® Domestic Hot Water Boilers
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VW-500 |
HOT WATER SUPPLY BOILERS |
through |
VW-2000 |
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FEATURES |
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The VF™ Boiler series delivers an exceptionally high thermal efficiency by combining an advanced modulating venturi-mixing gas/air ratio system with a vertical multi-pass copper heat exchanger for outstanding efficiency of up to 88% and low NOx emissions that meet or exceed the most stringent standards.
The VF™ Boiler is capable of firing from 100% to 25% or a 4:1 turndown ratio of rated input based on the current system demand. The VF’s modulating capability is virtually limitless, and the boiler’s output is based strictly on the current system demand and the required BTUs needed to maintain the desired system set point temperature.
ADVANCED HIGH EFFICIENCY, LOW NOx COMBUSTION TECHNOLOGY
■Venturi-mixing gas/air ratio system - Works with variable speed blower to precisely mix gas and air throughout firing range.
■4:1 Turndown - Fully modulating capability prevents energy-stealing short cycling and provides smooth system operation with higher overall system efficiencies
LOW NOx OPERATION
■Complies with SCAQMD Rule 1146.2 and other Air Quality Management Districts with similar requirements for low NOx emissions
ADVANCED MODULATING CONTROL
■Includes remote tank temperature control to adjust tank temperature at the boiler - Modulates the boiler to maintain tank set point temperature within +/-1 degree
■Infinite boiler output control between 25% and 100% fire
■LED read out - Provides current boiler status in plain English with help screens to assist should a fault occur
■Controls every electrical boiler function and provides on board diagnostics
■iCOMM™ Compatible and can be monitored from remote locations. Call 1.888.WATER02 for more information.
ALL BRONZE FACTORY MOUNTED PUMP
■Integrally mounted, wired, and controlled by the boiler control
■Factory-sized for proper flow between boiler and storage tank
■Allows 50 equivalent feet of piping between boiler and tank
HIGH EFFICIENCY COPPER FIN TUBE HEAT EXCHANGER
■Vertical straight tube 2 or 4 pass heat exchanger design encircles the burner with a combustion chamber that is a 360° wall of copper fin tubes
■Rust-resistant operation - All internal heat exchanger non-copper surfaces are
glasslined with A. O. Smith’s proprietary porcelain glass coating, which far exceeds competitive coatings
■ Impervious to thermal shock
COMPACT, LOW-PROFILE DESIGN
■ Zero clearance on sides for 500-1000 models, 4 inches on sides for 1500-2000 models ■ Ideal for multiple boiler installations
STANDARD VENT OR DIRECT VENT FLEXIBILITY
■ Standard vent configuration, vertical or horizontal sidewall
■ Two-pipe direct venting vertical and/or horizontal sidewall, with all combustion makeup air drawn from outside the building
FACTORY START-UP INCLUDED
■ Required for activating warranty and assuring
maximum operating performance. Contact your local sales representative or Authorized Start-Up Agent to arrange a FREE Certified Start-Up.
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Page 1 of 4 |
Revised September 2010 |
AOSDG25000 |
® Domestic Hot Water Boilers
CATEGORY IV LISTED
■Requires AL29-4C gas tight rust resistant venting material
PROFESSIONAL START-UP SERVICE INCLUDED
■Assures optimum performance for each installation
MEETS THE THERMAL EFFICIENCY AND STANDBY
LOSS REQUIREMENTS OF THE U. S. DEPARTMENT
OF ENERGY AND CURRENT EDITION ASHRAE/
IESNA 90.1
5-YEAR HEAT EXCHANGER WARRANTY
■For complete information, consult written warranty or contact A. O. Smith
OTHER VF™ BOILER FEATURES:
■ASME 160# W.P.
■ASME RATED PRESSURE RELIEF VALVE, 125 PSI.
■FACTORY MOUNTED FLOW SWITCH
■MEETS CSD-1 CODE-–FACTORY STANDARD
■BRASS DRAIN VALVE
■LOW GAS PRESSURE SWITCH
■DIGITAL INLET/OUTLET TEMPERATURE READOUT
■MANUAL RESET HI-LIMIT
■ALL BRONZE FACTORY MOUNTED PUMP
VF™ BOILER APPROVED OPTIONS:
SEQUENCING PANEL
ALARM BUZZER
SIDEWALL VENT KITS
VERTICAL AND HORIZONTAL DIRECT VENT KITS
SKID-MOUNTED SYSTEMS
DRY CONTACTS FOR ANY BOILER FAILURE
LOW WATER CUTOFF
LP GAS
CUPRO-NICKEL HEAT
EXCHANGER TUBES
ENERGY MANAGEMENT
INTERFACE ADAPTER (BacNet, Lowworks, for other contact Factory)
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Input |
Water |
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Temperature Rise - °F (°C) |
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Model |
Rating |
Flow |
40 |
60 |
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80 |
90 |
100 |
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120 |
140 |
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BTU/Hr. |
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(22) |
(33) |
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(44) |
(90) |
(56) |
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(67) |
(78) |
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VW-500 |
500,000 |
GPH |
1,268 |
845 |
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634 |
563 |
507 |
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423 |
362 |
LPH |
4,797 |
3,198 |
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2,399 |
2,132 |
1,919 |
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1,599 |
1,371 |
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VW-750 |
750,000 |
GPH |
1,901 |
1,268 |
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951 |
845 |
761 |
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634 |
543 |
LPH |
7,196 |
4,797 |
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3,598 |
3,198 |
2,878 |
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2,399 |
2,056 |
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VW-1000 |
1,000,000 |
GPH |
2,535 |
1,690 |
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1,268 |
1,127 |
1,014 |
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845 |
724 |
LPH |
9,595 |
6,397 |
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4,797 |
4,264 |
3,838 |
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3,198 |
2,741 |
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VW-1500 |
1,500,000 |
GPH |
3,780 |
2,520 |
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1,890 |
1,680 |
1,512 |
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1,260 |
1,080 |
LPH |
14,307 |
9,538 |
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7,154 |
6,359 |
5,723 |
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4,769 |
4,088 |
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VW-2000 |
2,000,000 |
GPH |
5,040 |
3,360 |
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2,520 |
2,240 |
2,016 |
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1,680 |
1,440 |
LPH |
19,076 |
12,718 |
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9,538 |
8,478 |
7,631 |
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6,359 |
5,450 |
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Note: Maximum gas supply pressure: 13.8˝ W.C. natural gas, 13.8˝ propane
Minimum gas supply pressure: 4˝ W.C. natural gas, 8˝ propane
Electrical Power: 120 Volts, 60 Hertz, 30 Amps..
For Technical Information and Automated Fax Service, call 800-527-1953. A. O. Smith Corporation reserves the right to make product changes or improvements without prior notice.
Revised September 2010 |
Page 2 of 4 |
www.hotwater.com |
AOSDG25000 |
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