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Heat & Glo LifeStyle Collection • Twilight-II-B • 2108-900 Rev. M • 11/0820
6
6
Termination Locations
D
E
L
FP
A
H
M
X
J or K
I
A
G
F
FP
FP
FP
FP
FP
B
B
B
FP
= APPLIANCE OPENING
X
= AIR SUPPLY INLET
= AREA WHERE APPLIANCE IS NOT PERMITTED
J = 9 in. (U.S.A.)
12 in. (Canada) .......clearance to non-mechani-
cal 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
air supply inlet
L** = 54 in. .......................clearance above paved side-
walk or a paved driveway lo-
cated on public property
M***= 35-5/16 in. ...............clearance under veranda,
porch, deck, balcony or over-
hang
64-5/16 in. ..............vinyl
N = 12 in. ......................non-vinyl siding
36 in. ......................vinyl siding
P = 8 ft.
(See Note 1)
(See Note 1)
(See Note 2)
* 36 in. minimum for vinyl windows or vinyl siding.
** 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 fl oor, or if the screened
porch guidelines are followed.
NOTE 1: Local codes or regulations may require different clear-
ances.
NOTE 2: Termination in an alcove space (spaces open only on
one side and with an overhang) are permitted with the dimensions
specifi ed for vinyl or non-vinyl siding and soffi ts. 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 termi-
nation 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.
This appliance is approved for installation onto screened porches
with the following guidelines:
Figure 6.1 Minimum Clearances for Appliance Opening
NOTE: There may be some odor and small amounts of soot
associated with venting the Twilight-II-B onto a screened
porch. Ensuring good cross draft ventilation and routine
maintenance of the appliance will maximize comfort and
cleanliness.
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
A. Appliance Opening Minimum Clearances
M
N
P
R
Q
FP
A = 0 in ........................clearances above grade, veran-
da, porch, deck or balcony
B* = 12 in. .....................clearances to window or door
that may be opened, or to per-
manently closed window.
D = 35-5/16 in. (
non-vinyl)
64-5/16 in. (vinyl) ......vertical clearance to ventilated
soffi t located above the hood
within a horizontal distance of 2
feet (60 cm) from the center-line
of the hood
E = 35-5/16 in.
(non-vinyl)
64-5/16 in. (vinyl).. ....clearance to unventilated soffi t
F = 9 in. ......................clearance to outside corner
G* = 12 in ......................clearance to inside corner
H = 3 ft. (Canada) ........not to be installed above a gas
meter/regulator assembly within
3 feet (90 cm) horizontally from
the center-line of the regulator
I = 3 ft. ........................clearance to service regulator
vent outlet and electric service
Q
MIN
R
MAX
Twilight-II-B 10 feet 2 x Q
ACTUAL
1 additional termination cap Q + 3 feet 1 x Q
ACTUAL
2 additional termination caps Q + 6 feet 2/3 x Q
ACTUAL
3 additional termination caps Q + 9 feet 1/2 x Q
ACTUAL
R
MAX
= (2 / # caps plus appliance) x Q
ACTUAL