Table of Contents
Advertisement
FIG. 1 – REMOTE MODE READY TO START
CONTACTS
REMOTE MODE READY TO START CONTACTS
When closed, these contacts signify the following:
1. The OptiView
™
Control center is in "Digital", "Ana-
log" or "ISN" remote operating mode, allowing for
energy management system or remote start/stop
control (FIG. 6).
2. All chiller safety cutout control are in the normal
position, so they will allow the unit to start.
3. All chiller cycling shutdown controls are in the nor-
mal position, so they will allow the unit to start.
4. The OptiView
Control Center COMPRESSOR
™
switch is in the "RUN" ( l ) position.
5. A closure of the Remote Ready to Start Contacts then
signifi es that the unit shall start when the Energy
Management System maintains the Remote Stop
Contact (FIG. 6) open and momentarily closes the
Remote Start Contacts (FIG. 6). When the Remote
Mode Ready to Start contacts close, the OptiView
Control Center will display the following message:
"SYSTEM READY TO START".
4
LD08972
FIG. 2 – CYCLING SHUTDOWN CONTACTS
CYCLING SHUTDOWN CONTACTS
When closed, these contacts signify the unit is NOT
permitted to start due to a CYCLING shutdown condi-
tion. The unit will automatically resart after the cycling
condition is NO longer present. YORK Operating and
Maintenance Manual 160.67-O1 provides a list and ex-
planation of all cycling shutdowns. While these contacts
are closed, the OptiView
"CYCLING SHUTDOWN - AUTO RESTART" on the
System Status Bar and the cause of the shutdown on the
Systems Details Bar of the display. Cycling Shutdown
contacts function in all operating modes.
™
FIG. 3 – SAFETY SHUTDOWN CONTACTS
SAFETY SHUTDOWN CONTACTS
When closed, these contacts signify the unit is NOT
permitted to start due to a SAFETY shutdown condi-
tion. Safety shutdowns require a manual reset procedure
performed before the unit can be restarted. YORK Op-
erating and Maintenence Manual 160.67-O1 provides
a list and explanation of all Safety shutdowns. While
these contacts are closed, the OptiView
will display "Safety Shutdown - Manual Restart" on the
System Status Bar and the cause of the shutdown on
the System Details Bar of the display. These contacts
will remain closed until the safety condition NO longer
exists and a manual reset is performed by placing the
OptiView
Control Center COMPRESSOR Switch
™
in the Stop-Rest position (O). The unit can then be
restarted. Safety Shutdown contacts function in all
operating modes.
FORM 160.67-PW2 (1007)
LD06821
™
control Center will display
LD06823
™
Control Center
JOHNSON CONTROLS
Advertisement
Table of Contents
