York Millennium YCAS 316, Установка, эксплуатация и обслуживание, Страница: 122 / 144

122
YORK INTERNATIONAL
CLOCK KEYS
GENERAL
The CLOCK is an internal system feature that allows the
microprocessor to continuously monitor the time of the
day. The micro will display the actual time as well as the
day of the week and the date on the control panel dis-
play, if programmed. The internal clock allows the micro-
processor to provide an internal automatic time clock
feature for starting and stopping the chiller for each indi-
vidual day of the week. Also provided is a HOLIDAY fea-
ture which allows special start / stop programming for
designated holidays.
The internal clock and schedule programming eliminates
the need for an external time clock. Automatic chiller
start and stop will occur according to the programmed
schedule.
If the user decides 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, SET TIME & THE DATE
Set Time
A message showing the day, time and date will be dis-
played when the SET TIME key is pressed.
When the display appears, the cursor will be below the
first digit of the time. Press the ADVANCE DAY key until
the proper day appears. Key in the time (hour and minute).
Be sure to key in a “0” before the other digits for times
before 10 o’clock. i.e. 08:31.
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.
NOTE: The AM/PM key can be pressed once. If an er-
ror is made, press the CANCEL key and begin
again.
T O D A Y I S M O N 1 1 : 1 2 A M
1 9 F E B 9 7
FIG. 29 – CLOCK KEYS
28164A
SET
TIME
CLOCK
KEYS