A.O. Smith VW-500, VW-750 Bedienungsanleitung

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.

Combustion

air intake – self

adjusting-no air

shutter required

EMC-5000

Modulating Control

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)

All non-heating

surface heat

exchanger compo-

nents areoutside

and away from the

combustion and flue

collection areas;

only the copper fin

tubes are exposed

to the products of

combustion

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

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

The sealed heat

exchanger flue collection

system is constructed

of AL29-4C stainless

steel that is immune

to corrosive flue gases

A E

THE ANATOMY OF GREAT PERFORMANCE

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:

■5Year 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.

SHORTTRIM

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.

Advanced EMC-5000 Modulating Control

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

■4boilers w/4:1 Turndown

6:1 total system turndown

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

afault occur

■Controls and monitors every

electrical boiler function with

onboard diagnostics

SHORTTRIM

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.

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

Examples of

Ac-U-Temp

Systems

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