For dual duct applications, the thermostat adjusts the hot and cold decks as separate dampers, with each deck having its
own actuator. The zone thermostat sends 24V AC from [Y] to open the cold damper for cooling and ventilation cycles. 24V
AC is applied from [Y2] to close the cold deck damper. 24V AC from [W] is sent to open the hot damper for heating and
ventilation/transfer air cycles. 24V AC is applied from [W2] to close the hot deck damper.
Note: As shown in the diagram, a discharge air
sensor is required for proper damper
operation. Refer to page 17 for detailed
wiring diagrams of accessory.
6
2
1
24V AC Dual Duct Actuators
(Two-Position or Floating Damper Actuators)
HOT DECK
DAMPER ACTUATOR
24V AC POWER
DATA
Discharge Air Sensor
(10K Type II)
PELICAN
TA1
7
COMMON
(1)
OPEN CLOSE
(3)(2)
24V AC Damper
Actuator Terminals
(Typical)
COMMON
24 VAC – POWER-CLOSE
24 VAC – POWER-OPEN
COLD DECK
DAMPER ACTUATOR
COLD
SUPPLY
HOT
SUPPLY
Pelican Thermostat
2
(1)
OPEN CLOSE
(3)(2)
24V AC Damper
Actuator Terminals
(Typical)
COMMON
24 VAC – POWER-CLOSE
24 VAC – POWER-OPEN
Wiring - Damper Actuators
4
5
5
3
23