Manuals+

Rinnai: Delivering an Endless Supply of Hot Water

A Comprehensive Array Of Models

Why Rinnai? A Tradition of True Reliability.

For nearly 100 years, Rinnai has been committed to delivering superior experiences. Through teamwork, technology, and innovation, Rinnai has become one of the world's largest gas appliance manufacturers, specializing in high-efficiency residential and commercial tankless water heaters and home heating solutions. With headquarters in Japan and a global network, Rinnai's presence and influence are significant.

Rinnai employs over 600 research and development engineers, focusing on quality in design and manufacturing. Advanced automation, precision assembly, and extensive testing protocols ensure every product meets high standards. Rinnai factories are ISO 9001 and/or ISO 14001 certified.

Established in 1974, Rinnai's U.S. and Canadian operations have expanded significantly. The Peachtree City, Georgia facility serves as a state-of-the-art distribution, research, and training center. Rinnai America operates its own CSA Certified Testing Laboratory, ensuring all products meet rigorous standards.

Rinnai's commitment to reliability is built into every product, resulting in some of the world's most efficient and longest-lasting tankless water heaters and home heating solutions.

A Track Record of Performance

Rinnai America continues its tradition of creating solutions that enhance living. Superior design and engineering in Rinnai's residential and commercial water heating and home heating solutions consistently raise the standard for comfort, convenience, and reliability. Rinnai Tankless Water Heaters are the #1 selling tankless water heating brand in the U.S. and Canada.

Rinnai people stand behind their products, offering 24/7 technical support and a national network of independent installers. On-staff engineers assist with product selection and sizing, ensuring customer confidence.

Enhancing Your Comfort Everywhere

Rinnai water heating and heating products are designed for a smarter kind of comfort. Their precisely engineered tankless water heaters provide an endless supply of hot water, ideal for multiple simultaneous uses. They feature space-saving designs and ultra-efficient performance for energy savings.

Rinnai Tankless Water Heaters are popular for commercial applications, including restaurants, hotels, schools, and multifamily residences, offering reliable performance, energy savings, and reduced operating costs.

The RH180 Hybrid Tank-Tankless Water Heater combines on-demand tankless technology with an efficient storage tank for more hot water and quicker recovery than traditional tank water heaters, offering easy installation.

Rinnai's heating products, such as Condensing Boilers and Vent-Free Fan Convectors, provide efficient, cost-effective heat and whole-house comfort.

Enduring Quality, Lasting Peace of Mind

With 100 years of engineering, innovation, and quality, Rinnai products are built to stand the test of time, providing peace of mind.

Enhancing the Comforts of Home

Rinnai Tankless Water Heaters and the RH180 Hybrid Tank-Tankless Water Heater provide homeowners with more hot water than ever thought possible. The on-demand technology ensures an endless supply of hot water for any need, eliminating the need to schedule activities around hot water availability.

Rinnai Tankless Water Heaters can reduce energy consumption by up to 40% compared to traditional systems, leading to lower utility costs and contributing to favorable HERS ratings and LEED certification.

These units feature copper heat exchangers for unparalleled quality, durability, and safety, along with compact designs that save space.

The RH180 Hybrid Tank-Tankless Water Heater offers the benefits of tankless technology with a storage tank for enhanced hot water delivery and quicker recovery. Professionals appreciate the time and labor savings from its quick and easy installation.

Rinnai products offer flexibility, convenience, and the reliability of proven engineering, ensuring homeowner comfort.

Commercial Solutions – Where the Demands are Greatest, Rinnai Delivers.

Leveraging decades of global commercial water heating experience, Rinnai Tankless Water Heaters deliver performance and reliability. Precision engineering and commercial-grade features provide an endless supply of hot water for demanding applications, conserving energy and saving costs.

Rinnai's commitment to safety, quality, and support has made it the #1 selling tankless brand in the U.S. and Canada.

For a free sizing consultation, contact Rinnai Application Engineers at 800-621-9419.

Rinnai Tankless Solutions Give You

Tankless technology that saves you time.

Innovative technology provides an endless supply of hot water whenever and wherever it's needed, even for simultaneous uses at multiple fixtures. Prioritizing activities and scheduling hot water use is a thing of the past.

Save money, splurge on performance.

Designed for efficiency: Rinnai's tankless technology features copper heat exchangers for maximum efficiency, using up to 40% less energy than traditional tanks.

Save energy: Operating only when hot water is needed and without a storage tank to heat and reheat water, Rinnai's tankless technology saves on energy and utility costs. Electronic ignition eliminates the need for a standing pilot light.

A smart investment: Increase home value with premium technology, improved energy efficiency, a better HERS Index Score, and optimized LEED certification. Rebates and tax credits may be available.

Multiple sizes: Rinnai offers options to right-size installations and customize efficiency.

Replace parts, not systems: Every part of a Rinnai Tankless Water Heater is replaceable, allowing for easy component exchange instead of replacing the entire system.

Save space with a compact design.

Maximum output, minimum space: Wall-mounted models can be installed on interior or exterior walls and in compact spaces, freeing up valuable space.

Flexible installation: Small size allows installation in non-traditional spaces like crawl spaces and attics, making them suitable for any home size.

Stay green with a sustainable choice.

Earth-friendly efficiency: Tankless technology achieves maximum energy efficiency, conserving natural resources.

Less waste: Compact heat exchanger design, longer product lifespan, and recyclable parts minimize landfill waste.

High standards for low emissions: Lower CO2 emissions contribute to cleaner air and a healthier environment.

Condensing Technology: Ultra Series

Delivering the most energy-efficient performance, the Ultra Series features a condensing design with two heat exchangers to maximize heating value, enhance reliability and durability, and reduce maintenance.

Unique Features of Ultra Series:

Non-Condensing Technology: Luxury Series

The Luxury Series offers award-winning performance with a sleek, modern design and features that satisfy the demands of larger homes and light commercial applications.

Unique Features of Luxury Series:

Value Series: Confidence Meets Affordability

These easy-to-install, compact models combine Rinnai reliability with performance ideal for medium- to smaller-sized new homes or remodels.

Unique Features of Value Series:

How a Rinnai Tankless Water Heater Works

When a hot water fixture is turned on, cold water enters the heater and is signaled to activate the flame igniter. A combustion fan ignites the flame, and water is heated as it passes through the copper heat exchanger. For Condensing models, a secondary heat exchanger preheats the water.

The gas valve and blower automatically adjust incoming gas and oxygen to meet demand, maintaining the set temperature. A digital controller allows users to select the desired temperature.

When the fixture is turned off, cold water stops entering, and the flame diminishes. The combustion fan continues briefly to exhaust any leftover gases.

Heater Operation: Tank vs. Tankless Annual Operating Costs

Water Heater Technology Fuel Type/Energy Source EF (Energy Factor) Annual Operating Costs*
Standard 50-Gallon Gas Storage Tank Natural Gas 0.60 $273
Standard 50-Gallon Gas Storage Tank Propane 0.60 $646
Standard 50-Gallon Electric Storage Tank Electricity 0.95 $557
Mid-Efficiency Non-Condensing Tankless Natural Gas 0.82 $200
Mid-Efficiency Non-Condensing Tankless Propane 0.82 $473
High Efficiency Condensing Tankless Natural Gas 0.96 $171
High Efficiency Condensing Tankless Propane 0.96 $404

*Based on national averages per Department of Energy, U.S. Energy Information Administration.

Condensing Tankless: Rinnai Ultra Series - RUR Model

Rinnai's Ultra Series Tankless Water Heater RUR Models offer faster hot water with integrated recirculation technology. This system includes a recirculation pump, internal bypass line, and thermal bypass valve, along with a 24-Hour Digital Controller (MC-195T) for comprehensive hot water availability.

Recirculation saves water and money, conserves natural resources, and reduces utility costs. The 24-hour digital controller allows for programmable recirculation events to align with usage patterns, ensuring hot water is available when needed.

The RUR models offer flexible venting options, including Concentric and PVC/CPVC, providing ultimate flexibility for installers.

Rinnai's smart recirculation technology offers faster hot water and significant water and gas savings.

Technology

Rinnai introduces the first tankless water heater with both concentric and PVC/CPVC venting and integrated recirculation on the same model.

Key Components:

Rinnai Tankless Water Heaters deliver trusted quality and proven reliability, offering efficient, durable products and experienced support.

The Rinnai Ultra Series Tankless Water Heater: Saving Time, Water and

Recirculation in action...

Dedicated Return Line

Rinnai's RUR model is adaptable to plumbing systems with or without a dedicated recirculation return line. In Dedicated Recirculation Line mode, the integrated pump circulates water from the heater through the hot water supply line and back via the return line. A temperature thermistor controls the pump's on/off sequence.

With a dedicated return line, RUR offers additional control through Rinnai's time and temperature-based Comfort or Economy modes. These modes adjust pump on/off intervals for optimized energy savings.

The MC-195T 24-Hour Digital Controller allows users to adjust timing and duration for maximum energy savings, with Rinnai Circ-Logic technology operating the pump during active circulation periods.

RUR Models: Money with Smart Recirculation.

How the RUR Works.

Crossover Valve

For applications without a dedicated recirculation line, the RUR utilizes the Crossover mode. The integrated recirculation pump, internal bypass line, and thermal bypass valve make this possible. The valve is installed on the furthest fixture's hot and cold supply lines, using the cold water line as the temporary return.

In Crossover mode, the pump circulates water through the hot water supply line, thermal bypass valve, and back via the cold water line. When hot water is detected, the flow through the thermal bypass valve reduces to a trickle. The pump continues to operate until the time interval ends.

Comfort and Economy modes offer time-based control for the pump's on/off intervals, providing additional energy and cost savings.

Regardless of the recirculation method, hot water is always available as it circulates from the hot water line back to the Rinnai RUR Tankless Water Heater.

Other Recirculation Solutions

Rinnai recirculation solutions enhance the endless supply of hot water from Rinnai Tankless Water Heaters, adding the convenience of faster hot water. Rinnai Circ-Logic technology is standard on Ultra and Luxury models and can be used with accessories to set recirculation patterns that align with hot water usage patterns.

The Rinnai RH180 Hybrid Tank-Tankless Water Heater

Enjoy hot water at the pace of your life. The Rinnai RH180 Hybrid Tank-Tankless Water Heater replenishes its hot water supply quickly, offering more hot water for daily needs. It simplifies life by allowing users to plan activities around hot water availability, not the other way around.

The RH180 installs like a traditional tank-style water heater, using a 1/2" gas line, standard water connections, and 4" B-Vent, or can be common vented with a furnace. It's an ideal upgrade for increased hot water capacity without reconfiguring the setup.

Water Heating Solutions - Clear Differences

Fixtures/Appliances In Use Available Hot Water Replenish Entire Hot Water Supply Ease of Installation
1 21 MIN 88 MIN STANDARD CONNECTION
ELECTRIC TANK WATER HEATER
1 18 MIN 36 MIN STANDARD CONNECTION
GAS TANK WATER HEATER
1 CONTINUOUS 16 MIN STANDARD CONNECTION
RINNAI RH180 HYBRID TANK-TANKLESS WATER HEATER
NUMEROUS CONTINUOUS INSTANT SOME RETROFIT
RINNAI TANKLESS WATER HEATER

Based on 50° F inlet supply water temperature, 40-gallon standard tank, single shower use (assumed to be 2.5 gpm mixed flow rate). Mixed temperature at showerheads to be 105° F. Appliance set point to be 120° F. Available hot water and replenished hot water supply based on industry calculation methods and Rinnai lab testing. Based on internal Rinnai testing, results may vary based on application.

Heater DELIVERS MORE OF WHAT YOU WANT.

The Rinnai RH180 Hybrid Tank-Tankless Water Heater uniquely blends advanced technology and simple supply, pairing an on-demand tankless system with a 40-gallon storage tank for a large capacity of hot water and technology to maintain and quickly replenish the supply.

Here are the basics:

  1. When a hot water fixture is turned on, heated water exits from the top of the tank. Cold water enters the system and is directed toward the bottom of the tank.
  2. The system activates a pump that draws cooler water from the bottom of the tank up through the heating components of the tankless model.
  3. The heated water exits the tankless model and is directed toward the top of the tank.
  4. As long as the fixture is on and cold water is directed to the bottom, the tankless technology continually replenishes the system with hot water.
  5. When the fixture is turned off, cold water stops entering, but the tankless model continues replenishing hot water until the selected set temperature is satisfied.

Standard Hookups Make Installation Quick and Easy.

*As with all gas appliance applications, installers should check and abide by local gas-pipe size and national fuel gas codes.

Condensing Tankless Water Heaters: Ultra Series

Model Dimensions - w, h, d Inches (mm) Weight (lbs / kg) Installation Type Min./Max. BTU (natural gas) Min./Max. BTU (propane) Energy Factor Temp. Range Residential Temp. Range Commercial Min. Activation Rate Flow Rate (70°/50° Temp. Rise) Hot Water Flow Rate Range Controller (standard) Controllers (optional) Ultra Low NOx Warranty (Residential)* Warranty (Commercial)* Mobile Home Certified Valves Shipped in Box High Altitude Approved Certifications Venting Options Tankless Rack System (TRS/TRW) Compatible 1/2" Gas Line Compatible***
RUR98i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 72.8/33 Indoor 15,200/199,000 15,200/199,000 0.95 98°-140°F / 37°-60° C 98°-140°F / 37°-60° C 0.4 gpm (1.5 lpm) 5.5/7.7 (20.8/29.2) 0.26-9.8 gpm (0.98-37.1 Ipm) MC-195T-US MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC / CPVC no yes
RUR98e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 72.8/33 Outdoor 15,200/199,000 15,200/199,000 0.95 98°-140°F / 37°-60° C 98°-140°F / 37°-60° C 0.4 gpm (1.5 lpm) 5.5/7.7 (20.8/29.2) 0.26-9.8 gpm (0.98-37.1 Ipm) MC-195T-US MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC / CPVC no yes
RUC98i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Indoor 15,200/199,000 15,200/199,000 0.95 98°-140°F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 5.5/7.7 (20.8/29.2) 0.26-9.8 gpm (0.98-37.1 Ipm) MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC yes yes
RUC90i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Indoor 15,200/180,000 15,200/180,000 0.96 98°-140° F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 5.0/7.0 (18.9/26.5) 0.26-9.0 gpm (0.98-34.1 Ipm) MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC / CPVC yes yes
RUC80i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Indoor 15,200/152,000 15,200/152,000 0.96 98°-140° F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9/22.3) 0.26-8.0 gpm (0.98-30.3 Ipm) MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC / CPVC no yes
RU80e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Outdoor 15,200/152,000 15,200/152,000 0.96 98°-140° F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9/22.3) 0.26-8.0 gpm (0.98-30.3 Ipm) MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC / CPVC no yes
RUCS75i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Indoor 10,300/160,000 10,300/160,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9 / 22.3) 0.26-7.5 gpm (0.98-28.4 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® N/A yes yes
RUS75e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Outdoor 10,300/160,000 10,300/160,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9 / 22.3) 0.26-7.5 gpm (0.98-28.4 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes
RUCS65i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Indoor 10,300/130,000 10,300/130,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 3.4/4.8 (12.9/18.1) 0.26-6.5 gpm (0.98-24.6 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® N/A yes yes
RUS65e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Outdoor 10,300/130,000 10,300/130,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 3.4/4.8 (12.9/18.1) 0.26-6.5 gpm (0.98-24.6 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes

Model Chart and Specifications.

RU Models

Model Dimensions - w, h, d Inches (mm) Weight (lbs / kg) Installation Type Min./Max. BTU (natural gas) Min./Max. BTU (propane) Energy Factor Temp. Range Residential Temp. Range Commercial Min. Activation Rate Flow Rate (70°/50° Temp. Rise) Hot Water Flow Rate Range Controller (standard) Controllers (optional) Ultra Low NOx Warranty (Residential)* Warranty (Commercial)* Mobile Home Certified Valves Shipped in Box High Altitude Approved Certifications Venting Options TRS Compatible 1/2" Gas Line Compatible***
RU98e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Outdoor 15,200/199,000 15,200/199,000 0.95 98°-140°F/ 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 5.5/7.7 (20.8/29.2) 0.26-9.8 gpm (0.98-37.1 Ipm) MC-91-2US MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes
RU90e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Outdoor 15,200/180,000 15,200/180,000 0.96 98°-140° F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 5.0/7.0 (18.9/26.5) 0.26-9.0 gpm (0.98-34.1 Ipm) MC-91-2US MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes
RU80e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 61.7/28.0 Outdoor 15,200/152,000 15,200/152,000 0.96 98°-140°F / 37°-60° C 98°-185° F / 37°-85° C** 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9 / 22.3) 0.26-8.0 gpm (0.98-30.3 Ipm) MC-91-2US MC-195T-US, MC-100V-1US, BC-100V-1US, MCC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes

RUCS / RUS Models

Model Dimensions - w, h, d Inches (mm) Weight (lbs / kg) Installation Type Min./Max. BTU (natural gas) Min./Max. BTU (propane) Energy Factor Temp. Range Residential Temp. Range Commercial Min. Activation Rate Flow Rate (70°/50° Temp. Rise) Hot Water Flow Rate Range Controller (standard) Controllers (optional) Ultra Low NOx Warranty (Residential)* Warranty (Commercial)* Mobile Home Certified Valves Shipped in Box High Altitude Approved Certifications Venting Options TRS Compatible 1/2" Gas Line Compatible***
RUCS75i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Indoor 10,300/160,000 10,300/160,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9 / 22.3) 0.26-7.5 gpm (0.98-28.4 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® N/A yes yes
RUS75e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Outdoor 10,300/160,000 10,300/160,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 4.2/5.9 (15.9 / 22.3) 0.26-7.5 gpm (0.98-28.4 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes
RUCS65i 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Indoor 10,300/130,000 10,300/130,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 3.4/4.8 (12.9/18.1) 0.26-6.5 gpm (0.98-24.6 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® N/A yes yes
RUS65e 18.5 X 26 X 10 (469.9 X 660.4 X 254) 57.3/26 Outdoor 10,300/130,000 10,300/130,000 0.93 120°-140°F / 49°-60° C Residential Only 0.4 gpm (1.5 lpm) 3.4/4.8 (12.9/18.1) 0.26-6.5 gpm (0.98-24.6 lpm) Status Monitor MC-91-2US yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI, CSA, ENERGY STAR® Concentric or PVC/CPVC no yes

Non-Condensing & RH180 Hybrid Tank - Tankless Water Heaters: Luxury Series

Model Dimensions - w, h, d Inches (mm) Weight (lbs / kg) Installation Type Min./Max. BTU (natural gas) Min./Max. BTU (propane) Energy Factor Temp. Range Residential Temp. Range Commercial Min. Activation Rate Flow Rate (70°/50° Temp. Rise) Hot Water Flow Rate Range Controller (standard) Controllers (optional) Ultra Low NOx Warranty (Residential)* Warranty (Commercial)* Mobile Home Certified Valves Shipped in Box High Altitude Approved Certifications Venting Options TRS Compatible 1/2" Gas Line Compatible***
RL94i 14 x 23 x 9 (355.6 x 584.2 x 228.6) 46.3/21.0 Indoor 10,300/199,000 10,300/199,000 0.82 98°-140° F (37°-60° C) 98°-185° F (37°-85° C)** 0.4 gpm (1.5 lpm) 4.7/6.6 (17.8/29.2) 0.26-9.8 gpm (0.98-37.1 Ipm) MC-91-2US MC-100-1, BC-100V-1, MC-195T-US, MCC-91-2 no Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
RLX94i 14 x 23 x 9 (355.6 x 584.2 x 228.6) 46.3/21.0 Indoor 10,300/192,000 N/A 0.82 98°-140° F (37°-60° C) 98°-185° F (37°-85° C)** 0.4 gpm (1.5 lpm) 4.5/6.4 (17.03/24.2 0.26-9.8 gpm (0.98-37.1 Ipm) MC-91-2US MC-100-1, BC-100V-1, MC-195T-US, MCC-91-2 yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
RL94e 14 x 23 x 9 (355.6 x 584.2 x 228.6) 44.3/20.1 Outdoor 10,300/199,000 10,300/199,000 0.82 98°-140° F (37°-60° C) 98°-185° F (37°-85° C)** 0.4 gpm (1.5 lpm) 4.7/6.6 (17.8/29.2) 0.26-9.8 gpm (0.98-37.1 lpm) MC-91-2US MC-100-1, BC-100V-1, MC-195T-US, MCC-91-2 yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA N/A no yes
RL75i 14 x 23 x 9 (355.6 x 584.2 x 228.6) 45.6/20.7 Indoor 10,300/180,000 10,300/180,000 0.82 98°-140° F (37°-60° C) 98°-160° F (37°-71° C)** 0.4 gpm (1.5 lpm) 4.3/6.0 (16.3/22.7) 0.26-7.5 gpm (0.98-28.4 Ipm) MC-91-2US MC-100-1, BC-100V-1, MC-195T-US, MCC-91-2 yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
RL75e 14 x 23 x 9 (355.6 x 584.2 x 228.6) 43.7/19.8 Outdoor 10,300/180,000 10,300/180,000 0.82 98°-140° F (37°-60° C) 98°-160° F (37°-71° C)** 0.4 gpm (1.5 lpm) 4.3/6.0 (16.3/22.7) 0.26-7.5 gpm (0.98-28.4 Ipm) MC-91-2US MC-100-1, BC-100V-1, MC-195T-US, MCC-91-2 yes Limited 12-year on heat exchanger, 5-year on parts, 1-year on labor (5-year optional on labor) Limited 5-year on heat exchanger, 5-year on parts, 1-year on labor (2-year optional on labor) yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA N/A no yes

Value Series Heaters Model Chart and Specifications.

Model Dimensions - w, h, d Inches (mm) Weight (lbs / kg) Installation Type Min./Max. BTU (natural gas) Min./Max. BTU (propane) Energy Factor Temp. Range Residential Temp. Range Commercial Min. Activation Rate Flow Rate (70°/50° Temp. Rise) Hot Water Flow Rate Range Controller (standard) Controllers (optional) Ultra Low NOx Warranty (Residential)* Warranty (Commercial)* Mobile Home Certified Valves Shipped in Box High Altitude Approved Certifications Venting Options TRS Compatible 1/2" Gas Line Compatible***
V75i 14 x 23 x 9 (355.6 x 584.2 x 228.6) 45.6/20.7 Indoor 10,300/180,000 10,300/180,000 0.82 98°-140° F (37°-60° C) Residential Only 0.4 gpm (1.5 lpm) 4.3/6.0 gpm (16.3/22.7 lpm) 0.26-7.5 gpm (0.98-28.4 Ipm) MC-91-2US MC-100-1, BC-100V-1 yes Limited 10-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
V75e 14 x 23 x 9 (355.6 x 584.2 x 228.6) 43.6/19.8 Outdoor 10,300/180,000 10,300/180,000 0.82 98°-140° F (37°-60° C) Residential Only 0.4 gpm (1.5 lpm) 4.3/6.0 gpm (16.3/22.7 lpm) 0.26-7.5 gpm (0.98-28.4 Ipm) MC-91-2US MC-100-1, BC-100V-1 yes Limited 10-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
V65i 14 x 23 x 9 (355.6 x 584.2 x 228.6) 45.6/20.7 Indoor 10,300/150,000 10,300/150,000 0.82 98°-140° F (37°-60° C) Residential Only 0.4 gpm (1.5 lpm) 3.6/5.0 gpm (13.6/18.9 lpm) 0.26-6.5 gpm (0.98-24.6 lpm) MC-91-2US MC-100-1, BC-100V-1 yes Limited 10-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
V65e 14 x 23 x 9 (355.6 x 584.2 x 228.6) 43.9/19.8 Outdoor 10,300/150,000 10,300/150,000 0.82 98°-140° F (37°-60° C) Residential Only 0.4 gpm (1.5 lpm) 3.6/5.0 gpm (13.6/18.9 lpm) 0.26-6.5 gpm (0.98-24.6 lpm) MC-91-2US MC-100-1, BC-100V-1 yes Limited 10-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 10,200 ft. (3,109 m) AHRI and CSA Concentric no yes
V53e 14 x 21 x 7 (355.6 x 533.4 x 177.8) 34/15.4 Outdoor 10,300/150,000 10,300/150,000 0.82 98°-140° F (37°-60° C) Residential Only 0.4 gpm (1.5 lpm) 2.8/ 4.0 gpm (10.6/15.1 lpm) 0.60-5.3 gpm (0.98-20.1 lpm) Status Monitor MC-91-2US yes Limited 10-year on heat exchanger, 5-year on parts, 1-year on labor Residential Only yes yes Up to 5,400 ft. (1,646 m) AHRI and CSA 4" UL Listed B-Vent no yes

Flexible Tankless

Rinnai offers the new RUR and RUC models of the Ultra Series Tankless Water Heaters with Concentric Polypropylene or dual-pipe PVC/CPVC venting options on the same model. This dual venting configuration offers maximum flexibility for installers and dealers.

Rinnai favors Concentric Polypropylene for its superior joint fit, no cure time, quick installation, and reduced wall penetrations. However, Rinnai understands that PVC/CPVC may be more readily available or preferred in some installations.

Rinnai is the only tankless water heater manufacturer offering both Concentric and dual-pipe PVC/CPVC on the same model, providing more venting options out of the box for faster installations.

Dual Pipe Venting Options Available on RUR and RUC Tankless Water Heaters:

Dual Venting Options

Exhaust Adaptor Ring: For concentric venting, installers simply remove and discard the exhaust adaptor ring.

Intake Cap: For PVC/CPVC configurations, the intake cap is removed and discarded. Installers can use three- or four-inch PVC/CPVC pipe for the intake and exhaust.

VENT TYPE RUR / RUC NATURAL GAS RUR / RUC PROPANE RUCS VENT TYPE RUR / RUC NATURAL GAS RUR / RUC PROPANE RUCS
Concentric PP 65 Feet** (19.8 m) 41 Feet (12.5 m) 41 Feet (12.5 m) 3" Dual Pipe PVC/CPVC (76.2 mm) 65 Feet** (19.8 m) 41 Feet (12.5 m) 41 Feet (12.5 m)
Twin Pipe PP (Centrotherm) 41 Feet** (12.5 m) 41 Feet (12.5 m) 41 Feet (12.5 m) 4" Dual Pipe PVC/CPVC (10.16 m) 100 Feet** (30.5 m) 65 Feet (19.8 m) 100 Feet (30.5 m)

*Reference Rinnai Tankless Water Heater Installation and Operation Manual for further information.

**Maximum equivalent vent lengths are specific to the fuel type of the RUC and RUR tankless water heater. Use of elbows in installation will reduce the maximum vent length. It is imperative when performing equivalent vent length calculations, that you refer to the Installation Manual and any applicable technical bulletins.

Installation Options

Optimized Concentric Venting for Non-Condensing Tankless Water Heaters

Rinnai Tankless Water Heaters were the first to use a unique Concentric Venting System, a single-vent assembly option featuring an inner tube for exhaust and an outer tube for fresh air from outdoors. This direct-vent, sealed combustion system offers optimum safety and performance.

Beyond performance, the concentric system option offers faster and easier installation:

Rinnai Makes Your 1/2" Gas Line an Option, Not an Obstacle.

Rinnai Tankless Water Heaters are designed to provide maximum performance and operating efficiency using either a 3/4" or 1/2" gas line, as long as sufficient gas flow is available.

RINNAI TANKLESS WATER HEATER MODELS BTU GAS LINE 1/2" GAS LINE 3/4" MAXIMUM EQUIVALENT LENGTH
V53e 120,000 100' (30.4 m) 450' (137.2 m)
RUCS65i 130,000 70' (21.34 m) 350' (106.7m)
RUS65e 150,000 300' (91.44 m) 250' (76.2 m)
V65e
V65i 152,000 60' (18.29 m) 200' (60.96 m)
RUC80i
RU80e 160,000 50' (15.24 m) 175' (53.34 m)
RUCS75i
RUS75e 180,000 40' (12.19 m) 175' (53.34 m)
RL75i
RL75e 192,000
V75i
V75e 199,000
RUC90i
RU90e
RLX94i
RL94i
RL94e
RUR98i
RUR98e

Because an undersized gas line can stress a tankless system and potentially reduce its lifespan, Rinnai Tankless Water Heaters are equipped with innovative technology that safely ceases operation if it detects inadequate gas flow.

How To Properly Size Your Gas Line:

Venting Parts

Termination & Termination Kits

Non-Condensing (Luxury and Value Series)

Part Number Image Description Inner Exhaust Material Outer Intake Material
223181 1 Universal Horizontal Termination Kit 11.5" / 292.1 mm Aluminum Plastic
223188 1 Universal Termination Metal Kit 12" / 304.8 mm Aluminum Metal
223182 1 Universal Horizontal Termination Kit 21" / 533.4 mm Aluminum Plastic
223187 2 Horizontal Termination Diverter Kit 21" / 533.4 mm Aluminum Plastic
223183 3 Universal Horizontal Termination 11.5" / 292.1 mm Aluminum Plastic
223184 3 Universal Horizontal Termination 21" / 533.4 mm Aluminum Plastic
184118-5 4 Roof Discharge Termination (above roof) 18" / 457.2 mm Aluminum Plastic
184127 4 Roof Discharge Termination (above roof) 18" / 457.2 mm Aluminum Metal
184119 5 Roof Discharge Termination 38" / 965.2 mm Aluminum Plastic
224046 6 Raised Horizontal Termination Kit Aluminum Plastic
185342 Roof Termination Extension Kit Aluminum Plastic

Condensing (Ultra Series)

Part Number Image Description Inner Exhaust Material Outer Intake Material
223176PP 7 Condensing Horizontal Termination Kit 12" / 304.8 mm PP Plastic
223177PP 7 Condensing Horizontal Termination Kit 21" / 533.4 mm PP Plastic
223186PP 3 Condensing Horizontal Term Diverter Kit 19" / 482.6 mm PP Plastic
184162PP 8 Condensing Roof Discharge Termination Short (above roof) 38" / 965.2 mm PP Plastic
224047PP 6 Condensing Raised Horizontal Termination Kit ("Snorkel") PP Plastic
185344PP Roof Termination Extension Kit PP Plastic

Elbows

Non-Condensing (Luxury and Value Series)
Part Number Image Description Inner Exhaust Material Outer Intake Material
224050 9 45-Degree Elbow (Quantity of 2) Aluminum Plastic
224063 10 90-Degree Elbow Aluminum Plastic
224250 9 45-Degree Elbow (Quantity of 2) Aluminum Metal
224255 10 90-Degree Elbow Aluminum Metal
Condensing (Ultra Series)
Part Number Image Description Inner Exhaust Material Outer Intake Material
224077PP 9 45-Degree Elbow (Quantity of 2) PP Plastic
224078PP 10 90-Degree Elbow PP Plastic

Termination Kits include elbow and rubber wall plate.

Vent Pipe Extensions

Non-Condensing (Luxury and Value Series)

Part Number Image Description Inner Exhaust Material Outer Intake Material
224051 11 Vent Pipe Extension 10" / 254 mm Aluminum Plastic
224052 11 Vent Pipe Extension 19.5" / 495.3 mm Aluminum Plastic
224053 11 Vent Pipe Extension 39" / 990.6 mm Aluminum Plastic
224054 12 Telescoping Vent Length 2"-12" / 50.8-304.8 mm Aluminum Plastic
224275 12 Telescoping Vent Length 2"-12" / 50.8-304.8 mm Aluminum Metal
224260 11 Vent Pipe Extension 10" / 254 mm Aluminum Metal
224265 11 Vent Pipe Extension 19.5" / 495.3 mm Aluminum Metal
224270 11 Vent Pipe Extension 39" / 990.6 mm Aluminum Metal

Condensing (Ultra Series)

Part Number Image Description Inner Exhaust Material Outer Intake Material
224087PP 11 Vent Pipe Extension 10" / 254 mm PP Plastic
224079PP 11 Vent Pipe Extension 19.5" / 495.3 mm PP Plastic
224080PP 11 Vent Pipe Extension 39" / 990.6 mm PP Plastic

Additional

Non-Condensing (Luxury and Value Series)
Part Number Image Description
222053 13 Condensate Trap Suitable for use with plastic and metal components
224040 14 NSF Cover (for commercial applications)
Non-Condensing & Condensing (Ultra Series)
Part Number Image Description
146141 15 Roof Flashing Assembly (flat roof) Suitable for use with plastic and metal components
189950 16 Shingle Roof Flashing (1/12 to 6/12 pitch; plastic)
189951 16 Shingle Roof Flashing (6/12 to 12/12 pitch; plastic)
189952 16 Shingle Roof Flashing (8/12 to 16/12 pitch; plastic)
50171949 17 Tile/Shingle Roof Flashing (1/12 to 6/12 pitch; metal)
50171961 17 Tile/Shingle Roof Flashing (6/12 to 12/12 pitch; metal)
50171954 17 Tile/Shingle Roof Flashing (8/12 to 16/12 pitch; metal)
242141 18 Flashing for Metal Roof
710342 19 Rubber Wall Plate (white)
710602 19 Rubber Wall Plate (black)
224045 20 Thimble (1 piece per box)
169044 21 Pipe Clamp
224097 22 Metal Pass Through Plate
224042 23 Universal Bug Guard

Accessories

Digital Temperature Controller

Part Number Description Temp. Range Color
MC-91-2S Residential/Commercial Standard Digital Controller 98°-140°F / 36°-60°C Silver
MC-91-2W Residential/Commercial Standard Digital Controller 98°-140°F / 36°-60°C White
MCC-91-2W Commercial Controller >140°F / 60°C White
MC-100V-1S Deluxe Digital Controller with Clock and Call Feature 98°-140°F / 36°-60°C Silver
MC-100V-1W Deluxe Digital Controller with Clock and Call Feature 98°-140°F / 36°-60°C White
BC-100V-1S Bath Fill Digital Controller 98°-140°F / 36°-60°C Silver
BC-100V-1W Bath Fill Digital Controller 98°-140°F / 36°-60°C White
MC-195T-US 24-Hour Digital Controller for Recirculation 98°-140°F / 36°-60°C Silver/ Black

Scalecutter®

Part Number Description Feed
103000038 ScaleCutter System 3/4" Feed 3/4"
103000039 ScaleCutter System Refill 3/4"

Additional Accessories

Part Number Description Series
GTK15 Grundfos® Pump with Timer Kit for Rinnai Circ-Logic Enabled Models Ultra/ Luxury
804000074 Condensate Neutralizer Kit for Condensing Tankless Models Ultra
PC-20-W Pipe Cover Enclosure for Model V53e Value
PCD03-EWV Pipe Cover Enclosure (Euro White) Value (V65/ V75)
PCD03-SM2 Pipe Cover Enclosure Luxury
PCD07-SM Pipe Cover Enclosure Ultra
RGB-20U Universal Tankless Recess Box for Model V53e Value
RGB-25U-C Universal Tankless Recess Box for Models RL94e, RL75e, V75e, V65e (VA, VB, VC) Luxury/ Value
RGB-CTWH-2 Tankless Recess Box for Condensing Models Ultra
RGB-25-MSAL-C Moisture Seal Recess Box Luxury
REU-MSB-M Multi-Unit Controller Master Unit Ultra/ Luxury
REU-MSB-C1 Cable to Connect Ultra and Luxury Series Water Heaters Ultra/ Luxury
REU-MSB-C2 Cable to Connect MSB-M Control Units Ultra/ Luxury
REU-EZC-1US EZConnect® Cable for Connecting 2 Units All

Rinnai Tankless Water Heaters – Flow Chart and HERS Data

Rinnai Tankless Water Heaters Hot Water Flow Curve

Tankless water heater output is based on delta T, which is the difference between the incoming water temperature and the requested output temperature. This chart is used along with other factors to help size the Rinnai Tankless model for your application.

HERS Scores Improve With Rinnai Tankless Water Heaters

The Home Energy Rating System (HERS) Index is the industry standard by which a home's energy efficiency is measured. A lower HERS Index Score means a more energy-efficient home, which means lower energy costs.

Data analysis conducted by independent third party HERS rater compares traditional electric and gas residential storage tank water heaters to Rinnai's Condensing and Non-Condensing Tankless Water Heaters. Consult and validate your specific application with a local HERS rater.

For more information specific to your zone or city, visit www.hersindex.com.

A tradition of TRUE RELIABILITY.

For nearly 100 years, Rinnai has been committed to delivering superior experiences. Rinnai's people stand behind their products, offering 24/7 technical support and a national network of independent installers. On-staff engineers assist with product selection and sizing, inspiring confidence along with comfort.

Learn more about Rinnai high-performance Tankless Water Heaters, Hybrid Tank-Tankless Water Heaters, Boilers, Vent-Free Fan Convectors and Energy Saver® Direct Vent Wall Furnaces at: www.rinnai.us

Rinnai America Corporation 103 International Drive, Peachtree City, GA 30269 Toll-Free: 1-800-621-9419 Phone: 678-829-1700 www.rinnai.us

©2015 Rinnai America Corporation. Rinnai is continually updating and improving products; therefore, specifications are subject to change without prior notice. Local, state, provincial, federal and national fuel gas codes must be adhered to prior to and upon installation.

Models: 351-RL94IP, 351-RL94IP Tankless Water Heaters, 351-RL94IP, Tankless Water Heaters, Water Heaters, Heaters

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