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5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Venting
General Venting Information
(continued)
Vent termination location requirements (for installations in Canada)
The vent must be installed observing local regulations in
addition to National Codes, CAN/CSA-B149.1 or 2. The
flexible vent pipe can only be used in vertical installations.
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
*
1
to any building (dryer vents, non-sealed
combustion furnace and hot water heater vents are
considered to be mechanical air inlets).
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
Btu/h / 30 kW.
3 ft. (0.9 m) for input exceeding 100 000 Btu/h / 30 kW.
8
.....underneath a veranda, porch or deck, unless:
the veranda, porch, or deck is fully open on a minimum
of two sides beneath the floor, and
the distance between the top of the vent termination and
the underside of the veranda, porch, or deck is greater
than 1 ft. (0.3 m).
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.
*
1
Including heat recovery units.
Vent Termination Location Requirements (for installations in the U.S.A.)
The vent must be installed observing local regulations in
addition to National Codes, ANSI-Z223.1 or NFPA 54.
The flexible vent pipe can only be used in vertical installations.
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.
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.
