Setpoints and related data
The setpoints and related data include the following items:
- Economizer damper minimum position low speed fan (LowSpeedFan-MinPos)
- Economizer minimum position setpoint (Econ-MinPos)
- FAN control type - variable speed (FanCtl-Type)
Operation
When the control is in the occupied mode and the FAN output energizes and the VFD output reaches the high-fan speed setting, the economizer damper position is the economizer minimum position setpoint.
When the VFD output reaches then fan low-speed setting, the economizer damper position is the economizer damper minimum position low speed fan.
When the VFD output is between the fan high speed and fan low speed settings, the economizer damper is position proportionally between the economizer minimum position setpoint and the economizer damper minimum position low speed fan.
Note: To disable the VAV economizer minimum position reset, set the economizer
minimum position setpoint and the economizer damper minimum position low speed fan to
the same value.