Flat Plate Systems

Flat Plate Solar Systems consist of a ground mounted storage tank that is installed separately to the collectors mounted on the roof. A small pump circulates the water from the cylinder through to the collectors to absorb the maximum available solar energy.

Stainless Steel tanks

Highly efficient Excelsior collectors with European Selective surface technology

Collectors and tank can be installed separately

  • 250 or 315 litre capacity storage
  • Electric boost or continuous flow gas boost configurations
  • Minimal impact on the aesthetics of your roofline
  • No need to reinforce the roof structure
  • Excelsior collectors offering European technology absorb the maximum available solar energy
  • Tanks manufactured in Australia
  • No sacrificial anode is required which saves on maintenance costs
  • Suitable for high wind areas to classification region D in accordance with AS/NZS1170.2:2011 using our additional cyclone frame
  • Warranty is 10 years on the tanks and 7 years on the collectors


Storage capacity Booster No Of Excelsior Collectors No of Bedrooms
System B 250L S20 2 1 to 3
System C 250L S26 2 3 to 4
System D 315L S26 2 3 or more
System E 315L S26 3 3 or more
System FM 250L 3.6 kW 2 1 to 3
System GM 315L 3.6 kW 2 3 or more
System HM 315L 3.6 kW 3 3 or more

Prestige stainless steel solar tanks are not available in all regions of Australia, please contact your local Rinnai Solar Specialist for more information.

Book a Service

Looking for support? Please get in touch and let us help.

Locate a Store

We'll help you find a Rinnai stockist so you receive the right advice and product, as locally as possible.