6
ENTRY KEYS
The Entry Keys allow the programmed values to be
viewed and changed.
6.1
UP ARROW and DOWN ARROW Keys
Used in conjunction with the 'OPER DATA' and
'HISTORY' keys, the 'UP ARROW' and 'DOWN
ARROW' keys allow the user to scroll through the data
messages.
The 'UP ARROW' and 'DOWN ARROW' keys are also
used for programming the control panel when changing
cooling setpoints, setting the daily schedule, changing
safety setpoints, chiller options, and setting the clock.
6.2
ENTER/ADV Key
The 'ENTER' key must be pushed after any change is
made during programming to enter the new value into
memory. If the 'ENTER' key is not pressed afer a value is
changed, the changes will not be 'entered' and the
original values will be used to control the chiller.
7
SETPOINTS KEYS
Programming and viewing the cooling setpoints, daily
schedule, and safeties is accomplished by using the
'SETPOINTS' keys:
7.1
Cooling Setpoints
The cooling 'SETPOINT' and 'RANGE' can be viewed or
programmed by pressing the 'SETPOINTS' key (Refer
to Section 7.5 Setpoint Settings). After pressing the key
the 'SETPOINT' and 'RANGE' entry message is
displayed:
The above message shows the current chilled water
temperature 'SETPOINT' at 6.7°C (the cursor is
positioned under the number 6). Pressing the 'UP
ARROW' or 'DOWN ARROW' will change the
‘SETPOINT’ in 0.2°C to 0.3°C increments. The
'ENTER/ADV' key must be pressed to enter the
‘SETPOINT’ into memory and advance to the 'RANGE'.
The cursor will move under the current 'RANGE' setting.
Pressing the 'UP ARROW' or 'DOWN ARROW' will
change the setting between 0.8°C, 1.1°C and 1.4°C.
The 'ENTER/ADV' key must be pressed to enter the
range into memory.
1
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26
Form 201.26.OI1(11/09)
S E T P O I
N T
=
6 .
7 ° C
R A N G E
=
+ /
-
1 .
1 ° C
