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Terminal Description
CAUTION: Low voltage hazard.
Can cause equipment damage.
Disconnect HVAC equipment before beginning installation.
Wiring
Wire the DR90 according to the diagram that applies to your desired operation.
Follow this diagram if using the
Prestige™ thermostat.
DR90 Dehumidification System 69-2407EFS—02
*
NOTE: The outer screws on the terminal block
secure the block to the chassis. They are not
used for wiring.
A wiring terminal block is located on the side
panel of the unit.
The four terminals for the terminal block (reading
from left to right in the photo) are:
DHUM: Compressor and fan operation for
dehumidification
R: DR90 24V output
FAN: Fan activation only for ventilation
C: DR90 24V output
External 24V devices can be powered from R and
C terminals (20VA max.).
HVAC
R
C
W
Y
G
W
W2
Y
Y2
G
K
THERMOSTAT
NOTE: THERMOSTAT MUST BE CONFIGURED TO DRIVE FURNACE FAN
DURING DEHUMIDIFICATION CALL.
C
Rc
R
H
H
DH
DH
DR90
DHUM R FAN C
M29839
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