York YK-EP Operation And Maintenance Manual page 54

Table 38: Programmable
Button Access level
Economizer
Level Service
Setpoint
Economizer
Stopped Service
Setpoint
Startup
Service
Position
Startup Delay Admin
Ramp Time Admin
Change
Admin
Setpoints
Manual
Service
Increment
Open Service
Close Service
Set Service
Auto Service
Table 39: Navigation
Button Access level
Home View
Economizer
View
Compressor
54
Description
Displays the economizer refrigerant level setpoint to tenths of a
percent. (Min 20%, Max 80%, Default 70%)
Displays the economizer refrigerant stopped level setpoint to tenths
of a percent. (Min 0%, Max 80%, Default 20%)
Indicates in tenth of a percent the Economizer Level Control Valve
Startup Position setpoint. (Min 0%, Max 100%, Default 50%)
This button displays the startup delay time in seconds.
Displays the amount of time that it takes for the Economizer to
go from the Stopped Setpoint to the Level Setpoint. The time will
remain the same even if the Stopped setpoint is 10% below the Level
Setpoint.
This enables a green box to be displayed which can be scrolled
through the 3 Economizer PID gain settings.
This oversized button will also contain a text box displaying the
Economizer Level Control Valve Manual Increment for manual
control.
Pressing this button will set the Economizer Level Control Valve
Mode to Manual, if it had been in Auto. It will increase the current
Economizer Level Control Valve Command by an amount equal to
the Manual Increment, with a maximum of 100.0%.
Pressing this button will set the Economizer Level Control Valve
Mode to Manual, if it had been in Auto.It will decrease the current
Economizer Level Control Valve Command by an amount equal to
the Manual Increment, with a minimum of 0.0%.
Pressing this button will open a dialog box where the user can
manually enter a valve command. Once a value has been entered
and the Enter key pressed, the Economizer Level Control Valve Mode
shall be set to Manual, if it had been in Auto and the Economizer
Level Control Valve Command shall be set to the entered value.
Pressing this button will set the Economizer Level Control Valve
Mode to Auto Control. This button will only be available and active
when the Economizer Level Control Valve Mode is Manual
Description
Returns user to HOME Screen.
Returns User to Economizer Screen.
YK-EP Style B Centrifugal Chiller