Dectron, Inc. March 2012
DECTRON
DSH/DSV/RSH/DBH/RBH Series Dehumidifier Owner’s Manual
Building Construction Standard Practice for Ducts
Data subject to change without notice.
34
RETURN
DUCT
WRONG
The air will not be evenly distributed
over the evaporator.
WRONG
The air will not be evenly distributed
over the evaporator.
WRONG
Air cannot follow this steep angle.
WRONG
Reduction of airflow will result from
the elbow being too close.
WRONG
Air cannot reach the lower part of the window.
RIGHT
Vanes and straight length
allow air to flow evenly.
RIGHT
Vanes and straight length
allow air to flow evenly.
RIGHT
Air can follow this transition.
RIGHT
Sufficient straight length allows proper airflow.
Flexible duct connection absorbs vibration.
2.5 W
or more
W
Turning Vanes
Turning Vanes
RETURN
DUCT
SUPPLY DUCT
30° or more
20° or less
5W
or more
W
RIGHT
Dry air reaches all the window.
Δ Linear diffusers with volume control.
Δ Register with double deflection and
volume control.
Window set
to outside
Window
set to inside
Always install
vibration isolator.
Always install
vibration isolator.
Always install flexible
duct connection.
BUILDING
CONSTRUCTION