Morgan & Company HEARTHSTONE 8470 User Manual download pdf (Page 15)

HearthStone Quality Home Heating Products, Inc. ® Morgan Model 8470

The quality of your firewood affects heat output, duration

of burn and performance of your Fireplace Insert.

Softwoods generally burn hotter and faster, while

hardwoods burn longer and produce more coals. Density

and moisture content are two critical factors to consider

when purchasing wood for your Fireplace Insert.

The following is a list of wood species and their relative

BTU (British Thermal Unit) content. The higher the BTU

the longer the burn. Firewood with higher BTUs is

generally considered ideal for a wood stove.

HIGH: Apple, Black Birch, Hickory, Locust, White Oak,

Black Beech, Mesquite

MEDIUM HIGH: White Ash, Beech, Yellow Birch,

Sugar Maple, Red Oak

MEDIUM LOW: Black Ash, White Birch, Grey Birch,

Elm, Norway Pine, Pitch Pine, Black Cherry, Soft Maple,

Tamarack

LOW: White Pine, White Cedar, Balsam Fir, Spruce,

Aspen, Basswood, Butternut, Hemlock

Moisture content also plays a key role in the performance

of your stove. Wood freshly cut from a living tree (green

wood) contains a great deal of moisture. As you might

expect, green wood has difficulty burning and should be

seasoned before using it in your wood stove. To properly

season green wood, it should be split, stacked and allowed

to air dry for a period of one year.

Stack the firewood on skids or blocks to keep it off the

ground, cover only the top of the stack. Plastic or tarps

that cover the sides of the woodpile trap moisture and

prevent the wood from drying. As for stacking, an old

Vermonter said, "The spaces between the logs should be

large enough for a mouse to get through, but not for the

cat that's chasing it."

Firewood should not be stored within the Fireplace

Insert's specified clearances to combustible materials.

BUILDING A FIRE

Once you understand the controls of your wood Fireplace

Insert and have chosen the appropriate firewood, you are

ready to start a fire.

BREAKING IN YOUR WOOD FIREPLACE INSERT

It is imperative that your Fireplace Insert be "broken in"

slowly. Cast iron must be "seasoned"; over-firing a new

Fireplace Insert may cause castings to crack or may

damage other Fireplace Insert parts. Moisture in the

soapstone must be driven out slowly to minimize the

“shock” to the stone of its first exposure to high firebox

temperatures. In addition, the asbestos-free furnace

cement must be cured slowly to insure adequate sealing

and bonding.

When you light your first fires, the wood Fireplace Insert

will emit some smoke and fumes. This is normal “off-

gassing” of the paints and oils used when manufacturing

the wood Fireplace Insert. If you find it necessary, open a

few windows to vent your room. The smoke and fumes

will usually subside after 10 to 20 minutes of operation.

The odor and smoke will end once the Fireplace Insert is

“cured”.

The first fires may produce other odors from impurities

that exist in the area immediately surrounding the

Fireplace Insert. Some of these impurities can be

cleaning solvents, paint solvents, cigarettes, smoke, pet

hair, dust, adhesives, a new carpet, and new textiles.

These odors will dissipate over time. You can alleviate

these odors by opening a few windows or otherwise

creating additional ventilation around your Fireplace

Insert. If any odor persists, contact your dealer or an

authorized service technician.

If you adhere to the following break-in procedure, as well

as all other operating procedures in this manual, the cast

iron and soapstone components of your Fireplace Insert

will give you many years of trouble-free use. With use,

the color of the soapstone may change and small fractures

may appear on the surface of the stone. These changes

will only add character and distinction to your Fireplace

Insert.

Avoid the following conditions that can cause the

soapstone or cast iron pieces to break:

• Do not throw wood into the Fireplace Insert.

• Do not use the door as leverage to force wood into

the Fireplace Insert.

• Do not load wood that is encrusted with ice into a

burning stove as the thermal shock can cause

damage.

• Do not use a manufactured grate. Burn the fire

directly on the soapstone that lines the bottom of the

firebox.

The bottom layer of soapstone in the firebox is intended

to prevent thermal stress and should remain in place in the

fire box at all times.

BUILDING A BREAK IN FIRE

1) Open the front door and place five or six

double sheets of tightly twisted newspaper

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Morgan & Company HEARTHSTONE 8470 User Manual Page 15

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