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WIRING
No additional wiring is needed unless:
• the dehumidifier is ducted to the HVAC system
• a separate, external control such as a thermostat or
dehumidistat is to be used
• a float switch, either integral to a condensate pump or
mounted to the condensate pan, is used
Use 18-22 AWG wire for any needed wiring . Access the
dehumidifier wiring terminals by pulling off the wiring access
cover near the dehumidifier control display (see FIGURE 18).
Snap the wiring access cover back into place after completing
all wiring .
FIGURE 18: WIRING ACCESS COVER LOCATION
CONTROL
CONTROL
CONTROL
PANEL
COVER
12
CONTROL
PANEL
COVER
FILTER ACCESS DOOR
90-2017
WIRING TO THE HVAC SYSTEM
When the dehumidifier is ducted to the HVAC system, it is
recommended that it also be wired to the HVAC system as
shown in FIGURE 19 . If ducted to the HVAC system in a return-
to-return configuration, the dehumidifier must be wired to
the HVAC system to prevent short-circuiting dehumidified
air directly back to the dehumidifier inlet. In a return-to-
supply ducting configuration, running the HVAC fan with the
dehumidifier ensures the warm dry air is mixed with room air
before being discharged to the home .
OPTIONAL W & Y WIRING
• Wire the W and/or Y terminal to the HVAC system when using
the ventilation feature of the dehumidifier. See VENTILATION
on page 14 .
• Wire the dehumidifier Y terminal to the HVAC system to
disable the dehumidifier compressor from operating when
the air conditioning is running . See ALLOWING DEH W/AC on
page 17 for additional setup steps required to access this
feature .
FIGURE 19: WIRING TO HVAC SYSTEM
90-2017
EXISTING WIRE
NEW WIRE
THERMOSTAT
OR ZONE
CONTROL BOARD
R
C
G
W
Y
+ - A B
ODT
VENT DEH
Remote
Sensor Dampers
HVAC
EQUIPMENT
G
R
C
W
Y
OPTIONAL
WIRES
90-1859
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Troubleshooting
