Vent Termination Location Requirements; (For Installations In Canada); Vent Termination Location Requirements (For Installations In The U.s.a.) - Viessmann Vitodens 100-W WB1B Series Installation Instructions Manual

Direct Venting (Two-pipe System)
General Installation Information
Vent termination location requirements (for installation in
Canada)
The vent must be installed observing local regulations in
addition to National Codes, CAN/CSA-B149.1 or 2.
A vent must 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. (1.83) m of a mechanical air supply inlet*
to any building (dryer vents, non-sealed combustion
furnace and hot water heater vents are considered to be
mechanical air inlets).
* 1
Including heat recovery units.
4...above a meter/regulator assembly within 3 ft. (0.9 m)
horizontally of the vertical centerline of the regulator vent
outlet and to a maximum vertical distance of 15 ft. (4.5 m).
5...within 3 ft. (0.9 m) of any gas service regulator vent
outlet.
6...less than 1 ft. (0.3 m) above grade level or anticipated
snow level (consult local building authorities or local
weather office). Locate the vent termination in such a way
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 air inlet
of any other appliance:
1 ft. (0.3 m) for inputs up to and including 100 000
g
Btu/h (30 kW).
3 ft. (0.9 m) for input exceeding 100 000 Btu/h (30 kW).
g
Vent termination location requirements (for installation in
the U.S.A.)
The vent must be installed observing local regulations in
addition to National Codes, ANSI-Z223.1 or NFPA 54.
A vent must NOT terminate...
1...less than 7 ft. (2.13 m) above a paved sidewalk or a
paved driveway located on public property.
2...within 4 ft. (1.2 m) horizontally from service regulator
vents, electric and gas meters as well as relief equipment.
3...at least 3 ft. (0.9 m) above any forced air inlet located
within 10 ft. (3 m).
4...less than 1 ft. (0.3 m) above grade level or anticipated
snow level (consult local building authorities or local
weather office). Locate the vent termination in such a way
that it cannot be blocked by snow.
5...within 1 ft. (0.3 m) 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.
38
Rigid Venting Systems Installation Instructions
(continued)
8...underneath a veranda, porch or deck, unless:
the veranda, porch, or deck is fully open on a minimum
g
of two sides beneath the floor, and
the distance between the top of the vent termination
g
and the underside of the veranda, porch, or deck is
greater than 1 ft. (0.3 m).
1
9...in areas where condensation may cause problems,
such as above planters, patios, or adjacent to windows
where flue gases may cause fogging.
10...within 3 ft. (0.9 m) to the property line (advisable,
not mandatory; please check with local building authorities
and municipal bylaws).
11...at a location where ice formation on the ground can
present a hazard.
12...so that the flue gases are directed toward brickwork,
siding, or other construction, in such a manner that may
cause damage from heat or condensate from the flue gases.
13...where discharging hot flue gases may cause property
damage or personal injury.
14...within 3 ft. (0.9 m) from an inside corner of outside
walls.
6...in areas where condensation may cause problems,
such as above planters, patios, or adjacent to windows
where flue gases may cause fogging.
7...within 3 ft. (0.9 m) to the property line (advisable, not
mandatory; please check with local building authorities
and municipal bylaws).
8...at a location where ice formation on the ground can
present a hazard.
9...so that the flue gases are directed toward brickwork,
siding, or other construction, in such a manner that may
cause damage from heat or condensate from the flue
gases.
10...where discharging hot flue gases may cause property
damage or personal injury.
11...within 3 ft. (0.9 m) from an inside corner of outside
walls.