FORM 201.10-NM1
83
YORK INTERNATIONAL
STATUS KEY
GENERAL
Pressing the STATUS key will enable the operator to
determine current chiller operation status as a whole and
as individual systems. The messages displayed will
include running status, cooling demand, fault status,
external cycling device status, load limiting, and anti-
recycle timer status. The display will be a single message
relating to the highest priority message as determined by
the microprocessor. Status messages fall into the
categories of General and Fault Status with each of the
categories discussed below.
GENERAL STATUS MESSAGE
Each of the general status messages with a description
of its meaning will follow. In the case of messages which
apply to individual systems, SYS 1 and SYS 2 messages
will both be displayed and may be different. “X”s in the
sample displays indicate numerical values that will
appear in the actual displays.
This message informs the operator that the “UNIT” switch
on the Control Panel is in the OFF position which will not
allow the chiller to run.
The DAILY SCHEDULE SHUTDOWN message indicates
that the daily schedule programmed into the Clock - SET
SCHEDULE / HOLIDAY is keeping the chiller from
running.
Run Permissive is an indicator that an external cycling
contact or flow switch connected in series with terminals
13 and 14 is open. Whenever the contact(s) is (are) open,
the NO RUN PERM will be displayed.
This message informs the operator that the chilled liquid
temperature is below the point (determined by the setpoint
and control range) that the micro will bring the lead system
on, and / or that the micro has not loaded the system far
enough into the loading sequence to be ready to bring the
lag system ON. The lag system will display this message
until the loading sequence is ready for the lag system to
start.
U N I T
S W I T C H
I S
I N
T H E
O F F
P O S I T I O N
D A I L Y
S C H E D U L E
S H U T D O W N
S Y S
1
N O
C O O L
L O A D
S Y S
2
N O
C O O L
L O A D
S Y S
1
N O
R U N
P E R M
S Y S
2
N O
R U N
P E R M
FIG. 23 – STATUS KEY
28164A
STATUS
KEY
Summary of Contents for Millennium YCAS 216X
Page 11: ...FORM 201 10 NM1 11 YORK INTERNATIONAL YCAS 140 246 DIMENSIONS English LD01444 LD01446...
Page 13: ...FORM 201 10 NM1 13 YORK INTERNATIONAL YCAS 140 246 DIMENSIONS SI LD01440 LD01442...
Page 15: ...FORM 201 10 NM1 15 YORK INTERNATIONAL YCAS 216X 266X DIMENSIONS English LD01454 LD01454...
Page 17: ...FORM 201 10 NM1 17 YORK INTERNATIONAL YCAS 216X 266X DIMENSIONS SI LD01450 LD01448...
Page 33: ...FORM 201 10 NM1 33 YORK INTERNATIONAL 28514A FILTER DRYER LIQUID STOP VALVE...
Page 37: ...FORM 201 10 NM1 37 YORK INTERNATIONAL LD01285 FIG 3 SCREW CHILLER REFIGERANT FLOW DIAGRAM...
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