Vermont Casting DBR33, DBR39, DBR36 Termination Clearances, Rear Venting Applications, D Cc E

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.

Inside Corner

A =

A Combustible 6"(152mm)

Noncombustible

V2"(50mm)

Outside Corner

B = Combustible

6"(152mm)

VNoncombustible

B

Recessed Location

D

CC

E

V

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

G

V

G=

Combustible& Non-Combustible

12"(305mm)

H

V

J

Combustible & Non-Combustible

H = 24"(610mm)

J = 20"(508mm)

C = Maximum depth of 48" (1219mm) for recessed location.

D = Minimum width for back wall of a recessed location. Combustible 38"(965mm) Noncombustible 24"(610mm)

E = Clearance from corner in recessed location. Combustible 6"(152mm) Noncombustible 2"(50mm)

Fig. 13

REAR VENTING APPLICATIONS

Note:	It is not necessary to seal the vent pipe joints for any straight out the wall rear vent applications.
Note:	Vent Starter Kit Model 7DVRVT must be		used in straight out the wall rear vent applications.
Maximum Vent Length		20" (508mm)- Fig. 14

Minimum clearance between vent pipes and combustible materials is one (1") inch (25 mm) on sides and bottom and two (2") inch (50 mm) on top.

When vent termination exits through foundation less than 20" (508mm) below siding outcrop, the vent pipe must flush up with the siding. A 7DVSS must also be used.

	20"	20"
	508mm	508mm
	45°	45°
20" (508mm)
TOP VIEW	TOP VIEW	TOP VIEW
	CROSS CORNER VENT	CROSS CORNER VENT
	TO THE LEFT.	TO THE RIGHT.
		Fig. 14
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