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All installations and services must be performed by qualified service personnel.
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d. The vent and intake systems should utilize the same numbers of elbows and approximately
the same length of straight pipe to reach the outside termination.
Figure 3: Typical Relative Locations of Direct Vent Terminations When Sidewall Venting
3. Exhaust Vent Terminal Location Clearance Requirements
a. The vent terminal shall be located at least 3-feet above any forced air inlet located within 10-
feet. Refer to Figure 4 for a depiction of the required clearances.
b. The vent terminal shall be at least 1-foot below, 1-foot horizontally from, or 1-foot above, any
door, window, or gravity air inlet into a building. The bottom of the vent terminal shall be
located at least 12-inches above grade.
c. The vent terminal shall
not
be located over public walkways or over an area where wetting of
surfaces by condensate, or water vapor, could create a nuisance or hazard. In addition, avoid
locations where wetting could be detrimental to the operation of regulators, relief valves, or
any other equipment.
d. A minimum horizontal clearance of 4-feet shall be maintained from the vent terminal to
electric meters, gas meters, regulators and relief equipment.
e. The vent terminal shall be installed a minimum of 14-inches from any obstruction and 3-feet
from an inside corner of an L-shaped structure.