DRAIN INSTALLATION
The blower draws air through the
dehumidifier, putting the cabinet under
negative pressure� As a result, the included
P-trap is required for proper draining� The
installed drain fitting on the dehumidifier
is 3/4" FNPT� Use the included fittings to
trap and install the drain� See FIGURE 8�
The drain tubing can be hard pipe or clear
flexible tubing� NOTE: PTFE thread seal
tape is recommended for the threaded
connections and hand tighten only�
Use PVC primer and cement for all slip
fit connections to prevent leaks� After
installing the drain connections, trap, and
tubing, pour enough water (about 2 pints)
into the dehumidifier drain pan to prime
the trap�
If the drain tubing will be installed to a
condensate pump, or if a common drain
tube will serve multiple dehumidifiers
or air conditioners, a vacuum break is
recommended to prevent the p-trap from
being unintentionally siphoned� Install a
T-fitting with a short section of drain tubing
pointed vertically and extending above the
start of the filter (see FIGURE 8)� Install the
vacuum break after the P-trap�
CONDENSATE PAN, CONDENSATE PUMP AND FLOAT SWITCH
A condensate pan is recommended when suspending
the dehumidifier over finished areas or product� Adhere
to local codes regarding draining of the condensate
pan� If a condensate pump is needed, install it in the
condensate pan as well�
Install a condensate overflow safety switch (i�e� float
switch) in the condensate pan, remove the factory
installed jumper wire between the Float Switch
terminals on the control and wire the float switch to the
dehumidifier as shown in FIGURE 9� Overflow safety
switches on condensate pumps can be wired to the
Float Switch terminals in a similar fashion�
3/4" MNPT x 3/4" BARB
(INCLUDED)
3/4" FEMALE PIPE x 3/4" FNPT
(INCLUDED)
3/4" MNPT x
3/4" FEMALE PIPE
(INCLUDED)
3/4" FLEXIBLE TUBE
(INCLUDED)
FLOAT
Switch
DH DH
NORMALLY CLOSED
FLOAT SWITCH
90-2438
90-1857
FIGURE 8 – DRAIN ASSEMBLY
FIGURE 9 – FLOAT SWITCH WIRING
PVC HARD PIPE
(NOT INCLUDED)
OPTIONAL VACUUM BREAK
HIGHER THAN
FILTER FRAME
3/4" PIPE TEE (INCLUDED)
3/4" MNPT x
3/4" FEMALE PIPE
(INCLUDED)
English 7
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