Install Instructions

26
Venting continued-
Through The Roof Venting (Vertical Venting):
Cut the necessary holes through the roof and ceiling and install the vent
connector as shown in Figure 9. Make sure that the installation meets the local
codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or
CGA/CAN B149 Installation Code (Latest Edition).
Figure 9
NOTE: For installations requiring both horizontal and vertical runs, the following
rule must be followed: Total length of straight pipe (both horizontally and
vertically) must not exceed the allowable length listed in Table 4, Table 5
or Table 6 for the total number of elbows used.
Through The Wall Venting With Low Ground Clearance:
When venting cannot exit through the wall at a height greater than or equal to
12 in. (30.5 cm) above the ground, or anticipated snow level, the installation
must be modified as shown below (see Figure 10). Refer to Table 4 for
maximum venting lengths using 2 in. (5.1 cm) vent pipe, Table 5 for maximum
lengths using 3 in. (7.6 cm) vent pipe or Table 6 for maximum lengths using 4
in. (10.2 cm) vent pipe.