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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. Long radius turns offer reistance to airflow.
5. The size of the duct work should be a minimum of 10 inches if vented vertically and 8 inches if vented horizontally.
6.
The inside duct work should be as smooth as possible with no projections from sheet metal screws.
Ducts should overlap the duct to which it is to be connected.
7. All duct joints should be taped to prevent moisture and lint form escaping into the building.
8.
Inspection or clean out doors should be installed at strategic points in the duct work for periodic inspection and
cleaning.
9. Where ever the duct passes through combustible materials, the opening must be 2 inches 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 should 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 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.).
13. WARNING - DRYER MUST NEVER BE OPERATED WITH OUT THE LINT FILTER and SCREEN IN PLACE.
14. Exhaust duct work outlets should not be located in an area directly where the makeup air openings are located.
15. Make-up air opening must be a minimum of one square foot for each dryer. Common make-up openings are
acceptable.
COMMERCIAL MULTI LOAD DRYERS - MDG30, MC2, PC2, PNA, and MNA
07/02
6-7
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