Microcomputer Control Center - York YCAL Series Manual

MicroComputer Control Center

JOHNSON CONTROLS
All controls are contained in a NEMA 3R powder painted steel cabinet with a gasketed
door and include the following features:
• Liquid Crystal Display (LCD) with Light Emitting Diode (LED) backlighting for outdoor
viewing:
• Two display lines
• Twenty characters per line
• Color-coded 12-button non-tactile keypad with two sections:
• DISPLAY/PRINT the following typical information:
• Chilled liquid temperatures
• Ambient temperature
• System pressures (each circuit)
• Operating hours and starts (each compressor)
• PRINT displays the following information on the liquid crystal display:
• Operating data for the systems
• History of fault shutdown data for up to the last six fault shutdown condi-
tions
• An RS-232 port, in conjunction with this press-to-print button, enables
hard copies to be printed via a seperate printer
• ENTRY section to:
• Enter setpoints or modify system values
• SETPOINTS updating can be performed to:
• Chill liquid temperature setpoint and range
• Remotely reset temperature range
• Set daily schedule/holiday for start/stop
• Manually override for servicing
• Low and high ambient cutouts
• Number of compressors
• Low liquid temperature cutout
FORM 150.67-EG1 (219)
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