#BAY-41-G R.9 Sept 2018
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
VENTING
29
7.6.2 Combination Venting
7.6.2.1 Natural Gas Venting
IMPORTANT: Horizontal vent sections require ¼ in (6 mm) rise for every
12 in (305 mm) of travel.
IMPORTANT: The horizontal heat shield included with this fireplace
must be installed when using a 90° elbow off the top of the appliance.
Table 7.2, NG - Minimum Horizontal Vent Terminations
Minimum
Vertical Rise
Minimum
Horizontal Run
Maximum
Horizontal Run
90° elbow
6 in
152 mm
18 in
457 mm
15 in
381 mm
6 in
152 mm
48 in
1219 mm
24 in
609 mm
6 in
152 mm
8 ft
2.4 m
36 in
914 mm
6 in
152 mm
12 ft
3.7 mm
48 in
1219 mm
6 in
152 mm
20 ft
6.1 mm
Table 7.3, NG - 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
DIAG.2
TOP VENTING (NG HORIZONTAL TERMINATIONS)
(A)
Stand-off Brackets
(B)
Stand-off Heat Shields
(C)
90
°
Elbow
(D)
Horizontal Heat Shield
(E)
Termination Cap
E
C
B
A
E
C
B
A
D
H
MIN
H
MAX
TYPICAL CORNER INSTALL 90° ELBOW + HORIZONTAL PIPE
90° ELBOW + 6” (152mm) H
MIN
/ 18” (457mm) H
MAX
E
C
B
A
V
MIN
H
MIN
H
MAX
15” (381mm) V
MIN
+ 90° ELBOW + 6” (152mm) H
MIN
/ 48” (1219mm) H
MAX
24” (609mm) V
MIN
+ 90° ELBOW + 6” (152mm) H
MIN
/ 8’ (2.4m) H
MAX
36” (914mm) V
MIN
+ 90° ELBOW + 6” (152mm) H
MIN
/ 12’ (3.7m) H
MAX
48” (1219mm) V
MIN
+ 90° ELBOW + 6” (152mm) H
MIN
/ 20’ (6.1m) H
MAX
Figure 7.2, NG - Top Vent Combination Venting (V/H)
