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Venting Installation Tips
Support piping:
· horizontal runs- at least every five (5) feet.
· vertical runs - use braces:
· under or near elbows
Follow items listed below to avoid personal injury or property damage.
· Cut nonmetallic intake pipe with fine-toothed hacksaw (34 teeth per inch).
· Do not use nonmetallic intake pipe or fittings that are cracked or damaged.
· Do not use nonmetallic intake fittings if they are cut or altered.
· Do not drill holes, or use screws or rivets, in nonmetallic intake pipe or fittings.
To make metallic vent joints:
· Do not install seams of vent pipe on bottom of runs.
· 100% Seal all joints and seams with silicone sealant.
WARNING: Examine the venting system at least once a year. Check all joints and vent pipe connections for
tightness, corrosion or deterioration.
NOTE: The words "Flue Exhaust", "Flue" and "Exhaust Vent" are used interchangeably.
VENTING CONFIGURATIONS
For boilers connected to gas vents or chimneys, vent installations shall be in accordance with Part 7, Venting of Equipment,
of the latest edition of National Fuel Gas Code, or in Canada, the latest edition of CAN/CGA-B149.1 and .2 Installation Code
for Gas Burning Appliances and Equipment, or applicable provisions of local building codes.
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Canada Installations - Refer to latest edition of CAN/CGA-B149.1 and .2
A vent shall not terminate:
a) Directly above a paved sidewalk or driveway which is located between two single family dwellings and serves both
dwellings
b) Less than 7 ft.(2.13m)above a paved sidewalk or paved driveway located on public property
c) Within 6 ft(1.8m) of a mechanical air supply inlet to any building
d) Above a meter/regulator assembly within 3 ft(900mm) horizontally of the vertical centre-line of the regulator
e) Within 6 ft.(1.8m) of any gas service regulator vent outlet
f) Less than 1 ft.(300mm) above grade level
g) Within the 3 ft.(1m) 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
h) Underneath a verandah, porch or deck, unless
(i) the verandah, porch or deck is fully open on a minimum of two sides beneath the floor, and
(ii) the distance between the top of the vent termination and the underside of the verandah, porch or deck is greater
than 1 ft(25cm).