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Expander Zone Board wiring.
Damper Terminals
DO Drive open – this terminal will provide power to open the damper.
(Zone and spill)
C Common –this terminal is the damper common.
DC Drive closed - this terminal will provide power to close the damper.
R 24V active to power the thermostat.
Thermostat Terminals
C 24C power common.
W Heat call.
Y Cool call.
G Fan call.
Used to connect the easy zone 4E board to the easy zone 4 main board and editional
expander boards to increase the number of zones to the system. (Maximum number of
zones controlled is 24)
Expander Ports
Expander port marked “Main / Expander”.
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