Heatilator MHST36D Installation & Operating Instructions Manual
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Heatilator MHST36D Installation & Operating Instructions Manual

Woodburning fireplace for manufactured housing
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INSTALLATION & OPERATING
INSTRUCTIONS
MHST36D
WOODBURNING FIREPLACE
FOR MANUFACTURED HOUSING
Note:
An arrow ( ) found in the text signifies change in content.
WARNING!
Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this
manual. For assistance or additional information, consult a qualified installer, service agency or the gas supplier.
08/04
31068 Rev E
1

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  • Page 1 INSTALLATION & OPERATING INSTRUCTIONS MHST36D WOODBURNING FIREPLACE FOR MANUFACTURED HOUSING Note: An arrow ( ) found in the text signifies change in content. WARNING! Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual.

  • Page 2: Table Of Contents

    MHST36D INSTALLATION INSTRUCTIONS Table of Contents Safety Precautions ............................2 Design and Installation Considerations ....................... 3 A. Listings and Code Approvals ........................4 B. Description of the Fireplace System ......................4 C. System Components ..........................5 D. Pre-Installation Preparation ........................8 E.

  • Page 3: Design And Installation Considerations

    MHST36D INSTALLATION INSTRUCTIONS DESIGN AND INSTALLATION CONSIDERATIONS When selecting a location for your woodburning fireplace, it is important to evaluate a number of considerations. Modern construction techniques can create conditions that may not allow your chimney to draft properly. This may result in smoke spillage from your fireplace, as well as cause other combustion appliances to operate incorrectly.

  • Page 4: Listings And Code Approvals

    Saunders St., Mt. Pleasant, Iowa 52641 (1-800-927-6841). components may be purchased separately and installed at a later date. However, installation of an outside air kit will Heatilator® is a registered trademark of Hearth & Home require significant reconstruction and should be installed Technologies.

  • Page 5: System Components

    MHST36D INSTALLATION INSTRUCTIONS C. SYSTEM COMPONENTS 1. Fireplace Components Catalog # Description: MHST36D Radiant Fireplace, with Integral Grate, Outside Air Kit and Hearth Protection Strips DM1036 Bi-fold Glass Doors - Black Finish DM1036B Bi-fold Glass Doors - Polished Brass Finish (included with fireplace)
  • Page 6 MHST36D INSTALLATION INSTRUCTIONS 2. Chimney Components The following pictures show only those chimney components which may be safely used with this fireplace. Catalog # Description: CAK4A Chimney Air Kit SL306 Chimney Section - 6 in. long SL312 Chimney Section - 12 in. long SL318 Chimney Section - 18 in.
  • Page 7 MHST36D INSTALLATION INSTRUCTIONS Chimney Sections Catalog # SL306 6 in. 4-3/4 in. Insulation SL312 12 in. 10-3/4 in. Shield TR344 SL318 18 in. 16-3/4 in. Round Termination Cap SL324 24 in. 22-3/4 in. with Storm Collar SL336 36 in. 34-3/4 in.

  • Page 8: Pre-Installation Preparation

    MHST36D INSTALLATION INSTRUCTIONS D. PRE-INSTALLATION PREPARATION 1. Fireplace Locations and Space Requirements Several options are available to you when choosing a location for your fireplace. This fireplace may be used as a room divider or installed along a wall. See Figure 2.
  • Page 9 MHST36D INSTALLATION INSTRUCTIONS CAUTION: The structural integrity of the manufactured housing floor, wall, ceiling and roof must be maintained. WARNING! For all manufactured housing installations the out- side air kit, glass doors and MH842 manufactured housing roof thimble and flashing kit, must be used.
  • Page 10 MHST36D INSTALLATION INSTRUCTIONS 2. Frame the Fireplace The MHST36D fireplace will fit a framed opening of 41 in. wide x 42 in. tall. The finished cavity depth must be no less than 23 in. Figure 3 shows a typical framing (using 2 x 4 lumber) of the fireplace, assuming combustible materials are used.

  • Page 11: Chimney Requirements

    MHST36D INSTALLATION INSTRUCTIONS 3. Sidewalls/Surrounds Adjacent combustible side walls must be located a minimum of 12 in. from the fireplace openings. See Figure 4. If you are using a decorative surround constructed of combustible material, it must be located within the shaded area defined in Figure 4.
  • Page 12 MHST36D INSTALLATION INSTRUCTIONS 1. Using Offsets and Returns To bypass any overhead obstructions, the chimney may be offset using a 15-deg (SL315) or 30- deg (SL330) offset/return. Perform the following steps to determine the correct chimney component combination for your particular installation.
  • Page 13 MHST36D INSTALLATION INSTRUCTIONS 2. Chimney Height Requirements (above roof line) Major building codes specify a minimum chimney height above the roof top. These specifications are summarized in what is known as the Ten Foot Rule. This rule states: “If the horizontal distance from the side of the...

  • Page 14: Installation Of Fireplace

    MHST36D INSTALLATION INSTRUCTIONS F. INSTALLATION OF FIREPLACE WARNING! Before starting, do the following: 1. Wear gloves and safety glasses for protection. 2. Keep hand tools in good condition. Sharpen cutting edges and make sure tool handles are secure. 3. Always maintain the minimum air space required to the enclosure to prevent fire.
  • Page 15 MHST36D INSTALLATION INSTRUCTIONS 4. Assemble the Chimney Sections Attach either a straight chimney section or an offset to the top of the fireplace (depending on your installation requirement). Chimney sections are locked together by pushing downward until the top section meets the stop bead on the lower section.
  • Page 16 MHST36D INSTALLATION INSTRUCTIONS 6. Install the Attic Insulation Shield 8. Secure the Chimney System An insulation shield should be installed when there is When offsets and returns are joined to straight pipe a possibility of insulation coming into contact with the sections, they must be locked into position with the factory built chimney system.
  • Page 17 MHST36D INSTALLATION INSTRUCTIONS 9. Install the MH842 Ceiling/Roof Thimble See Figures 12 & 13. Locate the point where the chimney will exit the roof by plumbing down to the center of the chimney. Lay out, cut and frame a 14-1/2 in. square opening (measured on the horizontal) through the ceiling and roof structure.
  • Page 18 MHST36D INSTALLATION INSTRUCTIONS WARNING! Detailed instructions for installation of the termination cap and storm collar are packaged with these parts. To avoid danger of fire, all instructions must be strictly followed, including the provision of air space clearance between chimney system and enclosure. To protect against the effects of corrosion on those parts exposed to the weather, we recommend that the termination cap be painted with a rust-resistant paint.
  • Page 19 MHST36D INSTALLATION INSTRUCTIONS 12. Complete the Enclosure Complete the fireplace enclosure, allowing space for outside air ducts and gas piping if desired. Electrical wiring should not come in contact with the fireplace. A minimum clearance of 1/2 in. must be maintained between the fireplace sides and the enclosure.
  • Page 20 MHST36D INSTALLATION INSTRUCTIONS 14. Hearth Extension A hearth extension must be installed with all fireplaces to protect the combustible floor in front of the fireplace from both radiant heat and sparks. The construction of, and materials used for a hearth extension are shown in Figures 17 and 18. A hearth extension of this construction may be covered with any noncombustible decorative material and may have a maximum thickness as per the illustration.
  • Page 21 MHST36D INSTALLATION INSTRUCTIONS 15. Position the Hearth Extension 16. Finishing Material Position and secure the hearth extension over the Do not install combustible materials over the black protective metal strips that have been placed partially face of the fireplace! This poses a safety hazard under the fireplace front.

  • Page 22: Operating Instructions

    MHST36D INSTALLATION INSTRUCTIONS G. OPERATING INSTRUCTIONS Note: Save and pass this instruction manual to subsequent home owners. The information provided is intended to notify and warn them about making unsafe future modifications such as the addition of shelves or the use of unauthorized parts and repairs.
  • Page 23 MHST36D INSTALLATION INSTRUCTIONS 4. Glass Doors 7. Wood Fuel Most efficient fireplace operation using glass doors is FIREWOOD: Your fireplace performance depends on with the doors open. When the doors are open, the the quality of the firewood you use. All seasoned wood, screen must be closed.
  • Page 24 MHST36D INSTALLATION INSTRUCTIONS SEASONING: Seasoned firewood is nothing more than Note: The first three or four fires should be of mod- wood that is cut to size, split and air dried to a moisture erate size to allow the oils and binders to be burned content of around 20%.
  • Page 25 MHST36D INSTALLATION INSTRUCTIONS Flue draft is measured as negative pressure in the If the fire is hard to start and smoke spills out of the chimney. The amount of negative pressure determines fireplace, or you find it difficult to establish and maintain how strong the draft is.

  • Page 26: Maintenance Instructions

    MHST36D INSTALLATION INSTRUCTIONS H. MAINTENANCE INSTRUCTIONS 1. Disposal of Ashes Ashes should be placed in a metal container with a WARNING! tight-fitting lid. The closed container of ashes should A chimney fire can permanently damage your be placed on a noncombustible floor or on the ground, chimney system.

  • Page 27: Index

    MHST36D INSTALLATION INSTRUCTIONS Index Air Clearance 16, 19 Offsets/Returns 12 Firescreen 23 Air Kit 5, 18 Outside Air 22 Firestop Spacer Ashes, Disposal of 26 Outside Air Kit 5, 18 Installation 15 Attic Insulation Shield 16 Overhead Obstructions 12 Firewood 22, 23...

  • Page 28: Warranty

    Appliance or any component of the Appliance has been removed from the place of original installation. Obtain HHT’s consent to any warranty work before the work is done. ADDITIONAL INFORMATION: If you would like information on current HEATILATOR products or want to locate a dealer in your area, call 1-800-927-6841.

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