Vermont Casting CR36L, CR36R manual Minimum Wall Clearances, Minimum Hearth Extension Dimensions

Minimum Wall Clearances
	Proposed Parallel Wall
			Wall
40” Min.			Shield
			16”
	Proposed Perpendicular
	Side Walls		FE105
Model	Min. Dist.		Min. Dist. to
	with SP40	Non-protected Wall
	A		B
CR36L	12”		16”
CR36R
Minimum Hearth Extension Dimensions
22” Min.
			Trim Molding
			to Secure
			Hearth Exten-

CR Series Woodburning Fireplaces

Wall Covering
	2x4 Header
Fig. 18	- Do Not Notch
	at Standoffs
Seal Crack
Between
Fireplace
and Hearth
Extension with
Noncombus-
tible Material
May Install Non-
combustible deco-
rative covering OR
.018” Min. Sheet	Fireplace
Metal
	Hearth
Combustible
Floor

Minimum	Safety Strips
	Must Overlap
Insulation
	¹⁄₂” Min.
Value “R”

FS107a

Fig. 22 Hearth extension.

		sion
16”	16”	Hearth
		Extension
		64” Min.
		FE106

Fig. 20 Protection of adjacent combustible side walls and hearth extension dimensions.

COMMON MATERIALS AND FACTORS

MATERIAL	K*	R	MINIMUM
			THICKNESS

EH2416	1.09	0.50 in.**
(CFM Corporation) 0.458

Wall Covering

Noncombustible

Decorative Facing Fig. 18

Seal All Cracks Between Fireplace Surround and Wall Materials with Non- combustible Material

Seal Crack

Between

Fireplace

May Install and Hearth Noncombustible Extension with Decorative Cov- Noncombus- ering OR .018” tible Material Min. Sheet Metal

2x4 Header

- DO NOT Notch at

Standoffs

Fireplace

Hearth

Common Brick 5.0 0.10 5.46 in.**
R Value is for ��� inch.
* Units of K = BTU/SQ FT/HR/˚F/IN
** Thickness of Listed Material	FP533ADD

Fig. 21 Hearth extension material factors.

Combustible
Floor		Minimum	Safety Strips
			must be
	Insulation
			Overlapped
	Value “R”
FS108			¹⁄₂” Min.

Fig. 23 Finish wall treatments and gap sealing.

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