A.O. Smith VF Series - Manual (Page 4)

Versatile Multi-Venting Configurations
Hot Water Supply
Applications:
VW-500 through
VW -1000
Hydronic Heating
Applications:
VB-500 through
VB -1000
COMMERCIAL GAS BOILERS
CATEGORY IV LISTED
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
Warranty on VW Models
■ 10 Year Limited Heat Exchanger Warranty
on VB Models
VF ™ BOILER APPROVED OPTIONS*
*For optional boiler equipment see VF Boiler VB and V W spec sheets.
Up To 88% Efficient,
Hot Water Supply
Boiler with
Modulating Fire
4:1 Turndown
■ 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
■ Standard - venting, vertical or horizontal sidewall
100 Equivalent Feet Max
90 Degree Elbows = 10 Feet
45 Degree Elbows = 5 Feet
Boot Tee = 5 Feet
DIRECT-VENTING
SIDEWALL CONVENTIONAL
VENTING VENTING
Please consult latest edition
of the Installation Manual for
detail venting information
and maximum/minimum
venting distances.
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