Section 21 • Condenser Control Overview - Emerson VILTER MicroVission Operation And Service Manual

Section 21 • Condenser Control
Overview
This screen allows the operator to view and adjust con-
denser set point settings associated with condenser op-
eration. This screen will only be active if the Condenser
Control option has been enabled from the Configuration
Screen, page 2. When Condenser Control is running, a
status icon will appear on the bottom left corner of the
main screen to make the user aware of it.
MicroVission Controller • Operation and Service Manual • Emerson • 35391MV 1.3
Figure 21-1. Condenser Control Setpoints
The Condenser Control operation allows the cycling of
fans and pumps in order to maintain a specific condens-
ing pressure. The five different steps in step control al-
low selection of fans, pumps and VFD in one or more
steps. When a VFD is employed, VFD is allowed to reach
maximum speed, if additional capacity is needed, the
next fan or pump is turned on. The VFD will modulate
down and then once it is back up to 100% again, then
the next fan or pump is turned on. This method allows
the smoothest condenser control by spacing the VFD
between the fan and pump steps, while maintaining a
condenser pressure that matches the set point.
21 – 1