Filter
Top Products
56
NOTE: Because a schedule is integral to the chiller control
sequence, the chiller will not start until the time and date have
been set.
CHANGE CVC/ICVC CONFIGURATION IF NECES-
SARY — From the SERVICE table, access the CVC/ICVC
CONFIGU-RATION screen. From there, view or modify the
CVC/ICVC CCN address, change to English or SI units, and
change the password. If there is more than one chiller at the
jobsite, change the CVC/ICVC address on each chiller so that
each chiller has its own address. Note and record the new
address. Change the screen to SI units as required, and change
the password if desired.
TO CHANGE THE PASSWORD — The password may be
changed from the CVC/ICVC CONFIGURATION screen.
1. Press the and softkeys. Enter the
current password and highlight CVC/ICVC CONFIGU-
RATION. Press the softkey. Only the last
5 entries on the CVC/ICVC CONFIG screen can be
changed: BUS #, ADDRESS #, BAUD RATE, US IMP/
METRIC, and PASSWORD.
2. Use the softkey to scroll to PASSWORD. The
first digit of the password is highlighted on the screen.
3. To change the digit, press the or
softkey. When the desired digit is seen,
press the softkey.
4. The next digit is highlighted. Change it, and the third and
fourth digits in the same way the first was changed.
5. After the last digit is changed, the CVC/ICVC goes to the
BUS parameter. Press the softkey to leave that
screen and return to the SERVICE menu.
TO CHANGE THE CVC/ICVC DISPLAY FROM
ENGLISH TO METRIC UNITS — By default, the CVC/
ICVC displays information in English units. To change to met-
ric units, access the CVC/ICVC CONFIGURATION screen:
1. Press the and softkeys. Enter the
password and highlight CVC/ICVC CONFIGURATION.
Press the softkey.
2. Use the softkey to scroll to US IMP/METRIC.
3. Press the softkey that corresponds to the units desired for
display on the CVC/ICVC (e.g., US or METRIC).
CHANGE LANGUAGE (ICVC Only) — By default, the
ICVC displays information in English. To change to another
Language, access the ICVC CONFIGURATION screen:
1. Press the and softkeys. Enter the
password and highlight ICVC CONFIGURATION. Press
the softkey.
2. Use the softkey to scroll to LID LANGUAGE.
3. Press the INCREASE or DECREASE softkey until the
desired language is displayed. Press to confirm
desired language.
MODIFY CONTROLLER IDENTIFICATION IF NECES-
SARY — The CVC/ICVC module address can be changed
from the CVC/ICVC CONFIGURATION screen. Change this
address for each chiller if there is more than one chiller at the
jobsite. Write the new address on the CVC/ICVC module for
future reference.
INPUT EQUIPMENT SERVICE PARAMETERS IF NEC-
ESSARY — The EQUIPMENT SERVICE table has six
service tables.
Configure SERVICE Tables
— Access the SERVICE tables,
shown in Table 2, to modify or view job site parameters:
*With variable flow systems this point may be configured to the lower end of
the range.
NOTE: Other parameters: Screens are normally left at the default settings; they
may be changed by the operator as required. The time and persistence set-
tings on the ISM_CONF table can be adjusted to increase or decrease the sen-
sitivity to a fault condition. Increasing time or persistence decreases sensitivity.
Decreasing time or persistence increases sensitivity to the fault condition.
Be sure to remember the password. Retain a copy
for future reference. Without the password, access to the
SERVICE menu will not be possible unless the CVC/
ICVC_PSWD menu on the STATUS screen is accessed by
a Carrier representative.
MENU SERVICE
SELECT
ENTER
INCREASE
DECREASE
ENTER
EXIT
MENU SERVICE
SELECT
ENTER
MENU SERVICE
SELECT
ENTER
ENTER
PARAMETER TABLE
Starter Type ISM_CONF — Select 0 for full voltage, 1 for
reduced voltage, or 2 for solid state/variable fre-
quency drive.
Motor Rated Line
Voltage
ISM_CONF — Motor rated voltage from chiller
information nameplate.
Volt Transformer
Ratio
ISM_CONF — Enter ratio (reduced to a ratio to
1) of power transformer wired to terminal J3 of
ISM. If no transformer is used enter 1.
Motor Rated
Load Amps
ISM_CONF — Per chiller identification name-
plate data.
Motor Locked
Rotor Trip
ISM_CONF — Per chiller identification name-
plate data. Enter locked rotor delta amps (LR
AMPS D-).
Starter LRA
Rating
ISM_CONF — Enter value from nameplate in
starter cabinet
Allen -Bradley this appears as “max locked rotor
current @100% nom. voltage.”
Benshaw Starters: value is entered as 9999.
Motor Current
CT Ratio
ISM_CONF — Enter ratio (reduced to a ratio to
1) of current transformers wired to terminal J4 of
ISM. For Benshaw Inc. RediStart MICRO™
Starters set to 100.
Ground Fault
Current
Transformers
ISM_CONF — Enter 0 if no ground fault CTs are
wired to terminal J5 of ISM. Enter 1 if ground
fault CTs are used.
Ground Fault
CT Ratio
ISM_CONF — Enter ratio (reduced to a ratio to
1) of ground fault CT.
Single Cycle
Dropout
ISM_CONF — ENABLE if motor protection
required from drop in line voltage within one
cycle.
Line Frequency ISM_CONF — Enter YES for 60 Hz or NO for 50
Hz.
Line Frequency
Faulting
ISM_CONF — ENABLE if motor
protection required for drop in line
frequency.
Surge Limiting or
Hot Gas Bypass
Option
OPTIONS — Enter 1 if HGBP is installed.
Minimum Load
Points (T1, P1)
OPTIONS — Per Chiller Requisition (DT1, DP2)
if available or per job data — See modify load
points section.
Full (Maximum)
Load Points (T2, P2)
OPTIONS — Per Chiller Requisition (DT2, DP2)
if available or per job data — See modify load
points section. For VFD units refer to table
located in control panel.
Chilled Medium SETUP1 — Enter water or brine.
Evaporator
Refrigerant
Trippoint
SETUP1 — Usually 3° F (1.7° C) below design
refrigerant temperature.
Evaporator Flow
Delta P Cutout
SETUP1 — Per Chiller Requisition if available or
enter 50% of design pressure drop to 0.5 psi (3.4
kPa).*
Condenser Flow
Delta P Cutout
SETUP1 — Per Chiller Requisition if available or
enter 50% of design pressure drop to 0.5 psi (3.4
kPa).*
Diffuser Option
(Compressors with Split
Ring Diffusers)
SETUP2 — ENABLE for 4 and 5 size compres-
sor. See model number nomenclature.
Diffuser Full Span
mA Rating
(Compressors with Split
Ring Diffusers)
SETUP2 — Enter diffuser actuator full span mA
rating for 4 and 5 size compressor. Value is
located on label on side of diffuser actuator
motor.
Motor Rated
Kilowatts
RAMP_DEM — Enter value from chiller requisi-
tion form (product data submittal) if kilowatt ramp
demand is enabled.