology as shown below.

Unit tested

Flow rate (l/minute)

Typology 1 – Unit 1

6.2

Typology 1 – Unit 1

7.5

Typology 1 – Unit 1

6.5

Typology 1 – Unit 1

8.1

Typology 1 – Unit 1

8.9

Typology 1 – Unit 1

8.2

 

 

Typology 2 – Unit 1

7.1

Typology 2 – Unit 1

8.3

Typology 2 – Unit 1

7.9

Typology 2 – Unit 1

6.8

Typology 2 – Unit 1

7.6

Typology 2 – Unit 1

6.9

 

  • Typology 1 = (8.1+8.2+8.9)/3 = 8.4l/m -           Value to be entered on Post-construction tool report for typology 1

 

  • Typology 2 = (7.6+7.9+8.3)/3 = 7,9 l/m -           Value to be entered on Post-construction tool report for typology 2

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