ECR International 75 Installation, Operation & Maintenance Manual page 24

Keep vent termination 3' minimum
Vegetation,
(0.9m) away from vegetation. Position
Plants &
termination where vent vapors will not
damage plants/shrubs or air conditioning
Shrubs
equipment.
Vent termination US only - 4' (1.2 m),
Meters,
Canada - 6' (1.83m) horizontally from,
Regulators,
no case above or below, electric meters,
gas meters, regulators, and relief
deck, porch
equipment, or under deck or porch.
Locate vent termination minimum 7'
Walkways
(2.1 m) above any public walkway, with
consideration to condensate.
Locate combustion air and vent termination
People or
to prevent accidental contact with people
Pets
or pets.
Position combustion air and vent
Stones,
termination where it will NOT be damaged
Balls,
by foreign objects, such as stones, balls,
Etc.
etc.
Position termination where vent vapors are
Vapors
not objectionable.
Position termination so it will not be
Eddy,
effected by wind eddy, air born leaves,
Flue
snow, or recirculated vent gases. Give
Gases consideration to excessive wind and locate
away from windward side of building.
6 - COMBUSTION AIR AND VENT PIPING
Vent shall not terminate directly above
Multiple
paved sidewalk or paved driveway located
Family
between two single-family dwellings serving
Dwellings
both dwellings.
24
Termination
3' (0.9 cm)
Minimum
7' (2.1 m)
Minimum