Rinnai M090CN
Rinnai M090CN
Rinnai M090CN
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Rinnai M090CN
Rinnai M090CN

Rinnai - 84K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent



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Rinnai - 84K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Rinnai - 84K BTU - 95.0% AFUE - Combi Gas Boiler - Direct Vent
Model: M090CN
How-To Articles


    Rinnai M-Series combi boilers were designed with momentum in mind, focusing on key elements to allow for simple installation, operational performance and serviceability. Combining Rinnai's condensing boiler technology with an on-demand water heater, the M-Series combi boiler provides high efficiency home heating in a compact, efficient package. With a stainless steel heat exchanger, factory installed circulation pump and turbo fan, these boilers produce powerful and efficient heat without having to break the bank. Its lightweight and compact design, paired with an included mounting bracket, makes the Rinnai M-Series a quick and effective solution to your home heating needs.
  • High Efficiency Home Heating and Hot Water
  • Rinnai M-Series boilers boast an impressive 95.0% AFUE efficiency rating. A stainless steel heat exchanger promotes efficient heat transfer while the domestic hot water flow sensor helps modulate the boilers for increased performance.
  • Simple Installation
  • Its compact size and included mounting bracket allow the M-Series boiler to be installed easily and quickly. Flexible venting options and simplified setup parameters mean you'll have the boiler up and running in no time.
  • Easy-To-Use Interface
  • M-Series boilers feature a large display with a simple control interface. Simplified parameters and menu navigation allows for quick adjustments and service without the headache.
  • Product Includes
  • Liquid Propane Field Conversion Kit
  • Wall Mounting Bracket
  • Pressure Relief Valve
  • Condensate Collector Kit
  • Outdoor Reset Sensor
  • Vent Top with Integrated 3" PP Adapters
  • 3" PP to 3" PVC Adapter (Qty. 2)
  • 3" PVC to 2" PVC or PP Adapter (Qty. 2)
  • 3" x 5" Concentric Vent Adapter
  • NPT Adapters: 1" Supply/Return (Qty. 2), 3/4" Gas Supply (Qty. 1) and 3/4" DHW Adapters (Qty. 2)
California residents see
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm..
For more information go to: www.p65Warnings.ca.gov


specs product image PID-94395
General Information
Product Line
M Series
Medium Learn More
Hot Water
Fuel Type Learn More
Natural Gas
Combustion Type Learn More
Vent Type Learn More
Direct Vent
DHW Production Learn More
Modulating/Staging Learn More
Connection Type
Mount Type
Minimum Altitude
0 Feet
Maximum Altitude
10000 Feet
Includes Pump
Assembly Type
Gas Conversion Kit
AFUE Learn More
95 %
Maximum Input Capacity Learn More
90000 BTU
Minimum Input Capacity
17000 BTU
DOE Heating Capacity Learn More
84000 BTU
Net I=B=R Capacity Learn More
73000 BTU
Ultra Low NOx Emissions Learn More
Low NOx Emissions Learn More
Turndown Ratio
Electrical Data
120 Volts
60 Hz
Flue Connection Size
3 Inches
Gas Connection Size
3/4 Inch
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
28 Inches
Product Width
17 Inches
Product Depth
10 Inches
Product Weight
77 Pounds
Shipping Weight
87 Pounds
Energy Star Listed
CSA Listed
AHRI Certified
AHRI Reference Number
Warranty Information
Parts Warranty Learn More
2 Years
Heat Exchanger Warranty
12 Years


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Required Accessories 9
These accessories are required to properly setup/install this product.
Optional Accessories 10

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