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Internet # 329105122

Model # CX199iN

Store SKU # 1011162245

Sensei 11.1 GPM Commerical 199,000 BTU Propane/Natural Gas Indoor/Outdoor Tankless Water Heater

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  • Unlimited hot water
  • Smart Sense gas valve adjusts to either natural gas or propane
  • Indoor or outdoor installation. Versa-Vent Cap needed for outdoor
  • View More Details
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Product Details

About This Product

The CX199iN is the next generation in commercial tankless water heating. Offering industry-leading thermal efficiency, this model was designed for the most intense applications - from restaurants and hotels to multifamily residenses. The SENSEI CX Series provides unlimited hot water leveraging a new, more compact combustion design that allow for easier installation and enhanced operational performance and serviceability.


  • One model converts from indoor to outdoor installation using Versa-Vent outdoor vent cap (sold separately)
  • Smart Sense Gas Valve Technology adjusts to either Natural Gas or Propane - no conversion kit required.
  • Professional installation recommended; please call 833-746-6210
  • Max Temperature 185°F
  • Smart Connect via Bluetooth to your device using your smartphone and the Rinnai Central App for Quick Setup and Registration
  • Smart Circ Intelligent Recirculation capable with installation of pump or pump accessory
  • Quick Flush - Simplified System Flushing
  • Industry leading 2" venting up to 75 feet
  • Recirculation: Field convertible with Internal Pump kit
  • Our efficient and compact technology helps conserve natural resources, including water- while reducing waste in landfills
  • Thermal Efficiency 97%
  • Energy Star
  • Shop more from the Rinnai Sensei Collection
  • Shop all Rinnai Tankless Water Heaters
  • Click here for more information on Electronic Recycling Programs
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 329105122

Model # CX199iN

Store SKU # 1011162245


Dimensions: H 30.11 in, W 18.5 in, D 11.4 in


Product Depth (in.)

11.4 in

Product Height (in.)

30.11 in

Product Width (in.)

18.5 in

Vent diameter (in.)

2 in

Water Connection Size (in.)

3/4 in


Application Type


BTU Rating


Efficiency Level

Super High

Finish Family


First Hour of Delivery (gallons/hr)


Flow Rate @ 35°F Rise (gallons/min)

11.1 gal (US)/min

Flow Rate @ 45° Rise (gallons/min)

8.6 gal (US)/min

Flow Rate @ 55° Rise (gallons/min)

7.1 gal (US)/min

Flow Rate @ 65° Rise (gallons/min)

6 gal (US)/min

Fuel Type


Gas Connection Size

3/4 in

Gas Type

Natural Gas, Propane

Heat Exchanger Warranty

8 Year


Indoor, Outdoor

Maximum Temperature (F)

185 F

Minimum Activation Rate (gpm)


Minimum Temperature (F)

98 F

Pack Size


Product Weight (lb.)

55 lb

Required Volt Connection

120 volt



Total BTU (Btu)

199000 Btu

Uniform Energy Factor


Vent Type


Water Connection Location


Water Heater Features

Digital Display, Energy Usage Tracking, Freeze Protection, Overheat Protection, Temperature Pressure Relief Valve, Wall Mounted

Warranty / Certifications

Certifications and Listings

AHRI Certified, CSA Certified, Energy Star

Labor Warranty

1 Year

Part Warranty

5 Year

Questions & Answers

Q:Is there a maintenance procedure for cleaning it? I have a resort where some will be mounted outdoors. In the next artic freeze in Arkansas, can I drain and blowout the water if it is not going to be in use for those few weeks to prevent damage?
by|Jun 6, 2024
1 Answer
Answer This Question

A:  Hi QuestionMan, yes we have a maintenance procedure for flushing the unit that can be found in the manual or we have a video housed on Youtube that will show you the process. You can also talk to your installer about a drain down kit. The 104000059 kit is a freeze protection drain down kit for your Rinnai Tankless Water Heaters. It is for outdoor use in cold regions. When there is a power failure the valves with shut off the cold water and drain your tankless water heater to help protect the heat exchange, because freeze damage would not fall under our warranty.

by|Jun 12, 2024
    Q:Does it have an built in circulating pump?
    by|Jun 4, 2024
    1 Answer
    Answer This Question

    A:  Hi, this particular unit does not have a pump built in.

    by|Jun 6, 2024
      Q:Is there any reason this should not be used for residential?
      by|May 25, 2024
      1 Answer
      Answer This Question

      A:  Hi Darren, this unit can be used in a residential location, however it is designed for higher demand environments and the warranty is drastically reduced due to the nature of those environments.

      by|Jun 10, 2024
        1 found this answer helpful
        Q:HI. Now I have a gas 75,000BTU water heater in restaurant. Health department required as hot water heater work sheet by 115,830 BTU. Do you think this item can meet health department requirements ?
        by|May 17, 2024
        1 Answer
        Answer This Question

        A:  Hi Gwoo, this unit has a 199,000 BTU rating and can reach high temperature ranges, I think it will meet those requirements. However, there are some specifications sheets that can be found on our rinnai.us site that should assist.

        by|Jul 1, 2024
          1 found this answer helpful
          Showing 1-4 of 7

          Customer Reviews

          4.4 out of 5

          • 4.4 out of 8 reviews
          • 100% recommend this product
          Filter by:
          Showing 1-8 of 8 reviews
          We have turned the unit up to 140 (the maximum) and the water is warm not hot??
          Response from Rinnai Product ExpertJul 9, 2024
          Hi Art, we are sorry to hear you are experiencing an issue. If you have adjusted the unit to the max temp and it still in not getting hot, there could be something else going on with the unit. Please utilize our find a pro option at rinnai.us to locate a licensed provider in your area to troubleshoot your issue, or work with your initial installer. RinnaiAmerica
          • Verified Purchase
          • Verified Purchase
          Easy to install and setup
          • Verified Purchase
          We like the idea that it is on the outside of the house, we have had it for 3 weeks & we are looking for longevity, if that happens, it meets our expectations.
          • Verified Purchase
          Adequate, but poor customer service
          Pro: Product itself seems adequate enough. Produce hot water instantly. The heater looks great and durable. Con: More expensive than Rheem, price for installation is also crazy ($6K++). Rude customer service. Bottomline: The product works, but still not sure if the pros are worth it.
            • Recommended
            Fantastic water heater !
            • Verified Purchase
            • Verified Purchase
            Bigger than expected is a beast! Works great
            • Verified Purchase
            Showing 1-8 of 8 reviews

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