Rinnai M Series Boiler

Rinnai M-Series Condensing Gas Boiler

I-Series Cold Climate

Comfort & Convenience

  • Simultaneous delivery of hot water and home heating without disruption
  • Servo based by-pass control for precision domestic hot water (DHW) temperature control
  • Multiple heating zones possible
I-Series Operational Performance

Optimal Performance

  • 95% AFUE Efficiency
  • High volume hot water production
  • Outdoor reset to optimize home heating performance
I-Series Easy Installation

Flexible Installation

  • Compact design
  • Versatile venting options
  • Easy parameter settings
  • Natural gas (NG) with Propane gas (LP) conversion kit included




Models – M060C, M090C, M120C, M160C

Appliance Type – Wall-Mounted, Gas-Fired Combi Boiler

Gas Types – Natural Gas (or Propane with field conversion)

Standard Features

• Factory Instaled Modulating Pump
• Outdoor Reset Control System with Sensor
• Priority DHW Standard
• Built-in DHW Plate Heat Exchanger
• Modulating Ceramic Burner
• Stainless Steel Water Tube Condensing Heat Exchanger • Direct Vent Sealed Combustion
• Approved for Room and Closet Installations

• Condensing Gas Boiler with Integrated Modulating Pump • Liquid Propane Field Conversion Kit
• Wall Mounting Bracket
• Pressure Relief Valve

• Condensate Collector Kit
• Outdoor Reset Sensor
• Vent Top with Integrated 3 in. (80 mm) PP Adapters
• 3 in. (80 mm) PP to 3″ PVC Adapter (Qty 2)
• 3in.PVCto2in.PVCor2in.(60mm)PPAdapter(Qty2) • 3 in. X 5 in. Concentric Vent Adapter
• NPT Adapters:

  • −  1 in. for CH Systems (Qty 2)
  • −  3/4 in. (Qty 3 total)

    ▪ (Qty 2) for DHW Systems

    ▪ (Qty 1) for Gas Supply Connection
    • Documentation: Installation and Operation Manual, User

    Manual, and ISCL (Installation, Service, and Commissioning Log)

    Optional Accessories

    Closely Spaced Tee/Manifold Kit, Flue Gas Temperature Sensor, Condensate Neutralizer, ScaleCutter, ScaleCutter Refill Cartridge, Boiler Toolkit, and Isolation Valve Kit

100 years of smart comfort

For nearly a century, Rinnai has been fiercely committed to delivering a smarter kind of comfort. With headquarters in Japan and a network of 20 subsidiaries and 86 sales offices in 13 countries, this commitment has made us one of the world’s largest gas appliance manufacturers. Our value-added products continue to stay in step with the demands of a changing world.