Monessen Hearth BWBC400I, BWB400I manual Species Density Heat Value

Page 70

FIREPLACE OPERATION

You’ll need a minimum of three logs, preferably four, to make a good fire. Add kindling and new logs as needed to rekindle a dying fire. New logs should be added at the rear grate after raking the coals toward the front. DO NOT OVERFIRE THE FIREPLACE. Overfire conditions may be created by large amounts of kindling, building scraps, or other improper fuels.

Ashes, important because they form a bed of glowing coals, should only be left to accumulate within an inch or two of the bottom of the grate. Excess ashes can be used to check a flaming fire; or to “bank” your fire, cover the logs with ashes. A “banked” fire will hold glowing coals for 8-10 hours, thereby saving a fire for later use.

WOOD VS. FOSSIL FUELS

Compared to fossil fuels, a full cord of dry hickory weighs about two tons and is approximately equal in heating value to a ton of hard coal. On a pound basis, heavy hardwoods have about half the heating value of coal. The tabulation shows the relative densities and heat values of a variety of dry woods. Varieties at the top of the list (Dogwood) burn longer and those near the bottom (White Pine) ignite and burn quicker. A combination of both light and heavy wood is desired.

SPECIES

DENSITY

HEAT VALUE

SPECIES

DENSITY

HEAT VALUE

Dogwood

.70-.79

100-107

Ash

.57-.61

81-82

Hickory

.70-.74

100

Southern Pine

.51-.60

73-81

Oak

.60-.73

86-99

Elm

.50-.59

71-80

Black Locust

.69-.70

95-98

Cherry

.50-.52

70

Beech

.64-.66

89-91

Douglas Fir

.45-.51

64-69

Hard Maple

.58-.65

83-88

Spruce

.41-.44

59

Birch

.55-.64

79-86

Redwood

.33-.40

47-54

Apple

.58-.62

83-84

White Pine

.35-.37

50

AFEW WORDS OF CAUTION

Beware of burning certain material in your fireplace. Among these are plastics, poison ivy twigs and stems, and chemically treated woods such as discarded poles and railroad ties. These not only create air pollution, but can induce extreme irritation for some individuals.

Use hemlock, spruce, juniper and other resinous woods with caution. They contain moisture pockets which, upon heating, “pop” with considerable vigor.

Always use a fire screen. And always “bank” a fire, or at least push all unburned fuel to the rear of the grate before leaving a fire unattended. Do not use this fireplace as an incinerator.

Because the termination of the chimney above the roof is exposed to wind and cold and the pressure changes these and other environmental conditions may cause, a sufficient chimney draft may be hard to establish at times. At other times the draft may be sufficiently disrupted to cause smoke to spill from the fireplace opening. If problems with chimney draft occur, help start chimney draft before you build a fire by holding a piece of burning paper near the flue opening at the top of the firebox to preheat the chimney. If smoke spills from the fireplace opening after the fire is burning, open a window on the up wind side of the house that is far enough away form the fireplace that the wind will not blow across the fireplace opening, push the burning wood as near the back of the fireplace as possible, and if the fireplace is equipped with glass doors, close them.

DO NOT LEAVE CHILDREN OR PHYSICALLY OR MENTALLY HANDICAPPED, OR SENILE PERSONS ALONE WITH A BURNING FIREPLACE.

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53D9032. Rev 1 03/03

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Contents BWB400-SERIES SeriesTable of Contents Important Information Operation Guidelines Residential Installation ClearancesOutside AIR Connector Centerline Fireplace Location Installation Preparation Single Story Installation with Attic Space Floor Protection Fireplace MIN Floor Line with Raised Hearth Fireplace Components See for Illustration of Fireplace Components Described below Fireplace Installation Chimney Installation 17 x Chimney Offset Installation Chimney Offset and CAP Installation SF30 Firestop SpacerChimney CAP Installation Chimney Height and Offset Charts Intermediate Height Sections InchesChimney CAP Chase Installation Outside Combustion AIR Precautions and Recommendations Outside Combustion AIR Precautions & Recommendations Basement InstallationCombustion AIR Assembly GAS Appliance InstallationGAS Appliance Installation Trim Installation From OpeningPart a Glass Door Installation and FAN Accessory Fireplace Operation Species Density Heat Value Maintenance and Safety DO’S DONT’S Parts Diagram and List Model FireplaceBWBC400/BWBC400I Limited Warranty Except BlowersYour Duties This page intentionally left blank 53D9031. Rev 1 03/03 Appliance Installer BWB500, BWB500I, BWBC500 Congratulations Intended Product Usage Operation Guidelines Residential Installation Framing Corner Installation Side Wall Installation Joist Insulate Same Single Story Installation with Attic Space Brick or Stone Hearth Floor Line with Raised Hearth Fireplace Metal Safety Strip SCS Model Description Fireplace Installation Chimney Installation 17 x Although Both Halves 14-1/2 Chimney CAP Installation Straight RUN Chimney Sections Intermediate Height Inches Chimney CAP Chase Installation Outside Combustion AIR Precautions & Recommendations Outside Combustion AIR Recommendations Model AK4 Combustion AIR Assembly GAS Appliance Installation Applying Decorative Trim to the Fireplace Outline Fireplace Firebrick FAN Assembly Fireplace Operation Species Density Heat Value Maintenance and Safety DO’S DONT’S Repair Part Diagrams and Lists Model FireplaceBWBC500 / BWBC500I FACTORY-BUILT Fireplace and Components Your Duties This page Intentionally Left Blank 53D9032. Rev 1 03/03 53D9032. REV 1 03/03