YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
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SECTION 8 - MICROPANEL<br />
General<br />
100<br />
SYSTEM 1<br />
DATA KEY<br />
SYSTEM 2<br />
DATA KEY<br />
SYSTEM 3<br />
DATA KEY<br />
SYSTEM 4<br />
DATA KEY<br />
The data keys provide the user with many displays of<br />
individual system temperatures, pressures, and other<br />
operating data. These keys have multiple displays,<br />
which can be seen by repeatedly pressing the SYSTEM<br />
DATA or the ▲ or ▼ (Arrow) keys. An explanation of<br />
each key and its messages is provided below.<br />
System 1 Data Key Operation<br />
The SYSTEM 1 DATA key provides the user with access<br />
to System 1 operating parameters. The following<br />
is a list of the data in the order in which it appears.<br />
The first key press of the SYSTEM X DATA key displays<br />
all of the measured system pressures (oil and discharge).<br />
SYS 1 PRESSURES OIL = XXXX PSIG<br />
DISCHARGE = XXXX PSIG<br />
The second key press of the SYSTEM DATA key or<br />
the ▼ (DOWN ARROW) key displays system suction<br />
and condenser liquid pressure.<br />
SYS 1 PRESSURES SUCTION = XXXX PSIG<br />
CONDENSER LIQUID = XXXX PSIG<br />
SYSTEM DATA KEYS 1 THROUGH 4<br />
FORM 201.28-NM1.1<br />
ISSUE DATE: 8/29/2012<br />
LD10605<br />
The next key press displays system oil and eductor<br />
temperatures.<br />
SYS 1 TEMPERATURES OIL = XXX.X °F<br />
EDUCTOR = XXX.X °F<br />
The next key press displays system condenser liquid<br />
temperature, liquid line subcooling and saturated discharge<br />
temperature on the liquid line.<br />
SYS 1 CONDENSER LIQUID TEMP = XXX.X °F<br />
SUBCOOLING = XXX.X SAT TEMP = XXX.X °F<br />
The next key press displays discharge temperature,<br />
discharge superheat and saturated discharge pressure<br />
at the compressor.<br />
SYS 1 DISCHARGE TEMP = XXX.X °F<br />
SUPERHEAT = XXX.X SAT TEMP = XXX.X °F<br />
The next key press displays the System 1 motor thermistor<br />
temperatures.<br />
SYS 1 MOTOR TEMPS T1 = XXX.X °F<br />
T2 = XXX.X °F T3 = XXX.X °F<br />
If any motor temp sensor is being ignored,<br />
(selectable under Unit Set-up Mode), that<br />
sensor’s value will be displayed as<br />
XXXXX.<br />
JOHNSON CONTROLS