eZV-440 Version 2.1 Application Guide
Document Edition 2.5
In eco mode, the occupied setpoint offset range is relaxed by the amount specified by the Eco
Mode Setback.
For night overrides, a pushbutton or motion override initiates the Night override mode.
Standby Mode
In Standby Mode:
current heating setpoint = Occupied Heating Setpoint + Occupied Setpoint offset - Standby setback
current cooling setpoint = Occupied Cooling Setpoint + Occupied Setpoint offset + Standby setback
In Standby Mode (with Eco Mode set up on network sensor or enabled using MV13 object):
current heating setpoint = Occupied Heating Setpoint + Occupied Setpoint offset - Eco Mode Setback -
Standby setback
current cooling setpoint = Occupied Cooling Setpoint + Occupied Setpoint offset + Eco Mode Setback +
Standby setback
Unoccupied Mode
In Unoccupied Mode:
current heating setpoint = Unoccupied Heating Setpoint
current cooling setpoint = Unoccupied Cooling Setpoint
Balancing Mode
Occupied setpoints are maintained in this mode. However, temperature and ventilation
sequencing is overridden for some outputs based on the balancing MV objects.
Occupancy Based on CO2 Levels
Two setpoints in the algorithm can be used to generate an occupancy signal based on CO2
levels:
• CO2OccOnSetpoint (AV182). When the CO2 level exceeds this setpoint, a CO2 occupancy
signal is generated. To disable CO
2-based occupancy detection, set this value to
2000 ppm.
• CO2OccOffSetpoint (AV183). When the CO2 level is below this setpoint, the CO2
occupancy signal if active is cancelled. The upper range of this setpoint is set at 100 ppm
below the
CO2OccOnSetpoint threshold.