Rinnai Water Heater MC 100V 1 S User Guide

THE RINNAI LUXURY SERIES  
TANKLESS WATER HEATERS  
ENERGY-EFFICIENT HOT WATER NEVER LOOKED SO GOOD  
WHOLE-HOUSE ANd COMMERCIAL TANkLESS WATER HEATING SOLUTIONS  
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endless options  
flexibility + control  
Accessories  
innais line of digital controllers allows you to set water  
R
temperature precisely for multiple locations in your home, analyze  
and troubleshoot the water heater, and even automatically fill  
your bath to a pre-set temperature and volume. (Note: the MC-91  
controller is integrated on the front panel of the RL Series interior  
units and comes standard with all RL Series exterior units.)  
MC-91-1-S Digital  
Controller Integrated in  
Internal Unit; Standard  
Digital Controller for  
Exterior Unit  
Flexible Installation  
For interior installation, Rinnai units use a concentric venting  
system – a single vent assembly featuring an inner, metal  
vent for exhaust gases and an outer PVC or metal tube  
for bringing combustion air from outdoors. The result: a  
direct-vent, sealed-combustion system that offers optimum  
safety, performance and ease of installation.  
MC-100V-1-S  
Deluxe Digital  
Controller  
Exterior units can be installed in a recessed enclosure, which can be  
painted or textured to match your homes panel or brick siding.  
Other benefits include:  
• Integrated Condensate  
Collector: ensures  
Multiple Units  
condensation doesn’t drain  
back into unit, and reduces  
cost of venting.  
If you need more than one unit for your larger home, spa or  
body spray shower, Rinnais EZConnect® feature allows you to  
link two units with a simple cord. For even larger applications,  
your installer can place up to 25 units in parallel.  
BC-100V-1US-S Bath-Fill  
Digital Controller  
• High-Altitude Operation: all  
RL Series units can be adjusted  
for use up to 10,200 ft.  
EXTERIOR WALL-MOUNT  
installations require no  
additional venting accessories.  
CUSTOM INSTALLATIONS to blend  
in with the interior (shown at left with  
optional pipe cover) or to be recessed on  
an exterior wall of the home.  
INTERIOR ROOF OR WALL VENTING  
The Rinnai can be vented vertically or horizontally.  
More Than 30 Million Installations Worldwide Make Rinnai #1!  
At Rinnai, we’ve sold more tankless water heaters worldwide than anyone else. Our complete  
commitment to safety, quality, support and the environment has also made us #1 in the U.S. market.  
Tomorrow’s Innovation Today  
As the leading manufacturer of gas heating products worldwide, Rinnai continues innovating  
to ensure a greener environment. Rinnais superior heating and hot water technologies deliver  
greater efficiency and reliability, so everyone benefits – with environmental preservation and  
energy conservation that results in a better planet for us all.  
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the Luxury Series  
introducing endless hot water for any home  
Contemporary Design  
xperience a never-ending supply of fresh hot water – and a sleek,  
sculpted water heater design that reflects the innovative technology  
E
within. With their attractive silver finish, Rinnai Luxury Series units are  
available in interior and exterior models, giving you virtually unlimited flexibility  
to install your unit wherever you choose.  
Perfect for Any Home  
RL75i  
The remarkable combination of design and performance makes the RL Series the  
perfect choice. Whether you’re building a spacious new home – complete with  
luxurious spa bath and body spray system – or remodeling an older home, RL Series  
units can be used individually, in pairs, or in banks of three or more to supply all your  
hot water needs.  
Key Features of the Luxury Series  
• Sleek, modern design  
• Commercial-grade heat exchanger for  
residential and commercial applications  
• Industry-leading activation rate of  
0.4 GPM to accommodate low flow fixtures  
• EZConnect® (connects two units  
Rinnai Luxury Series interior-mount units can be placed in any room – no need  
to hide them in closets or utility rooms – and vent directly to the outside. Exterior  
units require no additional venting and can even be installed in a recessed  
enclosure, then painted or textured to match the exterior of your home for a  
clean, inconspicuous appearance.  
together)  
• Pre-set with a maximum temperature  
of 120° F, with an option to increase it  
to 140° F  
Improved Performance and Longevity  
• Up to 12-year heat exchanger limited  
warranty (5 years commercial use), 5 years  
labor and parts. See warranty information  
on back cover for more details.  
Whichever RL Series unit you choose, you  
get the benefit of a commercial-grade  
heat exchanger for optimum durability. In  
fact, the same unit can be used for both  
residential and commercial applications.  
Homeowners get the reliability of  
Rinnai has ENERGY STAR®  
qualified models available.  
Rinnai is committed to making  
energy efficient products that  
help consumers and businesses  
save money and protect  
commercial-grade  
construction,  
and  
commercial customers get lower cost and  
wider availability of units.  
the environment.  
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commercial  
commercial applications  
Commercial Quality atYour Fingertips  
oth commercial and residential customers benefit from the innovative  
heat exchanger design of the RL Series. To achieve this level of  
performance, Rinnai engineers designed the heat exchanger to  
B
maximize thermal transfer and minimize thermal stresses. Rigorous high-  
temperature reliability testing confirmed the design. And now Rinnai delivers  
to you the most reliable, durable tankless water heater in our history.  
Commercial Applications  
• Restaurants  
This dual-use heat exchanger provides commercial customers a benefit  
unique to Rinnai: the ability to access a commercial-grade water heater at  
any of our over 2,000 distribution outlets. So, when emergencies occur and  
replacement units are needed immediately, you can recover quickly to peak  
business performance.  
• Car Washes, Laundromats  
• Schools, Colleges and Universities  
• Public Facilities and Event Venues  
• Hotels and Motels  
• Nursing Homes  
Additional Commercial Features and Benefits:  
• Industrial Facilities  
• Variety of digital controllers allows precise control and monitoring.  
• Multi-unit options: the EZConnect® cable (for 2 units) or a multi-  
unit control system (for up to 25 units ) allows units to be used in  
combination and in rotation, to avoid wearing out the first unit in  
a manifolded series and create redundancy.  
• All Rinnai units will have isolation valves included in every box to  
insure professional and serviceable installations.  
• Exterior units can be mounted on outside walls or on rooftops with  
no additional protection or venting.  
• Rinnais concentric venting system means zero clearance, sealed  
combustion, and single wall or roof penetration for maximum safety  
and installation simplicity.  
Contact Rinnai Applications Engineers to learn more about system  
configurations and requirements.  
RL94e  
Full service restaurant gains extra mechanical  
room square footage for additional storage plus  
redundancy by installing multiple units on the  
exterior wall.  
At this 40-room hotel, exterior units are mounted on  
the rooftop with no additional venting. Hotel owners room with increased efficiency and less capital  
have experienced 50 percent reduction in therms per  
occupied room.  
High school expands available space in mechanical  
expense.  
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Interior Residential/Commercial Models  
Models available in Natural Gas or Propane  
Dimensions  
Weight  
RL75i  
14” W x 23” H x 10“ D  
51 lbs  
RL94i  
14” W x 23” H x 10“ D  
53 lbs  
Maximum/Minimum Gas Rate  
180,000 /9,900 (NG)  
199,000/9,900 (NG)  
(Input BTU’s)  
180,000/10,300 (LP)  
190,000/10,300 (LP)  
Hot Water Capacity Range  
Energy Factor (NG and LP)  
Thermal Efficiency (NG and LP)  
0.26 to 7.5 GPM†  
.82  
NA  
0.26 to 9.4 GPM†  
.82  
NA  
Temperature Range (Min - Max)  
Residential**  
98° F - 140° F  
98° F - 160° F  
98° F - 140° F  
98° F - 185° F  
Commercial***  
RL75e  
RL94e  
Standard Digital Controller  
Optional Controller  
MC-91-1  
MC-100V-1, BC100V-1, MCC-91-1  
RL75i  
Exterior Residential/Commercial Models  
Models available in Natural Gas or Propane  
Dimensions  
Weight  
RL75e  
14” W x 23” H x 10“ D  
51 lbs  
RL94e  
14” W x 23” H x 10“ D  
51 lbs  
Maximum/Minimum Gas Rate  
180,000 /9,900 (NG)  
199,000/9,900 (NG)  
(Input BTU’s)  
180,000/10,300 (LP)  
199,000/10,300 (LP)  
Hot Water Capacity Range  
Energy Factor (NG and LP)  
Thermal Efficiency (NG and LP)  
0.26 to 7.5 GPM†  
.82  
NA  
0.26 to 9.4 GPM†  
. 82  
NA  
Temperature Range (Min - Max)  
Luxury Series Warranty  
Residential**  
98° F - 140° F  
98° F - 160° F  
98° F - 140° F  
98° F - 185° F  
Commercial***  
Warranty (some restrictions apply): Heat exchanger limited  
warranty 12 years residential; 3 years when used in certain recirculating  
systems; 10 years when used with a Rinnai hydronic furnace; 5 years  
in commercial applications. All other parts: 5 years. *Labor: 5 years  
residential and 2 years commercial for Luxury/Ultra models when  
registered within 30 days of installation, 1 year all other applications.  
Standard Digital Controller  
Optional Controller  
MC-91-1  
MC-100V-1, BC100V-1, MCC-91-1  
** Units come with a default maximum temperature of 120° F for increased safety and code compliance. An option to increase  
the max temp to 140° F is also available.  
*** To achieve temperatures over 140° F, an MCC-91 commercial controller must be purchased separately.  
0.4 GPM activation rate for RL Series  
Tankless Water Heater - Maximum Flow Curves  
HOT WATER FLOW CHART  
10  
9
MODEL NO.  
RL94i/e  
GPM  
2.4  
2.5  
2.6  
2.7  
2.8  
2.9  
3.0  
3.2  
3.3  
3.5  
3.7  
3.9  
4.2  
4.4  
4.7  
5.1  
5.5  
6.0  
6.6  
7.4  
8.3  
9.4  
9.4  
9.4  
9.4  
RL75i/e  
GPM  
2.1  
2.2  
2.3  
2.4  
2.5  
2.6  
2.7  
2.9  
3.0  
3.2  
3.3  
3.5  
3.8  
4.0  
4.3  
4.6  
5.0  
5.5  
6.0  
6.7  
7.5  
7.5  
7.5  
7.5  
7.5  
TEMP. RISE (°F)  
140  
135  
130  
125  
120  
115  
110  
105  
100  
95  
RL94i/e (NG)  
RL94i (LP)  
8
7
6
RL75i/e  
5
4
3
2
1
0
90  
85  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
20  
0
25  
50  
75  
100  
125  
Temperature Rise ( F)  
˚
Rinnai is continually updating and improving products; therefore, specifications are subject to change without  
prior notice. Local, state, provincial and federal codes must be adhered to prior to and upon installation.  
FOR MORE INFORMATION ON RINNAI pROdUCTS  
OTHER RINNAI LITERATURE AvAILABLE  
HYDRONIC  
FURNACES  
DIRECT VENT  
WALL FURNACES  
RINNAI  
GREEN ADVANTAGES  
Rinnai America Corporation  
103 International Drive  
Peachtree City, GA 30269  
Toll Free 1-800-621-9419  
Phone: 678-829-1700 • Fax: 678-364-8643  
E-mail: marketing@rinnai.us  
R-CNWH-E-12r10 © 2011 Rinnai America Corporation 5M 04/2011  
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why tankless?  
at a glance  
Unlimited hot water supply maintains  
consistent, safe temperature.  
Heat Water Only WhenYou Need It!  
ankless water heating is the wave of the future – available to you today.  
One Rinnai unit delivers 240 gallons or more  
per hour with no recovery time.  
You’ll enjoy more than 40 percent energy savings1, continuous hot  
water, and significant space savings2 – plus a typical life span of 20 years  
or more in residential applications. And this “green” technology produces less  
CO2 and NOX than conventional gas or electric tank water heaters.  
T
TEN 40-GALLON ELECTRIC WATER HEATERS**  
R94Le  
OR SIX 40-GALLON GAS WATER HEATERS*  
You see, Rinnai Tankless Water Heaters use natural gas or propane gas to heat  
water only when needed. When water flow is detected, the Rinnai begins  
heating water as it passes through its copper heat exchanger. The design of the  
unit allows it to capture up to 84 percent of the heat energy, making it highly  
efficient and cost effective.  
Based on 77˚ Rise, * Based on a 34,000 BTU input.  
** Based on 4,500 Watt elements.  
When the demand for water ceases, the tankless unit shuts down and uses no  
electricity – a revolutionary advantage over inefficient tank-style heaters. More  
efficient when its on, and off when its off, the Rinnai Tankless Water Heater is the  
ultimate choice in todays world of high energy costs and environmental preservation.  
WHOLE-HOUSE SIMULTANEOUS BATH USE –  
SIZING CHART  
Ground Water Temperature  
Model  
Summer Season – 70° F  
Winter Season – 50° F  
Additionally, your Rinnai is supported by the most extensive group of  
professionals in the business. Our nationwide network of more than  
20,000 trained and registered installers ensures a trouble-free installation  
and reliable after-the-sale support.  
RL75i/e  
RL94i/e  
Never Run Out of Hot Water  
- Customer has the option of using the following appliances instead of a shower:  
residential grade clothes washing machines or dishwashers.  
- Shower heads assumed to be 2.5 GPM mixed flow rate or less. If custom shower  
fixtures i.e. body sprays, large rain heads, or tubs over 60 gallons in capacity are  
used, please contact Rinnai.  
- Bathroom sink faucets assumed to be 2 GPM mixed flow rate or less.  
- Assumed mixed temperature on shower heads and bathroom sink faucets to be 104º F.  
- Assumed Rinnai set point to be 120°F.  
Tankless water heating is one of the few energy-saving technologies that  
actually improves the quality of your life. You’ll delight in continuous hot  
water – for bathing, cooking, dishes, laundry, and all the other countless ways  
hot water enriches your life. Plus, our digital controllers give you precise  
control of the output water temperature for the ultimate in comfort and safety.  
- Assumed 50 psi - 80 psi inlet water pressure for maximum flow.  
Save Space  
Traditional tank water heaters can take up to 16 square feet of valuable  
floor space. But your Rinnai unit – only about the size of a carry-on  
suitcase – can be installed on virtually any wall inside or outside your  
home or building, so you can strategically locate the unit for maximum  
performance and energy efficiency.  
1
ESTIMATEd ANNUAL ENERGy COST COMpARISON  
Costs less to operate on an annual basis.  
Rinnai RL94i  
$223  
40-Gallon Gas Tank**  
$281  
Rinnai RL Series Tankless vs Other Tankless  
Direct-Vent Sealed Combustion  
Free Air Space Requirement (cu. ft.)  
Zero-Clearance Venting  
Other Tankless  
Rinnai  
40-Gallon Electric Tank**  
$492  
Limited  
Up to 9,990  
Limited  
*
Based Upon DOE Average Energy Costs for 2008 (www.doe.gov)  
** Source: AHRI Consumers Directory of Certified Efficiency Ratings  
3.1  
Concentric Vent (One Penetration)  
Limited  
12-Year Heat Exchanger Warranty**  
24/7/365 Technical Support  
Limited  
Limited  
2
TANkLESS vS. TANk COMpARISON  
Significant space savings over  
conventional tank water heaters.  
Rinnai RL Series Tankless vs Traditional  
Tank  
40-Gallon Tank  
Rinnai  
Dimensions:  
14" W x 26" H x 10" D vs  
approx. 20" Dia. x 47" H  
Hot Water Capacity  
Unlimited  
40 gallons  
Digital Control for:  
• Set Temperature  
No  
No  
Space Savings:  
Avg. 12-16 sq. ft.  
Wall mounted  
vs 40-gallon tank  
• Consistent Temperature  
• Self-Diagnostics  
No  
Interior/Exterior Install Options  
Warranty/Avg. Service Life (Years)  
Interior Only  
6/12  
Weight Savings:  
50 lbs. vs approx. 320 lbs.  
or more during use  
12**/20  
** Residential: 12 years on heat exchanger, 5 years on all other parts, 5 years labor.  
Commercial: 5 years on heat exchanger and all other parts, 2 years labor.  
See warranty information on back cover for more details.  
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