54
VENTING
Hussong Mfg. Co., Inc. • Kozy Heat Fireplaces
#CLW-ST R.1 February 2021
Figure 7.3, Combination Venting Maximum Vertical and Maximum Horizontal - Natural Gas and Propane
7.4.2.1 Natural Gas and Propane Maximum Vertical &
Maximum Horizontal Combination Venting
For maximum vertical and maximum horizontal combination venting,
the vent terminations must be within the shaded area in Figure 7.3.
The vent configurations listed below are shown with rigid pipe.
Flexible pipe may be used for approved venting configurations by vent
manufacturers listed in Section 7.1 Approved Vent Systems on page
50. Refer to the vent manufacturer’s installation instructions.
•
25’ (7.6m) maximum vertical rise + 25’ (7.6m) maximum
horizontal run = 50’ (15.2m) of total length
•
Maximum of (5) 90° elbows.
•
For each additional 90° elbow used after the first horizontal 90°
elbow, 3’ (914mm) must be subtracted from maximum venting
allowed.
•
For each 45° elbow used, 18” (457mm) must be subtracted from
maximum venting allowed.
•
(2) 45° degree elbows may be used in place of (1) 90° elbow.
