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10 American Dryer Corp. 113226-6
NOTE: Allowances must be made for the opening of the control door.
Dryers may be positioned sidewall to sidewall. However, a 1/16” (1.58 mm) minimum allowance must be made
for the opening and closing of the control door. It is suggested that the dryer be positioned about 2 feet (0.61
meters) away from the nearest obstruction for ease of installation, maintenance, and service (to be measured
from the back guard). Refer to the illustration above for details.
NOTE: Air considerations are important for proper and efficient operation.
IMPORTANT: Even though a minimum of only 12-inches (30.48 cm) is required, 24-inches
(60.96 cm) 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
(45.72 cm) above the dryer console (module) is required.
D. FRESH AIR SUPPLY 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 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 (make-up air) must be given careful consideration to ensure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An airflow of 1,000 cfm (cubic feet per minute),
(28.3 cmm [cubic meters per minute]) must be supplied to each dryer. As a general rule, an unrestricted air
entrance from the outdoors (atmosphere) of a minimum of 1-1/2 square feet (0.14 square meters) is required for
each dryer. (Calculation based on 1 inch
2
[6.4516 cm
2
] per 1,000 Btu [251.9958 kcal].) The dryer must be
installed with provisions for adequate combustion and make-up air supply.