A.O. Smith VB/VW- 750, homeappliance

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The Art Of Flexibility The new VF Series variable fire copper boilers are designed with one thing in mind: to provide the best value to the customer. As a result, we're proud to introduce a more installation friendly line that works well in more applications and requires less maintenance. The secret to the stunning performance of the VF Series is its flexibility. The VF is capable of firing from 100% to 25% or a 4:1 turndown ratio. The boiler's output is based strictly on the current system demand and required BTUs needed to maintain the desired system set point temperature. The VF's modulating capability is virtually limitless. The VF Boiler sets a high efficiency standard by combining thermal efficiencies up to 88% with a smoother, more energy -efficient overall system operation. THE ANATOMY OF GREAT PERFORMANCE A E Combustion air intake – self adjusting-no air shutter required B EMC-5000 Modulating Control C Advanced pre-mix burner design precisely mixes air and gas prior to ignition for optimum performance, with low-NOx emissions (meets SCAQMD Rule 1146.2) D All non-heating surface heat exchanger compo B E A D C G F Venturi-mixing gas/air ratio system works with variable speed blower to precisely mix gas and air throughout firing range, provides good operation with supply gas pressures down to 4˝ WC, and is self-adjusting for altitudes up to 6,000 feet all while providing low NOx emissions that meet or exceed the most stringent standards F Heavy-duty ASME 160 psi copper finned tube heat exchanger—Vertical, straight tube, multi-pass design surrounds the burner with a 360° wall of copper finned tubing, making the entire heat exchanger immune to thermal shock G nents are outside and away from the combustion and flue collection areas; only the copper fin tubes are exposed to the products of combustion D The sealed heat exchanger flue collection system is constructed of AL29-4C stainless steel that is immune to corrosive flue gases COMMERCIAL GAS BOILERS CATEGORY IV LISTED Up To 88% Efficient, Hot Water Supply Boiler with Modulating Fire 4:1 Turndown Hot Water Supply Applications: VW-500 through VW-1000 Hydronic Heating Applications: VB-500 through VB -1000 PROFESSIONAL START-UP SERVICE FURNISHED MEETS ASHRAE/IESNA 90.1-1999 LOW NOx OPERATION ■ Meets or exceeds Texas and California SCAQMD Rule 1146.2 quality standards OTHER VF™ BOILER FEATURES: ■ ASME Pressure Relief Valve 125# ■ Factory-Mounted Flow Switch ■ Low Gas Pressure Switch ■ All Bronze Factory Mounted Pump Standard on VW hot water supply models ■ Digital Inlet/Outlet Temperature Read Out ■ Manual Reset Hi-Limit WARRANTY: ■ 5 Year Limited Heat Exchanger S Warranty on VW Models H O ■ 10 Year Limited Heat Exchanger Warranty R on VB Models T VF ™ BOILER APPROVED OPTIONS* T R *For optional boiler equipment see VF Boiler VB and VW spec sheets. I M Versatile Multi-Venting Configurations ■ Two-pipe direct- venting vertical and /or horizontal sidewall, with all combustion makeup air drawn from outside the building 70 Equivalent Feet Exhaust 70 Equivalent Feet Intake 90 Degree Elbows = 10 Feet 45 Degree Elbows = 5 Feet Boot Tee = 5 Feet DIRECT-VENTING ■ Standard- venting, vertical or horizontal sidewall 100 Equivalent Feet Max 90 Degree Elbows = 10 Feet 45 Degree Elbows = 5 Feet Boot Tee = 5 Feet SIDEWALL CONVENTIONAL VENTING VENTING Please consult latest edition of the Installation Manual for detail venting information and maximum/minimum venting distances. Advanced EMC-5000 Modulating Control The EMC-5000 Modulating Control provides true self-diagnostic capabilities to eliminate guesswork in troubleshooting. It is the most advanced boiler control we have ever offered, setting a new standard for copper boilers. EMC-5000 Modulating Control ■ Modulates the boiler to maintain tank temperature within +/- 1 degree ■ Infinite boiler output control between 100% to 25% fire ■ LED read out – provides current boiler status in plain English with help screens to assist should a fault occur ■ Controls and monitors every electrical boiler function with M I onboard diagnostics R T T R O H S Small Size And Easy Service Small Footprints, Zero Clearance To Combustibles On Sides of Unit ■ Compact design, lightweight copper heat exchanger makes VF Series easier to move and install in limited spaces – perfect for retrofits ■ Fits in an elevator, ideal for boiler rooms with limited access— only 30˝ wide ■ Multiple boiler systems provide increased turndown and even smoother, more efficient system operation ■ 4 boilers w/4:1 Turndown =16:1 total system turndown Model Input Rating Output Rating Gallons Per Hour Recovery Height Width Depth W/ Depth W/O Approx. No. Btu/hr Btu/hr Temperature Rise -°F Inches Inches Pump Pump Shipping Inches Inches Weight (Lbs.) 40 100 140 VW/ VB-500 500,000 421,500 1,268 507 362 56 30 37.5 30 450 VW/ VB-750 750,000 633,750 1,901 761 543 62 30 37.5 30 575 VW/ VB-1000 1,000,000 845,000 2,535 1,014 724 71 30 37.5 30 750 Ac-U-Temp — A total hot water supply system using VF Series Boilers With Ac-U-Temp, A. O. Smith makes it as easy as possible to install a complete packaged hot water supply system, combining 88% efficient VF Series Boilers with A. O. Smith storage tanks. A. O. Smith offers a wide range of available boiler/storage tank combinations using the Ac-U-Temp system. There are a number of standard boiler and tank configurations with tanks up to 1,000 gallons, or we can custom design and build an Ac-U-Temp system with tanks up to 10,000 gallons to meet your specifications and application requirements. Ac-U-Temp systems are shipped fully assembled, pre-piped and pre-wired. All the installer has to do is make the flue, gas, electrical and water connections, so field errors are minimized. Examples of Ac-U-Temp Systems Consult your A. O. Smith representative for more information on the wide range of available boiler/storage tank combinations using the Ac-U-Temp system. For complete specifications on the VF Series, consult the specification sheets at www.hotwater.com or contact your local A. O. Smith sales representative. 500 Tennessee Waltz Parkway • Ashland City, TN 37015 www.hotwater.com ACGBR00307 ©2007 A. O. Smith Corporation A. O. Smith reserves the right to make product changes or improvements at any time without notice. Printed in U.S.A