July 12, 2006
Page 9
Heat & Glo · Mission Bay · 250-7512F
CAUTION:
IF EXTERIOR WALLS ARE FINISHED WITH VINYL
SIDING, IT IS SUGGESTED THAT A VINYL PROTECTOR KIT BE
INSTALLED.
Figure 4.4
V
= VENT TERMINAL
X
= AIR SUPPLY INLET
= AREA WHERE TERMINAL IS NOT PERMITTED
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*
= 12 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/regulatorassemblywithin 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
sidewalkor a paved driveway
located on
public
property
M*** = 18 inches .............. clearance under veranda ,
porch, deck, balcony or over-
hang
42 inches .............. vinyl
(See Note 1)
(See Note 1)
S = 6 inches ................. clearance from sides of
electrical service
T = 12 inches ................ clearance above electrical
service
(See Note 3)
(See Note 3)
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_
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_
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
N
= 6 inches ................. non-vinyl sidewalls
12 inches ............... vinyl sidewalls
P
= 8 ft.
Alcove Applications
** a vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings and
*** 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 is suggested. (See vents components pages.)
NOTE 2:
Termination in an alcove space (spaces only open on one side
and withat an overhang) are permitted with the dimensions specified for
vinyl or non-vinyl siding and soffits.
1.
There must be at least 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.
NOTE 3:
Location of the vent termination must not interfere with access
to the electrical service.
NOTE:
Local codes or regulations may require different
clearances.
NOTE:
Termination caps may be hot. Consider their proximity to
doors or other traffic areas.
WARNING: In the U.S.:
Vent system termination is
NOT
permitted
in screened porches. You must follow side wall, overhang and
ground clearances as slated 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 side wall, overhang and
ground clearances as slated in the instructions.
Heat & Glo assumes no responsibility for the improper performance
of the appliance when the venting system does not meet these
requirements.
serves both dwellings.
(See Note 2)
Electrical
Service
V
S
V
S
V
T
D*
V
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
M
N
P
R
Q
R
MAX
= (2 / # termination caps) x Q
ACTUAL
Q
MIN
= # termination caps X 3
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
