Part number 550-143-010/1021
35
GV90+
series
2
gas-fired water boiler – boiler manual
Vent termination requirements
Figure 41
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 - latest edition 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 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. (1.22m) 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.