A O Smith VWT 500 User Manual

Commercial Gas Boilers  
VWT-500  
through  
VWT-1000  
TOTAL HOT WATER SUPPLY SYSTEM USING VFBOILERS  
With Ac-U-Temp, A. O. Smith makes it as easy as possible to install a complete packaged hot  
water supply system, combining high-efficiency VFboilers with storage tanks up to 10,000  
gallons. Each Ac-U-Temp system is custom-made to your specifications for each application  
and shipped fully assembled, pre-piped and pre-wired. All the installer has to do is make the  
flue, gas, electrical and water connections, so installations are easy.  
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.  
VF MODULATING BOILERS  
UP TO 88% THERMAL EFFICIENCY  
• A. O. Smith’s most efficient hot water supply boilers  
• Available inputs: 500,000, 750,000, 1,000,000 BTUs  
• Flexible conventional-vent or sealed-combustion  
direct-vent options  
• For complete information on VF Hot Water Supply  
Boilers, consult VF Specification Sheet  
GLASS-LINED STORAGE TANKS  
• Standard capacities up to 1,000 gallons  
• Custom tanks available up to 10,000 gallons  
• Standard tanks are factory jacketed and insulated –  
bare uninsulated tanks also available  
• Optional cement or epoxy-lined tanks available  
• For complete information on standard and optional  
tanks, consult tank Specification Sheet  
MULTIPLE BOILER SYSTEMS  
• Ac-U-Temp systems can be designed with multiple  
boilers to provide 50% to 100% back-up  
• Multi-boiler systems can be sequenced to meet  
changing system demands  
• Sequenced multi-boiler systems with small storage  
tanks are ideal for applications with relatively constant  
hot water demands  
• Optional sequenced control panel available  
MULTIPLE TANK SYSTEMS  
• Ac-U-Temp systems can be designed with multiple  
tanks for applications with low ceiling heights or other  
unique installation challenges  
Page 1 of 4  
ACMSS00507  
July 2007R  
Commercial Gas Boilers  
TOTAL HOT WATER SUPPLY SYSTEM USING VFBOILERS  
Configuration H  
Configuration P  
Configuration V  
The above are standard available configurations. Custom configurations designed to your specifications are available. Contact your local  
A. O. Smith Sales Representative for assistance.  
Page 3 of 4  
ACMSS00507  
Commercial Gas Boilers  
TOTAL HOT WATER SUPPLY SYSTEM USING VFBOILERS  
OTHER FEATURES:  
DUAL-ENERGY SOURCE OPTION  
ASME TEMPERATURE AND PRESSURE RELIEF  
VALVE #125  
• Storage tanks can be specified with an optional  
heat exchanger for winter heating using on-site  
hydronic heating boiler(s), switching to domestic  
hot water boiler(s) for summertime operation  
TANK TEMPERATURE SENSOR AND  
THERMOMETER  
ISOLATION VALVES (BALL VALVES)  
125 PSI TANK WORKING PRESSURE  
ALL-BRONZE CIRCULATING PUMP  
LARGE SYSTEMS SHIPPED WITH SPLIT/  
BOLT TOGETHER SKIDS FOR EASE OF  
SHIPPING AND INSTALLATION  
• Water-to-water or steam-to-water heat exchangers  
available in single-wall or double-wall design  
• Complete control packages can be factory-installed  
for “hook up and run” simplicity  
PROFESSIONAL START-UP SERVICE FURNISHED  
Assures optimum performance for each installation  
OTHER OPTIONS:  
150 AND 160 PSI TANK WORKING PRESSURES  
11˝ X 15˝ MANHOLES  
MEETS ASHRAE/IESNA 90.1-1999  
5 YEAR VF BOILER HEAT EXCHANGER WARRANTY  
5 YEAR STORAGE TANK WARRANTY  
For complete information, consult written warranty or  
contact A. O. Smith  
Tank Type (A=Skid Mounted, J=Jacketed, V=Vertical, H= Horizontal)  
SUGGESTED SPECIFICATION  
Hot Water Supply System - shall consist of A. O. SMITH Ac-U-Temp factory assembled unit Model No. __________. System  
shall be completely factory assembled and shall include the A.O. SMITH VF hot water supply boiler(s), with input  
of ____ BTU/H for (natural/propane) ____ gas and recovery capacity of _______ gph, and the A.O. SMITH glass-lined  
(cement/epoxy) hot water storage tank with ____ gallons capacity for ________ mounting (vertical-horizontal). System  
shall include properly sized circulator, inlet and outlet thermometers, tank temperature thermometer, relief valve, and tank  
temperature control. Entire system shall be rigidly mounted on welded steel skid base and shipped assembled to job site  
(Ac-U-Temp systems employing tanks too large for shipping as an assembled unit, will be shipped with the tank mounted  
on a split bolt-together skid). See VF Boiler Specification Sheet for boiler details. See A.O.Smith Storage Specification  
sheets for storage tank details.  
Hot water supply boiler(s) and storage tank(s) shall have a 5 year limited warranty against corrosion as outlined in the  
written warranty  
For Technical Information and Automated Fax Service, call 800-527-1953.  
A. O. Smith reserves the right to make product changes or improvements without prior notice.  
500 Tennessee Waltz Pkwy, Ashland City, TN 37015  
Page 4 of 4  
ACMSS00507  
©2007 A. O. Smith Corporation  
Printed in U.S.A.  

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