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IMPORTANT: No more then four (4) dryers (eight [8] baskets [tumblers]) can be connected to
one (1) common duct (vent).
NOTE: The distance between the dryer single ducts being connected to the main common duct
must be a minimum of 31-1/2 inches (the dryers width).
The duct work should be laid out in such a manner where allowances are made at the
rear area of the dryer for removal of rear service panels/guards.
IMPORTANT: Individual ducts being added to the main common vent must enter the main common
vent duct work at an angle not more than 45-degree in the direction of the airflow.
The illustration [MAN2171] on the previous page (page 20) shows the minimum cross-section area for
multiple (common) dryer venting.
The maximum length of venting from the last dryer to where it exhausts is the following:
VERTICAL---------venting run must not exceed eight (8) feet.
HORIZONTAL----venting run must not exceed fifteen (15) feet.
These figures must be increased in proportion if the main duct run from the last dryer has numerous elbows or
is unusually long. For extended runs or where more elbows are added, the cross-sectional area of the duct
can only be increased to an extent and a professional HVAC firm should be consulted form proper venting
information.
IMPORTANT: Exhaust back pressure must not exceed 0.3 inches of water column when both
baskets (tumblers) are operating.
NOTE: Inspection doors should be installed at strategic points in the exhaust duct work for periodic
inspection and cleaning