Heatilator LM42 Installation Manual
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Heatilator LM42 Installation Manual

Heatilator LM42 Installation Manual

Woodburning fireplace
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Download this manual See also: Owner's Manual
INSTALLER: Leave this manual with party responsible for installation and operation.
OWNER: Retain this manual for future reference.
Contact your dealer with questions on installation, operation, or service.
NOTICE: DO NOT discard this manual!
Model(s):

WOODBURNING FIREPLACE

Installation and service of this
appliance should be performed by
qualified personnel. Hearth & Home
Technologies recommends HHT
Factory Trained or NFI certified
professionals.
Installation Manual
Installation and Fireplace Setup
Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16
WARNING! Risk of Fire and/or Asphyxiation!
• Read all the instructions before starting
the installation. Follow these instructions
carefully during the installation to ensure
maximum safety and benefit.
• Comply with all minimum clearances to com-
bustibles as specified. Failure to comply may
cause house fire.
HOT SURFACES!
Glass and other surfaces are hot during
operation AND cool down.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room as
fireplace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other flammable
materials.
• Keep clothing, furniture, draperies and other flammable
materials away.
WARNING
1

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Summary of Contents for Heatilator LM42

  • Page 1: Woodburning Fireplace

    • Keep clothing, furniture, draperies and other flammable WOODBURNING FIREPLACE materials away. Installation and service of this appliance should be performed by qualified personnel. Hearth & Home Technologies recommends HHT Factory Trained or NFI certified professionals. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 2: Table Of Contents

    5 Chimney Installation A. Typical Chimney System B. Assemble Chimney Sections C. Secure Offset/Return D. Install Firestops E. Install Attic Insulation Shield F. Thimble Installation - Manufactured Home G. Roof Penetration H. Install Chase/Chase Top  = Contains updated information. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 3 Comments: Further description of the issues, who is responsible (Installer/Builder/Other Trades, etc.) and corrective action needed: Comments communicated to party responsible __________________________ by ______________________on _________ (Builder/Gen. Contractor) (Installer) (Date) 4087-982 • Rev A • 11/15 Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 4: Product Specific & Important Safety Information

    This appliance is equipped with 5mm ceramic glass. Fire Risk Please contact your dealer for replacement glass. TO AVOID THE RISK OF DAMAGING FIREPLACE MA- TERIALS AND INCREASING THE RISK OF SPREAD- ING A FIRE, DO NOT USE THE FIREPLACE TO COOK OR WARM FOOD. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 5: Getting Started

    Locate cooling air in the enclosure of Non-combustible material outdoor unit no less than 12 inches off ground level. Outside combustion air Hearth Extension Figure 2.1 Typical Fireplace System Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 6: Design And Installation Considerations

    • Avoid outside wall Windward Leeward Not recommended in basement due to high negative pressure concerns that effect draft Figure 2.2 Recommended Chimney Locations Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 7: Selecting Fireplace Locations

    Note: Unit standoffs can be placed against combustible materials. Maintain 1-1/2 in. (38mm) air space otherwise. Do not fill area with insulation. Do not remove standoffs. Figure 2.3 Fireplace Locations Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 8 • Cooling air can be provided by cutting a 6 in. hole in the enclosure and attachng an outside air inlet hood, Part# 4059-051 or covering it with screen. *No ducitng is required. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 9 10 ft Min. (Enclosed Fireplace) (8ft. 8in. minimum height from base of unit) FREESTANDING INSTALLATION COOLING AIR (Combustible Structure) REQUIRED Figure 2.5 Freestanding Fireplace Locations Outdoors (LM42-SS only) Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 10: Tools And Supplies Needed

    Remove 10 screws from each side. Retain screws. ii. Lay the nailing flanges aside. See Figure 2.6. Non-combustible Remove Screws Weight Assemblies Weight Holder Remove Screws Weight Assemblies Side Cover Access Weight Holder Carry Handle Nailing Flange Figure 2.6 Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 11: Fireplace System Requirements

    Remove screw at the center of the shipping bracket, Cooling air required for outdoor freestanding unit only remove bracket and reinstall center screw after shipping if using combustible material (hood not included) bracket has been removed • Chimney System (components as required) - Attic Insulation Shield (included with fireplace) q. Tighten screws at the bottom that were loosened ear- lier Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 12: Framing And Clearances

    Framing and Clearances A. Appliance Diagrams Dimensions are actual appliance dimensions. Use for reference only. For framing dimensions and clearances refer to Figure 3.2 & 3.3. Figure 3.1 Fireplace Dimensions Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 13: Clearances

    Must have 2 in. (51 mm) Ceiling Firestop minimum clearance to header 0 in. to level of standoffs 48 in. 1219 mm 0 in. to floor Figure 3.2 Clearances to Combustible Materials Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 14 * = Adjust framing dimensions for interior sheathing (such as sheetrock) ***= If appliance is installed off of floor, maintain required clearances to combustibles. Construct platform in accordance with local building codes. Figure 3.3 Clearances to Combustibles Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 15: Construct The Chase

    All outside walls should be insulated. - A firestop spacer and attic insulation shield should be installed at the false ceiling. See Figure 3.4. - The chase must be properly blocked to prevent blown insulation or other combustibles from entering and making contact with fireplace or chimney. - The chase top must be constructed of non- combustible material. Figure 3.5 Chase Applications Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 16: Frame The Fireplace

    NAILING TABS BOTH SIDES CAUTION! Risk of Cuts/Abrasions. Wear protective gloves and safety glasses during installation. Sheet metal edges Figure 3.6 Nailing Tab Locations are sharp. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 17: Protective Metal Hearth Strips

    (51 mm) under the front of the fireplace and must extend beyond the front and sides of fireplace opening by 2 in. (51 mm). Figure 3.7 Position the Protective Metal Hearth Strips Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 18: Outside Air Kit (Required)

    • Secure flex duct with screws or wire ties. Figure 3.9 Outside Air Installation Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 19: Non-Combustible Facing Material Installation

    • Slide the top board down the front of the unit and behind the flanges around the opening of the fireplace. • Secure the board to the fireplace at the predrilled holes with the 1-1/4” inch screws provided. Attach the board to the framing members with regular sheetrock screws or nails. • Slide the side boards in place from each side behind the flanges around the opening of the fireplace. • Secure the board to the fireplace at the predrilled holes with the 1-1/4” inch screws provided. Attach the board to the framing members with regular sheetrock screws or nails. • Use a wet or soft brush to remove dust or dirt from facing Figure 3.10 Non-Combustible Facing Material material. • See section 7 for finishing materials guidelines. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 20: Chimney And Termination Requirements

    SL318 16-3/4 materials around the chimney system. SL324 22-3/4 SL336 34-3/4 SL348 46-3/4 1187 * Dimensions reflect effective height. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 21: Offsets/Returns

    76 7/8 1953 22 3/4 91 7/8 2334 43 1/4 1099 84 1/8 2137 96 1/2 2451 45 1/8 1146 87 1/4 2216 25 7/8 103 1/2 2629 49 1/4 1251 94 1/2 2400 Proper assembly of air-cooled chimney parts result in an overlap at chimney joints of 1-1/4 in. (32 mm). Effective length is built into this chart. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 22: Termination Requirements

    10 ft (3 m) of the chimney Chimney must extend 3 ft (.9 m) above the roof Figure 4.3 Multiple Chimney Locations Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 23: Chimney Installation

    2 in. (51 mm) min. air space clearance required around pipe Figure 5.2 Typical Chimney System - Thimble Application For Manufactured Housing Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 24: Assemble Chimney Sections

    1/2 in. (13 mm) to fasten chimney outer sections Band together. Do NOT penetrate inner flue. (Optional) Optional • Vertical straight runs of chimney must be supported every Additional 35 ft (10.7 m). Support Figure 5.4 Secure the Chimney Figure 5.3 Assembling Chimney Sections Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 25: Install Firestops

    Installing the Ceiling Firestop WARNING! Risk of Fire! DO NOT seal area between firestop opening and chimney pipe except where they en- ter the attic or leave the warm air envelope of the home (use 600° F sealant). Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 26: Install Attic Insulation Shield

    10-1/2 in. (267 mm) insulation from spilling into the cavity. • Maintain specified air spaces around chimney. Figure 5.7 Install Attic Insulation Shield (firestop above ceiling) Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 27: Thimble Installation - Manufactured Home

    • Finish assembling the chimney, storm collar and termination cap following the installation instructions provided with them. NOTE: Roofing shingles must be below the flashing plate on the lower side of a sloped roof and over the flashing plate on the sides and top. Figure 5.8 MH Thimble Installation Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 28: Roof Penetration

    Slope the chase top downward away from the .018 (26 ga) min. opening. Galvanized • Caulk all seams to prevent leaks. Chase Top Figure 5.10 Chase Top Construction Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 29: Install Termination Cap

    2 in. (51 mm) maximum Figure 5.11 Installing a TR344 Round Termination Cap 4 3/4 in. (121 mm) maximum Chase Chimney Pipe Figure 5.13 Installing an ST375 Square Termination Cap Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 30 Minimum Height mm) below the top of the chase. 2 in. (51 mm) Chase Top 4-3/4 in. (121 mm) Chase Chimney Pipe Figure 5.16 Installing CT-3A-B Adapter Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 31: Shrouds

    3 in (76 mm) air space from bottom of shroud Chase Top to top of chase. Figure 6.3 Shroud & TR Series cap with no Radiation Shield Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 32: Mailbox Style Shroud

    27 x 27 Min. Opening Width 686 x 686 Min. Height Above Bottom of Termination Cap Min. Opening Width Min. Opening Height Figure 6.5 Roofed Style Shroud Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 33: Facing, Mantels & Hearth Extensions

    2-3/4 in. (70 mm) 6-1/4 in. (159 mm) 3-3/4 in. 42 in. 3-3/4 in. (95 mm) (1067 mm) (95 mm) Fastener Area Figure 7.1 Designated Fastener Area Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 34: Hearth Extension, Building And Finishing

    Hearth Extension Dimensions using one or more sources of material as long as Model # the R value is attained. See Table 7.2 and Figure 7.3. LM42 • Refer to Table 7.2 for hearth extension insulation 1473 alternatives. Figure 7.2 Hearth Extension Dimensions Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 35: Raised Hearth Extension And Raised Fireplace

    12 in. (305 mm) Framing Material below fireplace opening 1/2 in. Micore Protective metal or equivalent Floor hearth strips insulation Seal with grout, motar, or high temperature sealant Figure 7.4 Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 36: Mantel And Wall Projections

    (1118 mm) minimum 1 1/2 in./38 mm maximum 14 in./356 mm minimum 8 in./203mm minimum Measured from top of fireplace opening Base of fireplace Figure 7.5 Mantel Specifications Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 37: Sidewalls/Surrounds

    9 3/4 in. [248 mm] 12 in. 12 in. [305 mm] [305 mm] Figure 7.6 Mantel Leg, Surround or Wall Projection (acceptable on both sides of opening) Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 38: Fireplace Accessories

    LMGL-MD Gas Log Set. -Remove side stone and turn end for end to show knockout. • Seal refractory around pipe with fireplace mortar or a non-combustible sealant. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 39: Reference Materials

    Field Constructed Shrouds (See “Woodburning Termination Cap”) Outside CT-3A-B Adapter - May be used with the following caps 4-3/4 in. (121 mm) Diameter Effective Height 10-1/2 in. CT Series (267 mm) DT Series SL3 Chimney Stabilizer Manufactured Housing 20 in. Thimble Extension MH841 Manufactured Housing Thimble 12966A Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 40 JB877 Chimney Joint Band (305 mm) 24-5/8 in. 10-1/2 in. 31 in. (625 mm) (267 mm) (787 mm) CB876 Chimney Bracket RF371 Roof Flashing TR-TVK TR Top Vent Kit CT-3A-B Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 41 15-3/4 in. (400 mm) TR344 Round Termination Cap TS345/TS345P Square Termination Cap TR342-B Round Telescoping Termination Cap ST375 Square Termination Cap TCT375 Terra Cotta Cap Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 42 22 3/4 in. 21 3/16 in. (577 mm) (538 mm) 46 in. 46 in. (1168 mm) (1168 mm) 26 in. 26 in. (660 mm) (660 mm) DTO146 DTS146 Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

  • Page 43: Optional Components

    (1067 mm) UD6 Uninsulated Duct 6 in. (152 mm) i.d. MH841 MH842 Roof Flashing & Thimble See your Heatilator dealer for a complete list of optional components. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...
  • Page 44 Heatilator, a brand of Hearth & Home Technologies 7571 215th Street West, Lakeville, MN 55044 www.heatilator.com Please contact your Heatilator dealer with any questions or concerns. For the location of your nearest Heatilator dealer, please visit www.heatilator.com. Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16...

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Lm42-ss

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