Carrier AquaEdge 19XR series Start-Up, Operation And Maintenance Instructions Manual page 30

Single-stage or two-stage semi-hermetic centrifugal liquid chillers with pic ii controls and hfc-134a 50/60 hz
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To access this display from the ICVC default screen:
1. Press
MENU
.
2. Press
STATUS
(
MAINSTAT
3. Press
SELECT
.
DESCRIPTION
Control Mode
Run Status
Start Inhibit Timer
Occupied?
System Alert/Alarm
†Chiller Start/Stop
†Remote Start Contact
Temperature Reset
†Control Point (See Note 7)
Chilled Water Temp (See Note 8)
†Active Demand Limit
Average Line Current
Motor Percent Kilowatts
Auto Demand Limit Input
Auto Chilled Water Reset
Remote Reset Sensor
Total Compressor Starts
Starts in 12 Hours
Compressor Ontime
†Service Ontime
Ice Build Contact
Refrigerant Leak Sensor
Emergency Stop
Alarm Relay
NOTES:
1. Numbers in parenthesis below indicate the equivalent CCN
index for BEST programming or BACnet Translator use.
2. Off (0), Local (1), CCN (2), Reset (3)
3. Timeout (0), Ready (1), Recycle (2), Startup (3), Running (4),
Demand (5), Ramping (6), Autorest (7), Override (8), Tripout
(9), Control Test (10), Lockout (11), Pumpdown (12), Prestart
(13)
4. Normal (1), Alert (2), Alarm (3).
5. All variables with capital letter point names are available for
CCN read operation. Those shown with (†) support write opera-
tions for all CCN devices.
6. An abbreviation in the column to the right of POINT STATUS,
indicates that the point is being Forced and the Force level. The
CCN Force priority hierarchy is found ICVC OPERATION AND
MENUS. (This does not apply to the DEFAULT screen).
7. The Control Point (LCW_STPT) displayed is the leaving chilled
water control point when the machine is in leaving chilled water
control and the entering chilled water control point when the
machine is in entering chilled water control.
8. The Chilled Water Temp (CHW_TMP) displayed is the leaving
water temperature when the machine is in leaving chilled water
control and the entering chilled water temperature when the
machine is in entering chilled water control.
Table 3 — ICVC Display Data (cont)
EXAMPLE 2 — MAINSTAT DISPLAY SCREEN
will be highlighted).
STATUS
NOTE 2
NOTE 3
0-15
0/1
1-3
0/1
0/1
–30-30
10-120
–40-245
40-100
0-999
0-999
4-20
4-20
–40-245
0-99999
0-8
0-500000.0
0-32767
0-1
0-20
0/1
0/1
UNITS
NOTE 2
NOTE 3
min
NO/YES
NOTE 4
STOP/START
OPEN/CLOSE
DEG F
DEG F
DEG F
%
%
%
mA
mA
DEG F
HOURS
HOURS
OPEN/CLOSE
mA
ENABLE/EMSTOP
NORMAL/ALARM
RUN STATUS DEFINITIONS
Timeout: The controls are delaying the start sequence until the Start
to Start or Stop to Start timers have elapsed.
Ready: The chiller is ready to begin the start sequence.
Recycle: The chiller has automatically shut down until the need for
cooling resumes.
Startup: The chiller has completed the prestart checks and has
energized the chilled water pump.
Running: The chiller has completed ramp loading following start up
Demand: The chiller is prevented from loading further because it
has reached the an AVERAGE LINE CURRENT Limit or a MOTOR
KILOWATTS Limit.
Ramping: The chiller has started and is slowly increasing its load to
control electrical demand charges.
Autorest: The chiller is starting back up due to a power failure and
auto-restart is enabled.
Override: The chiller is prevented from reaching full load by the con-
trols because the chiller is running close to an operational limit.
Tripout: The chiller has declared an alarm and has shut down.
Control Test: The operator has entered the Controls Test screen on
the ICVC.
Lockout: The compressor is prevented from starting so that chiller
may be safely pumped down to a vacuum.
Pumpdown: The refrigerant is being pumped out of the chiller, the
controls have energized the water pumps to prevent freeze-up.
Prestart: The chiller is in the process of the checks prior to energiz-
ing the compressor motor.
30
POINT
MODE
STATUS
T_START
OCC
SYS_ALM
CHIL_S_S
REMCON
T_RESET
LCW_STPT
CHW_TMP
DEM_LIM
AMPS_%
KW_P
AUTODEM
AUTORES
R_RESET
c_starts
STARTS
c_hrs
S_HRS
ICE_CON
REF_LEAK
ENABLE

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