An open vent terminal from a drainage system shall not be located less than 4 feet (1219 mm) directly beneath any door, openable window, or other air intake opening of the building or of an adjacent building, nor shall any such vent terminal be within 10 feet (3048 mm) horizontally of such an opening unless it is not ...
No vent terminal shall be located directly beneath any door, window, or other ventilating opening of a building or of another building, nor shall any such vent terminal be within 10 feet horizontally of such opening unless it is at least 2 feet above the top of such opening.
The exhaust terminations that penetrate through the exterior walls or roof will need to be located 3 feet (914 mm) from windows that are providing the natural ventilation to the dwelling unit.
Vent Termination must be at least 9" from windows, doors, or any other opening through which flue gases could enter the building. 12" for more than 50k btu.
The vent terminal shall be at least 4 feet (1219.2 mm) below, 4 feet (1219.2 mm) horizontally from or 1 foot (304.8 mm) above any door, window or gravity air inlet into the building.
For a 1 ½-inc pipe the vent should be 42 inches away at the most while a 2-inch pipe must have a maximum distance of 5 feet. For pipes that have a diameter of 3 inches the distance is 6 feet and for a 4-inch pipe the most it should be away from the vent is 10 feet.
Vent Terminal Clearances
The vent must terminate at least: One foot from windows and doors. Three feet from inside wall corners.
The exact distance will depend on the size of your home but, generally, the regulations prevent a boiler flue from being situated within 30-60cm of a window or door. This is to prevent harmful gases from exiting the flue and then re-entering the property through an open door or window.
Liquid fuel normal vent pipes shall terminate outside of buildings in a nonhazardous location at a point not less than 2 feet (609.6 mm) measured vertically or horizontally from any building opening and not less than 2 feet (609.6 mm) nor more than 12 feet (3657.6 mm) above the fill pipe terminal.
Double wall flue pipes have to be installed in accordance with the manufactures installation instructions. ( generally clearance to combustibles is 6 inches. ) Single wall flue pipes have to comply to CSA B365 requirements. ( generally clearance to combustibles is 18 inches. )
According to Home Inspection Insider, floor vents need anywhere from six to 12 inches of space in all directions to ensure airflow. Your floor vent needs space on each side and overhead. Allow a minimum of six inches on top, and consider the direction of slats or louvers on your vent as well.
Section R303.
When a community adopts this section, it essentially says that bathrooms must have open windows for venting purposes. The code reads that the window must have an "aggregate glazing area...of not less than 3 square feet (0.3 m2), one-half of which must be openable."
If the soil pipe is less than 3m from a window, ensure that the vent sits at least 900mm above said window or opening. You will also need to make sure that the soil pipe sits a minimum of 200mm above the highest water entry point (aka the highest point where wastewater will reach within a soil pipe).
The vent terminal of a direct-vent appliance with an input of 10,000 Btu per hour (3 kW) or less shall be located at least 6 inches (152 mm) from any air opening into a building, and such an appliance with an input over 10,000 Btu per hour (3 kW) but not over 50,000 Btu per hour (14.7 kW) shall be installed with a 9- ...
An open vent terminal from a drainage system shall not be located directly beneath any door, openable window, or other air intake opening of the building or of an adjacent building, and any such vent terminal shall not be within 10 feet (3048 mm) horizontally of such an opening unless it is 3 feet (914 mm) or more ...
Each vent shall terminate not less than 10 feet (3048 mm) from, or not less than 3 feet (914 mm) above, an openable window, door, opening, air intake, or vent shaft, or not less than 3 feet (914 mm) in every direction from a lot line, alley and street excepted.
Outdoor air intakes shall be located at least 25 feet (7.62 m) from exhaust outlets of ventilating systems, combustion equipment stacks, medical-surgical vacuum systems, cooling towers, and areas that may collect vehicular exhaust or other noxious fumes.
Outer ends of vent piping shall terminate in a weather-proof cap or fitting having an unobstructed area equal to or greater than the cross-sectional area of the vent pipe, and shall be located sufficiently above the ground to avoid being obstructed by snow and ice.
Boiler flue separation distances
The positioning of the flue needs to be (a minimum of): 300 mm away from an opening window or air vent. 25 mm below guttering, drain pipes or soil pipes.
The boiler flue terminal should be positioned away from doors, windows or other openings. There should be a space of at least 300mm above, below or to the side of any opening.
Regulations require the flue to be: 300mm away from any openable window or vent. 300mm away from any door.
Vent Terminal Clearances
You can find some version of the diagram below in almost every furnace installation manual, which nicely illustrates these clearances. There's a lot of stuff covered in this diagram, but here are some of the most common offenses. The vent must terminate at least: One foot from windows and doors.
The venting system shall terminate at least 4 feet (1.2 m) below, 4 feet (1.2 m) horizontally from or, 1 foot (0.31 m) above any door, window or gravity air inlet into any building.
Placing the heat vents beneath the windows is actually best for efficiency and proper airflow. Essentially, you want to target your warm air where the home is cold.