PARADIGM – INSTALLATION/OPERATION MANUAL
Paradigm
7 Jun 10
2.5.1 REQUIREMENTS FOR CANADA (Figure – 5)
In Canada, based on CSA B139 placement of the vent must ensure that it shall not
terminate:
a) Directly above a paved sidewalk or a paved driveway that is located between two
buildings and that serves both buildings.
b) Less than 2.13 m (7 ft) above any paved sidewalk or any paved driveway (Dimension
“A”).
c) Within 1.8 m (6 ft) of a window, door or mechanical air supply inlet to any building
including soffit openings (Dimension “B”).
d) Above a gas meter/regulator assembly within 1 m (3 ft) of the vertical centerline of the
regulator on a horizontal plane perpendicular to the regulator.
e) Within 1.8 (6 ft) of any gas service regulator vent outlet or within 1 m (3 ft) of an oil tank
vent or an oil tank-fill inlet (Dimension “C”).
f) Less than 0.3 m (1 ft) above grade level (Dimension “D”).
Note: The vent should terminate 0.3 m (1 ft) above the anticipated snow level for the
location.
g) Within 1.8 (6 ft) of any combustion air inlet, unless the furnace is otherwise certified
(Dimension “F”).
Note: When exhaust equipment is not operating it can inadvertently provide a passage for
fumes or products of combustion to leak into a building.
h) With 1.8 m (6 ft) of the property line.
i) Underneath a veranda, porch or deck.
j) So that the flue gases are directed at combustible material or any opening of surrounding
buildings that are within 1.8 m (6 ft).
k) Less than 1 m (3 ft) from an inside corner of an L shaped structure (Dimension “A”).
l) So that the bottom of the vent termination opening is less than 0.3 m (1 ft) above any
surface that may support snow, ice, or debris; and
m) So that the flue 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.
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