176
YORK INTERNATIONAL
If an unacceptable value is entered at any stage, the
following message is displayed for a few seconds and
the entered value is ignored:
The following section shows examples of each program-
mable value display in the order in which they appear
after pressing the Program key, together with guidance
on programming each parameter.
The programmable values under the
Program Key must be checked and
properly programmed when commis-
sioning the chiller. Failure to properly
program these values may cause dam-
age to the Chiller or operating problems.
8.2
PROGRAM KEY –
USER PROGRAMMABLE VALUES
High Discharge Pressure Cut-Out
The Discharge Pressure Cutout is a microprocessor
backup for the mechanical high pressure cutout located
in each refrigerant circuit. This safety is bypassed for
the first 5 seconds of operation after which if the cut-
out point is exceeded for 3 seconds, the system will
shut down.
D I S C H A R G E
P R E S S U R E
C U T O U T
=
3 9 5 . 0
P S I G
8. PROGRAM KEY
8.1
GENERAL
The Program key is used to program 12 system operat-
ing parameters including cutout points for safeties, an-
ticipatory unload points to avoid faults, and anti-recycle
timer duration.
When the Program key is pressed, the following mes-
sage will be displayed to indicate the display is in the
Program Mode:
Pressing the ENTER Key causes the display to show
the operator in what language the control panel mes-
sage are displayed.
The operator may select 5 display message languages.
The options are English, Spanish, French, German and
Italian. The
á
or
â
keys can be used to select the de-
sired language.
Pressing the Enter key repeatedly allows scrolling
through the programmable displays.
As each value is displayed, it may be reprogrammed
using the 12 Entry keys and
áâ
Keys. New values
will be programmed into memory when the Enter key
is pressed and the display will scroll on to the next pro-
grammable value.
P R O G R A M
M O D E
D I S P L A Y
L A N G U A G E
E N G L I S H
O U T
O F
R A N G E
T R Y
A G A I N !
29023A
MicroPanel Contents
Summary of Contents for MILLENNIUM YCAS 250
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