York YST Operation Manual page 102

SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
This setpoint determines what existing digital output
control logic drives the 120 VAC digital output on the
Frick Digital I/O Board digital output Channel #24.
For example, if set for Turbine Start Relay, this out-
put is on when the main start relay K18 on the York
I/O board is on to energize the Turbine Trip Valve Air
Dump Solenoid and open the trip valve.
Change Setpoints
Access Level Required: SERVICE
This key enables the field selection cursor. The opera-
tor may then toggle between the programmable data
fields using the Cursor Arrow keys.
navigaTion
page up
Access Level Required: VIEW
Causes an instant return to Configuration Screen 2.
home
Access Level Required: VIEW
Causes an instant return to the Home Screen.
Setpoints
Access Level Required: VIEW
Causes an instant return to the Setpoints Screen.
102
pressure Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various pressure thresholds pertaining to the operation
of the chiller.
Time Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various time delays pertaining to the operation of the
chiller.
Speed Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various speed thresholds pertaining to the operation of
the chiller.
ramp rate Setpoints
Access Level Required: VIEW
Moves to a sub-screen that allows programming of
various speed setpoint and valve control signal ramp
rates pertaining to the operation of the chiller.
FORM 160.67-O1
ISSUE DATE: 4/1/2015
JOHNSON CONTROLS