Alarm.Com ADC-T3000 - Terminal Designations

7
Terminal designations
Conventional system
Terminal Description
RC
Cooling power
RH
Heating power
Z1
Configurable W3, H (humidifier control),
DH (dehumidifier control),
EX (ventilation)
Z2
Configurable W3, H (humidifier control),
DH (dehumidifier control),
EX (ventilation)
W
Heat stage 1
W2
Heat stage 2
C
Common wire from secondary side of
heating transformer (if 2 transformers)
Y
Cool stage 1
Y2
Cool stage 2
G
Fan
O
Energized in COOL mode
B
Energized in HEAT mode
Heat pump
Terminal Description
RC
Cooling power
RH
Heating power
Z1
Configurable W3, H (humidifier control),
DH (dehumidifier control),
EX (ventilation)
Z2
Configurable W3, H (humidifier control),
DH (dehumidifier control),
EX (ventilation)
W
Aux stage 1
W2
Aux stage 2
C
Common wire from secondary side of
heating transformer (if 2 transformers)
Y
Pump stage 1
Y2
Pump stage 2
G
Fan
O
Energized in COOL mode
B
Energized in HEAT mode