MODEl 8910 HOME COMfORT CONTROl
™
OR THIRD-PARTy CONTROl
WIRING & DIP SWITCH CONfIGURATION
When used as an external control, the Model 8910 Home Comfort Control
™
or other third-party control acts like a dehumidistat and will turn
the dehumidifier on and off when the relative humidity goes above or below the setting .
The Model 8910 Home Comfort Control
™
or other
Third-Party Control must be installed in the space that is being served by the dehumidifier.
One example of this would be to install the
Model 8910 Home Comfort Control
™
in the home’s living space and wire it to the dehumidifier which is located in the basement and is ducted
to the HVAC system . The Model 8910 Home Comfort Control
™
or other third-party control will override the dehumidifier control sensors and
on-board control knob setting . Refer to the Model 8910 Home Comfort Control
™
or other third-party control Installation Instructions for location,
mounting, and operating instructions . The dehumidifier control knob can only be used to initiate Test Mode when a Model 8910 Home Comfort
Control
™
or other third-party control is connected .
fIGURE 32 – Third-Party DIP Switch Configuration
90-1538
LOCAL
PRIMARY/SECONDARY
EXTERNAL
SYSTEM SETUP
HVAC FAN ON
VENT-TIMED
VENT-AUTO
PRIMARY
HVAC FAN OFF
ON
1234
SWITCH FLOA
TO
DT
SENSO
R
R
C
W
Y
G
A+
B
DE
H
REMOT
E
HV
AC EQUI
P
VEN
T
Cf
Gs
Gh
W-
DH
Rf
DAMPERS
C
R
RC
RH
HC
W
W2
W3
Y
Y2
Y3
C
L
G
DH
VENT
EAC
DH
DH
HUM
HP
B
W2
W
G
O
Y2
Y
nc
com
no
EQ
DEHUMIDIFIER
CONTROL BOARD
HVAC EQUIPMENT
MODEL 8910
HOME COMFORT CONTROL
™
EQUIPMENT CONTROL
MODULE
Wiring Notes:
• DEH output(s) on control must be normally open.
IMPORTANT:
The dehumidifier Rf and Cf terminals must be
powered from the transformer that powers the Model 8910 Home
Comfort Control
™
or third-party control .
Third-Party Control with 2 Dehumidifier Connections
1 . Connect one thermostat dehumidifier terminal to the Rf terminal on
the dehumidifier control board .
2 . Connect the other thermostat dehumidifier terminal to the DH
terminal on the dehumidifier control board .
Third-Party Control with 1 Dehumidifier Connection
Connect the thermostat dehumidifier terminal to the DH terminal on
the dehumidifier control board .
SEQUENCE Of OPERATION
• When the measured humidity is greater than the humidity setting on the Model 8910 Home Comfort Control
™
or other Third-Party Control, the
dehumidifier damper output turns on, the dehumidifier blower turns on, and the green Status LED on the dehumidifier flashes .
• Three seconds after the dehumidifier blower turns on, the compressor turns on and the green Status LED switches to solid illumination.
• When the measured humidity falls below the setting on the Model 8910 Home Comfort Control
™
or other Third-Party Control, the dehumidifier
damper output turns off and the dehumidifier blower and compressor turn off along with the green Status LED .
fIGURE 31 – Model 8910
Home Comfort Control
™
Wiring
90-1537
21
