#BAY-41-LE R.5 July 2019
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
VENTING
33
7.6.1.3 Combination Venting
IMPORTANT: Horizontal vent sections require at least ¼ in (6 mm) rise
for every 12 in (305 mm) of travel.
Table 7.3, Natural Gas & Propane - Minimum Vertical Rise / Maximum
Horizontal Run
Minimum Vertical Rise (V
MIN
)
Maximum Horizontal Run (H
MAX
)
15 in
381 mm
48 in
1219 mm
24 in
609 mm
8 ft
2.4 m
36 in
914 mm
12 ft
3.7 m
48 in
1219 mm
20 ft
6.1 m
(i)
Minimum Vertical Rise, Maximum Horizontal Run:
15” (381mm) minimum vertical rise + 90° horizontal elbow +
48” (1219mm) maximum horizontal run + termination cap
24” (609mm) minimum vertical rise + 90° horizontal elbow +
8’ (2.4m) maximum horizontal run + termination cap
36” (914mm) minimum vertical rise + 90° horizontal elbow +
12’ (2.4m) maximum horizontal run + termination cap
48” (1219mm) minimum vertical rise + 90° horizontal elbow +
20’ (6.1m) maximum horizontal run + termination cap
Table 7.4, NG - Max Vertical / Max Horizontal Combination
Max. Vertical Rise
Max. 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 7.2, NG/Propane - Top Vent Combination Venting (V/H)
D
C
A
B
V
MIN
H
MIN
H
MAX
15” (381mm) V
MIN
+ 90° ELBOW + 48” (1219mm)H
MAX
24” (609mm) V
MIN
+ 90° ELBOW + 8’ (2.4m) H
MAX
36” (914mm) V
MIN
+ 90° ELBOW + 12’ (3.7m) H
MAX
48” (1219mm) V
MIN
+ 90° ELBOW + 20’ (6.1m) H
MAX
NATURAL GAS AND PROPANE
(i)
DIAG.3
TOP VENTING (NG & PROPANE COMBINATION VENTING)
(A)
Stand-off Brackets
(B)
Stand-off Heat Shields
(C)
90
°
Elbow
(D)
Termination Cap
