User manual | totally renewable heat source

Outdoor Wood Furnace

TOTALLY RENEWABLE HEAT SOURCE

The most advanced, eﬃ cient outdoor wood furnace on the market today.

Look for exclusive E-Classic features.

CentralBoiler.com

Welcome to the best way to heat with wood.

Welcome to Central Boiler.

Your reasons for heating with wood are likely the same reasons

Central Boiler was founded in 1984. But rather than just develop another way to heat with wood, Central Boiler set out to develop

better ways to heat with wood

. They dared ask the tough questions: can heating with wood be

safer, less time-consuming, cleaner and more eﬃ cient

? Today, with those questions still in mind, and a goal of continuous improvement and refi nement, Central Boiler is the largest manufacturer in North America of the best-selling, industryleading outdoor wood furnaces available.

PEACE OF MIND Keep the fi re outside and it eliminates the traditional indoor wood stove hazards. Burning wood indoors is inherently dangerous as there is a threat of a fi re and carbon monoxide buildup.

IMPROVED INDOOR ENVIRONMENT The mess stays outside with a Central Boiler outdoor wood furnace.

Anyone that has burned wood inside is familiar with the smoke, ashes, odors and soot that often occur. In addition, bringing wood indoors can bring unwanted bugs, bark and dirt.

FREEDOM TO DO MORE Those that choose to heat with wood often do so because of the cost savings.

With a Central Boiler outdoor wood furnace, it can take less wood to heat more space, so no matter what your costs and time are associated with acquiring your wood supply, using less wood means you’ll have more time (plus save more money!) to do other things.

STABILITY Wood is usually sourced locally.

Conventional heat sources like propane, natural gas and fuel oil will always be susceptible to price fl uctuations and are irreplaceable fossil fuels.

Historically, the price of electricity trends only upward.

SUSTAINABILITY Harvesting wood with sustainable forestry practices helps to maintain a healthy ecosystem for wildlife habitats, aesthetics, soil and water quality, native biological diversity, recreational opportunities and fi re prevention.

What do you currently pay for heat?

Cost per cord of seasoned red oak

Cost for fuel oil

Cost for one therm of natural gas one gallon of propane

Cost per

kilowatt of

electricity

Cost per 100 million Btu x x x x x

6.61

892.9

1250

1359

29300

Cost of fuel annually

Appliance efficiency will affect annual fuel cost.

Water heater savings up to an additional $1200 per year.

“It’s the right thing to do!”

PRESERVES WILDLIFE HABITAT SOIL AND WATER QUALITY

Harvesting wood has a pruning eff ect on forests – planting new trees ensures wildlife will have a healthy habitat.

Reforestation reduces erosion risks and protects watersheds that are a source of the water we drink and use.

AESTHETICS AND RECREATION

Sustainable forestry makes more room for new and healthier growth through reforestation.

REDUCES FOREST FIRES

By harvesting old and dead trees that can easily burn, it can significantly reduce the risks of costly wildfires.

Installing your Central Boiler outdoor furnace is easier than you might think. Many customers choose to install their own furnace because the installation can be easily completed using the installation manual. Authorized Central Boiler dealers have all the supplies and accessories you need for installation and maintenance. All of our dealers can provide you with information regarding your installation, and most dealers can even handle the entire installation for you.

Sophisticated, yet simple.

How a Central Boiler outdoor wood furnace works.

While a Central Boiler outdoor wood furnace is one of the most sophisticated, technologically advanced ways to heat with wood, how it heats is a pretty simple idea. A Central Boiler outdoor wood furnace burns wood to heat water. The heated water is circulated through insulated underground pipes called ThermoPEX to the buildings being heated. Heated water can transfer its heat energy by direct circulation or by moving through one or more heat exchangers, or both.

LOCATION The Central Boiler outdoor wood furnace is located outside, typically 30 to 200 feet (but as far as 500 feet) away.

CIRCULATION The furnace contains a high volume of water that surrounds the furnace firebox and heat exchanger. This heated water is circulated to buildings through insulated underground pipes which is a highly efficient way to move heat over distances.

INTEGRATION Central Boiler outdoor wood furnaces are designed to work with your existing heating system. Water-to-air or water-to-water heat exchangers or direct circulation conveys the heat into the structure’s forced-air furnace, radiant baseboard or radiant floor heating system. This allows you to control the heat simply with your thermostat.

UNLIMITED HOT WATER When you install a heat exchanger on your domestic water heater, you can enjoy unlimited hot water and the savings from turning your water heater off.

HEAT MULTIPLE BUILDINGS Unlike an indoor wood stove, a Central Boiler outdoor wood furnace has the ability to heat multiple buildings such as a garage, workshop, shed, greenhouse or barn. It can even be used to heat a swimming pool or hot tub.

Installation is a breeze.

Connect the piping and heat exchangers to your existing heating system and the E-Classic is ready to go to work.

Find additional information about how outdoor furnaces work, installation scenarios, and more at

CentralBoiler.com

Engineered to the highest standards...ours.

Ultimate Control

The

FireStar™ II Electronic Controller

automatically adjusts the primary and secondary air which optimizes the gasifi cation process allowing the furnace to be more effi cient and cleaner burning. It is capable of data collection with the ability to communicate with other devices, and provides the user with easy operation of the furnace with just the touch of a button.

Less Maintenance

The

Xtract® Heat Exchanger

allows you to get the most heat out of your wood. It is designed to optimize the transfer of heat from the extremely hot gases to the water. The vertical design of the heat exchanger allows any small particles in the exhaust to drop to the bottom. They are easy to clean out from the

Reaction

Chamber

. This minimizes the amount of maintenance.

Burns Less Wood

A hallmark of Central Boiler furnaces for over 30 years, spray-on

urethane is the ultimate airtight, waterproof insulation that locks the heat in to reduce wood usage, even at temperatures of -35˚F or colder. It provides 2-3 times the eff ective R-value of conventional fi berglass batt insulation. Fiberglass batt insulation also settles and compresses over time.

Comparing Insulation

Urethane Fiberglass Batt

Waterproof

Airtight

Effectively covers all surfaces

Maintains R value

Higher R value

Doesn’t compress

Performance

Patented

Air Charge Tube

adds air in all the right places to aid in the combustion process and keeps the coal bed from falling through.

Clean Burning

Exclusive

E-Classic features.

Model

E-Classic 3250

Model

E-Classic 3250

High Eﬃ ciency

Final combustion takes place as these gases move downward through the

Fusion Combustor

to the

Reaction Chamber

where extremely high temperatures aid in complete combustion. This entire process results in high effi ciency and extremely low emissions.

Operational Convenience

Bypass Door

allows you to redirect the exhaust before opening the fi rebox door. The

Bypass Door Alarm

reminds you to close the bypass door after you have closed the fi rebox door for effi cient operation of your furnace.

Easy Loading

This

triple insulated fi rebox door

is just the right height and features a large opening for easy loading, making your job much easier. The ergonomically designed, lockable door features a

Cam Loc

door closure that secures the door at all four corners and provides a tight seal each time the door is closed. Its triple insulation keeps the heat in and the cold out for maximum effi ciency.

LED Lights

( Photo Electronic Controlled)

The long-lasting, energy effi cient LED lights save money and enhance safety. They illuminate the inside of the fi rebox and the front and sides of the outdoor furnace and can be set to conveniently, automatically turn on at night.

Easy Ignition Option

The optional

gas-fi red wood ignition

takes the work and worry out of lighting a fi re. With just the push of a button, the power ignition will light the fi re. It will also automatically relight the fi re if needed, even when you are away from home. It is just that easy.

Central Boiler's Research and

Development department is home to one of the most complete state-of-the-art testing laboratory in the industry. Since 1984, its goal has been to develop, engineer, test and refi ne a wide range of quality heating products to ensure

Central Boiler quality, performance and value are in every outdoor furnace manufactured.

Smart features designed with you in mind.

Convenient operation and choices to ﬁ t your lifestyle.

THE MOST ADVANCED FURNACE

The FireStar II electronic controller comes standard on all E-classic models. The FireStar II electronic controller monitors all functions of the furnace and can store and share operational data. The controller’s technology optimizes the gasifi cation process by automatically adjusting the primary and secondary air for a cleaner and more effi cient burn. Operational data can be utilized with a memory card or on the FireStar™ XP module when connected to the FireStar™ II.

EFFICIENCY MEANS MORE HEAT FROM LESS WOOD

Central Boiler E-Classic outdoor furnaces’ energy effi cient designs maximize the combustion and heat transfer process for better heat delivery. In other words, our outdoor furnaces burn more completely and effi ciently, and transfer more of the heat generated to your home.

Current owners of E-Classic outdoor furnaces report that they are using up to 25% to 70% less wood compared to traditional wood furnaces or other brands of outdoor wood furnaces. Indoor wood stoves can be less effi cient because heated indoor air used for combustion is sent out the chimney, causing cold air to be drawn into the house to replace it. Indoor wood stoves can also overheat the room.

BURN WOOD, NOT YOUR SPARE TIME.

Continuous stoking of wood is a necessary part of fi replace and wood stove use. If you don’t have the time or energy to continually babysit these heat sources, a Central Boiler outdoor furnace is your low-maintenance alternative. Since Central Boiler outdoor wood furnaces can burn larger pieces of wood they can dramatically reduce time spent preparing the wood. The large fi rebox door is designed for easy loading of wood and removal of ash.

INSULATED REAR ACCESS PANEL

This panel swings open giving you full access to the Reaction Chamber door, power disconnect and pumps, all from one location.

That makes installation and maintenance convenient and easy. The insulated panel keeps the heat in and the cold out, which preheats the combustion air and makes the furnace more effi cient.

TIME SAVING OPTION

Never start a fi re manually again! The optional Gas-fi red Wood

Ignition Kit is easily installed in minutes without modifi cations and gives you the convenience of easy push-button lighting of the wood with the added convenience of automatic relighting if needed. The propane burner is standard. A natural gas conversion kit is available.

Kit is pre-assembled and easy to install no wiring needed.

Available for all E-Classic Ignition Ready (IR) models, the Gas-fi red

Wood Ignition Kit is available from your Central Boiler dealer.

STAYING CONNECTED

Stay connected to the furnace that saves you money on your heating bills from almost anywhere in the world. Adding the FireStar XP wi-fi module keeps you in constant contact with your Central Boiler furnace if you’re away. The FireStar

XP wi-fi module can send you reminders such as when to add wood.

View operational information on any web enabled device and receive text alerts on your smartphone.

Phone not included.

™

with E-Link Technology

The optional FireStar XP is easy to install and confi gure.

Wireless outdoor version shown.

Also available as desktop or wall-mount version.

Live FireStar XP Demo at CentralBoiler.com

Sample Applications

NOTE

If heating loops are above manifolds, additional controls (e.g. zone valve or flow check) may be needed to prevent ghost flow (see Radiant Heat with

Flow-Check Valve illustration).

For illustration purposes only:

• Water heater styles may vary.

• Size of incoming line may vary

(depending on application).

• Location of thermostat may vary.

Dual Heat System

In-Floor Radiant/Forced Air

Thermostatic

Mixing Valve

Zoning

Pump

Hot Supply

NOTE

4 x Pipe Dia. Max.

(e.g., for 1" pipe, fittings must not be more than 4" apart)

NOTE

A pump must be installed in the hot supply line between the outdoor furnace and thermostatic valve.

Hot Supply from Pump on Outdoor Furnace

Thermostatic Valve

Return to Outdoor Furnace

This horizontal assembly must not exceed a height of 4 inches above top of water heater.

Water-to-Water

Heat Exchanger

Bypass

Line

NOTE

Outdoor furnace water temperature setpoint should be set at 185˚F minimum.

Central

PEX ®

Water

Heater

Optional 3-Way

Bypass Valve

NOTE

Installer must comply with all applicable codes and regulations.

Plenum

Forced Air

Furnace

Greenhouse Applications

Finned

Tube

Supply

Return

Forced Air

OUT

Radiant PEX piping under the table

4 mil. black poly

NOTE

When using mesh style tables - PEX piping must be protected from UV rays.

Heating Multiple Buildings

Multi-Zone In-Floor

Hot Supply from Pump on

Outdoor Furnace

1" Central PEX

Top

View

24-Volt Thermostat

W RH B RC

TIME PRGM RUN HOLD FAN SYSTEM

ON AUTO COOL OFF HEAT

G O Y

1" Copper Piping

R W X X R C

Zoning Pump

NOTE

ON / OFF switch must be in the "ON" position for this install.

Return to Outdoor Furnace

NOTE

Installer must comply with all applicable codes and regulations.

NOTE

Outdoor furnace water temperature setpoint should be set at 185˚F minimum.

Mixing Valve

NOTE

A pump must be installed in the hot supply line between the outdoor furnace and thermostatic valve.

Minimal heat radiated downward

Heating Upper Level

Floor Covering

1/2" Central PEX Piping

Underlayment

Sub Floor

2" Minimum

Insulation

Floor Joist

Sheet Rock

PEX Hangers should be installed every 18".

It is recommended that you maintain a 2" cavity between piping and insulation for best performance.

Top

View

Insulation

1/2" Central PEX Piping is spaced

6" from outside wall. Remaining piping is spaced 12" on center.

Slab

Insulation

Poly Vapor

Barrier

Find more applications at CentralBoiler.com

Insulated Piping System

Choose ThermoPEX. Because performance matters.

Choosing the best insulated piping system for your outdoor furnace is imperative if you want to lower heat loss and reduce the amount of wood you’ll burn. The ThermoPEX insulated piping system from Central Boiler is a proven system that saves energy and maximizes the efficiency of your outdoor furnace.

ENERGY EFFICIENT – ThermoPEX saves energy and maximizes efficiency. The thick waterproof jacket keeps moisture out and the inner urethane insulation locks the heat in. Greater system efficiency maximizes the delivery of heat from each pound of wood so you will burn less wood compared to a system using inferior insulated piping.

FLEXIBILITY – Easy to work with, easy to install.

RELIABILITY – ThermoPEX is a proven, time-tested insulated piping system.

INSTALLS FAST – Easy to handle and easy to install, requiring only a narrow trench approximately a foot deep.

IN A HURRY? Some ThermoPEX can be UPS shipped - see dealer for details.

Central Boiler authorized system parts and accessories

For the maximum performance and life of your outdoor furnace, always insist on using Central

Boiler authorized system parts and accessories.

Your Central Boiler dealer can provide you with a complete selection of parts and accessories to simplify the installation and maintenance of your system.

To locate your nearest dealer for parts, pricing or technical information, use the

Dealer Locator at CentralBoiler.com.

Download the parts and accessories catalog at CentralBoiler.com/pdf/

catalog-parts.pdf

What Central Boiler owners say.

“

Our new Central Boiler system is without a doubt the fi nest wood burning system we have ever had the pleasure of using. The ease of operation, the eﬃ ciency, safety and the end result of a steady, dependable heat source provided by our Central

Boiler stove surpass anything we have encountered in the past 50 years of wood burning as a heat source.

- Justin, MN

”

I installed a Central Boiler 2 years house and heat water for a family of 6. I haven't used a drop of fuel oil since and have even turned off the breaker to the water heater.

”

- Lee, MI

“

I recently bought an E-Classic, when the heater arrived I was skeptical that it could heat my entire house! My home is

8,000 plus square feet, well I'm happy to say I was wrong! This thing is amazing!

I was on heating oil, and in the dead of winter I was burning about $1,600 a month in heating oil and propane to heat my house and hot water! I now have more hot water than I know what to do with! And my cost savings are out of this world! I'm going through a cord of wood a week at $125 a cord so that's $500 per month compared to the $1,600 I was spending! I know this sounds too good to be true but it is!

”

- Thad, AK

“

The best decision I ever made was

- Matt, MI

”

“

I think that the Central Boiler should be rated a 12 on a 1 out of 10. This is such a wonderful product, no home should be without one.

”

- David, OH

“

We purchased our Central Boiler last

December and we love it! I sometimes fi nd myself saying I wish I had it 10 years ago. Thanks.

”

- Barry, TN

“

I have been an owner of a Central money saver over these many years.

-Randal, MN

”

“

This is my second winter with the that I didn’t buy it sooner.

- David, IL

”

“

I load it once a day and forget about it. It is so much more convenient than having to constantly load the indoor wood burner and I am using about half the wood. I am more at ease with the fi re outside away from the house along with the dust, bugs and ash. It has also been nice not having to hear the propane hot water heater run at all. The unit is nicely constructed and blends in with the surroundings out in the yard.

”

- Lucas, NC

“

This is the fourth year I have owned my Central Boiler and I have to say, it may very well be the best investment I have ever made. The furnace has paid for itself. I continue to be impressed with the quality and eﬃ ciency of the

Central Boiler product, the simplicity of maintenance, and the excellent dealer support I receive. I have recommended your product to many people and will continue to do so, as

I truly believe it is superior to your competitors.

- John, WV

”

Read, watch and hear more at

CentralBoiler.com

E-Classic Model Lineup

E-Classic E 1450

E-Classic 1450

Ignition Ready

Door. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18"W x 18"H

Firebox Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32"

Firebox Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . 15 cu ft

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,110 lbs

Water Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 gal.

Supply/Return Ports, 3/4" . . . . . . . . . . . . . . . . . . . . . 1 pair

Supply/Return Ports, 1-1/4" . . . . . . . . . . . . . . . . . . . . 1 pair

E-Classic 3250

Ignition Ready

Door . . . . . . . . . . . . . . . . . . . . . . . . . . . .22.5"W x 28.5"H

Firebox Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40"

Firebox Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . 32 cu ft

Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,240 lbs

Water Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . 410 gal.

Supply/Return Ports, 3/4" . . . . . . . . . . . . . . . . . . . . . 2 pair

Supply/Return Ports, 1-1/4" . . . . . . . . . . . . . . . . . . . . 1 pair

Four color combinations to complement your landscape

Realtree™ Camo and Bronze

Green and Bronze

Charcoal and Bronze

Color selections are close representations but are limited due to print variations.

Foundation Dimensions

Furnace must be installed on a noncombustible surface or foundation that incorporates an enclosure that will prevent supply and return lines from any possible exposure to sunlight, fire, or physical damage that may be caused by an occurrence outside the furnace enclosure.

12"

48"

E-Classic 1450

(Foundation Optional)

6.5"

20"

16.5"

Base

59"

Front

47"

72"

Taupe and Bronze

72"

E-Classic 3250

(Foundation Optional)

24.5"

13.5"

Base

71"

Front

53"

72"

12"

Recommended maintenance clearances

2" rigid foam insulation (optional)

Choose the right Central Boiler outdoor wood furnace for your application.

The Best Way to Size Your Furnace – Using Previous Heating History Including Water Heater

Fuel Type

Units

Fuel Oil

gallons

Propane

gallons

Natural Gas

cubic feet, therms

Electricity

kilowatts

Wood

† cords

Units per Month

Multiplier

Sizing Value

x 1.18

x 0.78

x 0.0087/cu.ft

x 0.87/therm x 0.037

x 150

If you have New, Well-Insulated Buildings

††

New well-insulated buildings with R28 walls, R40 ceilings, insulated basement walls. Normal sizing allows for one picture window and one patio door.

Calculation does not allow for extremely large glass or air exchange heat losses.

Buildings that are not well insulated are not applicable in this calculation. Use previous heating history to determine sizing.

We recommend you complete a heat loss estimate (e.g., Hydronics

Institute - form 1504WH).

Total sq. ft.

Total Sizing Value

Compare your Total Sizing Value to the

Suggested Sizing Range for the listed models.

Furnace

E-Classic 1450

E-Classic 3250

Suggested Sizing Range

0-475

475-1800*

Multiplier

x 0.06

Total Sizing Value

†

Full cords of medium to high-quality wood.

††

Improperly insulated radiant slab heating can dramatically affect sizing requirements and heat load.

* Estimate subject to change.

Be sure to consult your dealer when sizing. Previous heating efficiencies and heat loss need to be considered when sizing a furnace. This is only a guideline.

This sizing worksheet calculation estimates the existing fossil fuel (heating oil, propane, natural gas) heating equipment performing at 75% efficiency.

Lower Fuel

Consumption

Factors that affect your fuel burn rate

Decreased heat loss

• Well insulated building(s)

• Minimal cold air infiltration

• Warmer temperature

• Using seasoned wood with

moisture content of less than 25%

Increased heat loss

• Poorly insulated building(s)

• Cold air infiltration

• Colder temperature

• Using wood with high moisture

Higher Fuel

Consumption

BURN LESS WOOD WITH SEASONED WOOD

Btu's Lost when Burning High Moisture Content Wood

The difference between a full load of 25% moisture wood and 50% moisture wood is up to six gallons of water.

LEADERS IN PRODUCT QUALITY,

DESIGN AND INNOVATION

Central Boiler traces its roots back to 1984 in a workshop just south of Greenbush, Minnesota.

There, a single idea and some welded pieces of metal would grow into a company that is recognized today as North America’s largest manufacturer of outdoor furnaces. The company’s innovations and patents come from people who take a little more time, pay a little more attention and go a little further to make sure that every Central Boiler product is ready to meet the demands of the real world.

AUTHORIZED CENTRAL BOILER

DEALERS LOCATED ACROSS

THE U.S. AND CANADA

When you’re looking for a wood heating system, a

Central Boiler dealer is there to answer questions, provide you with literature about Central Boiler outdoor wood furnaces and help you choose the model right for your heating needs.

To locate a Central Boiler dealer in your area, visit the dealer locator at CentralBoiler.com.

Also check out Central Boiler's Classic Edge line of outdoor wood furnaces.

Using wood as a heating fuel is endorsed by the U.S.

Forestry Service.

20502 160th Street • Greenbush, MN 56726

(800) 248-4681 or (218) 782-2575

CentralBoiler.com

® ™ Trademarks of Central Boiler, Inc.

Printed in the United States 12/15

For the maximum performance and life of your furnace, always insist on using Central Boiler authorized system parts and accessories.

See Owner’s Manual for proper chimney height and installation.

Minimum chimney height is determined by proximity to other buildings. Consider location and direction smoke may travel with prevailing winds before installing your furnace.

Content of this brochure is information in possession of

Central Boiler at the time of the design of this publication and may not represent what was previously manufactured.

Product specifications and appearance subject to change.

Operating an outdoor furnace may not be suitable to some individuals' abilities or lifestyles. Be sure to review the Owner’s Manual for the appliance with your dealer.

*European EN 303-5 efficiency results for the

E-Classic E 1450 are rounded to the nearest whole number. Results vary based on wood species, wood quality, wood quantity and moisture content. The efficiency of other models varies.

Ask your dealer about Outdoor Furnace

Best Burn Practices.

FREE 25 YEAR LIMITED WARRANTY

A free 25 year limited warranty is available if your Classic Edge is registered at the time of purchase. Central Boiler leads the industry with its commitment to stand behind its outdoor wood furnaces. See Warranty Registration form for details.

Your Authorized Central Boiler Dealer

p/n 9000372

Thank you for your participation!

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