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IMPORTANT: Even though a minimum of only 12 inches is required, 18 inches or more is
suggested, especially in cases where sprinkler heads are over the installation and
service.
IMPORTANT: When fire sprinkler systems are located above the dryers, a minium 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 base of installation and maintenance. Allowances must be
made for the opening and closings of the control door and the lint door.
D. MAKE UP AIR REQUIREMENTS
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 make-up air is inadequate, drying time and efficiency will be adversely affected. Ignition problems and sail
switch “fluttering” problems may result, as well as premature motor failure from overheating.
Air supply (make-up 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 1,200 cfm (cubic feet per minute) must be
supplied to each gas and electric dryer. As a general rule, an unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1-1/2 square feet is required for each dryer.