18
Another appliance in
home also exhausting
air (furnace, fan,
dryer, etc.)?
Air register from
furnace near
fireplace?
Doors opening
and closing?
Window closed
for start-up?
Outside air
closed?
Overhead fan
operating?
Overhanging
tree?
Bird's nest
or leaves in
termination
cap?
Structural
changes in
chimney area?
Creosote buildup
in flue?
Strong
wi
nd
s a
ro
un
d ch
imney term
inat
ion
?
Unsealed
can lights?
Combustion
air control
Figure 5.1 Factory-built Fireplaces: Troubleshooting
Heatilator • A36/42C, A36/42CH Owners Manual • 4017-263 • Rev D • 05/01/14