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Controller Points and Parameters
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Reheat Settings
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Sensor Options
If a Symbio 500 has a wireless zone sensor and is a member of Tracer SC+ wireless link, you can install
this feature to configure the unit controller so it will communicate the wireless zone sensor battery level
to the Tracer SC+ once it is installed on the Tracer SC+. An alarm will be activated in response to a
predefined "replace batteries" state of the point.
Equipment Settings
Use the Equipment Settings set and change a number of equipment setpoints and setup parameters on
the Equipment Utility screens.
Setpoints Screen
Default Setpoints
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Setpoint Limits
Each point has its own min/max, therefore, the following setpoint limits are incorporated in the occupied
setpoint point, standby setpoint point, and unoccupied heat/cool setpoints. After the controller
completes all setpoint calculations, the calculated occupied setpoint is validated against these
configured space setpoint limits:
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Parallel Fan Control: This entry will determine if a parallel fan is controlled based on zone
temperature or on flow conditions. The entry field on this line will disappear if the unit does not have
a parallel fan.
Valve Control Type (Hydronic): The choices are two-position, modulating, or both.
Location of Reheat: Choices are Local and Remote. If Both is selected for Valve Control Type, this
is used to select the location of the 2-Position valve.There is an additional binary value point to
select whether local or remote reheat has priority. By selecting Local the VAV unit will use local
reheat before remote reheat. If Remote is selected it does the opposite in that the VAV unit will use
remote heat before local heat.
Heat Control Type (Electric): Choices are Pulse Width Modulation, Staged, and SCR. Chose the
correct electric heat type.
Number of Reheat Stages (PWM or Staged): Choose the correct number of reheat stages (1-3)
Unoccupied Cooling Setpoint: Setpoints have a range from 40.0°F to 115.0°F (4.44°C to 46.11°
C). This cooling setpoint is used when the UCM is unoccupied. The unoccupied cooling setpoint
must be greater than or equal to the unoccupied heating setpoint plus 2.0°F (1.1°C).
Unoccupied Heating Setpoint: Setpoints have a range from 40.0°F to 115.0°F (4.44°C to 46.11°
C). This heating setpoint is used when the UCM is unoccupied. The unoccupied cooling setpoint
must be greater than or equal to the unoccupied heating setpoint plus 2.0°F 1.1°C).
Occupied Offset: Setpoints have a range from 0.9°F to 45°F (-17.27°C to 7.22°C). If a zone sensor
thumbwheel setpoint is not being used, this setpoint are added and subtracted from the Space
Temperature Setpoint Default to determine the occupied heating and cooling setpoints.
Standby Offset: Setpoints have a range from 0.9°F to 45°F (-17.27°C to 7.22°C). If a zone sensor
thumbwheel setpoint is not being used, this setpoint are added and subtracted from the Space
Temperature Setpoint Default to determine the standby heating and cooling setpoints.
Space Temperature Setpoint Default: Setpoints have a range from 40.0°F to 115.0°F (4.44°C to
46.11°C). If a zone sensor thumbwheel setpoint is not being used, this setpoint is used as the active
cooling setpoint during occupied times for the UCMs. The cooling setpoint must be greater than or
equal to the heating setpoint plus 2.0°F (1.1°C).
Heating Setpoint High Limit
Heating Setpoint Low Limit
Cooling Setpoint High Limit
Cooling Setpoint Low Limit
BAS-SVX091A-EN
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Troubleshooting
