Publicité
Minimum Clearances to Vent Termination
Minimum Clearance Requirements
A
Clearance above grade, veranda, porch, deck, or balcony
B
Clearance to window or door that may be opened
C
Clearance to permanently closed window
Vertical clearance to ventilated soffit located above the terminal within a
D
horizontal distance of 2 feet (61 cm) from the center line of the terminal
(check with the local code)
E
Clearance to unventilated soffit
Clearance to outside corner: with AstroCap Termination Cap .
F
Clearance to outside corner: with all other approved Termination Caps .
Clearance to inside comer: with AstroCap Termination Cap
G
Clearance to inside corner: with all other approved Termination Caps
H
Clearance to each side of center line extended above meter/regulator assembly
I
Clearances around meter/regulator
J
Clearance to service regulator vent outlet
Clearance to non-mechanical air supply inlet to building or the combustion air
K
inlet to any other appliance
Clearance to a mechanical air supply inlet
L
#3' (91cm) above if within 1 0' (3m) horizontally .
Clearance above paved sidewalk or a paved driveway located on
M
public property
N
Clearance under veranda, porch, deck, or balcony
Notes:
¹ In accordance with current CSA B149 .1, Natural Gas and Propane Installation Code
² In accordance with the current ANSI Z223 . 1/NFPA 54, National Fuel Gas Code
³ Clearance in accordance with local installation codes and the requirements of the gas supplier
⁴ A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single
family dwellings and serves both dwellings
⁵ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor
⁶ 3 feet (91 cm) within a height of 15 feet (4 .5 m) above the meter/regulator assembly
⁷ 3 feet (91 cm) above - if within 10 feet (3 m) horizontally
Canada¹
USA²
12" (30 cm)
12" (30 cm)
12" (30 cm)
9" (23 cm)
See note³
See note³
29" (74 cm)
29" (74 cm)
20" (51 cm)
20" (51 cm)
7" (18 cm)
7" (18 cm)
14" (36 cm)
14" (36 cm)
7" (18 cm)
7" (18 cm)
12" (30 cm)
12" (30 cm)
13" (33 cm)
36" (90 cm)⁶
See note³
36" (90 cm)
See note³
36" (90 cm)
See note³
12" (30 cm)
9" (23 cm)
72" (1 .8 m)
36" (90 cm)⁷
84" (2 .1m)⁵
See note³
12" (30 cm)
See note³
30
Publicité
