Lennox Hearth VIS35 - Manual (Page 15)

15
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
8’ Max.
Restrictor
Position # 4
Restrictor
Position # 3
Restrictor
Position # 3
Restrictor
Position # 2
No Restrictor
18” Section of Pipe
h
orizontal
t
erminations
The shaded areas in the diagram below show all allow-
able combinations of vent configurations with horizontal
terminations. Horizontal sections of pipe require 1/4” of
rise for every 12” of run. A second 90 degree or 45 degree
elbow (in addition to the first 90 degree elbow at the top of
the vertical length of pipe) is allowed as long as the overall
length of the horizontal run of pipe does not exceed those
shown below. Use the restrictor positions indicated. Note
that if the termination cap falls in the unshaded area below
then no restrictor is installed in the stove.
To install the stove with pipe directly out the back, a snorkel
is not required for the Vintage™ gas stove. A snorkel is re-
quired for the Vintage. See page 13 for snorkel installation
instructions.
v
ertiCal
t
erminations
The diagram below shows all allowable combinations of
straight vertical and offset to vertical vent configurations
with vertical terminations. The termination must fall within
the shaded areas on the diagram. Use the indicated restrictor
positions. Offsets may consist of two 90 degree elbows OR
four 45 degree elbows. The minimum termination height is
10’ and the maximum is 30’.
0 Feet
15 Feet
10 Feet
5 Feet
0 Feet
0 Feet 5 Feet
10 Feet
0 Feet
5 Feet
10 Feet
15 Feet
0 Feet
5 Feet
0 Feet
0 Feet 5 Feet
Figure  Figure 7