21
11.5
Venting for Vertical Terminations
Table 11.3, All Approved Vertical Venting Systems, Clearances to Combustible Material
Top
Bottom
Sides
Vent Pipe Clearances
1 in. (25 mm)
1 in. (25 mm)
1 in. (25 mm)
11.5.1
Vertical Pipe Clearances
11.5.2
Vertical Termination 8” x 5” Vent Configurations
Natural Gas and LP Gas
Minimum
2 ft. (610 mm) vertical length
+
Termination cap
Maximum
50 ft. (15.24 m)** vertical length
+
Termination cap
**A restrictor is recommended for 30 ft. (9.14 m) to 50 ft. (15.24 m) of venting for vertical terminations if no elbows are used.
Figure 11.4, Appliance shown with 8” x 5”
Minimum Vertical Termination
Vent Configuration
Each installation is unique and affected by various factors including venting configuration, altitude and climate. Therefore, after fireplace
installation is complete, a restrictor (included with fireplace components packet) may be required or may need to be removed or modified.
Please refer to Figure 11.6 on page 22 for installation instructions if installing the restrictor in conjunction with venting. A restrictor may be used
to achieve desired flame appearance on any venting configuration with 6 feet (1.83 m) of vertical pipe or more.
18.3 Restrictors, on page 42, outlines restrictor recommendations depending on burner flame appearance and instructions on installation after
venting is completed.
11.6
Restrictor Assembly and Installation
Termination Cap
MINIMUM: 2 ft. (610 mm)
MAXIMUM: 50 ft. (15.24m)
Stand-off Heat
Shield
Stand-off Heat
Shield
Termination Cap
Reducer
Figure 11.5, Appliance shown with 6-5/8” x 4”
Reducer Minimum Vertical Termination
Vent Configuration
11.5.3
Vertical Termination 6-
5/8” x 4” Reducer Vent Configurations
Natural Gas and LP Gas
Minimum
6-5/8” x 4” Reducer
+
2 ft. (610 mm) vertical length
+
Termination cap
Maximum
6-5/8” x 4” Reducer
+
50 ft. (15.24 m)** vertical length
+
Termination cap
**A restrictor is recommended for 30 ft. (9.14 m) to 50 ft. (15.24 m) of venting for vertical terminations if no elbows are used.
MINIMUM: 2 ft. (610 mm)
MAXIMUM: 50 ft. (15.24m)
