DA2 Series Dehumidifier Owners Manual
Installation Piping
14 Dectron, Inc. November 2009
Data subject to change without notice.
DECTRON
Required Clearances
Ducts, pipes, tubes, conduits, etc., must be arranged not to obstruct
access to the unit or to its internal parts. All doors and/or panels
must be accessible and must be able to open to at least 90°. The
minimum working clearances must be maintained. (See section
Lifting & Locating - Select Air Handler Location.)
Unless specified for single-side access, there are access doors
and/or panels
a) horizontal unit - front and back sides, electrical panel
b) vertical unit size 010 - 030 - front, left side
vertical unit size 040 and up - front, back, left side
Pipes, conduits, etc., should not be routed along the floor near a
unit. Where this must be done, construct a working platform
(by others) to allow access without damage.
Do not allow pipes, tubes,
conduits, etc., to obstruct
access panels or doors.
Important!
The condensate drain must be
installed and the P-trap must be
filled before starting the unit.
ΔΔ
Select materials
Ordinary schedule 40 PVC or ABS
plastic pipe is adequate in most
cases. Do not reduce the pipe size
below that provided on the unit.
ΔΔ
Route drain pipe
Route the drain pipe so that the
only trap is the P-trap. In horizontal
runs, slope the pipe downward at
least 1/4” per foot (2 cm per meter).
Deliver the condensate to a suit-
able non-freezing point. Where
installed for a natatorium, conden-
sate may be returned to the pool for
water savings, or it may be sent to a
drain. Check local codes for allow-
able procedures.
ΔΔ
Pipe Support
All tubes, pipes, conduits, etc.,
must be separately supported by
others. Do not apply a torque or
axial load to the unit tube stubs.
ΔΔ
Fill P-trap
To prevent air from being drawn
through the condensate drain pipe,
the P-trap must be filled with water
before
starting the unit blowers.
Failure to do this will cause the drain
pan to overflow during
operation.
ΔΔ
Condensate pump
If a condensate pump must be
used, be sure it has enough pres-
sure and volume capability. If the
condensate is to be delivered to a
pipe that might be pressurized
above atmospheric pressure, install
a check valve to prevent backflow.
Some units have side condensate
drains while others may have con-
densate drains underneath. Bottom-
drain arrangements may have to be
made before the unit is placed.
NOTE: Drains must be protected
against freezing where
freezing is possible. This
may require heat-tracing
and insulation. Condensate
must
be delivered to a non-
freezing point.
NOTE: Where outdoor
temperatures below freezing
may occur, releasing
condensate onto a roof is
not recommended.
Risk of leaking water. Can cause property damage.
This product requires a free-flowing drain.
Freezing or other abnormal conditions could cause leakage or overflow.
NOTICE
Condensate Drain
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