Vermont Casting BHDT36 - Manual (Page 9)

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Outside Corner Inside Corner
Termination Clearances
Termination clearances for buildings with combustible and noncombustible exteriors.
A =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
B =
Combustible
6"(152mm)
Noncombustible
2"(50mm)
A
Balcony -
with no side wall
G =
Combustible&
Non-Combustible
12"(305mm)
G
Balcony -
with perpendicular side wall
H = 24"(610mm)
J = 20"(508mm)
H
J
B
Recessed Location
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)
C
D
C
E
V
V
Combustible &
Non-Combustible
V V
V
Fig. 11
BEAD LOCATION
1" FROM CRIMPED END OF PIPE
1''
Screw Holes
Join pipes and secure joints with three (3) sheetmetal screws. (See Fig. 12) Wipe off excess sealant.
Before joining elbows and pipes apply a bead of high temperature sealant to crimped end of elbow or pipe. (Fig.12)
Fig. 12
GENERAL INFORMATION ON ASSEMBLING
THE VENT PIPES WITH CRIMPED ENDS