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IMPORTANT: Even though a minimum of only 12 inches is required, 18 inches or more is
suggested. The additional clearance is advantageous for ease of installation
and service.
IMPORTANT: When fire sprinkler systems are located above the dryers, a minimum of
18 inches above the dryer console (module) is required. Dryers may be
positioned side wall to side wall however, a 1/16" minimum allowance is
required between dryers (or wall) for ease of installation and maintenance.
Allowances must be made for the opening and closings of the control door
and the lint door.
D. FRESH AIR SUPPLY
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and
exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the
makeup air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and sail
switch "fluttering" problems may result, as well as premature motor failure from overheating.
Air supply (makeup air) must be given careful consideration to assure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An air flow of 1,700 cfm (cubic feet per minute) must be
supplied to each gas and electric dryer and 2,500 cfm (cubic feet per minute) must be supplied to each steam
dryer. As a general rule, an unrestricted air entrance from the outdoors (atmosphere) of a minimum of 2-1/2
square feet is required for each dryer.