The Ultra Experience Of An
ENDLESS SUPPLY OF
HOT WATER.
ULTRA SERIES TANKLESS WATER HEATERS
Our performance
is proven.
OUR PROMISES
ARE KEPT.
Nearly 100 years ago, we at Rinnai
established a tradition of never settling for
less than the absolute best—a tradition
that has grown even stronger today.
Thanks to superior design and engineering,
Rinnai residential and commercial water
heating and home heating solutions
continually raise the standard in comfort,
convenience and reliability. In fact, our
commitment to building in quality at every
level has made Rinnai Tankless Water
Heaters the #1 selling tankless water
heating brand in the U.S. and Canada.
Beyond manufacturing the highest quality
tankless water heaters and home heating
products, our people stand behind all
that we make, before, during and long
after installation. From 24/7/365 technical
support for professionals, to our national
network of independent installers, to
on-sta engineers who can assist with
choosing the right products and sizes—
we’re inspiring condence right along with
the comfort our solutions provide.
From products to service and everything
in between, our dedication to delivering
our absolute best never wavers.
2
Enhancing the
COMFORTS OF HOME.
With either Rinnai Tankless Water Heaters or
the RH180 Hybrid Tank-Tankless Water Heater,
homeowners can now have more hot water than
they ever thought possible.
The innovation behind our high-eciency water
heaters provides an endless supply of hot water
wherever and whenever it’s needed – even
for multiple tasks at the same time. Showers
and baths? Laundry and dishes? On-demand
heating means hot water is always available, so
prioritizing activities and scheduling water use
is no longer necessary.
Because they operate on an as-needed basis,
Rinnai Tankless Water Heaters can use up to 40
percent* less energy than traditional systems,
which helps reduce utility costs. This ecient
operation can also contribute to a favorable
HERS rating and optimize LEED certication.
*As based on the average cost to run an electric tank water heater per the DOE Average Energy Costs (www.doe.gov).
On top of eciency, our tankless water heaters
feature a copper heat exchanger for unparalleled
quality, durability and safety. And their compact
design oers substantial space savings in the
home.
The RH180 Hybrid Tank-Tankless Water Heater
harnesses the same on-demand tankless
technology coupled with an ecient storage
tank to deliver more hot water with less recovery
time than a traditional tank. And professionals
enjoy time and labor savings with quick and easy
installation using standard tank connections.
The exibility and convenience of endless hot
water. The reliability of proven engineering.
It’s everything homeowners need to feel
comfortable.
Only from Rinnai.
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 allow Rinnai
Tankless Water Heaters to produce an endless supply of hot water
to suit even the most demanding applications—from restaurants to
hotels to multifamily residences to schools and more— conserving
energy that can save thousands of dollars in capital, operational
and life cycle costs, while providing redundancy and saving space.
But it’s not just performance that sets us apart. Our commitment to
safety, quality and support has made us the #1 selling tankless brand
in the U.S. and Canada.
From products to service and everything in-between, our dedication to
delivering our absolute best never wavers.
For A Free Sizing Consultation, Call Our Application
Engineers At 866-383-0707.
3
Rinnai Tankless Solutions Give You
THE POWER TO LIVE BETTER.
Tankless technology that saves you time.
Never think about your hot water needs again: Innovative technology provides an endless supply of hot water whenever
and wherever it’s needed – even for simultaneous uses at multiple xtures. Showers and baths? Absolutely. Laundry and
dishes? No problem. Prioritizing activities and scheduling hot water use is a thing of the past.
Save money, splurge on performance.
Designed for eciency: Rinnai’s tankless technology features copper heat exchangers to provide maximum eciency and
uses up to 40 percent less energy* than a traditional tank.
Save energy: By operating only when hot water is needed, and no storage tank to heat and reheat water, our tankless
technology helps save on energy and utility costs. The use of an electronic ignition means no standing pilot light that constantly
uses energy.
A smart investment: Increase your home’s value with premium technology, increased energy eciency, an improved Home
Energy Rating System (HERS) Index Score and optimized LEED certication. Available energy eciency rebates and tax
credits oer the opportunity to help make your purchases more aordable.
Multiple sizes: Rinnai gives you options to right-size your installation and customize your eciency.
Replace parts, not systems: Every part of a Rinnai Tankless Water Heater is replaceable. Components can be easily
exchanged, if needed, versus replacing the entire system.
Save space with a compact design.
Maximum output, minimum space: About the size of a small suitcase at 18.5” x 26” x 10” or smaller, these wall-mounted
models can be installed on interior or exterior walls and in compact spaces to free up valuable space.
Flexible installation: Small size allows for installation in non-traditional spaces such as crawl spaces and attics, making it
perfect for use in any size home, including manufactured and modular homes.
Stay green with a sustainable choice.
Earth-friendly eciency: Our tankless technology achieves maximum energy eciency, helping to conserve natural
resources.
Less waste: Compact heat exchanger design, longer product lifespan up to twice as long as a traditional tank** and recyclable
parts means less waste in landlls.
High standards for low emissions: Lower CO2 emissions contribute to cleaner air and a healthier environment.
CONDENSING
TECHNOLOGY
Ultra Series
THE ULTIMATE IN EFFICIENCY.
Delivering our most energy-ecient performance, the Ultra Series features a
condensing design with two heat exchangers to maximize heating value to enhance
reliability and durability and reduce maintenance.
UNIQUE FEATURES OF ULTRA SERIES
• Energy Factor of up to .96
®
• ENERGY STAR
• Available in ve sizes:130,000, 152,000, 160,000, 180,000 and 199,000 BTU
• Allows for either Concentric Polypropylene or dual-pipe PVC/CPVC venting,
providing the most venting exibility in a single application of any manufacturer
• Faster hot water provided by integrated recirculation pump and internal bypass line
(RUR models) with or without a dedicated return line
• Easy maintenance is achieved with included isolation valves
qualied
* As based on the average cost to run an electric tank water heater per the DOE Average Energy Costs (www.doe.gov).
4
** Based on DOE ENERGY STAR® lifecycle estimates.
CONDENSING TANKLESS TECHNOLOGY
RINNAI ULTRA SERIES - RUR MODEL
Imagine turning on a shower and getting hot water almost immediately. Considering the average family loses precious time and
numerous gallons a day waiting for water to heat up, that would be an invaluable change in routine. If you’re tired of standing idly
by while time and water go down the drain, Rinnai has ve words that are sure to inspire you: Faster Hot Water Is Here!
Bringing Faster Hot Water Home.
Our focus on enhancing homeowners’ lives by changing the way water is heated has created an exciting breakthrough in
recirculation that puts faster hot water a turn of the knob away.
Rinnai’s Ultra Series Tankless Water Heater RUR Models use thermal bypass technology that includes an integrated recirculation
pump, an internal bypass line inside the model and a thermal bypass valve, and MC-195T 24-Hour Digital Controller provided
inside the box to send unlimited hot water wherever and whenever it’s needed, all in one comprehensive solution. By keeping
a steady supply of heated water in the supply line during active circulation periods, the RUR makes hot water rapidly available
in showers, sinks and appliances such as washing machines and dishwashers.
Wait Less, Waste Less.
Getting hot water faster creates signicant benets above and beyond the convenience of saving time. Recirculation means
less water and money down the drain, saving on natural resources and the utility costs related to gas and water usage.
And you can save even more energy by programming the 24-hour digital controller that’s included in the box. It enables the
scheduling of multiple recirculation events throughout the day to align with usage patterns and ensure hot water is available
at the xtures during peak demand times such as early morning before work and school.
With the typical U.S. home wasting potentially thousands of gallons of water annually waiting for hot water, the RUR’s fast-
track delivery system pays o at the faucet and in the budget. And the convenience and comfort of hot water recirculation
is an attractive feature that adds resale value to a home.
Adaptable to plumbing systems with or without a dedicated recirculation line, the Ultra Series Tankless Water Heater RUR
Models are the only tankless water heaters to feature both Concentric and PVC/CPVC venting options on the same model,
oering the ultimate exibility.
The pleasure of faster hot water is truly at hand. And big water and gas savings are on tap, too. Thanks to Rinnai’s smart
recirculation technology, there is less waiting and less waste.
Rinnai introduces the rst and only tankless
water heater in the industry to oer both
concentric and PVC/CPVC venting and
integrated recirculation on the same
model. Rinnai Tankless Water Heaters
deliver trusted quality and proven reliability
you can count on. From ecient, durable
products to experienced support, there is
simply no better choice than Rinnai.
• Wide range of quality product oerings
• Easy, safe ventilation options
• 24/7 technical support for professionals
• Engineering application support for
commercial customers
• Industry-leading recirculation capabilities
• More venting solutions on the same model
2
6
7
8
1
3
4
5
1
Concentric Vent Stack
2
Dual Pipe Vent Option
3
Burner & Gas Manifold
4
Primary Heat Exchanger
5
Secondary Heat Exchanger
6
Integrated Condensation Trap
7
Built-In Circulation Pump
8
Internal Bypass Line
9
Modulating Gas Valve
10
Built-In Surge Protector &
PC Board
9
10
5
The Rinnai Ultra Series Tankless Water Heater RUR Models
SAVING TIME, WATER AND MONEY WITH SMART RECIRCULATION.
Recirculation in action… HOW THE RUR WORKS.
Dedicated Return Line
Rinnai is the only manufacturer to oer a tankless model, the RUR, which is easily
adaptable to plumbing systems with or without a dedicated recirculation return
line right out of the box.
In the Dedicated Recirculation Line mode, the integrated pump circulates water
from the tankless water heater through the hot water supply line and back to
the tankless water heater via the dedicated return line. A temperature thermistor
installed in the RUR’s inlet pipe is utilized to control the on/o sequence of the
integrated pump.
HOT WATER FIXTURES
In homes with a dedicated return line, the RUR also provides for additional control
of the integrated pump through Rinnai’s time and temperature-based Comfort or
Economy mode. In the Comfort mode, the pump on/o intervals can vary from
9 to 31 minutes depending on the temperature setting. When the return water
reaches the temperature called for at the tankless water heater, the pump will
turn o. In the Economy mode, the pump on/o intervals are less frequent and
vary from 18 to 62 minutes depending on the temperature setting, providing
additional energy and cost savings.
DEDICATED MODE
HOT WATER
COLD WATER
RETURN LINE
MC-195T 24-Hour Digital Controller
Both indoor and outdoor RUR models include a MC-195T 24-Hour Digital Controller, allowing you to adjust the timing and duration of the circulation system operation for maximum
energy savings. Rinnai Circ-Logic technology built into the water heater operates the pump
during active circulation periods.
6
Crossover Valve
In applications where a dedicated recirculation line is not available or dicult to install, the RUR Tankless Water Heater utilizes the Crossover mode of hot water recirculation. The RUR’s integrated recirculation pump, internal bypass line and thermal
bypass valve, which is included as standard with every RUR model, make the Crossover mode of recirculation possible. The
valve is installed between the hot and cold supply lines on the furthest xture in the plumbing line from the tankless water
heater. The cold water line is then used temporarily as the return portion of the circulation loop.
In the Crossover mode, the integrated pump circulates water from the tankless water heater through the hot water supply
line, through the thermal bypass valve, and back to the tankless water heater via the cold water line. When hot water is de-
tected at the valve, the water ow through the thermal bypass valve reduces down to barely a trickle, continuing to sense
water temperature in the line. The pump will continue to operate and recirculate inside the water heater only until the end of
the time interval and will restart at the beginning of the next interval. Installation of the bypass lter that’s included in the box
is used in the Crossover mode to allow the internal circulation of water through the water heater after the thermal bypass
valve has closed.
In Crossover mode, the RUR again provides for additional control of the integrated pump through time-only based Comfort
or Economy mode settings. In Comfort mode, the typical pump on/o intervals will vary depending on the length of recir-
culation loop used. For a short loop, the pump will be on for 8 minutes, o for 4; long loop, on for 16 minutes o for 4. In
Economy mode, again the typical pump on/o intervals will vary depending on the length of recirculation loop used. For a
short loop, the pump will be on for 8 minutes, o for 10; long loop, on for 16 minutes, o for 10, providing additional energy
and cost savings.
Regardless of the hot water recirculation method used, the end result is the same: During active circulation periods, hot
water is always available as it circulates from the hot water line back to the Rinnai RUR Tankless Water Heater.
Installed Thermal Bypass Valve
HOT WATER
COLD WATER
CROSSOVER MODE
13
7
Other Recirculation
SOLUTIONS
Rinnai recirculation solutions build on the already endless supply of hot water Rinnai
Tankless Water Heaters provide—adding the convenience of faster hot water.
Rinnai Circ-Logic technology comes standard on all Ultra models, and can be
used in combination with the following accessories to allow homeowners to set
recirculation patterns that coincide with their hot water usage patterns. Hot water is
available when needed, without the expense of circulating it during times of inactivity.
SOLUTION 1: GTK15 PUMP AND TIMER KIT
Allows homeowners to schedule multiple recirculation events throughout the day to align with
usage patterns, such as getting ready in the morning.
SOLUTION 2: MC-195T 24-HOUR DIGITAL CONTROLLER AND PUMP
A stylish, wall-mountable digital control panel works seamlessly with Rinnai Circ-Logic technology
and any properly sized pump. Multiple unique recirculation events can be programmed as well as
an override function for homeowners to start recirculation outside of scheduled events.
SOLUTION 3: RINNAI CIRC-LOGIC AND PUMP
For recirculation without scheduled events, simply pair a Circ-Logic equipped tankless model with
a properly sized pump. Recirculation intervals can be set to Comfort mode (shorter time intervals)
or Economy mode (longer time intervals). Recirculation deactivates once the water has reached
set temperature.
8
Feature
System Override
Capacity
Changes WH Temp
Pump and
Timer Kit
(GTK 15)
No Yes No
No Yes No
24-Hour
Digital Timer
Controller
(MC-195T) &
Pump
Pump
Only with
Circ-Logic
Control
Recirculation Using One
Rinnai Tankless Water Heater
Cold Water Supply Line
Hot Water Supply Line
Circ Logic Connection
Displays WH Codes
Dedicated Return
24-Hour Clock
Timed Events
# Timed Events
No Yes No
Yes Yes Yes
Yes Yes No
Yes Yes No
Multiple Multiple N/A
Showers and Faucets
Expansion Tank
3/4" Return Line
Pump
9
FLEXIBLE TANKLESS INSTALLATION OPTIONS
A First in Both Concentric and PVC/CPVC Venting for Condensing
Tankless Water Heaters On One Model
The new RUR and RUC models of the Rinnai Ultra Series Tankless Water Heaters are the only tankless water heaters to
oer Concentric Polypropylene or dual-pipe PVC/CPVC venting options on the same model. The dual venting conguration
on the top allows for maximum exibility for installers and dealers — one Concentric vent or two PVC/CPVC pipes can be
used for venting.
As the #1 selling brand of tankless water heaters in the U.S. and Canada, we still favor Concentric Polypropylene for its superior
joint t, no cure time, quick installation and reduced wall or roof penetrations, but as leaders in the industry, we understand
that PVC/CPVC can sometimes be more readily available or preferred in some installations.
Rinnai is the only tankless water heater manufacturer to oer both Concentric and dual-pipe PVC/CPVC on the same
model, providing more venting options right out of the box — saving time, money and oering the best exibility for faster
installations in homes and businesses — from one project to the next.
Dual pipe venting options available on RUR and RUC Tankless Water Heaters include:
• 3" or 4" PVC/CPVC*
• 3" Centrotherm InnoFlue Vent System (ULC-S636 listed)*
DUAL VENTING OPTIONS
Exhaust
Adaptor Ring
For concentric venting, installers simply
remove a nd discard the exhaust adaptor ring.
VENT TYPE
RUR / RUC
NATURAL GAS
RUR / RUC
PRO PANE
RUCS
• IPEX Concentric and Low Prole Termination Kit*
• Snorkel and Tee Terminations*
Intake Cap
For PVC/CPVC congurations, the intake cap is removed and
discarded. With this option, installers can use three - or four-inch PVC/
CPVC pipe for the intake and exhaust.
VENT TYPE
RUR / RUC
NATURAL GAS
RUR / RUC
PRO PANE
RUCS
Concentric PP
Twin Pipe PP
(Centrotherm)
*Reference Rinnai Tankless Water Heater Installation and Operation Manual for further information.
** Maximum equivalent vent lengths are specic 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.
10
65 Feet**
(19.8 m)
41 Fe et* *
(12. 5 m)
41 Feet
(12.5 m)
41 Feet
(12.5 m)
41 Feet
(12.5 m)
41 Feet
(12.5 m)
3” Dual Pipe
PVC/CPVC
(76.2 mm)
4” Dual Pipe
PVC/CPVC
(10.16 m)
65 Feet**
(19.8 m)
100 Feet**
(30.5 m)
41 Feet
(12.5 m)
65 Feet
(19.8 m)
41 Feet
(12.5 m)
100 Feet
(30.5 m)
Optimized Concentric Venting for Non-Condensing
Tankless Water Heaters
Rinnai Tankless Water Heaters were the rst 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.
The result is a direct-vent, sealed combustion system that oers optimum safety and performance.
Beyond performance, our concentric system option can make installation faster and easier with:
• Single penetration through the wall reducing install time and costs
• Simple positive-t components for secure connection
• Joint seals that expand and contract with weather to prevent damage
• Ease of assembly, adjustment and disassembly
Rinnai Makes Your 1/2” Gas Line an Option, Not an Obstacle.
If your tankless water heater installation calls for the use of ½” gas line, Rinnai has two words for you…
no problem. Pick the gas line – and the Rinnai – that’s right for you.
‡
Rinnai Tankless Water Heaters are designed to always provide maximum performance and operating
eciency using either a ¾” or ½” gas line, as long as sucient gas ow is available.
Because an undersized gas
RINNAI TANKLESS
WATER HEATER MODELS
V53e
RUCS65i
RUS65 e
V65e
V65i
RUC80i
RU 80e
RUCS75i
RUS75e
RL75i
RL75e
V75i
V75e
RUC90i
RU90e
RLX94i
RUC98i
RU98e
RL94i
RL94e
RUR98i
RUR98e
BTU
120,000
130,000
150,000
152,000
160,000
180,000
192,000
199,000
GAS LINE
1/2” 3/4”
MAXIMUM
EQUIVALENT LENGTH
100'
(30.4 m)
70’
(21. 34 m)
60’
(18. 29 m)
50’
(15. 24 m)
40’
(12.19 m )
450’
(1 37. 2 m)
350’
(106.7 m)
300’
(91.44 m)
250’
(76.2 m)
200’
(60.96 m)
175’
(53.34 m)
line can stress a tankless
system and potentially
reduce its life span, Rinnai
Tankless Water Heaters,
unlike other tankless water
heaters, are equipped with
innovative technology that
safely ceases operation if it
detects inadequate gas ow in
order to avoid compromising
performance and eciency.
The table to the left lists the maximum length for both
½” and ¾” gas lines when paired with each of Rinnai’s
Tankless Water Heaters.
How To Properly Size Your Gas Line:
• Determine what type of gas is being utilized
• Determine the inlet pressure
• Determine the allowed pressure drop
• Determine what other types of gas appliances
are sharing the gas line
• Determine the maximum loads expected on
the whole system as stated in the National Fuel
Gas Code
Source: NFPA 54/ANSI Z223.1 National Fuel Gas Code.
‡
For complete information on gas sizing for Rinnai Tankless Water Heaters,
consult the Operation and Installation Manual.
Venting av ailab le in ver tica l
and horizontal congurations.
Conce ntric st ructur e allow s hot
exhau st to exit th rough i nteri or
tube, wh ile fre sh air enter s
through the outer layer.
11
VENTING PARTS ACCESSORIES
TERMINATION & TERMINATION KITS
Part Number Image Description
1
223176PP
2
3
4
22 3177PP
223186PP
184162 PP
224 047PP
185344PP
Condensing Horizontal
1
Termination Kit
Condensing Horizontal
1
Termination Kit
Condensing Horizontal
2
Term Diverter Kit
Condensing Roof Discharge
3
TerminationShort (above)
Condensing Raised Horizontal
4
Termination Kit ("Snorkel")
12” / 304.8 mm PP Plastic
21” / 533.4 mm PP Plastic
19” / 482.6 mm PP Plastic
38” / 965.2 mm PP Plastic
— PP Plastic
— Roof Termination Extension Kit — PP Plastic
Material
Termination Kits include elbow and rubber wall plate.
Inner Exhaust
Outer Intake
Material
12
5
6
7
8
ELBOWS
Part Number Image Description
224077PP
224078PP
5 45-Degree Elbow (Quantity of 2) PP Plastic
6 90-Degree Elbow PP Plastic
VENT PIPE EXTENSIONS
Part Number Image Description
2240 87PP
224079PP
9
224080PP
10
ADDITIONAL
Part Number
11
12
146141
189950
189951
189952
50171949
50 171961
13
14
50 17195 4
242141
710342
15
7106 02
224045
16
169044
224097
224042
7 Vent Pipe Extension 10”/ 254 mm PP Plastic
7 Vent Pipe Extension 19.5” / 495.3 mm PP Plastic
7 Vent Pipe Extension 39” / 990.6 mm PP Plastic
Image Description
8 Roof Flashing Assembly (at roof)
9 Shingle Roof Flashing (1/12 to 6/12 pitch; plastic)
9 Shingle Roof Flashing (6/12 to 12/12 pitch; plastic)
9 Shingle Roof Flashing (8/12 to 16/12 pitch; plastic)
10 Tile/Shingle Roof Flashing (1/12 to 6/12 pitch; metal)
10 Tile/Shingle Roof Flashing (6/12 to 12/12 pitch; metal)
10 Tile/Shingle Roof Flashing (8/12 to 16/12 pitch; metal)
11 Flashing for Metal Roof
12 Rubber Wall Plate (white)
12 Rubber Wall Plate (black)
13 Thimble (1 piece per box)
14 Pipe Clamp
15 Metal Pass Through Plate
16 Universal Bug Guard
Termination Kits include elbow and rubber wall plate.
Inner Exhaust
Material
Inner
Exhaust
Outer Intake
Material
Outer Intake
Material
Suitable for use
with plastic and
metal components
ACCESSORIES
To further enhance the performance of Rinnai tankless water heating products, these accessories add even more exibility.
DIGITAL TEMPERATURE CONTROLLER
Part Number Description Tem p . Ra n g e Color
MC- 91-2 S
MC- 91-2 W
MCC -91-2W
MC -100V-1S
MC -100V-1W
BC -100V-1S
BC -100V-1W
MC-195T-US
Residential/Commercial Standard Digital Controller 98°–140°F / 36°–60°C Silver
Residential/Commercial Standard Digital Controller 98°–140°F / 36°–60°C White
Commercial Controller >140°F / 60°C White
Deluxe Digital Controller with Clock and Call Feature 98°–140°F / 36°–60°C Silver
Deluxe Digital Controller with Clock and Call Feature 98°–140°F / 36°–60°C White
Bath Fill Digital Controller 98°–140°F / 36°–60°C Silver
Bath Fill Digital Controller 98°–140°F / 36°–60°C White
24-Hour Digital Controller (For Recirculation) 98°–140°F / 36°–60°C Silver/Black
MC-195T-US
BC -10 0V-1S
MC -10 0V -1S
MC- 91-2S
SCALECUTTER®
Part Number Description Feed
103000038
103000039
ScaleCutter System 3/4" Feed 3/4"
ScaleCutter System Rell 3/4"
ADDITIONAL ACCESSORIES
Part Number Description Series
®
GTK15
804000074
PC D 07-S M
RGB-CTWH-2
REU-MSB-M
REU-MSB-C1
REU-MSB-C2
REU-EZC-1US
Grundfos
Condensate Neutralizer Kit for Condensing Tankless Models Ultra
Pipe Cover Enclosure Ultra
Tankless Recess Box for Condensing Models Ultra
Multi-Unit Controller Master Unit Ultra
Cable to Connect Ultra and Luxury Series Water Heaters Ultra
Cable to Connect MSB-M Control Units Ultra
EZConnect
Pump with Timer Kit for Rinnai Circ-Logic Enabled Units Ultra
®
Cable for Connecting 2 Units All
ScaleCutter System
Grund fos Pump wit h Timer Ki t
Condensate Neutralizer Kit
Pipe Cover Enclosure
Recess Box
13
Ultra Series
RUR Models RUC Models RU Models RUCS / RUS Models
CONDENSING TANKLESS WATER HEATERS MODEL CHART AND SPECIFICATIONS.
Model
Dimensions - w, h, d
Inches (mm)
Weight (lbs / kg)
Installation Type
Min. /Max. BTU (natur al gas)
Min./Max. BTU (propane)
Energy Factor
Temp. Range Residential
Temp. Range Commercial
Min. Ac tiva tion Rate
Flow Rate (70° / 50° Temp. Rise)
Hot Wate r Flow Rate Range
Controller (standard)
Controllers (optional)
Ultr a Low NOx
RUR98i RUR98e RUC98i RUC90i RUC80i
18.5 X 26 X 10
(469.9 X 660.4 X 254)
72.8 / 33 72.8 / 33 61.7 / 28.0 61.7 / 28.0 61.7 / 28.0
Indoor Outdoor Indoor Indoor Indoor
15,200/199,000 15,200/199,000 15,200/199,000 15,200/180,000 15,200/152,000
15,200/199,000 15,200/199,000 15,200/199,000 15,200/180,000 15,200/152,000
0.95 0.95 0.95 0.96 0.96
98°–140° F /
37°–60° C
98°–140° F /
37°–60° C
0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm)
5.5 / 7.7
(20.8 / 29.2)
0.26–9.8 gpm
(0.98 –37.1 lpm)
MC-195T-US MC-195T-US Integrated Integrated Integrated
MC-91-2US MC-91-2US
yes yes yes yes yes
18.5 X 26 X 10
(469.9 X 660.4 X 254)
98°–140° F /
37°–60° C
98°–140° F /
37°–60° C
5.5 / 7.7
(20.8 / 29.2)
0.26–9.8 gpm
(0.98–37.1 lpm)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
5.5 / 7.7
(20.8 / 29.2)
0.26–9.8 gpm
(0.98 –37.1 lpm)
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
18.5 X 26 X 10
(469.9 X 660.4 X 254)
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
5.0 / 7.0
(18.9 / 26.5)
0.26–9.0 gpm
(0.98 –34.1 lpm)
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
18.5 X 26 X 10
(469.9 X 660.4 X 254)
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
4.2 / 5.9
(15.9 / 22.3)
0.26–8.0 gpm
(0.98 –30.3 lpm)
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
Warranty (Residential)*
Warranty (Commercial)*
Mobile Home C ert ied
Valves Shipp ed in Box
High Altitude Approved
Certications
Venting Options
Tankles s Rack System (TRS/
TRW) Compatible
½” Gas Line Compatible***
yes yes yes yes yes
yes yes yes yes yes
Up to 10,200 ft. (3,109 m) Up to 10,200 ft. (3,109 m)
AHRI, CSA,
EN ER GY STA R
Concentric or
PVC / CPVC
no no yes no no
yes yes yes yes 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)
®
AHRI, CSA,
EN ER GY STA R
N/A
®
AHRI, CSA,
EN ER GY STA R
Concentric or
PVC / CPVC
* For complete information and details regarding Rinnai’s warranty, visit rinnai.us.
** To achieve temperatures over 140° F, an MCC-91 commercial controller must be purchased separately.
14
®
AHRI, CSA,
EN ER GY STA R
Concentric or
PVC / CPVC
®
AHRI, CSA,
EN ER GY STA R
Concentric or
PVC / CPVC
®
RU98e RU90e RU80e RUCS75i RUS75e RUCS65i RUS65e
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
18.5 X 26 X 10
(469.9 X 660.4 X 254)
61.7 / 28.0 61.7 / 28.0 61.7 / 28.0 57.3 / 26 57.3 / 26 57.3 / 26 57.3 / 26
Outdoor Outdoor Outdoor Indoor Outdoor Indoor Outdoor
15,200/199,000 15,200/180,000 15,200/152,000 10,300/160,000 10,300/160,000 10,300/130,000 10,300/130,000
15,200/199,000 15,200/180,000 15,200/152,000 10,300/160,000 10,300/160,000 10,300/130,000 10,300/130,000
0.95 0.96 0.96 0.93 0.93 0.93 0.93
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
98°–140° F /
37°–60° C
98°–185° F /
37°–85° C* *
120°–140° F /
49°–60° C
120°–140° F /
49°–60° C
120°–140° F /
49°–60° C
120°–140° F /
49°–60° C
Residential Only Residential Only Residential Only Residential Only
0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm) 0.4 gpm (1.5 lpm)
5.5 / 7.7
(20.8 / 29.2)
0.26–9.8 gpm
(0.98 –37.1 lpm)
5.0 / 7.0
(18.9 / 26.5)
0.26–9.0 gpm
(0.98 –34.1 lpm)
4.2 / 5.9
(15.9 / 22.3)
0.26–8.0 gpm
(0.98 –30.3 lpm)
4.2 / 5.9
(15.9 / 22.3)
0.26–7.5 gpm
(0.98–28.4 lpm)
4.2 / 5.9
(15.9 / 22.3)
0.26–7.5 gpm
(0.98–28.4 lpm)
3.4 / 4.8
(12.9 / 18.1)
0.26–6.5 gpm
(0.98 –24.6 lpm)
3.4 / 4.8
(12.9 / 18.1)
0.26–6.5 gpm
(0.98 –24.6 lpm)
MC-91-2US MC- 91-2US MC-91-2U S Status Monitor Status Monitor Status Monitor Status Monitor
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
MC-195T-US, MC-100V-1US,
BC-100V-1US, MCC-91-2US
MC-91-2US MC -91- 2US MC-91-2US MC-91-2U S
yes yes yes yes yes yes yes
Limite d 12-year on heat exchan ger, 5-year on par ts,
1-year on la bor (5-year optional o n labor )
Limite d 5-year on heat exc hange r, 5-year on part s,
1-year on la bor (2-year optio nal on la bor)
Residential Only Residential Only Residential Only Residential Only
Limite d 12-year on heat exchan ger, 5-year on par ts, 1-year on labo r
yes yes yes yes yes yes yes
yes yes yes no no no no
Up to 10,200 ft. (3,109 m) Up to 5,400 ft. (1,646 m)
AHRI, CSA,
EN ER GY STA R
®
N/A N/A
AHRI, CSA,
EN ER GY STA R
®
AHRI, CSA,
EN ER GY STA R
®
N/A
AHRI, CSA
EN ER GY STA R
Concentric or
PVC / CPVC
®
AHRI, CSA
EN ER GY STA R
®
N/A
AHRI, CSA
EN ER GY STA R
Concentric or
PVC / CPVC
®
yes no no no no no no
yes yes yes yes yes yes yes
*** For complete information on gas sizing for Rinnai Tankless Water Heaters, consult the Operation and Installation Manual.
AHRI, CSA,
EN ER GY STA R
N/A
®
15
RINNAI TANKLESS WATER HEATER OPERATION
CONDENSING RUC
How a Rinnai Tankless Water Heater Works
When the need for hot water arises by turning on a shower,
washing machine, dishwasher or faucet, cold water enters the
Rinnai Tankless Water Heater from the inlet pipe at the bottom
of the model. The PC board is then signaled to activate the ame
igniter or ignition.
A combustion fan turns on to allow oxygen into the burner to
ignite the ame as the gas control valve opens at a low frequency.
Once an adequate ame is present the igniter stops sparking —
beginning the next sequence of operation in a matter of seconds.
WATER
OUTLET
HOT
COLD
WATER
INLET
GAS
INLET
Water is heated as it passes through the coils of the copper
heat exchanger, and exits from the hot water outlet pipe to travel
through the pipes of the home or business to the water xture
where hot water is needed. For Condensing models, the water is
preheated as it passes through a secondary stainless steel (latent)
heat exchanger, capturing any extra heat (or latent heat) before it
escapes into the vent system.
The gas valve and blower automatically adjust the incoming gas
and oxygen to meet the water heating demands. If the demand is
small, the Rinnai Tankless Water Heater can use a smaller ame
and less gas. If the demand is greater, the ame can expand across
the width of the entire burner to heat more water. The tankless
water heater adjusts as needed to ensure the temperature set
point is maintained. A digital controller allows the user to choose
the desired temperature.
As the hot water xture shuts o, cold water stops entering the
tankless water heater and the ame diminishes. The combustion fan
continues to operate at a low speed for a short period of time. This
allows the exhaust of any leftover combustion gases in the system.
16
Tank vs. Tankless Annual Operating Costs*
Water Heater Technology
Standard 50-Gallon Gas Storage Tank
Standard 50-Gallon Gas Storage Tank
Standard 50-Gallon Electric Storage Tank
Mid-Efciency Non-Condensing Tankless
Mid-Efciency Non-Condensing Tankless
High Efciency Condensing Tankless
High Efciency Condensing Tankless
*Based on national averages per Department of Energy, U.S. Energy Information Administration.
Fu el Ty p e/
Energy SourceEF(Energy Factor)
Natural Gas 0.60 $273
Propane 0.60 $646
Electricity 0.95 $557
Natural Gas 0.82 $200
Propane 0.82 $473
Natural Gas 0.96 $171
Propane 0.96 $404
Annual Operating
Costs*
17
RINNAI TANKLESS WATER HEATERS – FLOW CHART AND HERS DATA
RINNAI TANKLESS WATER HEATERS HOT WATER FLOW CURVE
10
9
8
7
6
5
4
Hot Water Flow (GPM)
3
2
1
0
25 50 75 100 125
RUR98i/RUR98e/RUC98i
RUC90i/RU90e
RUC80i/RU80e
delta T - Temperature Rise °F
RL94i/RL94e
RLX94i
RL75i/RL75e
V75i/V75e
V65i/V65e
RUCS65i/RUS65e
RUSC75i/RUS75e
V53e
Tankless water heater output is based on delta T which is the dierence 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.
18
HERS SCORES IMPROVE WITH RINNAI TANKLESS WATER HEATERS
5
4
6
321
7
1
234
5
6
7
3-8 PTS
7
4-9 PTS
4
4-8 PTS
6
4-8 PTS
6
5-8 PTS
5
3-10 PTS
3
4-6 PTS
3-8 PTS
2
CLIMATE ZONES
3-5 POINTS
4-6 POINTS
3-10 POINTS
4-9 POINTS
5-8 POINTS
4-8 POINTS
3-8 POINTS
7
4-9 PTS
4
4-9 PTS
4
3-10 PTS
3
4-6 PTS
2
3-5 PTS
1
The Home Energy Rating System (HERS) Index is the industry standard by which a home’s energy eciency is
measured. A lower HERS Index Score means a more energy ecient 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 specic application with a local HERS rater.
For more information specic to your zone or city, visit www.hersindex.com.
19
A tradition of
TRUE RELIABILITY.
For nearly 100 years, we at Rinnai have been ercely committed to delivering nothing
less than a superior experience at every touch point.
Beyond manufacturing the highest quality products, our people stand behind
all that we make—before, during and long after installation. From the 24/7/365
technical support for professionals, to our national network of independent
installers for homeowners, to on-sta engineers who can assist with choosing
the right products and sizes—we’re inspiring condence right along with the
comfort our solutions provide.
R-CNWH-E-23 r5
U-V3
Learn more about Rinnai high-performance Tankless Water Heaters,
Hybrid Tank-Tankless Water Heaters, Boilers, Vent-Free Fan Convectors
and EnergySaver
®
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.
06/2015
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