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After the ENTER key is pressed, a new message will be
displayed to designate which days of the week are holi-
days.
S
M
T *
W
H O L I D A Y
N O T E D
In the above sample display, an * designates Tuesday as
a holiday.
When the display appears, the cursor will first stop be-
hind Sunday. To designate a day as a holiday, press the
" * " key. If a day is not to be a holiday, press the "0" key.
Whenever the " * " or the "0" keys are pressed, the cursor
will advance to the next day. After all the holiday days
are programmed, press ENTER to store the new data
into memory. The display will then advance to the begin-
ning of the Daily Schedule (MON).
The Holiday Schedule is only executed once by the mi-
cro before it is erased from memory. This is done be-
cause in most cases a special Holiday Schedule is only
necessary once in a several month period. It also elimi-
nates the need for operator intervention to erase the sched-
ule after the holiday passes.
124
T
F
S
B Y
*
If an error is made while programming or a change is
required, press CANCEL. This will clear the programmed
(*) "Holiday" days. The schedule can then be repro-
grammed.
The "0" key will not cancel out a " * " and cannot be used
for correcting a programming error.
Manual Override
When the "MANUAL OVERRIDE" key is pressed, the Daily
Schedule programmed into the chiller will be ignored and
the chiller will start up when water temperature allows,
unit switches permits, remote cycling device permits,
and system switches permit.
Normally this key is not used unless an emergency forces
the chiller to require operation during a period where the
programmed Daily Schedule is calling for the chiller to
be OFF (Daily Schedule Shutdown).
Once activated, MANUAL OVERRIDE is only active for
a period of 30 minutes. It is for servicing only and is
designated so that if selected and operated unattended,
the microprocessor will automatically return to the Daily
Schedule.
MANUAL
OVERRIDE
YORK INTERNATIONAL
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