Johnson Controls YORK YVAM 0350, Operation & Maintenance Manual

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Table 11: Programmable
Button Access Description
Clear Fault View When safety conditions are detected, the chiller shuts down, and the main status
display of the chiller displays a message to indicate the cause of the shutdown. Use
this button to clear the fault and message after the condition is removed. The button
only shows when the condition can be cleared. If the chiller has a standing Local or
Remote run command, it starts when the button is pressed.
Warning Reset Operator Use this button to acknowledges a warning condition and reset the message display
associated with it.
Start Operator This button is only available when the chiller does not have a local run request. Press
this button to select Enter to run or Cancel to abort to stopped. If you press Enter, the
chiller starts if the control source is local, or runs if control source is any remote.
Soft Stop Operator This button is only available when the chiller is in local mode and has a local run
request. It shows in place of the Start button. Press this button to select Enter to stop
or Cancel to remain running. If you press Enter, the chiller performs a soft shutdown
and disables the remote run permissive.
Table 12: Navigation
Button Description
System This screen provides additional system information.
Evaporator This screen provides a detailed view of all evaporator parameters, including the
programmable Leaving Chilled Liquid setpoints.
Condenser This screen provides a detailed view of all condenser parameters, including control of the
liquid level functions.
Compressor This screen provides a detailed view of all the compressor parameters. This includes surge
protection, MBC, variable geometry diffuser (VGD), and calibration.
Capacity Control This screen provides a detailed view of all the parameters associated with capacity control.
VSD This screen provides a detailed view of the motor and variable speed drive parameters. This
allows programming of the Current Limit and the Pulldown Demand Limit values.
Setpoints This screen provides a single location to program the most common system setpoints. It
is also the gateway to many of the general system setup parameters such as Date/Time,
Display Units, Scheduling, Printer Setup, and similar parameters.
History This screen provides access to a snapshot of system data at each of the last 10 shutdown
conditions, and provides for trending operating parameters.
35 YVAM Control Center