Honeywell TH8320R1003 Vision Pro 8000 Product Data page 129

Wiring IAQ Equipment or a Heat/Cool Stage to the Universal Terminals
To Equipment Interface Module
"U" terminals can be used for humidification, dehumidification, ventilation or a stage of heating/cooling.
U3
U3
U2
U2
U1
POWERED
HUMIDIFIER
U1
RH
RC
R
24
VAC
VAC
C
Fig. 330. Typical hookup of powered humidifier.
U3
U3
U2
U2
U1
POWERED
VENTILATOR
U1
RH
RC
R
24
VAC C
Fig. 331. Typical hookup of powered ventilation.
U3
U3
U2
U2
U1
POWERED
DEHUMIDIFIER
U1
RH
RC
R
24
VAC C
Fig. 332. Typical hookup of powered dehumidifier (whole
house dehumidifer).
1 Any combination of universal relays (U1, U2, U3) can be used. They are set in the thermostat installer setup.
2 Wire the universal EIM relay to the low speed fan for dehumidification control at the equipment. The EIM relay can be set to be
normally open or normally closed in the thermostat installer setup.
Normally open, dry contacts
Normally closed, dry contacts
24 120
VAC VAC
24 120
VAC
24 120
VAC VAC
24 120
VAC VAC
24 120
VAC VAC
24 120
VAC VAC
U3
U3
U2
U2
U1
U1
RH
RC
R
24 VAC
C
Fig. 333. Typical hookup of non-powered humidifier.
U3
U3
U2
U2
U1
U1
RH
RC
R
24 VAC
C
Fig. 334. Typical hookup of non-powered ventilation.
OR
24 VAC
Fig. 335. Typical hookup of variable speed blower for
dehumidification in low speed.
129
®
VISIONPRO 8000 WITH REDLINK™
1
NON POWERED
HUMIDFIER
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
24 120
VAC VAC
1
NON POWERED
VENTILATOR
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
24 120
VAC
VAC
U3
1
U3
U2
2
U2
DEHUMIDIFICATION
U1
WITH LOW SPEED FAN
U1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
24 120
VAC VAC
C
68-0312—01