When you go to the advanced overrides page for a Terminal Unit Controller in addition to Present Value, the following fields can be overridden:
When the TUC is programmed to use Tracer as the Unit Control Source, the Valve 1 – Closed field may be used to override control of Valve 1 to close it. This field is available only for TUC configurations that have Valve 1 configured (For example, 2 Pipe Heat or Cool Valve, 2 Pipe Cool Valve, 2 Pipe Heat Valve, SCUV, DX Cool, 2 Pipe hydro heat or 4 Pipe Heat and Cool Valve). To configure the valve requires selecting Valve 1 as a Change Unit Type parameter during offline editing. (The Change Unit Type button is located on the Status tab.)
Note: If both Open and Closed modes are overridden simultaneously, an Open mode command takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, the Valve 1 – Opened field may be used to override control of Valve 1, in order to open it. This field is available only for TUC configurations that have Valve 1 (example "2 Pipe Heat or Cool Valve" or "2 Pipe Cool Valve", "2 Pipe Heat Valve", "SCUV, DX Cool, 2 Pipe hydro heat" or "4 Pipe Heat and Cool Valve"). This configuration requires selecting Valve 1, during offline editing. This does not apply for units which have a Face and Bypass damper.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, the Valve 1 – Closed field may be used to override control of both Valve 1 and the Face and Bypass damper, in order to close them. This field is available only for TUC configurations that have Valve 1 configured (For example, 2 Pipe Heat or Cool Valve, 2 Pipe Cool Valve, 2 Pipe Heat Valve, SCUV, DX Cool, 2 Pipe hydro heat or 4 Pipe Heat and Cool Valve). This configuration requires selecting the Face and Bypass damper unit as a Change Unit Type parameter, during offline editing.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, the Valve 1 – Opened field may be used to override the control of both Valve 1 and the Face and Bypass damper, in order to Open them. This field is available only for TUC configurations that have a Face and Bypass damper. This configuration requires selecting the Face and Bypass damper unit as a Change Unit Type parameter, during offline editing.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, the Valve 2 – Closed field may be used to override control of Valve 2, in order to close it. This field is available only for TUC configurations that have Valve 2 configured. This configuration requires selecting 4 Pipe heat and Cool Valve as a Change Unit Type parameter, during offline editing. This does not apply for units which have a Face and Bypass damper.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode command takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, this referencer edit may be used to override the control of Valve 2, in order to open it. This field is available only for TUC configurations that have Valve 2 configured. This does not apply for units that have a Face and Bypass damper. This configuration requires selecting 4 Pipe Heat and Cool Valve as a Change Unit Type parameter, during offline editing.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode command takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, Valve 2 may be used to override the control of both Valve 2 and the Face and Bypass damper, in order to close them. This field is available only for TUC configurations that have both Valve 2 and the Face and Bypass damper. This configuration requires selecting both 4 Pipe Face and Bypass Damper unit as a Change Unit Type parameter during offline editing.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode command takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source, Valve 2 may be used to override the control of both Valve 2 and the Face and Bypass damper, in order to open them. This field is available only for TUC configurations that have a Valve 2 and the Face and Bypass damper. This configuration requires selecting 4 Pipe Face and Bypass Damper unit as a Change Unit Type parameter, during offline editing.
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source and is equipped with an outdoor air damper, the Outdoor Air Damper - Closed field is used to override the control of the outdoor air damper, in order to closed it. This configuration requires selecting Outdoor Air Damper as a Change Unit Type parameter during offline editing. (The Change Unit Type button is located on the Status tab.)
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
When the TUC is programmed to use Tracer as the Unit Control Source and is equipped with an outdoor air damper, the Outdoor Air Damper - Open field is used to override the control of the outdoor air damper, in order to open it. This configuration requires selecting Outdoor Air Damper as a Change Unit Type parameter during offline editing. (The Change Unit Type button is located on the Status tab.)
Note: If both Open and Closed modes are overridden simultaneously, an Open mode commands takes priority over the Closed mode (as decided by the TUC).
This field is available only for TUC configurations that have an exhaust fan configured. This configuration requires selecting the Exhaust Fan as a Change Unit Type parameter during offline editing. (The Change Unit Type button is located on the Status tab.)
When the TUC is programmed to use Tracer as the Unit Control, this field is used to override the control of the exhaust fan in order to turned it off.
Auto (default) - The building control system (Tracer Summit) controls the TUC to use its own exhaust fan algorithms to control the exhaust fan’s operation.
Off - The building control system (Tracer Summit) controls the TUC’s exhaust fan’s operation. The exhaust fan is commanded Off.
Referencer - Select this option to make the function dependent on the current value of another binary property in the system. When the referenced property is in the Off state, the exhaust fan will be allowed to run in the Auto mode. If the referenced property is in the On state, the exhaust fan will be commanded to an Off mode.
Note: If both On and Off modes are overridden simultaneously, an On commands takes priority over the Off mode (as decided by the TUC).
This field is available only for TUC configurations that have an exhaust fan configured. This configuration requires selecting Exhaust Fan as a Change Unit Type parameter during offline editing. (The Change Unit Type button is located on the Status tab.)
When the TUC is programmed to use Tracer as the Unit Control, this field is used to override the control of the exhaust fan, in order to turn it on.
Note: If both On and Off modes are overridden simultaneously, an On commands takes priority over the Off mode (as decided by the TUC).