Wiring To The Hvac System - Aprilaire E080 Installation & Owner's Manual

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 19)
Snap the wiring access cover back into place after completing
all wiring
FIGURE 19: WIRING ACCESS COVER LOCATION
12
WIRING ACCESS COVER
90-1884

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 20 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 ENABLING DEH W/AC on
page 17 for additional setup steps required to access this
feature
FIGURE 20: WIRING TO HVAC SYSTEM
+ - A B
Remote
EXISTING WIRE
NEW WIRE
HVAC
THERMOSTAT
EQUIPMENT
OR ZONE
CONTROL BOARD
G
R
R
C
C
G
W
W
Y
Y
ODT VENT DEH
Sensor Dampers
OPTIONAL
WIRES
90-1859