When you go to the advanced overrides page for a Space Comfort Controller, in addition to Present Value, the following fields can be overridden:
This group is hidden when connected to the LCI-R controller and LCI-I controller.
Drive Open: Select Auto or Open or set a referencer to determine the setting. When set to Open, the unit drives all of its hydronic valves to 100 percent open. For example, you might set the valves to open when balancing the system.
Note: The Drive Open override takes precedence over Drive Closed. When the Drive Open field is set to Open, the Drive Closed field becomes unavailable.
Drive Closed: Select Auto or Closed or set a referencer to determine the setting. When set to Closed, the unit drives all of its hydronic valves to 100 percent closed.
This group appears when the unit is read to be a VAV UCM. It also appears when you opt to configure the controller as a VAV.
Drive Open: Select Auto or Open or set a referencer to determine the setting. When set to Open, the VAV air valve is 100 percent open. For example, during a smoke purge, the VAV box needs to be 100 percent open.
Note: This field is available only if the unit is configured to be a VAV and is online or when you change the unit type to VAV while the unit is offline.
Drive Closed: Select Auto or Closed or set a referencer to determine the setting. When set to Closed, the VAV air valve is 100 percent closed.
Note: This field is available only if the unit is configured to be a VAV and is online or when you change the unit type to VAV while the unit is offline.
Drive Min: Select Auto or Minimum or set a referencer to determine the setting. When set to Minimum, the VAV air valve opens to its configured minimum setpoint. For example, during certain outside air conditions, you may want the VAV boxes to stay at their minimum position.
Note: This field is available only if the unit is configured to be a VAV and is online or when you change the unit type on the controller to a VAV while the unit is offline.
Drive Max: Select Auto or Maximum or set a referencer to determine the setting. When set to Maximum, the VAV air valve opens to its configured maximum setpoint.
Note: This field is available only if the unit is configured to be a VAV and is online or when you change the unit type on the Status tab to a VAV while the unit is offline.