Page 25
Dryer Installation with Multiple Exhaust
DRYER INSTALLATION
WITH MULTIPLE
EXHAUST
For Exhaust Duct more than 14 feet and 2 elbows equivalent and more
than 0.6 inches static pressure.
(See illustration on previous page.)
1.
Make-up air from outside building may enter enclosure from top or side
walls. For area of make-up air opening refer to “Minimum Dryer Make-
up Air Requirments” chart at end of manual.
2.
Use constant diameter duct with area equal to the sum of
dryer duct areas.
EXAMPLE: 6-8 inches diameter duct = (1) 19.6 inches
diameter duct in area. Use 20 inches diameter duct or
diameter to match tube-axial fan.
3.
Enclosure (plenum) with service door. This separates the
dryer air from room comfort air. If dryers use room air instead
of outside air, the heat loss can be another 25 Btu/h for each
cubic foot per minute (cfm) used.
4.
Heat loss into laundry room from dryer fronts only is about 60
Btu/h per square foot.
5.
Flange mounted, belt driven tube-axial fan. Fan must be
run when one or more dryers are running. See suggested
Automatic Electrical Control Wiring Diagram on next page.
Must meet local electrical codes. Fan air flow (cfm) is equal
to sum of dryer air flows, but static pressure (SP) is dependent
on length of pipe and number of elbows.
6.
Barometric Bypass Damper - Adjust to closed flutter
position with all dryers and exhaust fan running. Must be
located with enclosure.
CAUTION
Never install hot water heaters or other gas appliances in the same
room as dryers. Never install cooling exhaust fans in the same room as
dryers.
