Install Instructions

WIRING THE DEHUMIDIFIER TO THE HVAC SYSTEM AND ZONE DAMPERS
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 24� 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�
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 19)�
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 16
for additional set up steps required to access this feature�
WIRING TO ZONE DAMPERS
+ - A B ODT VENT DEH
Sensor DampersRemote
FLOAT
Switch
DH DH
Gh Rf Cf Gs YW
HVAC EQUIP.
G
R
C
W
Y
R
C
G
W
Y
HVAC
EQUIPMENT
THERMOSTAT
OR ZONE
CONTROL BOARD
EXISTING WIRE
NEW WIRE
OPTIONAL
WIRES
(40 VA MIN)
24 VAC
(PRIMARY ZONE)
NORMALLY CLOSED
+ - A B ODT VENT
Sensor DampersRemote
DH DH
Gh Rf Cf Gs YW
HVAC EQUIP.
(SECONDARY ZONE)
NORMALLY OPEN
DEH
FLOAT
Switch
90-1859
90-1896
FIGURE 24 – WIRING TO HVAC SYSTEM
FIGURE 25 – TWO ZONE WIRING ON-BOARD CONTROL
NOTE: Dehumidifier zoning
is not recommended in
HVAC zoning applications�
14