Installation Manual

5
POWERED
HUMIDIFIER
RH
RC
R
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
24
VA
C
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24
VAC
U3
U3
U2
U2
U1
U1
NON-POWERED
HUMIDFIER
24
VAC
120
VAC
1
POWERED
VENTILATOR
RH
RC
R
C
24
VA
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
1
POWERED
DEHUMIDIFIER
RH
RC
R
C
U3
U3
U2
U2
U1
U1
24
VAC
120
VAC
24
VAC
120
VAC
24
VA
C
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24
VAC
U3
U3
U2
U2
U1
U1
NON-POWERED
VENTILATOR
24
VAC
120
VAC
1
FIELD INSTALLED
JUMPER BETWEEN
R AND U1
RH
RC
R
C
24 VAC
U3
U3
U2
U2
U1
U1
OR
DEHUMIDIFICATION
WITH LOW SPEED FAN
24
VAC
120
VAC
1
2
Typical hookup of powered humidifier Typical hookup of non-powered
humidifier
Typical hookup of powered ventilation
Typical hookup of powered dehumidifier
(whole house dehumidifer)
Typical hookup of variable speed blower
for dehumidification in low speed
Typical hookup of non-powered
ventilation
Any combination of universal relays (U1, U2, U3) can be used. They are set in the
thermostat installer setup.
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.
1
2
Normally open, dry contacts
Normally closed, dry contacts
Wiring humidification, dehumidification and ventilation