Hearth and Home Technologies RHW-485 Getting Started, Design and Installation Considerations

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2 Getting 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 fireplace 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 configuration to be used. See Sections 5 and 6.

•Gas supply piping. See Section 7.

•Framing and finishing details. See Sections 3, 6 and 8.

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

•Preventing negative pressure

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

Heat & Glo • RHW-485 • 33221 Rev O • 08/06

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Contents Fire Risk Models RHW-485, RHW-485H Woodburning FireplaceNumber Listing Label Information/LocationGrate Table 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 ClearancesClearances to Combustible Materials ClearancesFrame the Fireplace Sidewalls/SurroundsChimney Requirements Construct the ChaseInstall the Outside Air Kit Installation of FireplaceSharp Edges Asphyxiation Risk Risk of Smoke SpillageFt min. from top of uppermost chimney section to air inlet Position the Fireplace Secure the FireplacePlace the Protective Metal Hearth Strips Level the FireplaceChimney Assembly Height of Chimney Components Degree SL306 SL312 SL318 SL324 SL336 SL348 Using Offsets/ReturnsAssemble the Chimney Sections Install the Ceiling FirestopsSecure the Chimney Install the Attic Insulation ShieldDouble-check the Chimney Assembly Chimney Termination Complete the EnclosureChase Top Install the Termination CapInstall the Chimney Air Kit required in Canada Installing an ST375 Square Termination Cap Gas Code, Ansi Z223.1 AccessoriesGas Log/Lighter Provisions Hearth Extension FinishingMantel Finishing MaterialGlass Doors Combustible MaterialGeneral Information Operating InstructionsClear Space Near the Fireplace Outside AirFlue Damper FirescreenWood 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 DimensionsCatalog # Description Fireplace ComponentsCatalog # Chimney Components14-1/2 1829 mm 10-7/8 276 mm 406 mm 508 mm Minimum Base Dimensions 26.5 X 28 with 34 X 34 with Minimum Base Dimensions 28 X 28 with 32 X 32 with 23 XTR442 TR442 / 444 TV 20 xThis page intentionally left blank RHW-485 Service PartsHerringbone Brick Refractory option available week 03/04 Description of Part RHW-485 RHW-485H QtyThis page intentionally left blank Limited Warranty Warranty For Heat & GLO FireplacesDo Discardnot Contact Information

RHW-485, RHW-485H specifications

Hearth and Home Technologies (HHT) is a leader in the manufacture of innovative and high-quality hearth products, and their RHW-485H and RHW-485 models are no exceptions. These wood-burning heaters are designed to provide efficient and effective heating solutions for residential spaces while offering an elegant aesthetic that complements various home decors.

One of the main features of the RHW-485H and RHW-485 is their impressive heating capacity. Both models are designed to heat areas up to 2,000 square feet efficiently, making them ideal for large living spaces or open-concept homes. This significant heating capability is made possible by advanced combustion technology that allows for a longer burn time, ensuring extended warmth throughout the night.

Another defining characteristic of these units is their clean-burning technology. HHT has incorporated a unique air wash system that enhances combustion efficiency and minimizes emissions. This ensures that homeowners can enjoy the beauty and comfort of a wood fire while adhering to environmental standards. Furthermore, these models have received certification from the EPA for meeting stringent guidelines, making them an excellent choice for those who are environmentally conscious.

In terms of design, the RHW-485H features an attractive cast iron door with a large viewing window. This allows for an unobstructed view of the mesmerizing flames and adds a touch of sophistication to any room. The RHW-485, while similar in heating efficiency, offers slightly different aesthetic options, giving homeowners the ability to choose a model that aligns with their personal style.

Both models come equipped with a robust refractory system that enhances heat retention and distribution. This technology ensures that heat is released evenly and efficiently, providing consistent warmth without the need for constant refueling. Additionally, they feature adjustable air controls that allow users to manage burn rates and heat output according to their preferences.

Another important aspect is the ease of installation and maintenance. The RHW-485H and RHW-485 have been designed with user-friendly features, including accessible clean-out ports that simplify ash removal. This reduces the hassle of routine care, allowing homeowners to enjoy their fireplace without extensive upkeep.

In conclusion, Hearth and Home Technologies’ RHW-485H and RHW-485 models are premium wood-burning heaters that combine efficiency, elegance, and environmental responsibility. They offer a perfect blend of modern technology and classic design, making them an excellent choice for discerning homeowners looking to enhance their living space with warmth and style.
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