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7.6 Combination Venting
7.6.1 Natural Gas Installations
IMPORTANT: The vertical vent heat shield included with this fireplace
must be installed for all venting configurations. The horizontal vent
heat shield must be installed when incorporating minimum horizontal
venting. Refer to 7.8 on page 30.
IMPORTANT: Horizontal vent sections require ¼ in (6 mm) rise for every
12 in (305 mm) of travel.
Table 7.2, NG - Minimum Horizontal Vent Terminations
Minimum
Minimum
Vertical Vent Pipe
Horizontal Vent Pipe
12 in
305mm
+ 6 in
+ 152mm
Minimum Vertical Vent Pipe, Min. / Max. Horizontal Terminations:
12" + 6" (305mm + 152mm) minimum vertical vent pipe + 90°
horizontal elbow + 9" (229mm) minimum horizontal vent pipe / 36"
(914mm) maximum horizontal run + termination cap
Table 7.3, NG - Max Vertical / Max Horizontal Combination
Maximum
Maximum
Vertical Rise
Horizontal Run
25 ft
7.6 m
Maximum number of 90° elbows: 5
Figure 7.2, Natural Gas Combination Venting
#SLA-60 R.8 March 2022
Maximum
Horizontal Run
9 in
229 mm
36 in
Total Length
25 ft
7.6 m
50 ft
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
DIAG.2 NATURAL GAS MINIMUM HORIZONTAL VENTING
(A) Stand-off Brackets
(B) Stand-off Heat Shields
(C) 90° Elbow
914 mm
15.2 m
(D) Vertical Vent Heat Shield
(E) Horizontal Vent Heat Shield
(F) Termination Cap
VENTING 27
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