Vermont Casting DVBR42, DVBR36 manual General Information Assembling Vent Pipes, Flex Vent Pipes

DVBR Series Direct Vent Gas Fireplace

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

Inside Corner Outside Corner Alcove Applications*

			F =
	G =		Combustible
G	Combustible		6"	(152 mm)
	6" (152 mm)	V	Noncombustible
			2"	(51 mm)
	Noncombustible
V			F
	2" (51 mm)

Balcony -	Balcony -
with no side wall	with perpendicular side wall

M	M
V	V
	P
M =	Combustible &
	Noncombustible
Combustible &
	M = 24" (610 mm)
Noncombustible
	P = 20” (508 mm)
12" (305 mm)

D

C C

V

E

O

E = Min. 6” (152 mm) for non-vinyl sidewalls Min. 12” (305 mm) for vinyl sidewalls

O = 8’ (2.4 m) Min.

No.
of Caps	DMin.	CMax.
1	3’ (.9 mm)	2 x DActual
2	6’ (1.8 m)	1 x DActual
3	9’ (2.7 m)	2/3 x DActual
4	12’ (3.7 m)	1/2 x DActual

DMin. = # of Termination caps x 3

CMax. = (2 / # termination caps) x DActual

584-15

*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3’ (914 mm) minimum between termination caps. 2. All mechanical air intakes within 10’ (1 m) of a termination cap must be a minimum of 3’ (914 mm) below the termination cap. 3. All gravity air intakes within 3’ (914 mm) of a termination cap must be a minimum of 1’ (305 mm) below the termination cap.

Fig. 15 Termination clearances.

General Information Assembling Vent Pipes

Canadian Installations

The venting system must be installed in accordance with the current CSA-B149.1 installation code.

USA Installations

The venting system must conform to local codes and/or the current National Fuel Code ANSI Z223.1/NFPA 54.

Only venting components manufactured by CFM Corpo- ration may be used in Direct Vent systems.

Flex Vent Pipes

Before joining the flex vent pipe to the unit, apply a bead of high temperature sealant* (provided) to the 4” pipe exiting the fireplace. Secure flex vent pipe in place with a hose clamp (provided).

*Be sure the flex pipe overlaps at least 1” (25mm) onto the collars of the fireplace and termination. If the ter- mination has an internal bead, be sure to overlap and secure 1” (25 mm) past the bead.

*Be sure the vent is actually crushed before proceed- ing. Apply a tug to be sure the vent will not slip off the collars.

Repeat process with 7” flex vent pipe. The same proce- dure must be performed on the vent side.

Apply High Temperature

Sealant

Hose Clamp

FP1471

Fig. 16 Apply high temperature sealant to 4” and 7” pipes.

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