Hearth and Home Technologies A42RH, A36RH owner manual Combustible Mantel, 305 mm

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E. Combustible Mantel

•See Figure 11.4.

•A combustible mantel may be positioned no lower than 12 in. (305 mm) above the top of the ﬁreplace opening.

•A combustible mantel may have a maximum depth of 12 in. (305 mm).

•Combustible trim and materials cannot be placed within 6 in. (152 mm) of the ﬁreplace opening (top or sides).

•Combustible materials projecting more than 1-1/2 in. (38 mm) shall not be placed within 12 in. (305 mm) from the top of the ﬁreplace opening.

•Combustible trim must not cover the metal surfaces of the ﬁreplace.

•Mantel clearance is in accordance with Section 7-3.3.3of ANSI/NFPA211.

F. Sidewalls/Surrounds

•Adjacent combustible sidewalls must be located a minimum of 12 in. (305 mm) from the ﬁreplace opening.

•Combustible or noncombustible mantel legs, surrounds and stub walls may be constructed per Figure 11.5.

	6 ft (1829 mm
	MINIMUM
	base of fireplace
	to ceiling
Combustible Wall	Combustible Decorative Facing
2 x 4 stud wall	12 in./305 mm MAXIMUM
Standoffs	Noncombustible
	Decorative Facing
	12 in.305 mm MINIMUM
Seal joint with
noncombustible
sealant	Measured from top of fireplace opening
Î Figure 11.4 Clearances to Mantels or other Combustibles above Fireplace

10 3/4 in.

[273 mm]

Grid represents 1 in. scale

FLUSH	BRICK
FRONT	FRONT

		angle	A
	50°	angle	39°	angle
			39°

B

4in.

[102 mm]

9 3/4 in.

[248 mm]

12 in.	12 in.
[305 mm]	[305 mm]
			A	B
	Model #		Fireplace Opening	Outside Dimensions
	A36	in.	36	42
	A36	mm	914	1067
		mm	914	1067

	A42	in.	42	48
	A42	mm	1067	1219
		mm	1067	1219

Figure 11.5 Mantel Leg or Wall Projections (acceptable on both sides of opening)

Heatilator • A36R & A42R • 28376 • Rev AF • 11/08

39

Image 39

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 WarrantyHeatilator A36R & A42R 28376 Rev AF 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 ComponentsHardwood vs Softwood Wood FuelMaintainance and Service Chimney Inspection/CleaningDisposal of Ashes Frequency As desired Glass CleaningCheck Firebox Refractory Inspect GrateStart Fire Problems Possible Cause Solution Troubleshooting GuideTypical Fireplace System Getting StartedDesign and Installation Considerations DraftNegative Pressure Frequently open doors Central heat outlets or returns Locating Fireplace & ChimneyInspect Fireplace and Components Tools and Supplies NeededSelect Fireplace Location Fireplace Dimensions .A 1219 mm MinimumMm all configurations Framing & ClearancesClearances to Combustible Materials ClearancesFrame the Fireplace Sidewalls/SurroundsPlace Protective Metal Hearth Strips Installation of FireplaceThings to Consider Position the FireplaceFt min. from top of uppermost chimney section to air inlet Flexible Duct not supplied Install Outside Air KitHood Wire Ties Secure flex duct with metal tape, screws or wire tiesMaintain minimum height of chimney above roof Chimney AssemblyHeight of Chimney Components Chimney RequirementsExample Using Offsets/ReturnsInstall Chimney Air Kit Installing Ceiling FirestopsAssembling Chimney Sections Prepare Attic Insulation Shield Installing Attic Insulation ShieldComplete Installation Install FlashingCut out Hole in Roof Flat Roofs Chimney Termination RequirementsConstruct the Chase Chase InstallationsInstall Chase Top Install Fireplace & ChimneyST375 Square Termination Cap Install Termination CapTCT375 Terra Cotta Cap TS345/TS345P Square Termination CapField Constructed Shrouds Some shrouds require a radiation shield. Use where speciﬁedShrouds Radiation ShieldMailbox Style Shroud radiation shield required Finishing Hearth Extension= 1/k x inches of thickness HX3 or HX4 Hearth Ext or equivilent insulation Finishing Material305 mm Combustible MantelWood Burning Inserts AccessoriesInstall Fan Gas Log/Lighter Provision235 mm 594 mm 244 mm 219 mm 206 mm 108 mm 13-1/2 343 mm 222 mm 22-3/4578 mm 10-1/2 165 mm 267 mm Dia 28376 Gas Knockout Rev Outside 23-3/8 AirCatalog # Description Fireplace ComponentsCatalog # 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 A36R, A36RH Service PartsA42R, A42RH Contact Information