Monessen Hearth BWB400I, BWBC400I manual Fireplace MIN Floor Line with Raised Hearth

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FLOOR PROTECTION

The ability of insulating material to retard the transfer of heat may be expressed as either Thermal Conduc- tance (C), Thermal Conductivity (K), or Thermal Resistance (R). The mathematical relationship of these values and the formulas for converting one value to another is as follows:

C=K divided by the material thickness (Example C = .43 divided by 1/2 (.50)

C = .86)

K = C multiplies by the material thickness (Example K = .86 multiplied by 1/2 (.50)

K = .43)

R= The material thickness divided by K (Example R = 1/2 (.50) divided by .43

R = 1.16)

FIGURE 11

38"

GAS

OPENING

37 1/2"

19 1/2"

9 1/2"

FLOOR LEVEL

5"

16" (MIN.)

JUNCTION

BOX OPENING

7 1/8"

21"

8 3/4"

52" (MIN.)

HEARTH

EXTENSION

FIGURE 12

SAFETY STRIP 3" X 36" (MIN)

FIREPLACE

8"

MIN.

FLOOR LINE WITH RAISED HEARTH

8"

MIN.

HEARTH

16"

MIN. FLOOR

METAL

SAFETY STRIP

WARNING:

THE HEARTH EXTENSION AND THE GALVANIZED METAL STRIP SHOULD BE INSTALLED ONLY IN A HORIZONTAL RELATIONSHIP TO THE FIREPLACE, AS ILLUSTRATED.

With either type hearth extension minor shifting of the supporting floor or expansion and contraction may eventually cause a crack to develop between the hearth extension and the face of the fireplace. To help prevent the crack from developing, the hearth extension materials must be firmly fastened in place. Wall ties should be screwed to the face of the fireplace and imbedded in the mortar joints of brick, stone, or other non- combustible materials. The metal safety strip packed with the fireplace must be placed beneath the fireplace and extended under the hearth extension or into a mortar joint of the hearth extension as shown by Figures 10, 11, and 12. In the event a crack does eventually develop, the metal safety strip will serve as a barrier to prevent sparks or embers from falling from the fireplace onto combustible flooring materials.

The hearth extension must not block the side air vents, or air inlet louvers on the lower front of the fireplace. These openings must be unobstructed to assure an adequate flow of cooling air around the firebox. If the fireplace is equipped with a blower, or may be equipped with one at a later date, the hearth extension must not prevent the removal of the lower louver panel for servicing the blower. Plan adequately by determining the finished height of the hearth extension to be used and elevate the fireplace on a platform, if necessary, to prevent obstructing the air openings or lower louvered panel.

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53D9031. Rev 1 03/03

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Contents Series BWB400-SERIESTable of Contents Important Information Operation Guidelines Clearances Residential InstallationOutside 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 SF30 Firestop Spacer Chimney Offset and CAP InstallationChimney CAP Installation Intermediate Height Sections Inches Chimney Height and Offset ChartsChimney CAP Chase Installation Outside Combustion AIR Precautions and Recommendations Basement Installation Outside Combustion AIR Precautions & RecommendationsGAS Appliance Installation Combustion AIR AssemblyGAS Appliance Installation From Opening Trim InstallationPart a Glass Door Installation and FAN Accessory Fireplace Operation Species Density Heat Value Maintenance and Safety DO’S DONT’S Model Fireplace Parts Diagram and ListBWBC400/BWBC400I Except Blowers Limited WarrantyYour 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 Model Fireplace Repair Part Diagrams and ListsBWBC500 / BWBC500I FACTORY-BUILT Fireplace and Components Your Duties This page Intentionally Left Blank 53D9032. Rev 1 03/03 53D9032. REV 1 03/03