LX Series Unit Ventilator Controller User's Guide30
Humidifier and Dehumidifier Outputs
Both digital and analog humidifier and dehumidifier outputs are available. The fan
must be ON to enable the humidifier and dehumidifier outputs.
The UVC uses the assigned outputs to maintain the humidity at a level defined by
the humidity setpoint on the general settings menu. A delay occurs when switching
between humidification and dehumidification. You can enter the time period for
the delay on the general settings screen. The Unit Ventilator Controller also offers
the ability to dehumidify with the cooling coil. See the Humidity Control section
for more information.
Minimum Fresh Air Enable (MIN_FRESH_AIR_ENABLE)
This output enables the fresh air damper to move to the minimum position.
Minimum fresh air is enabled when the occupancy state is OC_OCCUPIED, or
OC_BYPASS and the fan is ON.
Economizer Enable
When this output is ON, the economizer can be used for free cooling. This output
is enabled when the outdoor air temperature is below the economizer maximum
outdoor temperature.
Heat Valve ON-OFF
This output operates the digital heating valve.
Cool Valve ON-OFF
This output operates the digital cooling valve.
Heat Cool Valve ON-OFF
This output operates the digital heating-cooling valve according to the water
temperature.
Heat Valve Open or Close
These outputs operate heating floating valves.
Cooling Valve Open or Close
These outputs operate cooling floating valves.
Heat Cool Valve Open or Close
These outputs operate heating-cooling floating valves according to the water
temperature.
Fan Speed Modulate (FAN_SPEED_MOD)
Provides a variable speed fan control output.
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