Connections
21
Venting Connection (continued)
Vent terminal connection
The vent must be installed observing
local regulations in addition to National
Codes, CAN/CSA-B149.1 or 2, or ANSI
Z223.1. A vent shall not terminate:
1. directly above a paved sidewalk or
paved driveway which is located
between two single-family dwellings
and serves both dwellings;
2. less than 7 ft. (2.13 m) above a
paved sidewalk or a paved driveway
located on public property;
3. within 6 ft. (1.8 m) of a mechanical
air s upply inlet to any building
(clothes dryer vents and non-sealed
combustion furnace and hot water
heater vents should be considered to
be mechanical air inlets);
4. above a meter/regulator as sembly
within 3 ft. (900 mm) horizontally of
the vertical center-line of t he
regulator;
5. within 6 ft. (1.8 m) of any gas
service regulator vent outlet;
6. less than 1 ft. (300 mm) above grade
level or anticipated snow level
(consult local building authorities or
local weather office). Locate the v ent
terminal so that it cannot be blocked
by snow;
7. within the following distances of a
window or door which can be opened
in any building, any non-mechanical
air supply inlet to any building, or the
combustion inlet of any other
appliance:
i) 12 inches (300 mm) (CSA) for
inputs up to and including 100,000
Btu/h (30 kW). Note ANSI requires
4 ft. (1.22 m);
ii)3 ft. (1 m) (CSA) for inputs
exceeding 100,000 Btu/h (30 kW).
Note ANSI requires 4 ft. (1.22 m);
8. underneath a veranda, porch or deck;
9. within 6 ft. (1.8 m) of an inside
corner formed by 2 exterior walls;
10 ft. (3.0 m) or greater is
recommended where possible;
10. within 29” (736 mm) horizontally or
vertically from any soffit not
containing an air intake opening;
11. in areas where condensation may
cause problems, such as above
planters, patios, or adjacent to
windows where flue gases may
cause fogging;
12. within 3 ft. (1 m) to the property
line (advisable, not mandatory -
check with local building authorities
and municipal bylaws);
13. at a location where ice formation on
the ground can present a hazard;
14. so that the f lue gases are directed
towards brickwork, siding, or other
construction, in such a manner that
may cause damage from heat or
condensate from the flue gases ;
15. where discharging hot flue gases
may cause property damage or
personal injury.
5167 450 v1.4
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