FLOAT
DH DH
SWITCH
EXTERNAL
90-2542
ALTERNATIVE EXTERNAL CONTROL
Alternatively, use any other humidity control system as long as it has a dry contact, normally open output dedicated to controlling the dehumidifier�
Reference the installation literature provided with the alternative control for wiring, set-up, and operating details�
FIGURE 12 – ALTERNATIVE EXTERNAL CONTROL WIRING
TO INSTALL AND USE AN ALTERNATIVE EXTERNAL CONTROL,
COMPLETE ALL STEPS:
1. Unplug the dehumidifier or turn off power to the circuit at the
breaker or fuse�
2. Run thermostat cable (use 18-22 AWG wire) from the alternative
external control to the control of the dehumidifier�
3. Trim about 1/4" of insulation from the end of the wires on each
end� Insert the wire into the terminals as shown in FIGURE 12�
4. Restore dehumidifier power�
TO SET THE DEHUMIDIFIER TO USE THE ALTERNATIVE CONTROL,
COMPLETE ALL STEPS:
1. With power to the dehumidifier, use the ON/OFF button to set the
dehumidifier to the OFF position�
NOTE: If the display backlight is not on, the first button press (any
button) will only turn the backlight on� Press the button a second
time to achieve the desired function�
2. Hold the MODE button on the on-board control for 3 seconds to
enter the Installer Set-up Menu�
3. Press MODE again and the display should change to EXTERNAL in
the center, and DISABLED on the right� Use the UP or DOWN arrow
buttons to set this to ENABLED�
4. Once the display reads EXTERNAL ENABLED, press the MODE
button to cycle through the other settings until the display blinks
DONE for 3 seconds�
5. Use the ON/OFF button to turn the dehumidifier ON� The display
on your unit should read EXTERNAL� Even if there is a demand for
dehumidification according to your external control, the dehumidifier
will wait 3 minutes before turning on for the first time only�
12 English
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