YORK INTERNATIONAL
94
This message displays the rate of change of the leav-
ing chilled liquid temperature in degrees per minute leav-
ing the Master and
Subordinate
section evaporators. A
minus
sign indicates a falling temperature. No sign
indicates
rising temperature.
This message indicates the position of the optional aux-
iliary contacts for the evaporator water pump:
ON = contacts closed, OFF = contacts open.
The Evaporator Heater status is controlled by ambient
temperature as follows: If measured ambient falls be-
low 40°F, the Evaporator Heater is switched ON. If mea-
sured ambient then rises above 45°F the heater is
switched OFF. The evaporator heater prevents water
standing in the evaporator from freezing.
System Data:
Pressing the Enter key again gives the following
message:
This advises that the common data has been completed
and that pressing the Enter key will now scroll through
the system data for the master section of the chiller, i.e.
the data for System 1 followed by the data for System
2. Pressing the Operating Data key twice jumps directly
to System 2.
The data for each system is provided through the five
displays as described under YCAS 2 System Models
System Data above.
After completing the system data for the master sec-
tion, pressing Enter again gives the following message:
Pressing the Enter key will now scroll through the sys-
tem data for Systems 3 and 4. Pressing the Operating
Data key three times jumps directly to System 3.
At the end of this sequence the displays scroll back to
the beginning of the common data section.
4.4 OPERATING DATA REMOTE PRINTOUT
The following text shows a typical example printout ob-
tained by pressing the Operating Data key with an op-
tional printer attached. In this case an example is given
for a YCAS 3 System Chiller. YCAS 2 System models
and YDAS models provide similar printouts for the ap-
propriate number of systems:
YORK INTERNATIONAL CORPORATION
MILLENNIUM SCREW CHILLER
ISN OPTION ENABLED
SOFTWARE VERSION W.04F.02.500.02
SYSTEM STATUS
11:43PM 01 JAN 96
SYS 1 COMPRESSOR RUNNING
SYS 2 COMPRESSOR RUNNING
SYS 3 COMPRESSOR RUNNING
RETURN WATER TEMP
58.1 DEGF
LEAVING WATER TEMP
49.3 DEGF
LOW WATER CUTOUT
36.0 DEGF
COOLING RANGE
42.0 TO 44.0 DEGF
TARGET TEMP
43.0 DEGF
AMBIENT AIR TEMP
70.2 DEGF
LOW AMBIENT CUTOUT
25.0 DEGF
LOW PRESSURE CUTOUT
44 PSIG
LEAD SYSTEM
SYS 1
LOCAL REMOTE SETTING:
LOCAL
SYSTEM 1 DATA
COMPRESSOR STATUS
ON
RUN TIME
0- 0-31-26 D-H-M-S
AVERAGE MTR
65 %FLA
PHASE L1 MTR
66 %FLA
PHASE L2 MTR
65 %FLA
PHASE L3 MTR
65 %FLA
DIFF OIL PRESSURE
9 PSID
SUCTION PRESSURE
72 PSIG
SATURATED SUCTION
42.6 DEGF
SUCTION TEMP
49.0 DEGF
SUPERHEAT
6.4 DEGF
DISCHARGE PRESSURE
214 PSIG
SATURATED DISCHARGE
106.2 DEGF
DISCHARGE TEMP
128.1 DEGF
OIL TEMP
131.2 DEGF
LIQUID INJECTION VALVE
OFF
FORWARD FANS
2
REVERSE FANS
OFF
LIQUID LINE SOLENOID
ON
RUN PERMISSIVE
ON
M S T R
R A T E
-
0 . 9
° F / M
S L V
R A T E
-
0 . 8
° F / M
E V A P O R A T O R
W A T E R
P U M P
S T A T U S
O N
E V A P O R A T O R
H E A T E R
S T A T U S
O N
P R E S S
E N T E R
T O
D I S P L A Y
M A S T E R
D A T A
P R E S S
E N T E R
T O
D I S P L A Y
D A T A
