Setpoints and related data
The setpoints and related data include the following items:
- Operational space temperature setpoint offset (OprSSO)
- Space temperature setpoint offset source (SSOSrc)
- Space temperature setpoint offset range (SSORange)
Inputs
The inputs include the following items:
- Network override space setpoint offset (NetSSO) communicated on the FC Bus
- Net sensor space temperature setpoint offset to the SA Bus
- Space temperature offset input (SSO) to SSO and COM terminals
Operation
The space temperature setpoint offset range sets the maximum amount a net sensor space setpoint offset or the space temperature setpoint offset input can offset the operational space temperature setpoint offset (OprSSO). The selectable range is 0.0°F to 5°F in 0.1°F increments.
The highest valid priority input is used for the operational space temperature setpoint offset (OprSSO). The operational space temperature setpoint offset assigns priority levels for inputs in the following highest to lowest order:
- Network override space setpoint offset (NetSSO)
- Net sensor space setpoint offset
- Space temperature setpoint offset input (SSO)
If the input in use becomes invalid, the operational space temperature setpoint offset (OprSSO) reverts to the next highest priority input.
The space temperature setpoint offset source (SSOSrc) describes the input in use for the operational space temperature setpoint offset (OprSSO), and the indications include the following items:
- BAS Override
- Indicates the network override space setpoint offset (NetSSO)
- Network Sensor
- Indicates a net sensor
- Local Input
- Indicates a space temperature offset input (SSO)
- Unreliable
- indicates no valid input is available and CV occupied cooling setpoint (ClgOcc-Sp) and CV occupied heating setpoint (CVHtgOcc-SP) are not offset
The network override space setpoint offset is used if a value is set or communicated within the last 15 minutes. If 15 minutes pass without a communicated value, then the UI displays Value Timed Out and the next highest priority input is used.
The net sensor space setpoint offset is used after approximately 30 seconds from the time a net sensor with space temperature setpoint offset capability is connected to the SA Bus.
The space temperature setpoint offset input is used if the space sensor is connected to the SSO and COM terminals.
If a valid input is not available for the operating space temperature setpoint offset, the CV occupied cooling setpoint (ClgOcc-Sp) and the CV occupied heating setpoint (CVHtgOcc-SP) are not offset.
The operational space temperature setpoint offset (OprSSO) value is either added to or subtracted from both the CV occupied cooling setpoint and the CV occupied heating setpoint.
The CV operating cooling setpoint and the CV operating heating setpoint are determined by the current occupancy mode. See Setpoint determination for additional information.