9
MINIMUM CHIMNEY HEIGHT
The minimum chimney height (measured from bottom of
fireplace to flue gas outlet-end of pipe) is
15 feet
for a straight
run,
16 feet
min. For a run with
1 elbow sets
(a set consists of
one starter elbow and one return elbow).
Uncommon circumstances such as neighboring hills, tall
trees, or strong wind areas can cause
downdrafts
in the chim-
ney system. In such cases going beyond the minimum recom-
mended height would be preferable to provide a better
draw.
MAXIMUM CHIMNEY HEIGHT
The maximum height approved for any chimney run with
this fireplace system is
50 feet
measured from bottom of fire-
place to flue outlet-end of pipe.
CHIMNEY MAINTENANCE
Have your chimney system cleaned and inspected regularly
to ensure safe and efficient operation. Refer to your Owners
Manual for further guidelines on maintenance and operation.
Using figure
24
and the chart below, determine the opening
that will be required for the pitch of your particular roof.
ROOF OPENING CHART
PITCH
OPENING
“A”
USE FLASHING
NO.
FLAT 19 6F10
6/12
(26.6 DEG. SLOPE)
23 ¼
6F10
12/12
(45 DEG. SLOPE)
30 ¾
12F10
18/12
(56.3 DEG. SLOPE)
40 1/8
18F10
24/12
(63.4 DEG. SLOPE)
50 ¼
24F10
Before cutting hole, temporarily remove shingles around area
to be opened. After preparing the opening on the roof, con-
tinue to add sections of pipe until it extends a minimum of
30
inches above highest point of roof cut-out (see figure 24).
With the termination the minimum height should add up
3
feet (see 10-foot rule and figure 22).
Figure 23
Figure 24
