Termination Location And Vent Information; Vent Terminal Clearances - Hearth & Home Outdoor Lifestyles TWILIGHT-IFT NG Installation Manual

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Termination Location and Vent Information

A. Vent Terminal Clearances
C
FP
B
J
B
FP
D
FP
U.S.A. Installations: In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
Canadian Installations: In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
A Clearance above grade,veranda, porch, deck, balcony or roof.
Clearance to window or door that may be opened, or to permanently closed window
B
U.S.A.: = 9 in. min. (229 mm min.)
Clearance below unventilated soffit
C
Clearance below ventilated soffit
Clearance below any vinyl soffits and electrical service
D Clearance to outside corner
E Clearance to inside corner
Clearance to each side of center line extended above gas meter/regulator
F
assembly
G Clearance to gas service regulator vent outlet
Clearance to non-mechanical air supply inlet to building or the combustion
H
air inlet to any other appliance termination (mechanical or non-mechanical)
Clearance to a mechanical (powered) air supply inlet
I ***(All mechanical air intakes within 10 feet of a horizontal termination cap
must be a minimum of 3 feet below termination.)
On public property: clearance above paved sidewalk or a paved driveway.
J
**(A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings
and serves both dwellings.)
Clearance from sides of electrical service
K
Location of the vent termination must not interfere with access to the electrical service.
Clearance above electrical service
L
Location of the vent termination must not interfere with access to the electrical service.
Clearance under veranda, porch, deck, balcony or overhang
*(Permitted only if veranda, porch, deck, or balcony is fully open on a mini-
M mum of two sides beneath the floor.)
Vinyl or composite overhang
Figure 4.1 Minimum Clearances for Termination
14
Outdoor Lifestyles by Hearth & Home Technologies • TWILIGHT-IFT Installation Manual • 2668-970 Rev C • 3/21
F
B
FP
G
M
FP
A
CANADA: = 12 in. min. (305 mm min.)
= AREA WHERE TERMINAL IS NOT PERMITTED
X
= AIR SUPPLY INLET
FP
= FIREPLACE
H or i
X
FP
H
FP
FP FP
H
FP
A
0 in. (0 mm)
35-5/16 in. (897 mm)
35-5/16 in. (897 mm)
64-5/16 in. (1.6 m)
9 in. (229 mm)
12 in. (305 mm)
Clearance in accordance
with local installation
codes and the require-
ments of the gas supplier.
3 ft (914 mm)
9 in. min.
(229 mm min.)
3 ft (914 mm)***
54 in. (1.3 m)
6 in. (152 mm)
12 in. (305 mm)
36 in. (914 mm)
64-5/16 in. (1.6 m)
FP
L
K
K
Electrical
FP
Service
C
FP
U.S.A. CANADA
0 in. (0 mm)
35-5/16 in. (897 mm)
35-5/16 in. (897 mm)
64-5/16 in. (1.6 m)
9 in. (229 mm)
12 in. (305 mm)
3 ft (914 mm) within
a height 15 ft (4.5 m)
above the meter/regula-
tor assembly
3 ft (914 mm)
12 in. min.
(305 mm min.)
6 ft (1.8 m)
54 in. (1.3 m)**
6 in. (152 mm)
12 in. (305 mm)
36 in. (914 mm)*
64-5/16 in. (1.6 m)
FP