Documents Required for Integral HPWH Registration

This guide outlines the documentation requirements for modelling and registering an integral heat pump water heater (HPWH) system for incentives in Australia. An integral HPWH is defined by a system where the condenser is integral to the tank (e.g. wrap-around coil or microchannel heat exchanger).

Document Summary

Phase	Documents Required
AS/NZS 4234 modelling	AS/NZS 5125.1 report and test data (COP); AS/NZS 4692.1 test report (standing heat loss); Technical Details Sheet; Tank drawing; Schematic and bill of materials
Submission to SRES, VEU, ESS	AS/NZS 2712 certificate; Installation manual; Data plate images; Manufacturer declarations; Authorisation letter (if applicable); EESS registration and electrical certificate of conformity

Overview

Documentation required to submit an application to an Australian incentive scheme falls into three categories:

Testing — electrical safety, water safety, design and construction, energy efficiency
Certification — AS/NZS 2712, AS 3498, electrical safety
Technical details — drawings, schematics, specifications, manual, data plates, declarations

Conformity Assessment Bodies (CABs)

Certification to the relevant standards is provided by Conformity Assessment Bodies (CABs) who are JAS-ANZ Accredited. EnergyAE recommends the following CABs for HPWH certification:

SAI Global
IAPMO
Global-Mark

Testing

We recommend discussing precise testing requirements with your CAB early in the project. The two energy efficiency test reports EnergyAE requires to conduct AS/NZS 4234 modelling are:

AS/NZS 5125.1 Report and Test Data

AS/NZS 5125.1 measures the COP and power draw for HPWHs across a range of ambient test conditions. These are used to create regression functions used in AS/NZS 4234 annual performance modelling.

Testing can be conducted by any NATA-accredited (or equivalent) laboratory, such as Intertek, CVC, SGS, VIPAC, or Yukawa. Request 1-minute test data for test condition 2 and test condition 5 (low temperature test data) from the test lab.

AS/NZS 4692.1 Test Report

AS/NZS 4692.1 measures the standing heat loss for thermal storage tanks. Testing can be conducted by any NATA-accredited (or equivalent) laboratory, such as Intertek, CVC, SGS, VIPAC, or Yukawa.

Certification

Three forms of product certification are required to show compliance:

Electrical Safety Certificate of Conformity
AS/NZS 2712 — Design and Construction
AS 3498 — Water Safety

Products must appear on these certificate schedules in the brand and model name of the company who will later claim incentives.

Electrical Safety Certification

Electrical Safety Certification and RCM registration use the Electrical Equipment Safety System (EESS).

Manufacturers must use electrical safety test reports to apply for an Electrical Safety Certificate of Conformity (SAA Certificate), then register the product on the EESS. Certification must be provided by a JAS-ANZ accredited body such as SAA Approvals or SGS Australia.
Australian importers must use EMC test reports and the SAA Certificate to apply for the Regulatory Compliance Mark (RCM) on the ERAC Database.

AS/NZS 2712 and AS 3498 Certificate

AS/NZS 2712 specifies the performance-based design and construction required for HPWHs. AS 3498:2020 specifies the safety and public health requirements, including legionella control methods. Certification must be provided by a JAS-ANZ accredited body such as IAPMO or SAI Global.

Model Identification

It is extremely important that the system, heat pump, and tank model IDs are consistent between certificates, test reports, and other technical details.

For all-in-one units: the system model ID should be identical to the HP and tank model ID. This model ID should be consistent across all documentation. Where the model name is not consistent, a manufacturer declaration is required.
For split systems: different model names may exist for the HP, tank, and system. This must be handled carefully to ensure consistency.

In summary:

System model ID — the overall name that will appear on certificate registers
Heat pump model ID — the name as per the dataplate and AS/NZS 5125.1/4692.1 test reports
Tank model ID — the name as per the tank data plate, tank drawing, and test reports

Technical Details

Technical Details Sheet (TDS)

Technical details of each model must be provided for modelling and applications. Please download the template, fill out the relevant details, and send back to EnergyAE.

Tank and Condenser Diagram

Tank diagrams must be clearly labelled in English. The drawing must state the brand and model name consistent with the AS/NZS 2712 certificate of the applying company, not the original manufacturer’s brand/model name.

Drawings should specify the positions of:

Cold water inlet
Hot water outlet (to load)
Top and bottom of condenser (coil/microchannel)
Heat pump temperature sensors (e.g. daily HP control, weekly legionella control)
Element and thermostat (if applicable)

Drawings should be dimensioned with at minimum:

Tank inner diameter
Tank wall thickness
Condenser dimensions (coil: tube length, inner diameter, thickness, material; microchannel: strip length, number of strips, internal cross section)
Port and sensor heights, and total tank height, from base of tank

Installation Manual

The installation manual must include:

Brand and model names
Plumbing schematic showing piping and control valves
Warranty details: the whole product (tank, compressor, and parts) must be covered for at least 5 years from the date of installation. Must include the Australian Consumer Law warranty statement and contact details for warranty obligations in Australia.

The manual must be consistent with the AS/NZS 4234 modelling and other submitted documents, particularly control settings and legionella control.

Control Logic Information

To ensure AS/NZS 4234 modelling matches real product performance, provide the following for each model:

What is the name of the default setting?
What is the desired heat pump and element set point and dead-band?
Can users permanently change control settings?
If a user changes to a different mode, will it automatically revert to the default mode within 24 hours?

Authorisation Letter

If models are purchased from a different manufacturer and the test reports reference the original manufacturer’s models, a letter of consent from the original manufacturer is required, authorising the use of their test reports. EnergyAE can provide an authorisation letter template.

Manufacturer Declarations

Required if any model names differ from test reports or if testing was conducted on a prototype unit. EnergyAE will prepare this and send it for you to sign.

Testing Laboratories (Contacts)

Laboratory	Services	Contact
Intertek SAI Global	AS/NZS 4692, 5125 testing; AS/NZS 2712, AS 3498 certification	Felix Li — Felix.Li@intertek.com
IAPMO	AS/NZS 2712, AS 3498 certification	Adam Wegmann — Adam.wegmann@iapmo.org
CVC	AS/NZS 4692, 5125 testing	Tao Yucheng — taoyc@cvc.org.cn
VIPAC	AS/NZS 4692, 5125 testing	Marcus Klein — marcusk@vipac.com.au
SGS	AS/NZS 4692, 5125 testing; electrical safety certificate	sgs.com/en-au
SAA Approvals	Electrical safety certificate	saaapprovals.com.au
Yukawa	AS/NZS 4692, 5125 testing	Satya Mavuri — contact@yukawalab.com.au

Get in touch with EnergyAE if you need help navigating the documentation requirements for your HPWH registration.