DA2 Series Dehumidifier Owners Manual
Installation Ducts
12 Dectron, Inc. November 2009
Data subject to change without notice.
If a unit cannot be installed in the
room as shown previously, it can
be installed elsewhere and the air
can be ducted. The air-delivery
point must remain the same as
shown previously.
Important!
Poor duct design can
reduce the amount of air
delivered.
Duct design must conform to the
ASHRAE low-pressure, low-
velocity duct standards. If there is
a question concerning duct design,
sizing, choice of materials, air
velocities, or static pressures
contact Dectron for assistance.
Air velocities should be kept low
to allow good air movement and
low noise. Higher static pressures
result in higher power requirements
and increased noise. The maxi-
mum external static pressure is
specified for each unit. Static
pressures higher than specified
may reduce air flow below the mini-
mum acceptable value.
Select grilles, registers, and
diffusers for low static pressure
loss, required throw, and specified
air flow.
ΔΔ
Duct material
The DRY-O-TRON
®
is suitable
for use with any duct material, sub-
ject to the requirements of this sec-
tion and standard practice.
Standard galvanized steel duct is
recommended.
All elbows near the unit must be
equipped with aerofoil turning
vanes and acoustic insulation.
Where located in areas below
room temperature, ductwork must
be insulated on the outside with 2-
inch fiberglass wrap with FSK
facing. All ducts must be designed
to be dry. All seams must be
sealed. If a below-grade duct sys-
tem is used, transite or PVC-coat-
ed, round metal ductwork should
be used.
ΔΔ
Flexible duct connectors
Use flexible duct connectors to
attach the ducts to the DRY-O-
TRON
®
. Install the flexible duct in
such a way as to prevent mechani-
cal loads from being applied to the
unit, and to prevent unit vibration
from being transmitted to the duct-
work.
DECTRON
All units must have a minimum of 3 feet of
straight duct connected to the blower outlet,
regardless of any other other duct required.
Regardless of the length of the duct, the end
must be equipped with horizontally and vertically
adjustable louvers.
Duct Isolator
Horizontally
and Vertically
Adjustable
Louvers
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