Openable
See Table 6
V
V
Inside Corner
V
V
Outside Corner Recessed Location
Balcony with No Side Wall
V
Balcony with Perpendicular Side Wall
G
F
M
M
N
P
O
Q
U.S. Installation ** Canadian Installation *
A Clearance above grade, veranda, porch, desk, or balcony 12” (300 mm) ** 12” (300 mm) *
B Clearance to window or door that may be opened 6” (150 mm)
for fireplaces < 10,000 Btu/h (3 kW),
9” (230 mm)
for fireplaces > 10,000 Btu/h (3 kW), and < 50,000 Btu/h
(15 kW),
12” (300 mm)
for fireplaces > 50,000 Btu/h (15 kW) **
6” (150 mm)
for fireplaces < 10,000 Btu/h (3 kW),
12” (300 mm)
for fireplaces > 10,000 Btu/h (3 kW)
C Clearance to permanently closed window 9” (229 mm)
recommended to prevent window condensation
12” (305 mm)
recommended to prevent
window condensation
D Vertical clearance to ventilated soffit located above the
termination within a horizontal distance of 18” (458 mm)
18” (458 mm) 18” (458 mm)
E Clearance to unventilated soffit 12” (305 mm) 12” (305 mm)
F Clearance to outside corner 5” (127 mm)
minimum
5” (127 mm)
minimum
G Clearance to inside corner 6” (152 mm) minimum 6” (152 mm) minimum
H Clearance to each inside of center line extended above
meter / regulator assembly
36” (910 mm)
within a height of 15 ft above the meter / regulator assembly **
36” (910 mm)
within a height of 15 ft above the meter /
regulator assembly *
I Clearance to service regulator vent outlet 36” (910 mm)** 36” (910 mm)*
J Clearance to nonmechanical air supply inlet to building or
the combustion air inlet to any other fireplace
6” (150 mm)
for fireplaces < 10,000 Btu/h (3 kW),
9” (230 mm)
for fireplaces > 10,000 Btu/h (3 kW) and < 50,000 Btu/h (15 kW),
12” (300 mm)
for fireplaces > 50,000 Btu/h (15 kW)**
6” (150 mm)
for fireplaces < 10,000 Btu/h (3 kW),
12” (300 mm)
for fireplaces > 10,000 Btu/h (3 kW)
K Clearance to a mechanical air supply inlet 36” (910 mm) above if within 10 ft (3 m) horizontally ** 72” (1830 mm) *
L Clearance above paved sidewalk or paved diveway located
on public property
84” (2130 mm) ‡ 84” (2130 mm) ‡
M Clearance under veranda, porch, deck or balcony 12” (300 mm) *‡ 12” (300 mm) *‡
N Depth of alcove (maximum) 72” (1830 mm) ** 72” (1830 mm) *
O Clearance to termination (alcove) 6” (15.2 mm) ** 6” (15.2 mm)*
P Width of alcove (minimum) 36” (910 mm) ** 36” (910 mm) *
Q Clearance to combustible above (alcove) 18” (457 mm) ** 18” (457 mm) *
*
**
‡
*‡
In accordance with the current CSA-B149.1 National Gas And Propane Installation Code
In accordance with the curent ANSI Z223.1/NFPA 54 National Fuel Gas Codes
A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings
Only permitted if veranda, porch, deck, or balcony is fully-open on a minimum two sides beneath the floor