Bl e d – State GS6 75 YRVHTL User Manual
Page 27

TERMINATION CLEARANCES SIDEWALL POWER VENT
INSIDE CORNER
DETAIL
FIXED
CLOSED
OPERABLE
FIXED
CLOSED
OPERABLE
Vent terminal
Air supply inlet
Area where is not permitted
Gas meter / regulator
C
B
B
B
B
B
J
A
K
M
F
B
L
E
D
I
V
V
V
V
V
V
V
V
V
V
X
X
X
G
A
Figure 28.
Vent terminal clearances for “Power Vent” installations. Power Vent confi gurations use room air for combustion.
A
Clearance above grade,
veranda, porch, deck or
balcony
12 in.
H
Clearance to each side of
center line extended above
meter/regulator assembly
N/A
B Clearance to window or door
that may be opened
4 ft. below or to side
of opening; 1 ft.
above opening
I
Clearance to service regulator
vent outlet
3 ft.*
C Clearance to permanently
closed window
12 in.*
J
Clearance to a non
mechanical air supply inlet into
building or combustion air inlet
to any other appliance
4 ft. below or to side
of opening; 1 foot
above opening.
D
Vertical clearance to ventilated
soffi t located above the
terminal within a horizontal
distance of 2 ft. from the
center line of the terminal
12 in.*
K Clearance to a mechanical air
supply inlet
3 ft. above if within
10 ft. horizontally
E Clearance to unventilated
soffi t
12 in.*
L
Clearance above paved
sidewalk or paved driveway
located on public property
7 ft.†
F Clearance to outside corner
2 ft.*
M Clearance under veranda,
porch, deck, or balcony
12 in.‡
G Clearance to inside corner
18 in.*
In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
† A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the fl oor.
* Clearance in accordance with local installation codes and the requirements of the gas supplier and the
manufacturer’s installation instructions.
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