Instructions / Assembly

22
WHL-004 REV. 5.26.17
Figure 7 – Vent Termination Detail
DESCRIPTION
US
CANADA
A
Clearance above grade, veranda, porch, deck, or balcony
1 foot (30 cm)
B
Clearance to window or door that may be opened
Direct
Vent
1 foot
3 feet (91 cm)
Power
Vent
4 feet below or to side of
opening; 1 foot above opening
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
*
I
Clearance to service regulator vent outlet
*
Above a regulator within 3 feet
(91 cm) horizontally of the
vertical center line of the
regulator vent outlet to a
maximum vertical distance of
15 ft (4.5 m)
J
Clearance to non-mechanical air supply inlet to
building or the combustion air inlet to any other
appliance
Direct
Vent
1 foot
3 feet (91 cm)
Power
Vent
4 feet below or to side of
opening; 1 foot above opening
K
Clearance to a mechanical air supply inlet
3 feet above if within 10 feet
horizontally
6 feet (1.83 cm)
L
Clearance above paved sidewalk or driveway
located on public property
Direct
Vent
*
7 feet (2.13 m)
Power
Vent
7 feet
M
Clearance under veranda, porch, deck, or balcony
*
1 foot (30 cm)
Table 11 – 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.