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Heat & Glo • Crescent II • 2083-902 Rev. G • 9/0510
V
= VENT TERMINAL
X
= AIR SUPPLY INLET
= AREA WHERE TERMINAL IS NOT PERMITTED
Figure 4.4 Vent Termination Minimum Clearances
A = 12 inches ............ clearances above grade, veran-
da, porch, deck or balcony
B = 12 inches ............ clearances to window or door
that may be opened, or to per-
manently closed window. (Glass)
D* = 18 inches ............. vertical clearance to unventilat-
ed soffit or to ventilated soffit lo-
cated above the terminal
*30 inches............ for vinyl clad soffits and below
electrical service
F = 9 inches .............. clearance to outside corner
G = 6 inches ............... clearance to inside corner
H = 3 ft. (Canada) ...... not to be installed above a gas
meter/regulator assembly within 3
feet (90cm) horizontally from the
center-line of the regulator
I = 3 ft. (U.S.A.)
6 ft. (Canada) ....... clearance to gas service regula-
tor vent outlet
J = 9 inches (U.S.A.)
12 inches (Canada)clearance to non-mechanical air
supply inlet to building or the
combustion air inlet to any other
appliance
K = 3 ft. (U.S.A.)
6 ft. (Canada) ......... clearance to a mechanical
(powered) air supply inlet
L** = 7 ft. ......................... clearance above paved side-
walk or a paved driveway lo-
cated on
public property
M*** = 18 inches .............. clearance under veranda, porch,
deck, balcony or overhang
42 inches .............. vinyl
CAUTION: IF EXTERIOR WALLS ARE FINISHED WITH VINYL SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE INSTALLED.
** a vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings and
serves both dwellings.
*** only permitted if veranda, porch, deck or balcony is fully open on
a minimum of 2 sides beneath the floor, or meets Note 2.
NOTE 1: On private property where termination is less than 7 feet
above a sidewalk, driveway, deck, porch, veranda or balcony, use of
a listed cap shield is suggested. (See vents components page)
NOTE 2: Termination in an alcove space (spaces open only on one side
and with an overhang) are permitted with the dimensions specified for
vinyl or non-vinyl siding and soffits. 1. There must be 3 feet minimum
between termination caps. 2. All mechanical air intakes within 10 feet
of a termination cap must be a minimum of 3 feet below the termination
cap. 3. All gravity air intakes within 3 feet of a termination cap must be
a minimum of 1 foot below the termination cap.
M
N
P
R
Q
(See Note 1)
(See Note 1)
(See Note 2)
Electrical
Service
V
S
V
S
V
T
D*
V
NOTE 3: Local codes or regulations may require different
clearances.
NOTE 4: Termination caps may be hot. Consider their proximity
to doors or other traffic areas.
NOTE 5: Location of the vent termination must not interfere with
access to the electrical service.
WARNING: In the U.S: Vent system termination is NOT permit-
ted in screened porches. You must follow side wall, overhang
and ground clearances as stated in the instructions.
In Canada: Vent system termination is NOT permitted in screened
porches. Vent system termination is permitted in porch areas with
two or more sides open. You must follow all side walls, overhang
and ground clearances as stated in the instructions.
Heat & Glo assumes no responsibility for the improper perfor-
mance of the appliance when the venting system does not meet
these requirements.
D
E
B
L
v
v
v
v
v
v
v
v
B
B
A
H
M
X
J or K
I
A
G
F
U.S.
(3 FT)
B
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
Q
MIN
R
MAX
1 cap 3 feet 2 x Q
ACTUAL
2 caps 6 feet 1 x Q
ACTUAL
3 caps 9 feet 2/3 x Q
ACTUAL
4 caps 12 feet 1/2 x Q
ACTUAL
Q
MIN
= # termination caps x 3 R
MAX
= (2 / # termination caps) x Q
ACTUAL
N = 6 inches ................. non-vinyl sidewalls
12 inches .............. vinyl sidewalls
P = 8 ft.
Alcove Applications
S = 6 inches ................. clearance from sides of
electrical service
T = 12 inches................ clearance above electrical
service
(See Note 5)
(See Note 5)