York MAXE YST, Схема подключения

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JOHNSON CONTROLS
4
FORM 160.67-PW2 (1007)
LD08972
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
signi fi 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".
LD06821
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
™
control Center will display
"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.
LD06823
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
™ Control Center
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.