FORM 195.26-NM3
YORK INTERNATIONAL
39
GENERAL
The “CLOCK” is an internal system feature that allows
the microprocessor to continuously monitor the time
of the day. The micro will display actual time as well as
the day of the week and the date when programmed.
This feature allows the microprocessor to provide an
internal automatic time clock feature for starting and
stopping the chiller for each individual day of the week.
Also provided is a “HOLIDAY” feature which allows spe-
cial start/stop programming for designated holidays.
The internal clock and schedule programming elimi-
nates the need for an external time clock. Automatic
chiller start and stop will occur according to the pro-
grammed schedule.
If the user desires not to utilize the schedule feature,
the SET SCHEDULE/HOLIDAY can be programmed to
run the chiller on demand as long as the “UNIT” and
“SYS” switches are ON.
Typical display messages will be shown which apply to
each key.
PROGRAMMING THE DAY, THE TIME
AND THE DATE
Set Time
A message showing the day, time and date will be dis-
played when the SET TIME key is pressed.
To program the day, the time and the date, first press
the ADVANCE DAY key until the appropriate day of the
week is displayed. The day will advance each time the
key is pressed.
The cursor will already be below the first digit of the
time. Key in the new time, if required. Be sure to key in
a “0” before the other digits for times before 10 o’clock,
i.e. 08:01.
After the time is keyed in, the cursor will advance to
the AM/PM designation. To reprogram, press the AM/
PM key. When the key is pressed, the display will
change to the opposite time period. If no change is
required, begin keying in the required date (the cursor
will automatically skip to the first digit of the date [month]
when a “number key” is pressed and the number will
be placed in the first position).
NOTE: The AM/PM key can only be pressed once. If
an error is made, press the CANCEL key and
begin again.
The date may be keyed in after AM/PM. The sequence
of the message display is month, day and year. Two
digits must be entered for each of these items. There-
fore, a leading “0” may be required.
“CLOCK” KEYS
PROGRAMMING THE SYSTEM CLOCK AND DAILY START/STOP SCHEDULE
26572A(D)
T O D A Y I S S U N 1 1 : 1 2 A M
0 2 / 1 4 / 9 7
SET
TIME
CLOCK KEYS
