Carrier 19XR - Password

INPUT TIME AND DATE — Access the TIME AND DATE
table on the SERVICE menu. Input the present time of day,
date, and day of the week. The HOLIDAY TODAY param-
eter should only be configured to YES if the present day is
a holiday.
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 CONFIGURATION IF NECESSARY —
From the SERVICE table, access the CVC CONFIGU-
RATION screen. From there, view or modify the CVC CCN
address, change to English or SI units, and change the pass-
word. If there is more than one chiller at the jobsite, change
the CVC 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 CONFIGURATION screen.
1. Press the MENU
and SERVICE softkeys. Enter the cur-
rent password and highlight CVC CONFIGURATION.
Press the SELECT
softkey. Only the last 5 entries on
the CVC CONFIG screen can be changed: BUS #,
ADDRESS #, BAUD RATE, US IMP/METRIC, and
PASSWORD.
2. Use the ENTER
softkey to scroll to PASSWORD. The
first digit of the password is highlighted on the screen.
3. To change the digit, press the INCREASE
or
DECREASE
softkey. When the desired digit is seen, press
the ENTER
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 goes to the BUS
parameter. Press the EXIT
softkey to leave that screen
and return to the SERVICE menu.
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_PSWD menu on the STATUS screen is
accessed by a Carrier representative.
TO CHANGE THE CVC DISPLAY FROM ENGLISH TO
METRIC UNITS — By default, the CVC displays informa-
tion in English units. To change to metric units, access the
CVC CONFIGURATION screen:
1. Press the MENU and SERVICE softkeys. Enter the
password and highlight CVC CONFIGURATION. Press
the SELECT
softkey.
2. Use the ENTER softkey to scroll to US IMP/METRIC.
3. Press the softkey that corresponds to the units desired for
display on the CVC (e.g., US or METRIC).
MODIFY CONTROLLER IDENTIFICATION IF NECES-
SARY — The CVC module address can be changed from
the CVC CONFIGURATION screen. Change this address
for each chiller if there is more than one chiller at the job-
site. Write the new address on the CVC module for future
reference.
INPUT EQUIPMENT SERVICE PARAMETERS IF NEC-
ESSARY — The EQUIPMENT SERVICE table has six serv-
ice tables.
Configure SERVICE Tables — Access the SERVICE tables,
depicted on the next page, to modify or view the following
to job site parameters:
PARAMETER TABLE
Starter Type ISM_CONF — Select 0 for full voltage,
1 for reduced voltage, or 2 for solid state/
variable frequency drive.
Motor Rated Line
Voltage
ISM_CONF — Enter actual line voltage
from power screen.
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
nameplate data.
Motor Locked Rotor
Trip
ISM_CONF — Per chiller identification
nameplate data. Enter locked rotor delta
amps (LR AMPS D-).
Starter LRA Rating ISM_CONF — Enter value from name-
plate in starter cabinet.
Motor Current
CT Ratio
ISM_CONF — Enter ratio (reduced to a
ratio to 1) of current transformers wired
to terminal J4 of ISM.
Ground Fault
Current
Transformers
ISM_CONF — Enter 0 if three ground
fault CTs are wired to terminal J5 of ISM.
Enter 1 if one ground fault CT is 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 protec-
tion 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 protec-
tion required for drop in line frequency.
Surge LImiting or
Hot Gas Byapss
Option
OPTIONS — Enter 1 if HGBP is
installed.
Minimum Load
Points (T1/P1)
OPTIONS — Per job data — See modify
load points section.
Full (Maximum)
Load Points
(T2/P2)
OPTIONS — Per job data — See modify
load points section.
Chilled Medium SEETUP1 — Enter water or brine.
Evaporator
Refrigerant
Trippoint
SETUP1 — Usually 3° F (1.7° C) below
design refrigerant temperature.
Evaporator Flow
Delta P Cutout
SETUP1 — Enter 50% of design
pressure drop to 0.5 psi (3.4 kPa).*
Condenser Flow
Delta P Cutout
SETUP1 — Enter 50% of design
pressure drop to 0.5 psi (3.4 kPa).*
Diffuser Option SETUP2 — ENABLE for 5 size
compressor only. See model number
nomenclature.
Diffuser Full Span
mA Rating
SETUP2 — Enter diffuser actuator full
span mA rating for 5 size compressor
only. Value is located on label on side of
diffuser actuator motor.
Motor Rated
Kilowatts
RAMP_DEM — Enter value from chiller
requisition form (product data submittal) if
kilowatt ramp demand is enabled.
*With variable flow systems this point may be configured to the lower
end of the range.
NOTE: Other parameters on these screens are normally left at the
default settings; however, they may be changed by the operator as
required. The time and persistence settings on the ISM_CONF table
can be adjusted to increase or decrease the sensitivity to a fault
condition. Increasing time or persistence decreases sensitivity. De-
creasing time or persistence increases sensitivity to the fault
condition.
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