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MHSC B36RA8 Installation, Operation And Maintenance Manual

Woodburning fireplaces
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Woodburning Fireplaces
Models: B36LA8 and B36RA8
Installation, Operation and Maintenance Manual
For Residential Installation
36" Built-in Wood Burning Corner Fireplace with Optional Outside Air and Glass Doors
WARNING: This fireplace has not been tested with an unvented gas log set. To reduce risk
of fire or injury, do not install an unvented gas log set into fireplace.
Report No. MH7603
87D0176 2/10 Rev. 2

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  • Page 1 Woodburning Fireplaces Models: B36LA8 and B36RA8 Installation, Operation and Maintenance Manual For Residential Installation 36” Built-in Wood Burning Corner Fireplace with Optional Outside Air and Glass Doors WARNING: This fireplace has not been tested with an unvented gas log set. To reduce risk of fire or injury, do not install an unvented gas log set into fireplace.

  • Page 2: Table Of Contents

    B36LA8 & B36RA8 Woodburning Fireplaces CONTENTS Congratulations! You have chosen the finest wood burning fireplace available. Your fireplace has been designed for years of heating and viewing enjoyment. Please take time to read this entire manual before installing or operating your fireplace.

  • Page 3: Important Information

    The fireplace is designed to sit directly on a combustible floor. The fireplace must be installed with clearances to com- bustible building materials specified in this manual. Only parts manufactured by MHSC and labeled for use with the fire- place should be used in the installation of this fireplace except for special roof flashings that may be fabricated locally.

  • Page 4: Operation Guidelines

    When this happens, the house will draw in outside air form the cracks in the windows, down the fireplace flue or other locations of air leakage in the home. Because cold air infiltration may be unavoidable in some structures, MHSC is not responsible for heat loss or air infiltration through or around the fireplace.

  • Page 5: Product Features

    FIREPLACE DIMENSIONS & LOCATION B36LA8 & B36RA8 Woodburning Fireplaces 32” (813 mm) 10” (254 mm) Figure 3 23” (584 mm) 23” (584 mm) 38 ” (978 mm) 22” (559 mm) 8” (203 mm) 45” (1143 mm) 42” ” 34 ” (1067 mm) (576 mm) (883 mm) 30 ” (772 mm) 22” (559 mm) 34” (864 mm) 5 ” 3/4”  (146 mm) (19 mm)

  • Page 6: Chimney Components

    CLEARANCES B36LA8 & B36RA8 Woodburning Fireplaces Figure 1 Residential Installation Chimney Cap Model RLTSK8 13 ft. = Min. Height (No offsets) 13 ft. = Min. Height (2 30° Elbows) 21 ft. = Min. Height (4 30° Elbows) Roof Flashing 86 ft. = Max. Height (Chimney support Model 8-6-12 or every 30 ft.)
  • Page 7 CLEARANCES B36LA8 & B36RA8 Woodburning Fireplaces B36RA8 Figure 4 Hearth Extension Model I627 24” Min. Hearth Extension Clearance from Fireplace Model I658 Opening to Sidewall When Wall Shield IS NOT Used B36RA8 Hearth Extension Model I627 Outside Air 27” 24” Min.

  • Page 8: Floor Protection

    B36LA8 & B36RA8 Woodburning Fireplaces FLOOR PROTECTION All fireplaces installed over a combustible floor must incorporate a noncombustible earth extension. It is required to protect the floor in front of the fireplace from both radiant heat and sparks. Hearth extension dimensions should be determined by using the chart below. Use hearth extensions as il- lustrated in Figures 5, 10 and 11 or use an acceptable thickness of a durable noncombustible material with an equal or greater insulating value than K - .43 BTU in/ft...

  • Page 9: Clearances

    B36LA8 & B36RA8 Woodburning Fireplaces WB36LR (Brass) B36LA8  Fireplace SKCS8 B36RA8  Fireplace SK830-2 HI627 Hearth Extension 403 Duct Connector FP-4-U Uninsulated Flex Pipe SKFS2A RLTSK8 RLK Kit HI658 Hearth Extension SK84 SK83 LLK Kit SK818 SK81 OAC4 Combustion Air Assy 8-6-12 Flashing Model Number Description Model Number Description B36LA8, Left or right end open fireplace. Includes wire CTSK Adapter kit.

  • Page 10: Fireplace Installation

    Figure 6 with Attic Space FP2162 brick or stone hearth extension Chimney Cap Installation of Shields with MHSC End Open Fireplace Figure 7 and “SK8” Series Chimney Roof Joists Shields - Secure to Top of Chase Top 3’ Min. Opening Before the Chase Top Flashing is Installed Storm Collar 14Z\x”...

  • Page 11: Chase Installation

    FIREPLACE INSTALLATION B36LA8 & B36RA8 Woodburning Fireplaces Chase Installation Insulation methods shown are optional for cold climate, not a requirement for unit op- Termination Cap eration. Storm Collar Pan Flashing Batt Insulation (cut our around firestop) Draftstop Firestop Ceiling Level...
  • Page 12 B36LA8 & B36RA8 Woodburning Fireplaces FIREPLACE INSTALLATION Figure 8 Flue Outlet Height Chimney 3’ Min. Figure 9 Storm Collar Attic Space Flashing Preferred Refer to Table 1 for Location Roof Opening Sizes Roof Joist Shields Firestop Spacer 14Z\x” Square Hole...
  • Page 13 Before beginning the installation, be sure you have the proper parts in sufficient quantity. Refer to the Parts Diagram and List section of this manual for proper identification of parts. Do not substitute parts. Use only parts listed for use with Model B36LA8 and B36RA8 fireplaces. Fireplace Installation 1.

  • Page 14: Mobile Home Installation

    RLK Louver Kit (Use LLK on Left End Open Fireplace) Galvanized Metal Strip WB36LR Glass Door Cool Air Inlet Nail to Framing Fireplace - Model C36RMA (B36RA8 with 22 ” Min. Front to Back Members RLK Louver kit, WB36LR Glass Door, and (572 mm)

  • Page 15: Chimney Installation

    B36LA8 & B36RA8 Woodburning Fireplaces CHIMNEY INSTALLATION “A” Flue Outlet Figure 14 Height 2’7” Min. when 7” Dimension “A” is 10’ or Less 3’7” Min. NOTE: Flue outlet should be 2’ above all portions of the building within 10’. The chimney must not extend more than 90”...

  • Page 16: Chimney Offset And Cap Installation

    B36LA8 & B36RA8 Woodburning Fireplaces CHIMNEY INSTALLATION Chimney Requirements - Offset Installations OFFSET CHIMNEY FLUE EXIT RISE CHIMNEY SECTION FP282 30˚ ELBOW 30° Elbow Offsets RETURN IWF282 ELBOW MBUF 5/26/96 1' 1¹⁄₂' 3' 4' Offset Rise 30˚ OFFSET 0 0 0 0 3"...

  • Page 17: Planning Information

    To ensure proper draft, it is recommended that you always meet or exceed the NOTE: The B36RA8 and B36LA8 models use MHSC “Ten Foot Rule,” especially when installing a termination SK8 (2-wall) chimney systems.
  • Page 18 If you live in a cold climate, it is not required but highly If you need help in determining fireplace location or how recommended that you insulate fireplace enclosure to the chimney system should be run, contact your MHSC eliminate cold air penetration as much as possible. dealer for assistance.

  • Page 19: Cutting The Hole

    This is accomplished by between the outside diameter of the chimney and the using MHSC elbows. Use the 30° Offset Elbow table on edges of the framed ceiling hole. Page 6 to determine proper offset and parts required.
  • Page 20 INSTALLATION B36LA8 & B36RA8 Woodburning Fireplaces INSTALL THE CHIMNEY SYSTEM Elbow Strap Support Structure Start by attaching the first chimney section to the collar on top of the fireplace. Install the pipe as pictured in Figure 16. When you get a good lock, you will hear the pipe clearly snap together.
  • Page 21 INSTALLATION B36LA8 & B36RA8 Woodburning Fireplaces LOCATE CHIMNEY CENTERPOINT ON Nails (4) Attic Installation ROOF Use same procedure detailed in locating centerpoint of Firestop the flue system. Spacer Drive a nail up through roof at the centerpoint. This will determine center point on outside of the roof.
  • Page 22 B36LA8 & B36RA8 Woodburning Fireplaces CHIMNEY OFFSET AND CAP INSTALLATION You must check your local building codes to determine specific requirements for your city or state. NOTE: Other building materials may be required in addition to Firestop Spacers. Continue chimney through roof...

  • Page 23: Combustion Air Assembly

    OUTSIDE COMBUSTION AIR PRECAUTIONS & RECOMMENDATIONS B36LA8 & B36RA8 Woodburning Fireplaces NOTE: The use of outside air for combustion is optional unless required by building codes. It is only necessary to supply outside combustion air to one side of the fireplace. Use the Model OAC4 combustion air kit.

  • Page 24: Combustion Air Assembly

    B36LA8 & B36RA8 Woodburning Fireplaces COMBUSTION AIR ASSEMBLY Model OAC4 Combustion Air Assembly 1. Remove the cover cap from the 4” outlet opening loca- 2“ Figure 27 App. tion on the left or right outside surface of the fireplace. DO NOT REMOVE THE COVER IF THE OUTSIDE AIR WILL NOT BE CONNECTED.

  • Page 25: Gas Appliance Installation

    GAS APPLIANCE INSTALLATION B36LA8 & B36RA8 Woodburning Fireplaces WARNING: Improper installation or operation of a gas 4. Use a screwdriver or similar tool to push the loose in- appliance in this fireplace can allow unburned gas to leak sulation out of the tube between the firebox and the out which will cause a fire or explosion hazard, or the re- outer jacket of the fireplace.

  • Page 26: Trim Installation

    NOTE: On B36LA8 or B36RA8 Models, noncombustible facing materials may be installed to the top of the fireplace opening. This facing material must be secured and sealed to the face of the fireplace.

  • Page 27: Mantel Installation

    B36LA8 & B36RA8 Woodburning Fireplaces TRIM INSTALLATION Mantel Installation Figure 31 Do Not Install Combustible Combustible Mantel Framing or Trim Below Top Do Not Install Combustible Edge of Fireplace Facing Material Below Top Edge of Fireplace Top Edge of Fireplace 18”...

  • Page 28: Fireplace Operation

    B36LA8 & B36RA8 Woodburning Fireplaces FIREPLACE OPERATION Prepare your fire by placing two logs on the iron grate or WARNING: If a decorative gas appliance is used in the fire basket, and laying the tinder between them. Tinder fireplace the fireplace damper must be fixed in an open may be dry scrap paper, twigs, or bark.

  • Page 29: Chimney Maintenance

    Ashes should be placed in a metal container with a tight MHSC does not recommend chemical cleaners because fitting lid. The closed container of ashes should be placed some may contain elements that corrode the metal parts on a noncombustible floor or on the ground well away of the chimney or fireplace.

  • Page 30: Maintenance And Safety

    B36LA8 & B36RA8 Woodburning Fireplaces MAINTENANCE & SAFETY 10. Do install the proper chimney cap or chimney housing Fireplace Maintenance on the chimney to prevent rain and debris from enter- At the end of each heating season or when the fireplace ing the chimney.
  • Page 31 B36LA8 & B36RA8 Woodburning Fireplaces MAINTENANCE & SAFETY “WARNING: IF NOT INSTALLED, OPERATED AND 11. Don’t install the fireplace where flammable or explo- MAINTAINED IN ACCORDANCE WITH THE MANUFAC- sive liquids or vapors are likely to be present. TURERS INSTRUCTIONS, THIS PRODUCT COULD 12.

  • Page 32: Replacement Parts

    B36LA8 & B36RA8 Woodburning Fireplaces REPLACEMENT PARTS Firebox Wrap Jacket Wrap Item Description Qty. B36RA8 B36LA8 Retainer Side Brick 020270 020270 Retainer Z19901 Z19901 Firebrick Side Assy. Right 014012 Firebrick Side Assy. Left 021663 530941 Rod Outside Air 020293 020293 B36LA B36RA parts Firebrick Back Assy.
  • Page 33 B36LA8 & B36RA8 Woodburning Fireplaces 87D0176...
  • Page 34 B36LA8 & B36RA8 Woodburning Fireplaces 87D0176...

  • Page 35: Warranty

    Limitations and Exclusions 1. No one has authority to add to or vary this limited warranty, or to create for MHSC any other obligation of liability in connection with this fireplace and accessory.
  • Page 36 MHSC 149 Cleveland Drive • Paris, Kentucky 40361 www.mhsc.com...

This manual is also suitable for:

B36la8

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