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2.2 Multiple Fans on Steel Chimney
If two or more chimney fans are required to create sufficient
draft, installation procedures are the same as for single fan
installation on a steel chimney. The only difference is that the
fans are sitting next to each other on the top of the chimney.
When installing multiple fans, it is extremely important that
the fans are of the same model and size.
2.3 Single Fan on Brick Chimney
Step 1: Prepare fan location
The installation procedure is the same whether the flue is
round or square. If a clay tile flue liner is installed, it might
stick up a few inches. Cut it back so it is flush with the
chimney crown.
Measure the inside diameter of the flue, cut a corresponding
hole in the fiber mat leaving a minimum distance of 3/4” to
any side of the fiber mat.
The aluminum foil on the fiber mat must face upwards
(against fan base).
Step 2:
Preparation of fan
Locate the installation brackets in the grooves on the
underside of the fan base using the bolts and nuts supplied,
to secure the brackets. Note that the bolts shall be installed
from the bottom side in the two inner holes.
Adjust the final position of the brackets ensuring that there is
clearance between the brackets and the flue wall. If the
brackets touch the wall, it may generate some vibration
noise.
Step 3:
Attaching the fan
The chimney fan is now ready for installation on the top of the
chimney. Place fiber mat with the aluminum foil facing
upwards on the top of the chimney, and place the fan on
top of the mat.
Caution: Under conditions with extremely strong
winds constantly surrounding the top of the
chimney, the chimney fan must be secured by steel
wires or similar.
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