12
130112_Rev 2 GF 160 DV 1/22
Figure 6.10. 36” Snorkel termination and mantle clearance.
2 FT. MAX. HORIZONTAL RUN (A) TO SNORKEL TERMINATION
Continued from page 11.
Figure 6.9. 14” Snorkel termination.
14" SNORKEL WILL REQUIRE 12 " VENT OFF STOVE TO MEET
MINIMUM RISE REQUIREMENT
2 FT. MAX. HORIZONTAL RUN (A) TO SNORKEL TERMINATION
Max. Mantle Depth
24
61cm
35 1/2
90.2 cm
2 1/2
64 mm
41 1/8
104.4 cm
77 1/8
195.9 cm
36
91.4 cm
2
Min. Mantle
Clearance
46 3/4
118.7 cm
Figure 6.8. Minimum vent required for horizontal termination.
Any horizontally terminated vent run must include a minimum 2 ft. (61
cm) vertical rise.
At minimum vertical run, the total horizontal run (A) must not exceed
5 ft. (152.4 cm).
67
170.2 cm
35 1/2
902 mm
Max.
Alcove Depth
24
61cm
2
51mm
63 7/8
162.2 cm
2
69
175.3 cm
Install a Vinyl Siding Standoff (M&G Dura-Vent #950)
between the vent termination and an exterior wall covered by
vinyl siding material to prevent potential heat damage to the
siding.
SNORKEL TERMINATION:
• HORIZONTAL RUN MUST NOT EXCEED 2 FEET (61
CM
).
A 14” (356mm) or 36” (914mm) snorkel termination
is approved in conformance with the vent rise/run and
termination clearance specifications published in this manual.
See figs. 6.9 – 6.10.
The snorkel termination must comply with grade and building
clearance requirements per local and national building codes.
45°
Elbow
Wall
Thimble
and Trim
Collar
3 3/8
(86 mm)
3 3/8
(86 mm)
Figure 6.7.
Horizontal termination clearance to exterior corner.
From Top Surface: 2” (51 mm)
From Sides: 1” (25 mm)
DO NOT FILL AIR SPACE WITH ANY TYPE OF
INSULATION.
Any horizontal run of vent must be level or have a
1/4 in. rise for every foot of run toward the termination cap.
NEVER ALLOW THE VENTING TO RUN DOWNWARD
FROM STOVE TO TERMINATION; A DOWNWARD
VENT RUN TRAPS HEAT AND CREATES A FIRE
HAZARD.
The horizontal termination cap must maintain a 3” clearance
to any overhead combustible projections
2 1/2” or less. It must also maintain 12” clearance from
projections exceeding 2 1/2”. See fig. 6.11.
A direct vent terminal may not be recessed into a wall or
siding.