Termination Clearances; Venting Requirements - Natural Vent Only - Century Jefferson Homeowner's Installation And Operating Manual

Jefferson Direct Vent/Natural Vent Gas Heater

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.
Inside Corner
G =
Combustible
G
6" (152 mm)
Noncombustible
V
2" (51 mm)
Balcony -
with no side wall
M
V
M =
Combustible &
Noncombustible
12" (305 mm)
*NOTE: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions
specified for vinyl or non-vinyl siding and soffits. 1. There must be a 3' (914 mm) minimum between termination caps. 2. All
mechanical air intakes within 10' (1 m) of a termination cap must be a minimum of 3' (914 mm) below the termination cap. 3. All
gravity air intakes within 3' (914 mm) of a termination cap must be a minimum of 1' (305 mm) below the termination cap.
Fig. 10 Termination clearances.
36
34
A
32
B
30
28
26
24
22
20
18
16
14
12
10
8
4 6 8
Horizontal Run (in feet)
Fig. 11 Vent termination window - Natural Vent ONLY.
1212
Outside Corner
V
Balcony -
with perpendicular side wall
M
Combustible &
Noncombustible
M = 24" (610 mm)
P = 20" (508 mm)

Venting Requirements - Natural Vent Only

10 12 14 16 18 20 22 24 26 28 30 32 34 36
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F
V
P
A: Vertical installations up to 36' (12m) in
height. Up to an 18' horizontal vent run can be
installed within the vent system using a
maximum of two 90-degree elbows or four
45-degree elbows.
B: Vertical installations up to 36' (12m) in
height. Up to a 24' horizontal vent run can be
installed within the vent system using a
maximum of two 45-degree elbows.
(Ratio = 2/3, Hor./Vert.)
NOTE: When using the FSDHAG, the restrictor
plate supplied with the stove is not used.
FP567
NVBR/NVBC VENTING RUNS
11/12/97
Alcove Applications*
D
C
V
E
O
E
= Min. 6" (152 mm) for
non-vinyl sidewalls
Min. 12" (305 mm) for
vinyl sidewalls
O
= 8' (2.4 m) Min.
No.
of Caps D
Min.
1 3' (914 mm) 2 x D
2 6' (1.8 m)
3 9' (2.7 m)
4 12' (3.7 m)
D = # of Termination caps x 3
Min.
C = (2 / # termination caps) x D
Max.
Venting Runs
= Acceptable venting configuration
= Unacceptable venting configuration
C
C
Max.
Actual
1 x D
Actual
2/3 x D
Actual
1/2 x D
Actual
584-15
Actual
FP567b
30004177