Rinnai R98LS Manuale Utente

ankless water heating is the wave of the future – available to you today. 
You’ll enjoy up to 40% energy savings, endless hot water, and significant 
space savings – plus a typical life span of 20 years or more in residential 

applications. And this “green” technology produces less CO

2

 and NO

X

 than 

conventional gas or electric tank 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% of the heat energy, making it highly efficient and cost effective.
When the demand for water ceases, the tankless unit shuts down and uses no energy – 
a revolutionary advantage over inefficient tank-style heaters. More efficient when 
it’s on, and off when it’s off, the Rinnai tankless water heater is the ultimate choice 
in today’s world of high energy costs and environmental preservation.
Additionally,  your  Rinnai  is  supported  by  the  most  extensive  group  of 
professionals  in  the  business.  Our  nationwide  network  of  more  than  80,000 
registered  dealers  and  factory-trained  installers  ensures  a  trouble-free 
installation and reliable after-the-sale support.

Tankless water heating is one of the few energy-saving technologies that actually 
improves the quality of your life. You’ll delight in endless 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.

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 of your home or building. The 
compact design affords you almost limitless installation options, so you can 
strategically locate the unit for maximum performance and energy efficiency.

Summer Season – 65° F - 75° F 

Ground Water Temperature

Winter Season – 45° F - 55° F 

Endless  hot  water  supply  maintains  consistent, 
safe temperature. 
One  Rinnai  delivers  240  gallons  or  more  per 
hour with no recovery time.

Based on 77˚ Rise, * Based on a 34,000 BTU input. 
** Based on 4,500 Watt elements. 

Significant space savings over 
conventional tank water heaters.

Dimensions:

14" W x 26" H x 10" D vs 

approx. 20" Dia. x 47" H
Space Savings: 

Avg. 12-16 sq. ft. 

Wall mounted 

vs 40-gallon tank
Weight Savings:  

50 lbs. vs approx. 320 lbs. 

or more during use

-  Customer has the option of using the following appliances instead of a shower:  

 

residential grade clothes wash 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.
-  Assumed 50psi - 80psi inlet water pressure for maximum flow.

Costs less to operate on an annual basis.

40-Gallon Electric Tank**

Rinnai R94LSi 

*Based on 2006 annual energy costs.

40-Gallon Gas Tank**

*  Based Upon DOE Average Energy Costs for 2006
** Source: GAMA Consumers Directory of Certified Efficiency Ratings

Rinnai Tankless vs Traditional Tank

40-Gallon Tank

Hot Water Capacity

40 gallons

Digital Control for:

No

• Set Temperature

No

• Consistent Temperature

No

• Self-Diagnostics

No

Interior/Exterior Install Options

Interior Only

Warranty/Avg. Service Life (Years)

6/12

*12-year warranty is for heat exchanger of units installed in residential applications;  

5 years for commercial applications.

Rinnai Tankless vs Other Tankless

Other Tankless

Direct-Vent Sealed Combustion

Limited

Free Air Space Requirement (cu. ft.)

Up to 9,990

Zero-Clearance Venting

Limited

Concentric Vent (One Penetration)

Limited

12-Year Heat Exchanger Warranty*

Limited

24/7/365 Technical Support

Limited

why tankless