17
IMPORTANT VENTING REMINDERS
1. Duct work size and installation
should be
done by a qualified professional.
2. The dryer
must be
exhausted to the outdoors.
3. Duct work
should be
routed as short as possible to the outdoors with as few elbows as possible.
4. Avoid 90° turns, use 30° or 45° turns instead.
5. The size of the duct work
must be
a minimum
of 8-inches (20 cm) for short horizontal runs and
10-inches (25 cm) for vertical runs
or long horizontal runs (see pervious page).
6. The inside of the duct work
should be
as smooth as possible with no projections from sheet metal screws.
Ducts added
should overlap
the duct to which it is to be connected.
7.
ALL
ducts
should be
taped to prevent moisture and lint from escaping into the building.
8. Inspection or clean out doors
should be
installed throughout strategic points in the duct work for periodic
inspection and cleaning.
9. Wherever the duct passes through combustible materials, the opening
must be
2 inches (5 cm) larger (all the
way around) than the duct. The duct
must be
centered within this opening.
10. The outside of the duct work
must be
protected from the weather. A 90° elbow
must be
used for horizontal
run and when vertically through a roof by using a 180° turn to point the opening downward. The distance
between the exhaust duct and the nearest obstruction (i.e., roof or ground)
must be
twice the diameter of the
duct.
11.
DO NOT
use screens or caps on the outside opening of the exhaust duct work.
12. Exhaust back pressure measured by a manometer at the dryer exhaust duct area
must not
exceed 0.3
inches of water column (W.C.) or 0.75 mbar.
13. Exhaust duct work outlets
should not be
located in an area directly where make-up air openings are
located.
14. WARNING - DRYER
MUST
NEVER
BE
OPERATED WITHOUT THE LINT FILTER/SCREEN IN
PLACE...EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.