Vent termination requirements
Figure 25
The vent termination must be located to meet all requirements below (also applies to vertical vent terminations). The minimum
distance from adjacent public walkways, adjacent buildings, openable windows and building in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1. The vent termination clearances below
are for U.S.A., for Canadian vent termination clearances please refer to the requirements of CAN/CSA
B149.1 Natural Gas and
Propane Installation Code. Consideration should be given to avoid possible damage caused by vent plumes and condensate when
choosing a venting configuration and location. Maintain a minimum clearance of 4 ft. (1.22 m) horizontally from, and in no case
above or below, unless a 4 ft. (1.22m) horizontal distance is maintained, from electrical meters, gas meters, regulators, and relief
equipment.
Part number 550-100-131/0120
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Boiler Manual
