York YVAA Installation, Operation & Maintenance Instructions Manual page 132

Air-cooled screw liquid chillers with variable speed drive
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SECTION 8 - MICROPANEL
SYSTEM 1
DATA KEY
SYSTEM 2
DATA KEY
SYSTEM 3
DATA KEY
SYSTEM 4
DATA KEY
General
The data keys provide the user with many displays of
individual system temperatures, pressures, and other
operating data. These keys have multiple displays,
which can be seen by repeatedly pressing the SYSTEM
DATA or the ▲ or ▼ (Arrow) keys. An explanation of
each key and its messages is provided below.
System 1 Data Key Operation
The SYSTEM 1 DATA key provides the user with ac-
cess to System 1 operating parameters. The following
is a list of the data in the order in which it appears.
The first key press of the SYSTEM X DATA key dis-
plays all of the measured system pressures (oil and dis-
charge).
SYS 1 PRESSURES
The second key press of the SYSTEM DATA key or
the ▼ (DOWN ARROW) key displays system suction
and condenser liquid pressure.
SYS 1 PRESSURES
CONDENSER LIQUID = XXXX PSIG
132
SYSTEM DATA KEYS 1 THROUGH 4
OIL = XXXX PSIG
DISCHARGE = XXXX PSIG
SUCTION = XXXX PSIG
The next key press displays system oil and eductor
temperatures.
SYS 1 TEMPERATURES
The next key press displays system condenser liquid
temperature, liquid line subcooling and saturated dis-
charge temperature on the liquid line.
SYS 1 CONDENSER LIQUID TEMP = XXX.X °F
SUBCOOLING = XXX.X SAT TEMP = XXX.X °F
The next key press displays discharge temperature,
discharge superheat and saturated discharge pressure
at the compressor.
SYS 1 DISCHARGE
SUPERHEAT = XXX.X
The next key press displays the System 1 motor
thermistor temperatures.
SYS 1 MOTOR TEMPS
T2 = XXX.X °F
FORM 201.28-NM1.1
ISSUE DATE: 1/31/2018
LD10605
OIL = XXX.X °F
EDUCTOR = XXX.X °F
TEMP = XXX.X °F
SAT TEMP = XXX.X °F
T1 = XXX.X °F
T3 = XXX.X °F
JOHNSON CONTROLS

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