Camus Hydronics Avenger Series - Page 22

17
Direct Vent Terminal Clearances
Canadian Installations
1
US Installations
2
A
Clearance above grade, veranda, porch, deck, or
balcony
12” (30 cm)
12” (30 cm)
B
Clearance to window or door that may be opened
36” (91 cm)
12” (30 cm)
C
Clearance to window or door that may be opened
*
*
D
Clearance to permanently closed window
*
*
E
Clearance to unventilated soffit
*
*
F
Clearance to outside corner
*
*
G
Clearance to inside corner
*
*
H
Clearance to each side of center line extended above
meter/regulator assembly
3’ (91 cm) within a height of
15’ (4.5 m) above the meter/
regulator assembly
*
I
Clearance to service regulator vent outlet
36” (91 cm)
*
J
Clearance to non-mechanical air supply inlet to building
or the combustion air inlet to any other appliance
36” (91 cm)
12” (30 cm)
K
Clearance to a mechanical air supply inlet
6’ (1.83 m)
3’ (91 cm) above if within 10’
(3 m) horizontally
L
Clearance above paved sidewalk or paved driveway
located on public property
7’ (2.13 m)
α
*
M
Clearance under veranda, porch deck, or balcony
12” (30 cm)
β
*
1
In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2
In accordance with ANSI Z223.1/ NFPA 54 National Fuel Gas Code
α
A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and
serves both dwellings
β
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. Clearance in accordance with local installation codes
and the requirements of the gas supplier