Hearth and Home Technologies RH-36 Series Raised Hearth Extension Framing, Minimum between

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4 in. (102 mm)

 

minimum between

 

bottom of fireplace opening

 

and finished surface of hearth extension

C

 

A

 

B

C

 

 

D

Figure 11.1 Hearth Extension Dimensions

 

Continuous, non-

Fireplace

combustible sealant

Opening

1/2 in. Micore Hearth

Tile, stone or other

 

Extension (or

non-combustible material

4 in.

equivalent insulation)

 

 

(102 mm) min.

See Table 11.2.

 

 

 

Floor constructed of wood or

2 in. (51 mm) of the Protective

Metal Hearth Strip is required

other combustible material

under the front of the fireplace

Figure 11.2 Hearth Extension Construction

Raised Hearth Extension Framing

WARNING! Risk of Fire. A raised hearth extension built flush with the fireplace opening (Figure 11.3) or less than 4 in. (102 mm) below the fireplace opening requires the fireplace be installed on a non-combustible surface.

The hearth framing must be constructed of non-combus- tible materials (Figure 11.2) and placed on 1/2 in. Micore, or equivalent material (Figure 11.4). When creating the platform, allow for the thickness of the non-combustible finishing materials (Figure 11.5).

IMPORTANT! Hearth extension design must be determined before installation of fireplace.

Noncombustible

Material

Noncombustible

Finishing Material

Noncombustible

Framing Material

1/2 in. Micore

 

 

 

 

 

 

 

 

Protective Metal

Floor

or equivalent

Hearth Strips

 

 

insulation

 

 

 

 

 

 

Figure 11.3 Raised Platform Hearth Extension Detail

Noncombustible

Framing Material1/2 in. Micore or equivalent insulation

Figure 11.4 Raised Platform Hearth Extension-Framing Materials

Heat & Glo • RH-36/RH-42 • 4044-153 • Rev W • 11/08

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Contents Fire Risk Wood Burning FireplaceOperation Hot screen/mesh and glass doors will cause burnsListing Label Information/Location GrateNumber Table of Contents Installer GuideUser Guide CONDITIONS, Exclusions & Limitation of Liability Warranty Hearth & Home Technologies Limited WarrantyHeat & Glo RH-36/RH-42 4044-153 Rev W 11/08 Combustible 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 Maintainance and ServiceChimney Inspection/Cleaning Disposal of AshesFrequency As desired Glass CleaningCheck Firebox Refractory Inspect GrateStart Fire Problems Possible Cause Solution Troubleshooting GuideGetting Started Installer GuideDesign and Installation Considerations DraftNegative Pressure Frequently open doors Central heat outlets or returns Locating Fireplace & ChimneyTools and Supplies Needed Fireplace System RequirementsInspect Fireplace and Components Mm all configurations Framing & ClearancesSelect Fireplace Location Clearances to Combustible Materials ClearancesModel # Opening Mensions Sidewalls/SurroundsFrame the Fireplace Outside DiPlace Protective Metal Hearth Strips Installation of FireplaceThings to Consider Position the FireplaceYES Ft min. from top of uppermost chimney section to air inletOutside Air Installation Install Outside Air KitMaintain minimum height of chimney above roof Chimney AssemblyHeight of Chimney Components Chimney RequirementsExample Using Offsets/ReturnsAssemble 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 chaseFlat Roofs Chimney Termination RequirementsConstruct the Chase Chase InstallationsCaulk all seams to prevent leaks Refer to Figure Install Fireplace & ChimneyInstall Chase Top Install as per Sections 7ST375 Square Termination Cap Install Termination CapTCT375 Terra Cotta Cap TS345/TS345P Square Termination CapOpen Top Shroud TR342 caps require radiation shield ShroudsRadiation Shield Field Constructed ShroudsRoofed Style Shroud radiation shield required Mailbox Style Shroud radiation shield requiredRefer to .2 for hearth extension insulation alternatives FinishingHearth Extension = 1/k x inches of thicknessMinimum between Raised Hearth Extension FramingNoncombustible Finishing Materials Non-combustible SealantIn. Micore or equivilent insulation Finishing MaterialClearances to Mantels or other Combustibles above Fireplace Combustible MantelModel Outside Di- mensionsGas Code, Ansi Z223.1 AccessoriesGas Log/Lighter Provision Wood Burning InsertsFireplace Dimensions Reference MaterialsModel # Air Kit Parts 1321 mm 406 mm1676 mm 508 mm 13 mm ID4 Insulated Duct Mm i.d 1067 mm UD4 Uninsulated DuctCatalog # Chimney Components305 mm 24-5/8 625 mm 787 mm Effective Outside Height Diameter 10-1/2 121 mm 267 mm10-1/2 267 mm 305 mm 27-3/8 24-5/8 695 mm 625 mm10-7/8 276 mm Parts Service11/08 Heat & Glo RH-36/RH-42 4044-153 RevDo not Discard this Manual

RH-36 Series specifications

Hearth and Home Technologies has long been an industry leader in innovative heating solutions, and the RH-36 Series exemplifies this commitment to quality and performance. Designed to provide both comfort and efficiency, the RH-36 Series wood-burning fireplace inserts combine advanced technologies with timeless aesthetics, making them a popular choice among homeowners.

One of the standout features of the RH-36 Series is its impressive heat output. With a BTU rating that allows it to efficiently warm large spaces, this appliance is perfect for those chilly winter nights. The expansive firebox is designed to accommodate larger logs, thus extending burn times and reducing the frequency of refueling. This not only enhances convenience but also promotes a more sustainable approach to home heating.

The RH-36 Series also integrates the company’s patented Clean Burn Technology, which maximizes combustion efficiency. This system ensures that the wood is burned at optimal temperatures, resulting in less smoke and emissions. More so, this technology decreases creosote buildup within the chimney, enhancing safety and reducing the need for frequent maintenance.

In terms of aesthetics, the RH-36 Series doesn’t disappoint. Its large glass viewing area showcases the mesmerizing flames, creating a cozy atmosphere in any room. The fireplace insert is available in various finishes and door options, allowing homeowners to customize the look to suit their decor. Whether you prefer a traditional style or a modern finish, the RH-36 can fit seamlessly into your living space.

Furthermore, the RH-36 incorporates user-friendly features that enhance the overall experience. The easy-to-access ash pan allows for quick cleanup and maintenance, while the adjustable air control provides flexibility in regulating the burn rate, allowing users to create the desired ambiance with ease.

In conclusion, the Hearth and Home Technologies RH-36 Series is designed for those who value efficiency, safety, and aesthetic appeal in their heating solutions. With advanced technologies like Clean Burn, excellent heat output, customizable designs, and convenient features, this series stands as a pinnacle of wood-burning fire inserts, promising to deliver warmth and beauty to any home. Whether for cozy family gatherings or peaceful evenings, the RH-36 is a versatile choice that meets diverse heating needs while elevating home interiors.
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