#BAY-41-G R.9 Sept 2018
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
VENTING
31
7.7 Rear Venting
IMPORTANT: Horizontal vent sections require ¼ in (6 mm) rise for every
12 in (305 mm) of travel.
IMPORTANT: A wall thimble pass-through must be used on all
horizontal vent runs that pass through interior or exterior walls. Follow
vent manufacturer’s instructions.
7.7.1 Horizontal Terminations
Table 7.6, NG/Propane - Minimum / Maximum Horizontal Venting
Minimum Horizontal Length (H
MIN
)
Maximum Horizontal Length (H
MAX
)
6 in
152 mm
36 in
915 mm
Table 7.7, NATURAL GAS ONLY REAR VENT OPTION
Horizontal Venting
Maximum Horizontal Length
45° elbow
18 in
457 mm
7.7.2 Combination Venting
Table 7.8, NG/Propane - Minimum / Maximum Vertical Terminations
Horizontal to Vertical
Venting
Minimum Vertical
Length
Maximum Vertical
Length
90° elbow
3 ft
914 mm
50 ft
15.2 m
Table 7.9, NG/Propane - Max Vertical / Max Horizontal Combination
Maximum
Vertical Rise
Maximum
Horizontal Run
Total Length
25 ft
7.6 m
25 ft
7.6 m
50 ft
15.2 m
Maximum number of 90° elbows: 4
Figure 7.4, Natural Gas & Propane Rear Vent Combination Venting (H/V)
DIAG.4
REAR VENTING (HORIZONTAL & VERTICAL TERMINATIONS)
(A)
Stand-off Brackets
(B)
Stand-off Heat Shields
(C)
90
°
Elbow
(D)
Horizontal Heat Shield (not
applicable)
(E)
Termination Cap
A
B
A
B
C
D
D
NATURAL GAS AND PROPANE
6” (152mm) HORZ MIN/24” (610mm) HORZ MAX
NG OPTION ONLY:
45° ELBOW +18” (457mm) MAX
NATURAL GAS AND PROPANE
90° ELBOW + 24” (609mm) VERT MIN/50 ft (15.2m
)
