1. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us TANKLESS WATER HEATING TECHNOLOGY For Commercial Applications

2. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Why tankless water heaters? Building a case for tankless: The key factors that are important:  Energy Efficiency  Unlimited Hot Water  Cost – Capital & Operating  Commercial vs. Residential  ROI  Sizing & Piping  Redundancy  Code Alert  Modulation  Lifespan  Warranty

3. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Rinnai’s Global Presence Based in Nagoya, Japan Established in 1920 7000 employees worldwide Operates in over 43 countries RINNAI GLOBAL HEADQUARTERS Worldwide Leader 2010 turnover: $3+ Billion RINNAI’S GLOBAL PRESENCE

4. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Rinnai North America North American Headquarters: Peachtree City, GA Over 200 direct employees & representatives RINNAI AMERICA HEADQUARTERS Rinnai NA has its own CSA certified testing laboratory

5. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Rinnai America’s Heating Solutions Non-Condensing Tankless Water Heaters EnergySaver ® Direct Vent Furnaces Hydronic Furnaces Commercial Cooking products Condensing Hydronic Boilers Condensing Tankless Water Heaters Rinnai North America Products

6. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Basic Requirements  Gas Delivery pressures range from:  5” wc – 10.5” wc for natural gas  8” wc – 13.5” wc for propane  Water pressures requirements:  20 psig – 150 psig (50 psi recommended)  Hot & Cold water supply lines to be minimum ¾” piping.

7. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us 1.Water flow begins 2.Ignition Sequence 3. Normal Operation 4. Shut-down Sequence 5.Standby Mode PCB / Surge Protector Water Flow Sensor Combustion Fan SV3 SV4 SV0 or SV Main Modulating Gas Valve/POV SV1 Water flow control valve Out going Temperature Thermistor Incoming Air Exhaust Bypass Sequence of Operation Igniter FR 2 FR 1 SV2 Condensate Trap Secondary Heat Exchanger Primary Heat Exchanger Heat Exchanger Thermistor Burner Sensor

8. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Types of Applications  RESIDENTIAL  APARTMENTS/CONDOS  HOUSING AUTHORITES  FOODSERVICE  HOSPITALITY  HEALTHCARE  SCHOOLS  GOVERNMENT / MILITARY  CAR WASH  LAUNDROMATS  HAIR SALONS  FITNESS CENTERS

9. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us THE BASICS Four important factors when sizing tankless units:  Incoming ground water temperature  Hot water demand  Altitude  Gas line size

10. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us ∆T Temperature Rise (°F) Water Flow (gpm) Understanding Maximum Flow Rate EXAMPLE (from previous page) Incoming water = 57° Rinnai Set-Point temperature = 120°  Subtract the incoming ground water temperature from the water heater’s set temperature for ∆T 120° - 57° = 63  The maximum GPM flow rate for any given ∆T can be found at the intersecting points along each model’s specific flow curve  A GPM flow test from the temperature controller can verify each unit’s performance RC98i/e Flow Curve Flow curves of each model are listed in each installation manual 63 If incoming water is 57° and requested temperature is 120°, ∆T is 63° and gpm flow rate is 6.0 gpm

11. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us RC Series Maximum Flow Curves RC98i/e RC80i/e ModelsRC98RC80 Max. Btu199,000157,000  T(°F) GPM 1402.72.1 1352.82.2 1302.92.3 1253.02.4 1203.22.5 1153.32.6 1103.42.7 1053.62.8 1003.83.0 954.03.1 904.23.3 854.43.5 804.73.7 755.04.0 705.44.3 655.84.6 606.35.0 556.95.4 507.66.0 458.46.6 409.57.5 ≤359.88.0

12. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us SIZING METHODS – Definitions Four methods used to sized tankless units: FLOW RATE (GPM) GPH REQUIREMENTS (GPH) WATER SUPPLY FIXTURE UNITS (WSFU) TANK WATER HEATER REPLACEMENTS

13. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us PIPING DESIGN LAYOUT

14. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us `` ` Gas Supply Cold Water Supply Mixing Valve Domestic Hot Water Evaporator Coil ` Matched Component System Easy, Flexible Installation Comfortable Hydronic Heat Heat Your Air as Efficiently as Your Water. Domestic Hot Water Priority System Hydronic Furnace

15. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Rinnai Concentric Venting

16. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us 16 Vent Termination Requirements 36” (.91 m) to ventilated or unventilated soffit or eve vent; or to a deck or porch* 12” (.30 m) to an inside corner* 12” (30 cm) between Rinnai terminals at the same level 60” (1.52m) between Rinnai terminals at different levels 60” (1.52m) vertically between Rinnai terminals (Also applies to HPe models) 2 inches between outdoor units at the same level

17. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Why choose a Rinnai Tankless? Rinnai offers the most comprehensive warranty:

18. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Application Example

19. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Sizing Report

20. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Sizing Report

21. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us Application Example

22. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us EXISITING EQUIPMENT: 2 - PVI boilers (model: 800P 250A-PV) operating at 120°-125° for their domestic hot water to the rooms 1 - Bradford White tank (model: EF100T150E3N2) zoned for the kitchen / laundry demand operating at 175°-185°. Application Example

23. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us ESTIMATED CAPITAL & OPERATING SAVINGS WITH RINNAI: YEAR 1 Equipment saving: $43,144 Energy savings:$10,446 TOTAL SAVINGS $53,590 CAPITAL COST: Replace existing PVI / Bradford White System: $88,500 Replace with Rinnai System: $45,356 Savings if using Rinnai System:$43,144 Application Example

24. www.rinnai.uswww.rinnai.us © 2011 Rinnai America Corporation engineering@rinnai.usengineering@rinnai.us CONTACT INFORMATION CAN WE HELP PROVIDE YOU A RINNAI SOLUTION FOR YOUR NEXT PROJECT? Rinnai will size your project and provide you a Commercial Sizing Report with Piping Diagram back to you within 48 hours and Free of charge. Please contact us at:. Rinnai Corporation 1-800-621-9419 ext. 6 engineering@rinnai.us 103 International Drive Peachtree City, GA 30269