ECR International Olsen OSVB II Series, Installation, Operation & Maintenance Manual, Page: 15 / 40

15
D. Vent Termination
о Venting system shall terminate at least 3 feet
(0.9m) above any forced air inlet located within
10 feet (3m).
о
Venting system shall terminate at least 4 feet
(1.2m) below, 4 feet (1.2m) horizontally from,
or 1 foot (300 mm) above any door, window, or
gravity air inlet into any building.
о
Bottom of vent shall be located at least 12
inches (300mm) above grade.
о
Termination of vent shall be not less than 7 feet
(2.13m) above adjacent public walkway.
о
Vent terminal shall not be installed closer than
3 feet (0.9m) from inside corner of L shaped
structure.
о
Termination of vent should be kept at least 3
feet (0.9m) away from vegetation.
о
United States - Terminate vent system at least
4 feet (1.22m) horizontally from, and in no
case above or below, unless a 4 feet (1.22m)
horizontal distance is maintained, from electric
meters, gas meters, regulators and relief
equipment. See Figure 9.
HORIZONTAL VENTING INSTRUCTIONS
Figure 9 - Horizontal Venting Clearances
о
Canada - Terminate vent system at least 6
feet (1.83m) horizontally from, and in no case
above or below,unless 6 feet (1.83m) horizontal
distance is maintained, from gas and electric
meters, regulators and relief equipment.
о
Venting system shall terminate at least 4 feet
below any eave, soffit, or roof overhang.
о
Venting system shall not terminate underneath
any deck, patio, or similar structure.
о
Place vent on wall away from prevailing winter
wind. Locate or guard vent to prevent accidental
contact with people or pets.
о
Terminate vent above normal snow-line. Avoid
locations where snow may drift and block vent.
Ice or snow may cause boiler to shut down if
vent becomes obstructed.
о
Under certain conditions, flue gas will condense,
forming moisture. Take steps to prevent building
materials at vent terminal from being damaged
by exhaust of flue gas.