VF ™ Series Boiler

1. VF™ Series Boiler

2. Introducing the 88% Efficient Modulating VF Boilers The Art Of Flexibility

3. The VF Series is designed with one thing in mind: to provide the best value to the customer • The most system-forgiving copper boiler ever to carry the A. O. Smith name - thanks to the unit’s ability to modulate its burner and control BTU output

4. VF Series Boilers – Features • Up to 88% efficiency with fully modulating burner 4:1 turndown for lower operating costs and efficient system operation

5. VF Series Boilers – Features • Inputs from 500,000 to 1,000,000 BTU to meet a wide range of water heating or hydronic applications • Available Models: • Hot Water Supply • VW 500 • VW 750 • VW 1000 • Hydronic Heating • VB 500 • VB 750 • VB 1000

6. VF Series Boilers – Features • Advanced Digital Control System for accurate temperature control and easy diagnostics • Displays current boiler status • Boiler fault read-out • Help screens if needed • Controls every electrical boiler function from ignition to pump operation

7. VF Series Boilers – Features • Compact design and venting flexibility for installation versatility

8. VF Series Boilers – Features • Heavy duty copper finned tube heat exchanger for superior performance and reliability

9. VF Series Boilers – Features • Venturi-mixing gas/air ratio system precisely mixes air and gas for optimum performance

10. VF Boilers – Standard Features • Professional start-up service included • Meets ASME CSD-1 standard • Meets ASHRAE/IESNA 90.1-1999 • Low-NOx Operation • Meets or exceeds Texas and California SCAQMD Rule 1146.2 quality standards

11. VF Boilers – Standard Features • ASME Pressure Relief Valve • Factory-Mounted Flow Switch • Low Gas Pressure Switch • All bronze factory mounted pump • Standard on VW models, optional on VB models • Digital Inlet/Outlet Temperature Readout • Manual Reset Hi-Limit

12. VF Boilers – Warranties • 5-Year Limited Heat Exchanger Warranty on VW Models • 10-Year Limited Heat Exchanger Warranty on VB Models

13. Let’s Take A Closer Look…

14. High Efficiency up to 88% • Marked improvement in overall system efficiency due to reduced energy-wasting short cycling • Smoother overall system operation due to reduced wide temperature swings

15. Modulating Burner • Capable of firing from 100% to 25% or a 4:1 turndown ratio of rated input based on the current heating demand • Virtually limitless modulating capability • Output based strictly on the current system demand and required BTUs needed to maintain the desired system set point temperature

16. Modulating Burner • Prevents energy-stealing short cycling • Provides smoother system operation and higher overall system efficiencies • Modular systems with multiple VF units will see even larger turndowns • 2 boilers = 8:1 turndown • 3 boilers = 12:1 turndown • 4 boilers = 16:1 turndown 4,000,000 BTUs Total footprint: 10’ x 6’

17. Advanced EMC-5000 Modulating Control • Helps you control every boiler function: • Prevents energy-stealing short cycling • Starting the blower • Igniting and modulation of the main burner • Controlling boiler temperature • Boiler pump operation

18. Advanced EMC-5000 Modulating Control • Comprehensive LED displays temperature and current boiler status in easy-to-read text • Precise temperature management of ±1ºF • Self-diagnostics eliminate guesswork, pinpoint problems for troubleshooting. • Help screens assist with initial boiler set-up and troubleshooting if needed

19. Heat Exchanger • The entire heat exchanger is ASME code approved and inspected with a maximum pressure rating of 160 PSI

20. Heat Exchanger • Unique AL29-4C stainless steel corrosion proof combustion chamber/flue collection system assures only copper fin tubing is exposed to the products of combustion • Vertical straight tube multi-pass heat exchanger design encircles the burner with a combustion chamber that is a 360º wall copper fin tubes • Maximum heat transfer is achieved as all hot flue gases are forced through this near solid wall of copper fin tubing

21. Heat Exchanger • All key and serviceable heat exchanger components are outside the combustion chamber and flue collection system– a distinct advantage over the competition • This design feature allows components to be: • Protected from the flame and harsh flue gas • More readily accessible for service • Provides additional years of worry-free operation with reduced service requirements

22. Combustion System • Uses state of the art venturi-mixing gas/air ratio system with variable speed blower • Advanced combustion system design precisely mixes air and gas prior to ignition for optimum performance • Meets SCAQMD Rule 1146.2 approved for California and Texas

23. Combustion System • The VF’s venturi-mixing system combined with its 360º metal fiber burner provides: • Smooth burner light off • Consistent heat distribution and reliable performance under all conditions • Quiet burner operation • Low NOx ratings– meets or exceeds the most stringent air quality standards • Clean air and Green building friendly

24. Small Footprint • The VF’s vertical straight tube design: • Allows for a large heat transfer area to maximize efficiency • Maintains a small footprint of 30˝ X 30˝ – ideal for retrofit applications and multiple boiler installations • Fits easily into an elevator for non-ground-floor boiler room applications • Can be easily handled with a standard appliance dolly

25. Small Footprint • Certified with 0˝ clearance to both right and left sides, allowing multiple units to sit side by side while using as little floor space as possible • Provides the power needed to meet the most demanding commercial hydronic heating needs or commercial domestic hot water heating requirements–all within a space that other types of boilers would never fit

26. Flexible Venting & Direct Vent Options Note: All modes use 4˝ PVC combustion air intake piping and 6˝ AL29-4C venting material

27. Four Direct-Vent Configurations • Gives the Specifier and Installer optimum venting flexibility • Safe, two-vent system allows clean, uncontaminated air to be drawn directly into the unit • Can save substantial installation costs when standard venting configurations are not practical Note: All modes use 4˝ PVC combustion air intake piping and 6˝ AL29-4C venting material

28. Sidewall or Vertical Vent Configurations • Using boiler room air for combustion and venting either vertical or horizontal is ideal for retrofit and cost-saving installations Note: All modes use 4˝ PVC combustion air intake piping and 6˝ AL29-4C venting material

29. Service • Easy access for servicing the new VF unit was a major design concern • All serviceable parts are accessible from the front of the boiler • Service access panels or doors provide ample room to get the job done

30. Ac-U-Temp SystemsA Total Hot Water Supply System Using VF Series Boilers • Install a complete packaged hot water supply system, combining 88% efficient VF Series Boilers with A. O. Smith storage tanks. Systems available: • Up to 1,000 gallons • Built to order • Factory engineered and pre-assembled to your specifications • Fully assembled, pre-piped and pre-wired–all the installer has to do is make the flue, gas, electrical and water connections

31. Ac-U-Temp SystemsA Total Hot Water Supply System Using VF Series Boilers • Standard boiler and tank configurations using tanks up to 1,000 gallons OR… • We can CUSTOM DESIGN an Ac-U-Temp System with tanks up to 10,000 gallons

32. Up to 88% Efficient with Modulating Fire 4:1 Turndown The Art Of Flexibility