S28i Solar Booster
S28i Solar Booster
Servicing multiple fixtures at once
The Rinnai S28i Solar Gas Booster combines the cutting-edge technology of our renowned INFINITY units with advanced intelligence designed specifically for solar boosting.
Ideal for use with Rinnai Sunmaster or Prestige Solar Hot Water Systems, the S28i ensures a reliable supply of hot water, even during periods of low solar energy. Factory set to 70°C and capable of delivering a generous 28 litres per minute, it’s perfect for servicing multiple fixtures in busy households. Its compact internal design is ideal for homes with limited external space.
Featuring built-in status monitoring, the S28i provides efficient, high-performance operation and long-lasting, energy-smart comfort.
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Designed specifically for solar
Never runs out of hot water
12 Year Heat Exchanger warranty
Superior technology
- Quality Japanese design and manufacturing
- Precise temperature control for safety and convenience
- Compact design allows installation flexibility
- Suitable for higher ambient water temperatures
- Compatible with low flow rated shower fixtures (3 Star - 7.0 to 9.0 l/min)
Rinnai quality
- After sales support
- 12 year warranty on heat exchanger
The product information on this website (comprising product brochures, warranty information, installation manuals, diagrams, specifications and representations) relates to current products. This information may be different for superseded products. For superseded products please contact Rinnai to confirm product information.
| Dimensions | mm |
| Height / Width / Depth (mm) | 583 / 357 / 245 |
| Height inc Brackets (mm) | 648 |
| Hot Water Outlet from wall (mm) | 91 |
| Hot Water Outlet left from Centre (mm) | 110 |
| Cold Water Inlet from wall (mm) | 70 |
| Cold Water Inlet right from centre (mm) | 27 |
| Gas Connection from wall (mm) | 99 |
| Gas Connection right from centre (mm) | 89 |
| Gas Connection Length from base (mm) | 36 |
| Cold Connection Length from base (mm) | 46 |
| Hot Connection Length from base (mm) | 36 |
| Technical Information | Values |
| Colour | White |
| Factory Default Temperature (Celsius) | 70 |
| Water Pressure (kPa): Minimum | 220 |
| Water Pressure (kPa): Maximum | 1000 |
| Gas Rate (MJ): Maximum | 210 |
| Flow Rate (L/min): Maximum | 28 |
| Star Rating | N/A |
| Connection Sizes: Gas / Hot / Cold (mm) | 20 / 20 / 20 |
| Status Monitor | Yes |
| Compatible with water controllers | No |
Note: Can NOT be used as a stand alone continuous flow water heater
Photography
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Rinnai Infinity Gas Continuous Flow Hot Water S28i Solar Booster (right grey background)Preview
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Rinnai Infinity Gas Continuous Flow Hot Water S28i Solar Booster (front)Preview
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Rinnai Infinity Gas Continuous Flow Hot Water S28i Solar Booster Controller (close up)Preview
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Rinnai Infinity Gas Continuous Flow Hot Water S28i Solar Booster (right)Preview
