Honeywell Home DR90A3000 - Wiring Diagram for DG115 IAQ Control

Terminal Description
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 dehumidifier unit.
The six terminals for the terminal block (reading
from left to right in the photo) are:
FL
OAT:
External low voltage float switch or
w
ater sensor (two terminals). Use
normally closed switch.
DHUM: Compres
sor and fan operation for
dehumidification
R: DR90/DR120 24V output
F
AN:
F
an activation only for ventilation
C: DR90/DR120 24V output
External 24V devices can be powered from R and C
terminals (20V
A max.).
Wiring
Wire the DR90A3000/DR120A3000 according to the diagram that applies to your
desired operation.
DR90A3000/DR120A3000 Dehumidification System 33-00298EFS—09
8
Follow this diagram if using
the Prestige thermostat.
DEHUMIDIFIER
DHUM
+
+
R
FAN
C
FLOAT
IN THIS DIAGRAM, U1 CONTROLS THE DR90/DR120 FOR DEHUM AND
U2 CONTROLS THE DR90/DR120 FOR VENTILATION.
INSTALL A JUMPER ON EIM AS SHOWN ONLY WHEN USING THE
DR90/DR120 FOR VENTILATION IN ADDITION TO DEHUMIDIFICATION.
IF A FLOAT SWITCH IS NOT USED, THEN JUMPER THE FLOAT TERMINALS
.
1
2
1
2
3
3
EIM
U3
U3
U2
U2
U1
U1
M38418A
CAUTION: Low voltage hazard.
Can cause equipment damage.
Disconnect HVAC equipment before beginning installation.