Alliance Laundry Systems d355ie1b Manual Do Utilizador

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• Dryer unit exhaust duct should enter the main duct at an 

angle of no more than 30

°

 pointing in the direction of 

the air flow. Ducts entering the main duct from 
opposite sides should be staggered so as not to oppose 
each other. See illustration below.

• Provisions should be made for periodic lint removal 

and cleaning of the main collector duct.

• The outside end of the main duct should have a weather 

hood (with hinged dampers) installed to prevent 
passage of weather elements, insects, dust, and dirt into 
the dryer units.

• If a weather hood cannot be used, the outside end of the 

main duct should have a sweep elbow installed, and be 
directed downward as shown on the following page. If 
the main duct travels vertically through a roof rather 
than through a wall, install 180

°

 sweep elbow on the 

end of the duct with outlet at least 24 inches (61 cm) 
above the highest part of the building.

• Sufficient make-up air must be supplied to replace air 

exhausted from dryer units.

• Damper, Part No. 58786, should be installed in each 

dryer’s exhaust system. This will prevent a backdraft 
when dryer unit is not in use, and will keep the exhaust 
air in balance within the central exhaust system.

IMPORTANT: If several dryer units are exhausted 
into a main collector duct, it is essential that ductwork 
be adequate in size and properly constructed for 
efficient operation.

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