33
Table 11
VENT TERMINAL
AIR SUPPLY INLET
AREA WHERE TERMINAL IS NOT PERMITTED
CLEARANCE LOCATION
CANADIAN INSTALLATIONS
A
US INSTALLATIONS
B
CONVENTIONAL VENT (1-PIPE)
FURNACES
DIRECT VENT
(2-PIPE) FURNACES
CONVENTIONAL VENT
(1-PIPE) FURNACES
Clearance above grade, veranda, porch, deck,
Clearance to window or door
that may be opened.
above opening
Clearance to permanently closed window
above the terminal within a horizontal distance
terminal.
Clearance to outside corner.
Clearance to inside corner.
above meter/regulator assembly.
above the meter/regulator assembly
Clearance to service regulator vent outlet.
building or the combustion air inlet to any other
appliance.
above opening
Clearance to mechanical air supply inlet.
Clearance above paved sidewalk or driveway
located on public property.
c
Clearance under veranda, porch, deck, or
balcony.
d
c: A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
d: Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
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