Rinnai RUR98 Review

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Benefits and advantages of Rinnai RUR98 tankless water heaters. Explore the most advanced features and specs including the Circ-Logic system, condensing technology, ultra high energy efficiency, ultra low NOx emission...


Rinnai RUR98 is part of the Ultra series of tankless and condensing water heaters that are designed for ultra efficient, on demand water heating with the endless supply of hot water and great reduction of greenhouse gases. The RUR98 models are meant for domestic hot water applications only and are not allowed for installations in hydronic heating applications.

With its sleek and modern metallic look RUR98 models are perfect for indoor installations and very attractive for the customers, and due to its high quality casings can last long, even when installed outdoor.

Highlights

Rinnai RUR98 features

Power

Rinnai RUR98Rinnai RUR98 tankless water heaters come with the eco-friendly and modulating gas burner which allows an operation in the range from 15,200 Btu to 199,000 Btu.

It is providing up to 9.8 GPM of hot water - making it ideal for up to four bath homes and heating up to the maximum temperature of 140 F, in both residential and commercial applications.

Recirculation

Water heaters are equipped with the thermal bypass technology so by using the built-in circulation pump, bypass line and valve it is now possible to have hot water delivered faster without using the dedicated recirculation line.

Rinnai Circ-Logic technology is what will reduce the number of user complains for the long wait time, making it more convenient with an increased comfort and efficiency, while reducing the energy loss. This option makes the RUR series easy to adapt to an existing plumbing system with or without dedicated recirculation line.

Electronics

An advanced electronics allows easy and convenient troubleshooting, as the water heaters come with the installed 24-Hour digital controller that is also programmable.

Venting

Indoor model RUR98i is the direct vent model that can use concentric or twin-pipe vents to remove the products of combustion out, with the horizontal and vertical termination. The vent pipe can be made of the PP, PVC or CPVC material. The outdoor model is ventless, no venting pipe is needed as there is a venting slot located at the front of the unit that is used for the exhaust. This is what makes Rinnai RUR98 models unique - both concentric and PVC/CPVC venting options are found on the same indoor model, resulting in the greater flexibility and faster installation.

Easy maintenance

Isolation valves are included with the RUR98 series and are recommended for the installation making the maintenance and service easier, such as flushing.

Size

The small size of 18.5"x26"x10" and weight of approx. 73 lbs makes them, as other tankless units from this manufacturer, easy to handle and install on the wall.

Safety elements

  • Flame rod - flame failure

  • Combustion fan rpm check

  • Boiling protection

  • Over current glass fuse

  • Thermal fuse

  • Automatic frost protection

  • Remaining flame - OHS

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Specifications

  • Maximum of 12-year limited warranty on the heat exchanger

  • Wi-Fi ready

  • High altitude operation - up to 10,200 ft

  • Vent length up to 65 feet concentric type and up to 100 feet for 4" twin pipe PVC/CPVC

  • Gas line 3/4" and 1/2" gas line compatible

  • Water lines 3/4"
  • Hot water flow: 0.26-9.8 GPM

  • Temperature: 98-140 F

  • Energy factor 0.95

  • Dimensions: 18.5" x 26" x 10"

  • Weight: 72.8 pounds

Warranty

Warranty is 12 years on heat exchangers and when used in residential applications or 5 years for the commercial use; 5 years on parts.

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Pictures - courtesy of Rinnai WH company

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