Hearth and Home Technologies EL42, EL36 owner manual Design and Installation Considerations, Draft

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B. Design and Installation Considerations

Notice: Check building codes prior to installation.

Installation MUST comply with local, regional, state and national codes and regulations.

Consult insurance carrier, local building inspector, fire officials or authorities having jurisdiction over restrictions, installation inspection and permits.

Before installing, determine the following:

Where the fireplace is to be installed

The vent system configuration to be used

Gas supply piping

Electrical wiring

Framing and finishing details

Whether optional accessories—devices such as a fan, wall switch or remote control­—are desired

C. Draft

Draft is the pressure difference needed to vent fireplaces successfully. When a fireplace is drafting successfully, all combustion byproducts are exiting the home through the chimney.

Considerations for successful draft include:

Preventing negative pressure

Location of fireplace and chimney

NoTICE: Hearth & Home Technologies assumes no responsibility for the improper performance of the fireplace system caused by:

Inadequate draft due to environmental conditions

Downdrafts

Tight sealing construction of the structure

Mechanical exhausting devices

Improper location of the chimney

D. Negative Pressure

Warning! Risk of Asphyxiation! Negative pressure can cause spillage of combustion fumes and soot. Fire must draft properly for safe operation.

Negative pressure results from the imbalance of air avail- able for the fireplace to operate properly. It can be stron- gest in lower levels of the house.

Causes include:

Exhaust fans (kitchen, bath, etc.)

Range hoods

Combustion air requirements for furnaces, water heaters and other combustion appliances

Clothes dryers

Location of return-air vents to furnace or air conditioning

Imbalances of the HVAC air handling system

Upper level air leaks such as:

-Recessed lighting

-Attic hatch

-Duct leaks

To minimize the effects of negative air pressure:

Install the outside air kit with the intake facing prevailing winds during the heating season

Ensure adequate outdoor air for all combustion appliances and exhaust equipment

Ensure furnace and air conditioning return vents are not located in the immediate vicinity of the fireplace

Avoid installing the fireplace near doors, walkways or small isolated spaces

Recessed lighting should be a “sealed can” design

Attic hatches weather stripped or sealed

Attic mounted duct work and air handler joints and seams taped or sealed

Basement installations should be avoided

NoTICE: Hearth & Home Technologies Inc. recommends the use of direct vent fireplaces in basements.

Heatilator • EL36/EL42 • 4044-132 • Rev AD• 7/12

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Contents Wood Burning Fireplace Hot screen/mesh and glass doors will cause burnsFire Risk Listing Label Information/Location Homeowner Reference InformationTable of Contents Installer GuideUser Guide Limited Lifetime Warranty Warranty Hearth & Home Technologies IncThis warranty is void if Warranty ConditionsCombustible Materials Listing and Code ApprovalsAppliance Certification Non-Combustible MaterialsOperating Instructions Your FireplaceHot glass will cause burns Firescreen Seasoned WoodStarting a Fire GrateClear Space Glass DoorsVented Gas Log Sets & Gas Log Lighters Optional ComponentsWood Fuel Creosote Formation and Need for Removal Maintenance and ServiceChimney Inspection/Cleaning Disposal of AshesFrequency As desired Glass CleaningCheck Firebox Refractory Inspect GrateStart Fire Problems Possible Cause Solution Troubleshooting GuideTypical Fireplace System Getting StartedDesign and Installation Considerations DraftNegative Pressure Recommended Chimney Locations Locating Fireplace & ChimneyTools and Supplies Needed Fireplace System RequirementsInspect Fireplace and Components Select Fireplace Location Framing & ClearancesClearances to Combustible Materials ClearancesModel # Sidewalls/SurroundsFrame the Fireplace OutsidePlace Protective Metal Hearth Strips Installation of FireplaceThings to Consider Position the FireplaceFt min. from top of uppermost chimney section to air inlet Outside Air Installation Install Outside Air KitChimney Assembly Chimney Requirements Chimney RequirementsSL306 SL312 SL318 SL324 SL336 SL348 Using Offsets/ReturnsExample DegreeAssemble Chimney Sections Install Chimney Air KitInstalling the Ceiling Firestop Install Ceiling FirestopsPrepare Attic Insulation Shield Install Attic Insulation ShieldCut out Hole in Roof Complete InstallationInstall Flashing Following steps should be skipped if using a chaseMultiple Chimney Locations Chimney Termination RequirementsConstruct the Chase Chase InstallationsInstall Chase Top Install Fireplace & ChimneyCap Install Termination CapTS345/TS345P Square Termination Cap Open Top Shroud TR342 caps require radiation shield ShroudsRadiation Shield Field Constructed ShroudsTR342/344 Mailbox Style Shroud radiation shield requiredRoofed Style Shroud radiation shield required TS345 TR342Material Finishing= 1/k x inches of thickness Hearth Extension MinimumModel # Raised Hearth Extension FramingRaised Platform Hearth Extension-Finishing Materi- als Non-combustible SealantDecorative Facing Finishing MaterialClearances to Mantels or other Combustibles above Fireplace Combustible Mantel4 in mm Gas Code, Ansi Z223.1 AccessoriesGas Log/Lighter Provision Wood Burning InsertsReference Materials Fireplace DimensionsAK24 In. HX3 Hearth Extension 13 mmMm HX4 Hearth Extension Bifold Glass Doors DM1036, DM1042Catalog # Chimney ComponentsST375 Square Termination Cap JB877 Chimney Joint BandCeiling Firestop CB876 Chimney Joint BandTCT375 Terra Cotta Cap CT35 Chase TopTS345/TS345P Square Termination Cap Damper Kit Air Handle Part number list on followingService Parts StockedAt Depot Piece Rod EL42EL42 Contact Information