15
Dehumidification Configuration
For Cor/Housewise Thermostats
(Carrier: TP--WEM01 / Bryant: T6--WEM01)
These thermostats allow dehum operation without need for a relay
if the dehum active status is selected to “Closed”
NOTE
: Super--dehum mode is not available in screen options
when DEHUM ACTIVE status is selected and is not recommended
if using DEHUM ACTIVE status of “Open” and a relay. Airflows
programmed in the control boards will not provide super dehum
operation.
During the guided setup process, configure the thermostat with a
dehumidifier on the output that is powered by the thermostat.
Following is an example of the thermostat display screen during
guided equipment setup process.
By default, the thermostat will configure the dehumidifier output
(ACC+) as ACTIVE OPEN. For geothermal heat pumps, this
configuration setting will need to be changed to ACTIVE
CLOSED.
The setting can be changed on the thermostat by going to:
Menu > Service (hold for 10 sec) > Installation Settings >
Equipment Setup > Accessory > Dehum Active
Super Dehumidification
Super Dehumidification should NOT be used with geothermal heat
pumps.
Cor/Housewise with Field Installed Relay
If motor intermittently runs with no call, refer to Fig 16.
NOTE
: In thermostats with triacs, such as the Core or Housewise,
there is potential for the triac to bleed slight voltage to the blower
circuit. In some cases it is low enough to be unnoticeable but in
rare occasions the voltage trickle could be enough (typically >8.5
volts) to bump over the blower intermittently with no G call. If
this occurs, it is recommended to add a normally open relay in the
blower circuit. Refer to Fig 16.
Y1
Y2
W 1
O
G
R
C
LOW VOLTAGE CLASS II WIRING – 18AWG
W 2
24V INPUTS
BLOWER
REVERSING VALVE
HEATING STAGE 1
COOLING STAGE 2
COOLING STAGE 1
HEATING STAGE 2
ECM CONTROLLER INTERFACE
S
T
L
O
V
E
N
I
L
C
A
V
4
2
EX: 230VAC
H
Y1
Y2
W 1
O/B
G
R
C
24VAC (HOT)
24VAC (COMMON)
BLOWER
SWITCH OVER VALVE
W 2/E
HEATING STAGE 2
24V OUTPUTS
HEATING STAGE 1
COOLING STAGE 2
COOLING STAGE 1
H
THERMOSTAT
HUMIDISTAT
DE-HUMIDIFICATION CALL
HGRH
YES NO
DHR – DEHUMIDIFICATION RELAY
FIELD INSTALLED
C
RELAY
A150489
Fig. 16 -- Wiring for Cor / Housewise Adjusted for Geothermal Application
