Vent Terminal Clearances - Majestic QUARTZ Series Installation Manual

C. Vent Terminal Clearances
C
V
B
J
B
V
D
V
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.
B clearance to window or door that may be opened, or to permanently closed window
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
F clearance to each side of center line extended above gas meter/regulator assembly
G clearance to gas service regulator vent outlet
clearance to non-mechanical air supply inlet to building or the combustion air inlet to
H
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 minimum of
M two sides beneath the floor.)
vinyl or composite overhang
Figure 4.5 Minimum Clearances for Termination
Majestic • QUARTZ32IFTN/L, QUARTZ36IFTN/L, QUARTZ42IFTN/L Installation Manual • 2641-980 Rev. C • 9/20
16
F
B
V
G
M
V
A
= AREA WHERE TERMINAL IS NOT PERMITTED
X
= AIR SUPPLY INLET
V
= VENT TERMINAL
H or i
X V
H
V V
H
V
A
V
L
K
Electrical
V
Service
C
V
U.S.A. CANADA
12 in. (305 mm) 12 in. (305 mm)
9 in min. 12 in. min.
(229 mm min.) (305 mm min.)
18 in. (457 mm) 18 in. (457 mm)
18 in. (457 mm) 18 in. (457 mm)
30 in. (762 mm) 30 in. (762 mm)
6 in. (152 mm) 6 in. (152 mm)
6 in. (152 mm) 6 in. (152 mm)
3 ft (914 mm)
Clearance in accor-
within a height 15
dance with local in-
ft (4.5 m) above
stallation codes and
the requirements of
the meter/regula-
the gas supplier.
tor assembly
3 ft (914 mm) 3 ft (914 mm)
9 in min. 12 in. min.
(229 mm min.) (305 mm min.)
3 ft (914 mm)*** 6 ft (1.8 m)
7 ft (2.1 m) 7 ft (2.1 m)**
6 in. (152 mm) 6 in. (152 mm)
12 in. (305 mm) 12 in. (305 mm)
18 in. (457 mm) 12 in. (305 mm)*
42 in. (1.1 m) 42 in. (1.1 m)
K
V