Vent Terminations Precautions - DeDietrich 310 ECO Series Installation And Operating Manual

7.3.9 Vent terminations installation precautions:
[Consult national & local codes for other requirements]
All exhaust terminations for conventional chimney must be finished with a finishing cone with tapered end,
with a bird/rodent screen. All sidewall, direct vent, CLV systems must be finished with either a 90° elbow
TEE termination, the combustion air inlet must be a 90° and must be provided with a debris/bird-rodent
screen. All terminals shall be arranged to avoid prevailing winds and prevent the accumulation of flue gas
condensation.
Warning: In all installations avoid vent termination locations where excessive debris or snow could
accumulate leading to blocking of the vent terminals or where prevailing winds and rain could enter the
vent terminal creating additional resistance to the venting system.
Vent terminals should avoid being installed where the building exterior could be tarnished from the flue
gases, a shield or another location should be considered.
than 2 inches [50mm] from the wall surface or more than 10 inches [254mm] from the ℄ of terminal to the
The vent terminals shall be installed according to the instructions as provided terminals shall not be less
wall. For high traffic locations, the vent terminal shall be guarded.
According to the national gas codes [CSA B149 & ANSI Z223.1/NFPA 54] a vent shall not terminate...

Directly above a paved walkway or driveway which serves two or more buildings or where the flue
gas condensation or vapor could create a hazard or improper operation of regulators, relief's or
valves or any other device.

Above or below any electric or gas meter, regulators & relief devices unless a 4ft [1.2m]
horizontal clearance distance to be maintained.

Less than 7ft [2.1m] above any paved sidewalk or driveway.

Less than 6ft [1.8m] from any combustion air inlet source from any nearby building.

Less than 4 ft [1.2m] above a meter/regulator assembly horizontally from a vertical centerline of
the regulator vent outlet to a maximum vertical distance of 15ft [4.6m].

Less than 1ft [03m] above grade or normal snow level in the area is expected.

Less than 3ft [0.9m] from windows, doorways, and combustion air supplies nearby buildings or
other appliances.

Under a veranda, porch or deck, unless [1] the veranda, porch or deck is fully open on at least 2
sides underneath. [2] The distance between the top of the terminal and the grade is greater than
1ft [0.3m].
De Dietrich Gas 310/610 ECO
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