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36092-2-0316
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36092-2-0316
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Termination clearance for buildings with combustible and noncombustible exteriors.
Vertical Sidewall Installations
Important!
Minimum clearance between vent pipes and
combustible materials is 3 inch on top, and 1 inch on bottom and
sides.
Important!
When vent termination exits through foundation less
than 20 inch below siding outcrop, the vent pipe must extend
outward so that the horizontal vent termination is located flush to,
or beyond the outcrop siding.
Information on Various Venting Routes and Components
Important:
It is always best to locate the fireplace in such a way
that minimizes the number of offsets and horizontal vent length.
Since it is very important that the venting system maintain its
balance between the combustion air intake and the flue gas
exhaust, certain limitations as to vent configurations apply and
must be strictly adhered to. See allowed vent configurations,
page 28 to 32.
Figure 11
VENT TERMINATION CLEARANCES
The horizontal vent run refers to the total length of vent pipe from
the flue collar of the fireplace to the face of the outer wall.
Venting termination shall not be recessed into wall or siding.
ATTENTION: Vinyl Soffit, Vinyl Ceiling, Vinyl Overhang
Disclaimer
Clearances are to heat resistant material (i.e. wood, metal).
This does not include vinyl. Empire Comfort Systems Inc.
will not be held responsible for heat damage caused from
terminating under vinyl overhangs, vinyl ceilings or vinyl
ventilated/unventilated soffits.
VENT TERMINATION CLEARANCES
Canadian Installations1
US Installations2
Canadian Installations1
US Installations2
A= Clearance above grade,
veranda, porch, deck, or
balcony
12 in
12 in
I= Clearance to service
regulator vent outlet
3 ft
*
B= Clearance to window or
door that may be open
12 in
9 in
J= Clearance to
nonmechanical air
supply inlet to building or
the combustion air inlet
to any other appliance
12 in
9 in
C= Clearance to
permanently closed
window
12 in
12 in
K= Clearance to a
mechanical air supply
inlet
6 ft
3 ft above if within 10 ft
horizontally
D= Vertical clearance
ventilated soffit located
above the terminal within
a horizontal distance of 2
feet from the center line
of the terminal
24 in
24 in
L= Clearance above paved
sidewalk or paved
driveway located on
public property
7 ft †
7 ft
E= Clearance to
unventilated soffit
12 in
12 in
M= Clearance under
veranda, porch deck, or
balcony
12 in ‡
12 in
F= Clearance to outside
corner
6 in
6 in
1
In accordance with the current CSA B149.1, Natural Gas and Propane
Installation Code
G= Clearance inside corner
9 in
9 in
2
In Accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas
Code
H= Clearance to each side
of center line extended
above meter/regulator
assembly
3 ft within a height
15 ft above the meter/
regulator assembly
3 ft
†
A vent shall not terminate directly above a sidewalk or paved driveway that is
located between two single family dwellings and serves both dwellings
ATTENTION: Vinyl Soffit, Vinyl Ceiling, Vinyl Overhang
Disclaimer
Clearances are to heat resistant material (i.e. wood, metal).
This does not include vinyl. Empire Comfort Systems Inc.
will not be held responsible for heat damage caused from
terminating under vinyl overhangs, vinyl ceilings or vinyl
ventilated/unventilated soffits.
‡
Permitted only if veranda,, porch, deck, or balcony is fully open on a minimum
of two sides beneath the floor.
*
For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, one of
the following shall be indicated:
Clearance in accordance with local installation codes and the requirements of the
gas supplier.