24
Vent Pipe Installation & Terminator Position
Description
US Installations
Canadian Installations
Other than Direct Vent
Direct Vent
A Clearance above grade, veranda,
porch, deck, or balcony
1 foot
1 foot
1 foot
B Clearance to window or door that
may be opened
4 feet below or to side of opening;
1 foot above opening
1 foot
3 feet
C Clearance to permanently closed
window
*
*
*
D
Vertical clearance to ventilated
soffit located above the terminal
within a horizontal distance of 2
feet from the center line of the
terminal
*
*
*
E Clearance to unventilated soffit
*
*
*
F Clearance to outside corner
*
*
*
G Clearance to inside corner
*
*
*
H
Clearance to each side of center
line extended above meter/
regulator assembly
*
*
3 feet within a height 15 feet
above the meter/regulator
assembly
I Clearance to service regulator
vent outlet
*
*
3 feet
J
Clearance to non-mechanical air
supply inlet to the building or the
combustion air inlet to any other
appliance
4 feet below or to side of opening;
1 foot above opening
1 foot
3 feet
K Clearance to a mechanical air
supply inlet
3 feet above if within 10 feet
horizontal
3 foot
6 feet
L
Clearance above paved sidewalk
or a paved driveway located on
public property
7 feet
*
7 feet
M Clearance under veranda, porch,
deck, or balcony
*
*
1 foot
*For clearances not specified in ANSI Z223.1 / NFPA 54 or CAN/CSA-B 149.1, please use clearances in
accordance with local installation codes and the requirement of the gas supplier.
Gas meter/Regulater
