Rinnai CX199iN 11.0 GPM Sensei CX Series Commercial Condensing Tankless Hot Water Heater

The New Rinnai Commercial CX199 is a super high efficiency, Commercial Energy Star Certified, tankless hot water heater. One of the many new features on the new Sensei CX Series is its versatility in installation applications. Although the unit itself ships standard from the factory configured to Natural Gas and indoor installation, it features Smart Sense, Rinnai's proprietary Adaptive Gas Valve Technology. This technology allows the unit to adjust from Natural Gas to Liquid Propane.*  Additionally, with the addition of an Outdoor Vent Cap (RXOVC, sold separately), is required before your unit can be installed outdoors. A pipe cover is available to keep your pipes covered and make your installation look more complete. 

This commercial unit offers 98% UEF with a heat exchanger built for commercial demands. The CX199 is designed specifically for commercial use with precision engineering to give you an endless supply of hot water. Restaurants and hotels, as well as multi-family dwellings and schools are perfect applications for a commercial tankless water heater.

Cascade Logic and Cable Assembly is available for the CX199 tanks. With Cascade Cables used to connect up to 24 water heaters together, Cascade Logic rotates water heater operation to ensure the entire system gets equal usage and functions as a single hot water source. In a commercial installation where you may need to use more than one unit, Rinnai offers many Tankless Rack Systems for installation flexibility as well. The Tankless Rack system is available for wall mounted or freestanding installation for two or more units.

Indoor installation of the CX199 offers both concentric and PVC/CPVC venting. The dual venting option on the top of the unit allows for maximum installation flexibility - one concentric vent or two PVC/CPVC/PP pipes can be used for venting. With concentric venting, one pipe allows for fresh outside air in, while the other allows for exhaust to go out. Outdoor installation does not require venting. The CX199 complies with South Coast Air Quality Management District (SCAQMD) 14 Nanograms/Joule or 20 parts/million NOx.

The Rinnai CX Series with condensing technology offers built-in freeze protection with outside temperatures down to -22°F on the indoor units or -4°F for outdoor installations when protected from direct wind exposure. The unit features an integrated check valve located between the turbo fan and the combustion chamber to prevent cold air from entering the venting system and backflow of exhaust in common vent applications. The Fiber Mesh Premix Burner helps to provide even flame distribution for optimal performance for any demand. The MIVK-T-LW Isolation Valve is required for this unit. 

It features 199,000 BTUs and hot water delivery with a flow rate that ranges from 0.13 - 11.0 GPM. The minimum GPMs is perfect for low demand uses such as shaving, where warm water is needed but not at a high rate! The CX199 is a non-pump water heater. It will not recirculate. However, CX Tankless Water Heaters include Circ-Logic technology that offers the comfort and convenience of instant hot water with the use of an external recirculation pump. An recirculation conversion kit (RX2RXPCK, sold separately) is available and can be installed, internally, on your CX199 to convert your non-pump unit into a pump model for recirculation! Recirculation allows the water in the plumbing system to provide hot water more quickly once the tap is opened, using the cold water line for recirculation. Additional accessories such as a thermal bypass valve are required unless there is a dedicated return line installed in your home.

Simply download the Smart Connect App which allows you to connect your smart phone or table to your RX water heater via blue tooth, for easy, water heater set-up and registration. All of your initial water heater settings are confirmed/changed at this time. The CX199 is WiFi Ready. A WiFi module is required to control on-demand recirculation (the CX199 is not and requires RX2RXPCK, sold separately), remotely adjust temperatures as well as communicates with your service provider. (Remote diagnostics and monitoring requires a monitoring dealer.) With WiFi monitoring, only Rinnai Service Providers can monitor the efficiency of your tankless water heater as well as send you automatic maintenance alerts and possibly offer faster service. The WiFi Module attaches right to your Rinnai tankless water heater. Simply download the mobile app and you can control your hot water from anywhere in the home, as well as activate recirculation (if installed). It also allows for pairability and voice activation with Amazon Alexa.

There is a built-in controller located on the front panel. The default minimum temperature setting is 98° with a maximum of 140°F. The unit offers a maximum setting of 185°F with parameter adjustment. 

In a condensing tankless water heater, such as the CX199, once you turn on the tap, cold water goes into tankless heater and the flame is activated, heating up the two heat exchangers inside. Water is pre-heated as it passes through the secondary heat exchanger then continues to be heated as it passes through the primary, stainless steel heat exchanger. Once the water is heated, it is then mixed with cold water from the bypass valve before it exits the water heater at your set temperature. From there it goes into your pipes and up to the fixture calling for the hot water. Depending on the amount of hot water called for, the water heater adjusts the flame and bypass ratio accordingly to maintain your hot water for as long as it is needed. Once the water is shut off at the tap the water heater shuts down until it is needed again.