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ENTRY
KEYS
FIG. 25 – ENTRY KEYS
GENERAL
The ENTRY key allows the user to change numerical
values programmed in as chiller setpoints, cut-outs,
clock, etc.
Numerical Keypad
The NUMERICAL keypad provides
all keys necessary to program nu-
merical values as required into
memory.
The " * " key is used to designate
holidays when programming special start and stop times
for designated holidays in the SET SCHEDULE / HOLI-
DAY display.
The "+/-" key allows programming -C setpoints and
cut-outs in the metric display mode.
Enter Key
The ENTER key must be pushed after any change is
made to setpoints, cut-outs, or system clock. Pressing
this key tells the micro to accept new values into memory.
If this is not done, the new values entered will be lost
and the original values will be returned.
The ENTER key is also used to scroll through available
data after any one of the following (4) keys is pressed:
PROGRAM
SET SCHEDULE
/HOLIDAY
OPER
DATA
YORK INTERNATIONAL
ENTRY KEYS
1
2
3
4
5
6
7
8
9
+ / -
0
*
ENTER
HISTORY
28164A
Cancel Key
The CANCEL key allows the user to change errors in the
data being programmed into memory.
When the CANCEL key is pressed, the cursor will al-
ways return to the first character to be programmed in
the display message. This allows the operator to begin
reprogramming. When the CANCEL key is pressed, the
values already keyed in will be erased and the original or
internally programmed default values will appear. In other
instances the display will remain the same and the only
reaction will be the cursor returning to the first character.
AM/PM Key
The AM / PM key allows the user to change AM / PM
while programming the correct time in the SET TIME
display. The same key allows changing the AM / PM
schedule while programming daily chiller start and stop
times in the SET SCHEDULE / HOLIDAY display.
Advance Day Key
The ADVANCE DAY key advances the day when the
SET TIME display is being programmed. The day is nor-
mally advanced to correspond to the current day of the
week. The day will advance one day at a time, each time
the key is pressed.
FORM 201.10-NM1
CANCEL
AM/PM
ADVANCE
DAY
87
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