Loading ...
Loading ...
Loading ...
15
V Vent Terminal X Air Supply Inlet Area Where Terminal Is Not Permitted
Vent Terminal Clearances - US
Regulator vent outlet in the event no
regulator is present, H and I can be
disregarded.
Fixed
closed
15 ft
Fixed
closed
Inside
corner detail
Operable
Operable
US Installations
1
A= Clearance above grade, veranda, porch, deck, or balcony. 12 in (30 cm)
B= Clearance to window or door that may be opened.
4 ft (1.2 m) below or to side of opening; 1 ft (300 mm) above
opening
C= Clearance to permanently closed window 0 in (0 cm)
D=
Vertical clearance to ventilated soffit located above the
terminal within a horizontal distance of 2 feet (61 cm) from
the center line of the terminal
12 in (30 cm)
E= Clearance to unventilated soffit 12 in (30 cm)
F= Clearance to outside corner 24 in (61 cm)
G= Clearance to inside corner 18 in (46 cm)
H=
Clearance to each side of center line extended above
regulator vent outlet
3 ft (91 cm) within a height 15 ft (4.6 cm)
I= Clearance to regulator vent outlet 3 ft (91 cm)
J=
Clearance to non-mechanical air supply inlet to building or
the combustion air inlet to any other appliance
4 ft (1.2 m) below or to side of opening; 1 ft (300 mm) above
opening
K= Clearance to a mechanical air supply inlet 3 ft (91 cm) above if within 10 ft (3 m) horizontally
L=
Clearance above paved sidewalk or paved driveway
located on public property
7 ft (2.13 m) for mechanical draft systems (Category I
appliances); vents for Category II and IV appliances cannot
be located above public walkways or other areas where
condensate or vapor can cause a nuisance or hazard
M= Clearance under veranda, porch deck, or balcony 12 in (30 cm)
‡
1 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code
* For clearances not specied in ANSI Z223.1/ NFPA 54 the following statement shall be included:
"Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions".
‡
Permitted only if veranda, porch, deck, or balcony is full open on a minimum of two sides beneath the oor.
Loading ...
Loading ...
Loading ...