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series 8900 RBI 8900 Series atmospheric combustion units offer
thermal efficiencies of 81% and are the most durable and serviceable boilers on the market. They offer a wide 420 to 1,900 MBH size range for 8900 series applications from car washes to office buildings. All models come with intermittent pilot ignition, adjustable high limit, 24V gas valve with either single-stage or two-stage firing. A motorized gas valve for modulation firing is also available.

  • 81% efficiency
  • 420 to 1,900 MBH
  • Bronze headers - standard on water heaters
  • Cast Iron headers - standard on boilers
  • Simple Honeywell controls standard
  • Reversible headers and left or right gas train connectors
  • Structural steel frame
  • Slide out heat exchanger and burner tray
  • Threaded connections
  • Front mount 24V controls