Yukon Oil Furnace Owner's Manual download pdf (Page 19)

BTU’s Equivalent

Pound Per Cord Value #2

Weight Air Dried Fuel Oil

Type per Cord Wood Gallons

White Pine 1800 17,000,000 120

Aspen 1900 17,500,000 125

Spruce 2100 18,000,000 130

Ash 2900 22,500,000 160

Tamarack 2500 24,000,000 170

Soft Maple 2500 24,000,000 170

Yellow Birch 3000 26,000,000 185

Red Oak 3250 27,000,000 195

Hard Maple 3000 29,000,000 200

Hickory 3600 30,500,000 215

CAUTION

REMOVE AIR CONDITIONING COIL FROM WARM AIR

PLENUM IF USING FURNACE DURING FAN FAILURE OR

ELECTRIC POWER FAILURE.

If for any reason there should be an electric power failure,

either from high limit cutoff or electrical power outage, the

damper will automatically close, preventing over-fire with no

blower, thus preventing heat exchanger damage.

BURNING COAL ON 1/2-INCH OPENING GRATES

(Optional)

GENERAL INFORMATION

This information contains the instructions for burning various types

of coal, storage of coal, and the cleaning of the furnace.

Some coal is oil-treated at the mine and some users have indicated

that it tends to make the coal more difficult to start.

Burning coal requires some patience and a regular procedure. With

improper tending, a coal fire can go out in a short time. Once the

fire starts to go out, it is almost impossible to reverse.

After a coal fire goes out, all the coal must be removed from the

furnace before the starting process can be repeated.

Our coal burning instructions are general, as coal comes in various

sizes and types. Anthracite coal is most recommended as it burns

with little smoke when burning properly.

OPERATING INSTRUCTIONS FOR BURNING COAL

GENERAL INFORMATION

CAUTION

Burn Anthracite — Bituminous — Lignite coals only

DO NOT BURN

Petroleum — Coke — Cannel Coals

IGNITION TEMPERATURE OF COAL AND WOOD

How hot does coal have to get to ignite? Following are examples of

the ignition points of various materials:

Paper ignites @ 350ºF

Wood ignites @ 435ºF

COAL: Western lignite ignites @ 630ºF

Low volatile bituminous ignites @ 765ºF

High volatile bituminous ignites @ 870ºF

Anthracite ignites @ 925ºF

BEST WOOD TO BURN

All solid fuel, whether it is coal, pine, oak or any grain has about

12,000 BTU’s per pound if it’s moisture content is zero. Wood that

has been cut, split and air dried for 2 years has about 8,000 usable

BTU’s per pound. Hardwood such as oak or hard maple has nearly

twice the BTU’s per cord as pine or aspen because it is nearly

twice as heavy.

Freshly cut wood has about 50% moisture content. Wood that has

been cut and split for 2 years has about 20%. Wood must reach at

least 435º to ignite. High moisture content wood does not allow the

gases in wood to get hot enough to provide complete combustion,

thereby creating smoke and creosote, which is usable energy, but

wasted because of incomplete combustion.

Yukon/Eagle furnaces are designed to wring the most energy pos-

sible from each log. Your furnace is designed to allow the primary

air under the grate to create the initial burning. As the wood burns,

gases, which contain 40% of the energy in the wood, escape to the

top of the flame. The patented secondary air system (the round

tubes between the firebrick) draws room air into the tubes and pro-

vides oxygen to the firebox to burn these gases. The result is you

will use up to 75% less wood than stoves, furnaces or outdoor

boilers without these features.

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Yukon Oil Furnace Owner's Manual Page 19

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