S28i Solar Booster

S28i Solar Booster

The S28i Solar Gas Booster uses all the technological advancements of our famous INFINITY units with built-in intelligence for solar boosting. It is factory set at a temperature of 70 degrees Celsius, offers 28 I/min maximum flow rate and has status monitoring. If you're short of room on the outside of your home, this is ideal when used with either a Rinnai Sunmaster or Rinnai Prestige Solar Hot Water System.


H: 60, W: 35, D: 23.5

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Flame Fire Specialist

Climate Specialist




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
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
Connection Sizes Gas/Hot/Cold (mm) 20/20/20
Status Monitor Yes
Width (mm) 357
Depth (mm) 245
Height (mm) 583
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
Water controller compatible No

Note: Can NOT be used as a stand alone continuous flow water heater

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