York YK-EP Operation And Maintenance Manual page 87

Table 75: Programmable
Button Access level
Economizer
Operator
Run
Decrease Service
Set Service
Table 76: Navigation
Button Access level
Home View
Economizer
Service
Compressor
Setpoints Service
YK-EP Style B Centrifugal Chiller
Description
This button will enable or disable the economizer run feature. This
feature is enabled by default.
Pressing this button with activate the economizer Pre-Rotation
Vane override and set it to Manual if it was previously in Auto. It
will decrease the Pre-Rotation Vane override position by an amount
equal to the Manual Increment.
Pressing this button will open a dialog box where the user can
manually enter a command value for the economizer Pre-Rotation
Vanes. Once a value has been entered and the Enter key pressed,
the Econ PRV Override Enable will be set to Manual, if it had been in
Auto and the Econ Pre-Rotation Vanes Override Position will be set
to the entered value. (0% to 100%, Default = 0%).
Description
Returns the user to the HOME Screen.
Allows the user to navigate to the Economizer Compressor Screen.
Returns the user to the Economizer Capacity Control Setpoints
Screen.
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