York YK-EP, Operation And Maintenance Manual

Page: 90 / 268

Table 78: Setpoints
Button Access level Description
Econ
Temperature
Control Max
Loading
Delta
Admin
Range 0.1 to 100.0, Default 1.0
Displays the maximum temperature difference used to initiate
changes in the economizer mode.
Econ
Temperature
Control Max
Unloading
Delta
Admin Range 0.1 to 100.0, Default 1.0
Econ
Temperature
Control Kp
Admin
Range 0.1 to 15.0, Default 5.0
Adjusts the Proportional Gain.
Econ
Temperature
Control Ti
Admin
Range 0.1 to 200.0, Default 25.0
Adjusts the Integral Gain.
Econ
Temperature
Control Td
Admin
Range 0.0 to 200.0, Default 0.0
Adjusts the Derivative Gain.
Econ PRV
Output Gain Admin
Range 0.1 to 10.0, Default 1.0
Displays the output gain used to control the economizer Pre-
Rotation Vanes.
Table 79: Programmable
Button Access level Description
Change
Setpoints
Service or
Admin
Pressing this button will display a green box around the first
programmable item on the screen. The arrow keys can be used to
move the box around to select the item to program.
Default
Setpoints
Service
Pressing this button will display a dialog box telling the user to
“Press Enter to set all Econ Capacity Control Setpoints to their
default value. Press Cancel to leave setpoints unchanged.” If the
user presses Enter, all Econ Capacity Control Setpoints will return to
the default settings.
Table 80: Navigation
Button Access level Description
Home View Returns the user to the HOME Screen.
Capacity
Control
Service
Allows the user to navigate to the Economizer Capacity Control
Screen.
Anti-Surge
Tuning
Service Allows the user to navigate to the Econ Anti-Surge Tuning Screen.
YK-EP Style B Centrifugal Chiller 90