VF Series Boiler

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VF Series Boiler
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The Art Of Flexibility
Introducing the 88 Efficient Modulating VF
Boilers
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• 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 units
  ability to modulate its burner and control BTU
  output

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VF Series Boilers Features

• Up to 88 efficiency with fully modulating burner
  41 turndown for lower operating costs and
  efficient system operation

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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

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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

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VF Series Boilers Features

• Compact design and venting flexibility for
  installation versatility

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VF Series Boilers Features

• Heavy duty copper finned tube heat exchanger for
  superior performance and reliability

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VF Series Boilers Features

• Venturi-mixing gas/air ratio system precisely
  mixes air and gas for optimum performance

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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

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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

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VF Boilers Warranties

• 5-Year Limited Heat Exchanger Warranty on VW
  Models
• 10-Year Limited Heat Exchanger Warranty on VB
  Models

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Lets Take A Closer Look
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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

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Modulating Burner

• Capable of firing from 100 to 25 or a 41
  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

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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 81 turndown
• 3 boilers 121 turndown
• 4 boilers 161 turndown

4,000,000 BTUs Total footprint 10 x 6
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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

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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

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Heat Exchanger

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

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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

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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

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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

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Combustion System

• The VFs 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

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Small Footprint

• The VFs 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

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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
  requirementsall within a space that other types
  of boilers would never fit

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Flexible Venting Direct Vent Options
Note All modes use 4? PVC combustion air intake
piping and 6? AL29-4C venting material
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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
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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
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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

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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-wiredall the
  installer has to do is make the flue, gas,
  electrical and water connections

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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

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The Art Of Flexibility
Up to 88 Efficient with Modulating Fire 41
Turndown
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