149
YORK INTERNATIONAL
FORM 201.19-NM1 (204)
Information available using the Operating Data key is de-
scribed in the following sections. In example displays “ # ”
is used to indicate system number where appropriate.
4.3 OPERATING DATA –
LOCAL DISPLAY MESSAGES
YCAS 2 System Models :
When the Operating Data key is pressed, the following
message appears:
Repetitively pressing the keys will scroll through
the following Common (whole chiller) Data and in di -
vid u al System Data information displays.
Common Data:
This message shows the time remaining on the Load
Timer and the Unload Timer. These Timers constantly
recycle and are used in conjunction with “rate control”
and “temperature deviation from setpoint” to de ter mine
when loading/unloading should occur.
4. PRINT KEYS
4.1 GENERAL
The Print keys provide access to two sets of in for ma tion
either locally on the panel display or, if an optional
printer is connected, remotely as hard copy printouts.
The Operating Data (Oper Data) key provides a real-
time list of system operating data and programmed
set tings. The History key provides a comprehensive
list of operating data and programmed settings “at the
in stant of fault” on each of the last six faults.
4.2 OPER DATA KEY
If a remote printer is not connected, pressing the Op er -
at ing Data key allows the user to scroll through in for -
ma tion, on the 40 character display, which is not di rect ly
available from the Display keys on the panel.
If a remote printer is connected, pressing the Operating
Data key causes a snapshot to be taken of system op er -
at ing conditions and of the user programming se lec tions.
The data is stored in temporary memory, then trans mit ted
from the microprocessor to the remote print er. As the
data is transmitted it is erased from the memory.
O P E R A T I N G D A T A
D I S P L A Y S
L O A D T I M E R 1 0 S E C
U N L O A D T I M E R 0 S E C
29023A
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