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Figure 7 – Vent Termination Detail
A
Clearance above grade, veranda, porch, deck, or balcony
B
Clearance to window or door that may be opened
C
Clearance to permanently closed window
Vertical clearance to ventilated soffit located above the terminal
D
within a horizontal distance of 2 feet from the center line of the
E
Clearance to unventilated soffit
F
G
Clearance to each side of center line extended above meter /
H
I
Clearance to service regulator vent outlet
Clearance to non-mechanical air supply inlet to building or the
J
combustion air inlet to any other appliance
K
Clearance to a mechanical air supply inlet
L
Clearance above paved sidewalk or driveway located
M
Clearance under veranda, porch, deck, or balcony
Table 10 – Vent Termination Clearances - *NOTE: 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 requirements of the gas supplier.
B. APPROVED VENT MATERIALS
Consult Table 11 or the most recent edition of ANSI Z223.1/NFPA 54 or CAN/CGA B149.1 as well as all applicable local codes and
regulations when selecting vent pipe materials.
DESCRIPTION
terminal
Clearance to outside corner
Clearance to inside corner
regulator assembly
US
1 foot
1 foot
1 foot
3 feet above if within
10 feet horizontally
NOTICE
CANADA
*
*
*
*
*
3 feet with a height 15 feet
*
above meter / regulator assembly
*
*
*
WHL-015 REV. 1.13.17
21
1 foot
3 feet
*
*
*
*
*
3 feet
3 feet
6 feet
7 feet
1 foot
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