DURASTAR DRAM30S1A - Additional Control Features; Humidifier, Dehumidification, and UV LED Wiring

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Humidifier Control:
To connect a humidifier, utilize the passive signal “WORK” output (CN23) port as well as the G
and C wires on the controller, and wire the humidistat and humidifier per above wiring diagram.
When the fan is running, the CN23 relay will be closed, which will allow power to the humidifier
when the humidistat is below humidity setpoint. If the thermostat or zone controller has an HUM
interface, connect the humidifier directly to the HUM and C ports.
Dehumidification Control Wiring
Dehumidification control requires external Humidistat at DH and R. Set S4-2 as OFF. When the
humidity rises and exceeds the set value of the Humidistat, the 24V signal of DH changes to 0V,
the cooling system starts the dehumidification operation, and the air volume drops to 80% of
the nominal cooling air volume.
UV LED Wiring
The WORK port is linked with the fan. When the fan is running, the relay is closed; if an active 24V
signal is required, it can be directly connected to the G and C ports.