Vermont Casting 20DVT Clearance to Combustibles, Mantels, Hearth, Appliance, Venting, Leg Depth

Clearance to Combustibles

Brookhaven Direct Vent Gas Fireplace

Top of Unit to Ceiling	32” (813 mm)
Front of Unit to Combustibles	36” (914 mm)
Appliance
Top of Standoff	0” (0 mm)
Bottom	0” (0 mm)
Side	3/4” (19 mm)
Back	0” (0 mm)
Venting
Concentric sections of DV Vent	1” (25 mm)
Nonconcentric sections of DV Vent
Sides and Bottom	1” (25 mm)
Top	2” (51 mm)

Mantels

The height that a combustible mantel is fitted above the fireplace is dependent on the depth of the mantel. This also applies to the distance between the mantel leg (if fitted) and the fireplace.

For the correct mounting height and widths refer to Figs. 3a and 3b, and the following Mantel Charts.

J I H

CFM164b

		MLK
Side of Fireplace	N
	O

Combustion

Opening

G

F

The fitting of a bay window trim kit does not effect the distances and reference points referred to in the diagram and chart.

Noncombustible mantels and legs may be installed at any height and width around the appliance. When using paint or lacquer to finish the mantel, such paint or lacquer must be heat resistant to prevent discoloration.

								CFM170
			Mantel			Mantel Leg From Side
Ref.		Leg Depth			Ref.		of Comb. Opening
F	12			(305 mm)	K		12”	(305 mm)
G	9”			(229 mm)	L		9”	(229 mm)

Fireplace Front

V

W

X

Y

Z

A B C D E

Maintain minimum 2¹⁄₂” (64 mm) clearance to combustible

Fireplace

Top of Combustion

Chamber

CFM146

H	6”	(152 mm)	M	6”	(152 mm)
I	4”	(102 mm)	N	4”	(102 mm)
J	3”	(76 mm)	O	3”	(76 mm)
Fig. 3b	Combustible mantel leg minimum installation.

Hearth

A hearth is not mandatory but is recommended for aesthetic purposes. We recommend a noncombustible hearth which projects out 12” (305 mm) or more from the front of the fireplace.

Cold climate installation recommendation:

When installing this unit against a non-insulated exterior wall or chase,

			Mantel Chart
		Mantel Shelf			Mantel from Top of
Ref.		or Breast Plate		Ref.	Combustion Chamber
			Depth			20DVT
V		10”	(254 mm)	A	18¹⁄₂”	(470 mm)
W		8”	(203 mm)	B	16¹⁄₂”	(419 mm)
X		6”	(152 mm)	C	14¹⁄₂”	(368 mm)
Y		4”	(101 mm)	D	12¹⁄₂”	(318 mm)
Z		2”	(51 mm)	E	10¹⁄₂”	(267 mm)
Fig. 3a	Combustible mantel minimum installation.

it is mandatory that the outer walls be insulated to conform to applicable insulation codes.

Proposition 65 Warning: Fuels used in gas, wood- burning or oil fired appliances, and the products of combustion of such fuels, contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm.

California Health & Safety Code Sec. 25249.6

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