Hearth and Home Technologies ST42A Getting Started, Design and Installation Considerations

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2Getting Started

A. Design and Installation Considerations

CAUTION

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 about restrictions, installation inspection and permits.

When planning a fi replace installation, it is necessary to de- termine the following information before installing:

•Where the fireplace is to be installed. See Sections 3 and 4.

•The vent system confi guration to be used. See Sections 5 and 6.

•Gas supply piping. See Section 7.

•Framing and fi nishing details. See Sections 3 and 8.

•Whether optional accessories are desired. See Section 12.

Draft is the pressure difference needed to vent fi replaces successfully. Considerations for successful draft include:

•Preventing negative pressure

•Location of fi replace and chimney

WARNING

Asphyxiation Risk

Negative pressure can cause spillage of combustion fumes and soot. Fire needs to draft properly for safe operation.

B. Negative Pressure

Negative pressure results from the imbalance of air avail- able for the fi replace to operate properly. Causes for this imbalance 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: recessed lighting, attic hatch opening, duct leaks.

To minimize the effects of negative air pressure, the follow- ing must be considered:

•Install the outside air kit. Install the intake on the side of the house towards prevailing winds during the heating season.

•Ensure adequate outdoor air is supplied for combustion appliances and exhaust equipment.

•Ensure furnace and air conditioning return vents are not located in the immediate vicinity of the fi replace.

•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 due to stack effect. Stack effect creates negative pressure in lower levels. Hearth & Home Technologies recommends the use of direct vent fi replaces in basements.

Heatilator • ST42A • 35038 Rev G • 02/05

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Contents Fire Risk ST42AListing Label Information/Location Homeowner Reference InformationGrate NumberTable of Contents Not intended for use as a primary heat source Listing and Code ApprovalsAppliance Certification Getting Started Design and Installation ConsiderationsNegative Pressure Asphyxiation RiskMarginal Location Typical Fireplace System Typical Fireplace SystemFire Risk Explosion Risk Tools and Supplies NeededInspect Fireplace and Components Selecting Fireplace Location Framing and ClearancesMm min ClearancesFrame the Fireplace Sidewalls/SurroundsChimney Requirements Construct the ChaseInstall the Outside Air Kit Installation of FireplaceSharp Edges Fire Risk Asphyxiation Risk Risk of Smoke SpillagePosition the Fireplace Secure the FireplacePlace the Protective Metal Hearth Strips Level the FireplaceChimney Assembly C,f SL1106 SL1112 SL1118 SL1136 SL1148 Using Offsets/ReturnsAssemble the Chimney Sections Install the Firestop SpacersSecure the Chimney Install the Attic Insulation ShieldDouble-check the Chimney Assembly Chimney Termination Complete the EnclosureChase Top Install the Chimney Air Kit required in CanadaInstalling an ST1175 Square Termination Cap Install the Termination CapGas Code, Ansi Z223.1-1980 AccessoriesGas Log/Lighter Provisions Hearth Extension Insulation Alternatives, R Value = FinishingHearth Extension Mantel Finishing MaterialGlass Doors General Information Operating InstructionsFirescreen Outside AirClear Space Near the Fireplace Flue DamperWood Fuel GrateFirewood MoistureStarting a Fire Understanding Vent Problems TroubleshootingDiagnostic Questions Diagnostics and Problem SolvingSolutions Can’t get a good fire going. What am I doing wrong?fireplace burns the wood too fast. What can I do? Chimney Inspection/Cleaning Maintenance and Servicing the FireplaceDisposal of Ashes Firebox RefractoryWhen cleaning glass door Maintenance Task ListClean Chimney FireReference Materials Fireplace DimensionsModel # Description Fireplace ComponentsCatalog # Chimney Components15-1/4 387 mm 25-1/4 641 mm 14-3/4 375 mm TR442 TR442 / 444 TV Woodburning Termination CapShroud TS345 TR342 TR342 / 344 TV TR11 / 11T TR11 / 11T TV ST42 Service PartsQty # Description of PartLimited Warranty Contact Information

ST42A specifications

Hearth and Home Technologies ST42A is a highly regarded product in the realm of home heating, known for its excellent combination of functionality, efficiency, and aesthetic appeal. This stylish gas fireplace offers the perfect blend of modern design and superior technology, making it an ideal choice for homeowners seeking both comfort and elegance.

One of the main features of the ST42A is its remarkable heating capacity. With a BTU output ranging from 26,000 to 36,000, it efficiently warms spaces, making it suitable for medium to large living areas. This gas fireplace is designed to deliver heat effectively while maximizing energy efficiency, allowing users to enjoy warmth without incurring excessive energy costs.

The ST42A comes equipped with an advanced electronic ignition system, ensuring reliable startup and operation. This system not only adds convenience but also enhances safety, as it minimizes the risk of gas leaks. The fireplace is designed to operate on natural gas or propane, offering flexibility to homeowners based on their fuel availability and preferences.

In terms of design, the ST42A boasts a contemporary look that fits seamlessly into a variety of interior styles. Its large viewing area, framed by a stylish surround, allows for an impressive flame presentation that serves as a focal point in any room. The variable flame height adjustment feature allows users to customize the ambiance and comfort level, further enhancing the overall experience.

One of the standout technologies in the ST42A is its unique heat distribution system. This feature ensures that warmth is circulated throughout the room, rather than being concentrated in one area, promoting an even temperature distribution. Additionally, the fireplace is equipped with optional blower kits that can enhance air circulation, further improving the efficiency of heat delivery.

Maintenance is another significant consideration with any heating appliance, and the ST42A simplifies this with accessible components and easy cleaning features. The ceramic glass front is designed to resist soot buildup, ensuring a clear view of the flames and reducing the need for frequent upkeep.

Overall, the Hearth and Home Technologies ST42A stands out as a premium choice for those looking to add warmth and style to their home. With its powerful heating capabilities, advanced technologies, and elegant design, it represents an investment in both comfort and aesthetic enhancement for any living space.
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