Fig. 4 - Run Contacts; Fig. 5 - Anticipatory/Alarm Contacts; Fig. 6 - Remote Start-Stop Contacts From Energy Management System - York MILLENNIUM YK Wiring Diagram

FIG. 4 – RUN CONTACTS
FIG. 4 – RUN CONTACTS
When closed, these contacts signify that the unit is op-
erating. The OptiView Control Center will display a Sys-
tem Run Message.
FIG. 5 – ANTICIPATORY/ALARM CONTACTS
FIG. 5 – ANTICIPATORY/ALARM CONTACTS
These contacts will close whenever one or more of the
following WARNING conditions occurs. They will re-
main closed as long as the condition is in effect. On
most Warnings, the contacts automatically open when
the condition is no longer present. On those warnings
marked with an asterisk, the contacts will open only
after the condition is no longer present and the WARN-
ING RESET key is pressed in Operator (or higher) ac-
cess level.
Real time Clock failure, Condenser or Evaporator Trans-
ducer Error*, Refrigerant level Out Of range, Standby
Lube – Low Oil Pressure*, Setpoint Override*, Con-
denser-High Pressure Limit, Evaporator-Low Pressure
Limit, Vanes Uncalibrated – Fixed speed, Harmonic fil-
ter – Operation Inhibited, Harmonic Filter – Data Loss,
Harmonic Filter – Input Frequency Out of Range.
YORK INTERNATIONAL
LD06822
FIG. 6 – REMOTE START-STOP CONTACTS FROM
ENERGY MANAGEMENT SYSTEM
FIG. 6 – REMOTE START AND STOP CONTACTS
FROM ENERGY MANAGEMENT SYSTEM
When the OptiView Control Center is in the "Digital",
"Analog" or "ISN" remote operating mode and the
COMPRESSOR switch is in the "RUN" (l) position,
with the Remote Stop Contacts open, and the Remote
Mode Ready to Start Contacts closed (Fig. 1), the unit
will start via a closure of the Remote Start Contacts. A
subsequent closure of the Energy Management System
Remote Stop Contacts causes the chiller to shut down.
The OptiView Control Center will display "REMOTE
STOP" because the Energy Management System Re-
mote Stop Contact has commanded the unit to shut down.
LD04604
It is recommended that maintained contacts be used for
both START and STOP.
Even when the chiller is applied with
Remote Start-Stop (when the Control
Center is in the "remote operating
mode), an EMERGENCY STOP by an
operator or others can STOP the com-
pressor from the OptiView Control
Center and prevent the chiller from re-
starting. However, the operator cannot
locally start the compressor using
"compressor" start switch, when the
control center is in the "remote" oper-
ating mode.
FORM 160.54-PW7
LD06824
5