Solar Water Heater Documentation Checklist
Solar water heater applications depend on a consistent evidence pack. The collector, tank, booster, controller, pump, schematic, certificates, and model names all need to describe the same system that will be sold in Australia or New Zealand.
EnergyAE can review partial evidence early, but AS/NZS 4234 modelling and scheme submission cannot be completed until the required test reports, drawings, control details, and certification evidence are clear.
What this applies to
This checklist applies to residential solar water heater systems being prepared for AS/NZS 4234 modelling, SRES solar water heater listing through CER, VEU product application, ESS application under HEER, or product comparison before submission.
It covers flat-plate, evacuated tube, thermosiphon, pumped, electric-boosted, and gas-boosted solar water heater systems.
Documents required
| Document | Why it is needed |
|---|---|
| AS/NZS 2535.1 or EN 12975 collector performance report | Provides collector efficiency and heat loss data for AS/NZS 4234 modelling. |
| AS/NZS 4692.1 tank heat loss report | Provides standing heat loss evidence for storage tanks up to 700 L. |
| Tank heat loss calculation as per AS/NZS 4234 | Used where a tank is greater than 700 L and a test report is not available. |
| AS/NZS 2712 certificate and schedule | Supports design and construction certification and confirms listed system models. |
| AS/NZS 2712 Appendix F no-load operation test evidence | Supports no-load system operation evidence where required for the system family. |
| AS/NZS 4552 gas booster report | Required where the solar water heater uses a gas booster. |
| Electrical safety certificate | Supports electrical safety evidence for electric-boosted and pumped systems. |
| Potable water and plumbing certification | Supports water safety and plumbing compliance evidence. |
| Tank drawing | Provides tank geometry, fitting heights, element positions, sensor positions, and heat exchanger details. |
| System schematic | Shows the collector array, tank, booster, pump, controller, sensors, heat exchanger, and pipework. |
| Installation manual | Confirms installation arrangement, pipe insulation, controls, warranty, and product claims. |
| Data plate images | Confirms model names, ratings, tank capacity, electrical details, and product identification. |
| Pump evidence or hydraulic analysis | Supports pump flow rate and power input used in modelling. |
| Control settings or declaration | Confirms differential controller settings, pump logic, boost settings, frost control, and maximum tank temperature. |
| Pipe insulation specification | Supports heat loss assumptions for solar and booster pipework. |
| Authorisation letter or model equivalence declaration | Explains OEM branding, model name differences, or use of test reports from a related model. |
Collector performance evidence
The collector performance report is the main input for the solar collector model. It should identify the collector model, test laboratory, test standard, efficiency coefficients, heat loss coefficients, incidence angle modifier data where applicable, and any assumptions needed to interpret the report.
For evacuated tube collectors, provide incidence angle modifier data if it is reported separately from the main collector test report.
If a collector is sold under a local brand but tested under an OEM model name, provide a certificate schedule, authorisation letter, or declaration that clearly links the two names.
Tank and heat exchanger evidence
For tanks up to 700 L, provide the AS/NZS 4692.1 tank heat loss report. For tanks greater than 700 L, EnergyAE needs enough drawing and insulation information to calculate tank heat loss as per AS/NZS 4234.
The tank drawing should show internal volume, internal diameter, internal height, wall thickness, insulation details, and the height of every inlet, outlet, element, thermostat, sensor, and heat exchanger connection above the tank base.
Where the system uses an internal coil or heat exchanger, provide the tube length, internal diameter, wall thickness, material, and connection positions. If the drawing only shows a marketing outline, it is usually not enough for modelling or audit evidence.
System schematic
The schematic should show the exact system configuration being submitted, not a generic plumbing concept.
It should identify the system model, collector model and quantity, tank model and quantity, booster type, pump model and location, flow direction, controller, sensors, heat exchanger, pipework, valves, and any alternative configurations included in the application.
For thermosiphon systems, the schematic should still show the collector and tank relationship clearly enough to confirm the submitted configuration.
Pump, flow, and pipework information
Pumped solar water heater systems need evidence for collector loop flow rate and pump power. This can come from a pump test report, pump specification, controller setting, flow meter setting, hydraulic analysis, or another clear source that supports the modelled value.
Provide the pipe sizes, approximate pipe lengths where relevant, and insulation thickness and thermal conductivity. The installation manual may be enough if it gives the required insulation specification for the submitted system.
Control and boost information
Control settings affect AS/NZS 4234 results. Provide the differential controller on and off temperature settings, frost protection behaviour, maximum tank temperature setting, pump control method, and any user-adjustable modes that can change normal operation.
For electric-boosted systems, provide the element capacity, thermostat setpoint, deadband, and element location. For gas-boosted systems, provide the AS/NZS 4552 evidence and enough information to identify how the gas booster is connected and controlled.
The settings should match the product that will be supplied to market. If the manual, declaration, and schematic describe different control logic, resolve that before submission.
Certification and submission evidence
The AS/NZS 2712 certificate schedule should list the system models being submitted. The model names should match the application, manual, data plates, tank drawing, schematic, and AS/NZS 4234 report.
SRES submissions through CER also require the Part C model listing and AS/NZS 4234 evidence. The CER accreditation page publishes round opening dates and submission requirements. VEU and ESS submissions may require additional application forms, declarations, validation of test reports, and scheme-specific evidence depending on the pathway.
Where a test report was issued under an original manufacturer model name, prepare the supporting authorisation letter or model equivalence declaration before submission.
Common issues
Common document issues include collector reports that do not list the submitted brand name, tank drawings without sensor or fitting heights, schematics that omit the pump or controller, and certificates that do not list every submitted model variant.
Other frequent problems are installation manuals that describe different boost settings from the modelling inputs, data plates that use old model names, missing incidence angle modifier data for evacuated tube collectors, and unclear pipe insulation assumptions.
For gas-boosted systems, missing or mismatched AS/NZS 4552 evidence can delay the submission. For pumped systems, missing pump flow and power evidence can delay modelling.
What EnergyAE needs from you
Send the latest PDF reports, certificate schedules, drawings, manuals, data plate images, and declarations for the product as it will be sold.
If testing has not started, confirm the target schemes before locking in the collector, tank, booster, and no-load test scope. A test program that supports one pathway may still leave evidence gaps for another.
Get in touch with EnergyAE if you need help navigating the documentation requirements for your solar water heater registration.