onsen ON-I14L-LP Manuel D'installation Et D'utilisation page 27

Ref
Clearance to non-mechanical air supply inlet to building or the combustion air
J =
inlet to any other appliance
K =
Clearance to a mechanical air supply inlet
L = Clearance above paved sidewalk or paved driveway located on public property
M = Clearance under veranda, porch, deck, or balcony
* Refer to ANSI Z223.1/NFPA 54 or CSA B149.1, for clearances not specified in these requirements, one of the
following shall be indicated:
i) The minimum distance from adjacent public walkways, adjacent buildings, openable windows, and building
openings shall not be less than those values specified in the National Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or
the Natural Gas and Propane Installation Code, CSA B149.1;
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
Notes:
1
In accordance with the 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
If locally adopted installation codes specify clearances different than those illustrated, then the most stringent
clearance shall prevail.
Termination Details
1
Determine the number of elbows of 90 degrees that will be used in the evacuation system (two elbows of
45 degrees being considered as a single elbow of 90 degrees).
2
Refer to the table below to determine the maximum length in function of the number of elbows.
For example: If you have only one elbow, the maximum length will be 10.7 m (35 ft).
0 1
41 ft (12.5 m) 35 ft (10.7 m)
Termination Configuration
VERTICAL TERMINATIONS
The air intake requires a return bend or two 90º elbows to prevent entry of rain.
The vent termination and air intake must be in the same pressure zone.
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Clearance Description
NUMBER OF ELBOWS OF 90º
2
29 ft (8.8 m) 23 ft (7.0 m)
800-996-5559
Canadian Installations (1)
12 in (30 cm)
6 ft (1.83 m)
7 ft (2.13 m) †
12 in (30 cm) ‡
3 4
17 ft (5.2 m)
ENGLISH
US Installations (2)
12 in (30 cm)
3 ft (91 cm) above if within
10 ft (3 m) horizontally
7 ft (2.13 m) *
*
5 6
11 ft (3.4 m) 5 ft (1.5 m)
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