YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

FORM 201.28-NM1.1
ISSUE DATE: 8/29/2012
The next key press displays the compressor speed in
% (0 to100%) and the compressor heater status (ON
or OFF)
SYS 1 COMPRESSOR SPEED = XXX.X %
HEATER = XXX
The next key press indicates the flash tank level low/
high and the economizer valve % open.
SYS 1 FLASH TANK LEVEL = XXX.X %
ECONOMIZER VALVE = XXX.X %
The next key press displays the condenser liquid line
subcooling and the drain valve position.
SYS 1 CONDENSER SUBCOOLING = XXX.X °F
CONDENSER DRAIN VALVE = XXX.X %
The next key press indicates the number of condenser
fans steps that are enabled (1 to 4), if the fans are not
operating on a VSD.
SYS 1 CONDENSER FANS ON = X
If the fans are controlled by an optional VSD, the display
will indicate fan speed signal control voltage to
the VSD and the fan speed (0 to 100%).
SYS 1 CONDENSER FANS ON = X
VSD FAN SPEED = XX.X V = XXX %
SECTION 8 - MICROPANEL
The next key press will indicate the state of the optional
VI solenoids where XXX indicates ON or OFF.
SYS 1 VI STEP SOLENOID 1 = XXX
VI STEP SOLENOID 2 = XXX
The next key press displays the system run time in
days, hours, minutes and seconds.
SYS 1 RUN TIME
XX DAYS XX HOURS XX MINUTES XX SECONDS
The next key press indicates the status of the RUN Relay
where XXX is ON or OFF, the status of the RUN
Permissive signal (flow switch/remote start/stop circuit
2 and 15 of 1TB, SYS 1) or 2 and 16 of 1TB, SYS 2)
and whether the internal software is telling the system
to run (ON or OFF)
SYS 1 RUN SIGNALS RELAY = XXX
RUN PERM = XXX SOFTWARE = XXX
System 2 Data Key Operation
System 2 keys function the same as the SYSTEM 1
DATA key except that it displays data for System 2.
On a 2 compressor system, the SYSTEM 3 and SYS-
TEM 4 data keys will display the following messages:
SYS 3 DATA NOT AVAILABLE
SYS 4 DATA NOT AVAILABLE
JOHNSON CONTROLS 101
8