+ - A B
ODT VENT DEH
Sensor Dampers
Remote
FLOA
T
Switch
DH
DH
Gh
Rf
Cf
Gs
Y
W
HV
AC EQUIP
.
G
R
C
W
Y
R
C
G
W
Y
HVAC
EQUIPMENT
THERMOSTAT
EXISTING WIRE
NEW WIRE
OPTIONAL
WIRES
90-1859
(40 VA min)
24 VAC
(PRIMARY ZONE)
NORMALLY CLOSED
+ - A B
ODT VENT
Sensor
Dampers
Remote
DH
DH
Gh
Rf
Cf
Gs
Y
W
HV
AC EQUIP
.
(SECONDARY ZONE)
NORMALLY OPEN
DEH
FLO
AT
Switch
90-1896
NOTE:
Use 18-22 AWG wire for wiring to HVAC system
and zone dampers.
Pull off the wiring access cover near the dehumidifier control
to access the wiring terminals. Snap the wiring access cover
back into place after completing all wiring.
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 22
. If ducted to the HVAC system
in 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
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.
NOTE: Make sure the external static pressure does not
exceed the maximums shown on page 2, and disable
dehumidification during active air conditioning (see
DEH W/AC on page 13).
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 16).
Wire the dehumidifier Y terminal to the HVAC system if
it is desired to disable the dehumidifier compressor from
operating when the air conditioning is running. See
DEH
W/AC
in
System Set-up
on page 13 for additional set up
steps required to access this feature.
WIRING TO ZONE DAMPERS
Wiring the Dehumidifier to the HVAC System and Zone Dampers
Figure 22. Wiring to HVAC System
Figure 23. Two Zone Wiring On-Board Control
11
