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4
Termination Locations
A. Appliance Opening
Minimum Clearances
D
E
B
L
FP
F
FP
A
= 0" ......................... clearances above grade, veran-
(See Note 1)
B*
= 12" ....................... clearances to window or door
D**
= 31" ....................... vertical clearance to ventilated
E**
= 31" ....................... clearance to unventilated soffit
F
= 9" ........................ clearance to outside corner
G*
= 12" ....................... clearance to inside corner
H
= 3 ft. (Canada) ...... not to be installed above a gas
I
= 3 ft. (U.S.A.)
6 ft. (Canada) ...... clearance to service regulator
*
36" minimum for vinyl windows or vinyl siding.
**
60" minimum for vinyl clad soffits.
*** a appliance shall not open 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 if the screened porch
guidelines are followed.
NOTE 1: Local codes or regulations may require different clearances.
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 terminations or between the appliance and termination. 2. All
mechanical air intakes within 10 feet of a termination must be a minimum of
3 feet below the appliance hood. 3. All gravity air intakes within 3 feet of
the appliance hood must be a minimum of 1 foot below the termination.
Figure 4.1 Minimum Clearances for Appliance Opening
Fire Risk.
Maintain vent termination minimum clearances as specified.
FP
A
B
B
FP
FP
A
da, porch, deck or balcony
that may be opened, or to per-
manently closed window.
soffit located above the hood
within a horizontal distance of 2
feet (60 cm) from the center-line
of the hood
meter/regulator assembly within
3 feet (90cm) horizontally from the
center-line of the regulator
vent outlet and electric service
Heat & Glo LifeStyle Collection • Twilight-II • 2087-900 Rev. G • 12/05
WARNING
Explosion Risk.
= AREA WHERE APPLIANCE IS NOT PERMITTED
X
= AIR SUPPLY INLET
G
H
= APPLIANCE OPENING
FP
M
I
FP
J
= 9" (U.S.A.)
12" (Canada) ........ clearance to non-mechani-
K
= 3 ft. (U.S.A.)
6 ft. (Canada) ......... clearance to a mechanical
L*** = 54" ......................... clearance above paved
M**** = 31" ......................... clearance under veranda,
60" ......................... vinyl
N
= 12" ......................... non-vinyl siding
36" ......................... vinyl siding
P
= 8 ft.
Twilight-II
___________________________________________________________________________
1 additional termination cap
___________________________________________________________________________
2 additional termination caps Q + 6 feet
___________________________________________________________________________
3 additional termination caps Q + 9 feet
This appliance is approved for installation onto screened porches
with the following guidelines:
Minimum porch area: 96 square feet
Minimum ceiling height: 92 inches
Minimum two walls must be screened
Minimum top of screen height, side walls: 6 ft. 8 in.
Minimum screen area: 64 square feet
NOTE: There may be some odor and small amounts of soot
associated with venting the Twilight-II onto a screened porch.
Ensuring good cross draft ventilation and routine maintenance of
the appliance will maximize comfort and cleanliness.
P
R
X
(See Note 2)
J or K
cal air supply inlet to build-
ing or the combustion air in-
let to any other appliance
air supply inlet
(See Note 1)
sidewalk or a paved driveway
located on public property
porch, deck, balcony or overhang
Q
MIN
10 feet
Q + 3 feet
R
= (2 / # caps plus appliance) x Q
MAX
M
N
FP
Q
R
MAX
2 x Q
ACTUAL
1 x Q
ACTUAL
2/3 x Q
ACTUAL
1/2 x Q
ACTUAL
ACTUAL
9
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