Carrier Comfort Network; Interface; Power Up The Controls And Check The; Oil Heater - Carrier AquaEdge 23XRV Start-Up, Operation And Maintenance Instructions Manual

With the tester connected to the motor leads, take 10 second
and 60 second megaohm readings as follows:
1. Tie terminals 1, 2, and 3 together and test between the
grouped motor terminals and ground.
2. Divide the 60-second resistance reading by the 10-second
reading. The ratio, or polarization index, must be one or
higher. Both the 10 and 60-second readings must be at
least 50 megohms.
3. If the readings are unsatisfactory, repeat the test with the
motor leads disconnected from the motor. Satisfactory
readings in this second test indicate the fault is in the
power leads.

Carrier Comfort Network

Comfort Network (CCN) communication bus wiring is
supplied and installed by the electrical contractor. It consists of
shielded, 3-conductor cable with drain wire.
The system elements are connected to the communication
bus in a daisy chain arrangement. The positive pin of each sys-
tem element communication connector must be wired to the
positive pins of the system element on either side of it. The
negative pins must be wired to the negative pins. The signal
ground pins must be wired to the signal ground pins. See the
23XRV Installation Instructions.
NOTE: Conductors and drain wire must be 20 AWG (Ameri-
can Wire Gage) minimum stranded, tinned copper. Individual
conductors must be insulated with PVC, PVC/nylon, vinyl,
Teflon, or polyethylene. An aluminum/polyester 100% foil
shield and an outer jacket of PVC, PVC/nylon, chrome vinyl,
or Teflon with a minimum operating temperature range of –4 F
to 140 F (–20 C to 60 C) is required. See table below for cables
that meet the requirements.
MANUFACTURER
ALPHA
AMERICAN
BELDEN
COLUMBIA
When connecting the CCN communication bus to a system
element, a color code system for the entire network is recom-
mended to simplify installation and checkout. The following
color code is recommended:
CCN BUS CONDUCTOR
SIGNAL TYPE
INSULATION COLOR
+
GROUND White or Clear
–
Power Up the Controls and Check the Oil
Ensure that an oil level is visible in the oil sump
Heater —
before energizing the controls. A separate 15A control power
circuit breaker in the control center energizes the oil heater and
the control circuit. When first powered, the ICVC should dis-
play the default screen within a short period of time.
The oil heater is energized when power is applied to the
control circuit. This should be done several hours before start-
up to minimize oil-refrigerant migration. The oil heater is
controlled by the PIC III controls and is powered through a
contactor on the power panel. This arrangement allows the
heater to energize when the main motor circuit breaker is off
for service work or extended shutdowns. The oil heater relay
status (OIL HEATER RELAY) can be viewed on the COM-
PRESS table on the ICVC. Oil sump temperature can be
viewed on the ICVC default screen.
SOFTWARE VERSION — The software part number is
labeled on the backside of the ICVC module. The software
The Carrier
®
Interface —
CABLE NO.
2413 or 5463
A22503
8772
02525
ICVC PLUG
J1
PIN NO.
Red 1
2
Black 3
version also appears on the ICVC CONFIGURATION screen
as the last two digits of the software part number.

Software Configuration

Do not operate the chiller before the control configurations
have been checked in the ICVC and a Control Test has
been satisfactorily completed. Protection by safety controls
cannot be assumed until all control configurations have
been confirmed.
As the 23XRV unit is configured, all configuration settings
should be written down. A log, such as the one shown on pages
CL-1 to CL-10, provides a convenient list for configuration
values.
It is recommended that all control configuration tables be
uploaded via Service Tool and stored for reference when the
software configuration is complete.
Input the Design Set Points —
SET POINT screen and view/modify the BASE DEMAND
LIMIT set point, and either the LCL SET POINT or the ECL
SET POINT. The PIC III module can control a set point to ei-
ther the leaving or entering chilled liquid. This control method
is set in the EQUIPMENT SERVICE (TEMP_CTL) table. The
default setting of ECL CONTROL OPTION is DSABLE so
the PIC III module will control the leaving chilled liquid tem-
perature.
Input the Local
Access the schedule OCCPC01S screen
(OCCPC01S) —
on the ICVC and set up the occupied time schedule according
to the customer's requirements. If no schedule is available, the
default is factory set for 24 hours occupied, 7 days per week
including holidays.
For more information about how to set up a time schedule,
see the Time Schedule Operation section, page 28.
The CCN Occupied Schedule (OCCPC03S) should be con-
figured if a CCN system is being installed or if a secondary
time schedule is needed.
NOTE: The default CCN Occupied Schedule OCCPC03S is
configured to be unoccupied.
Input Service Configurations —
figurations require the ICVC screen to be in the SERVICE
portion of the menu.
• CONTROL TEST
• EQUIPMENT CONFIGURATION
• VFD CONFIG DATA
• EQUIPMENT SERVICE
• TIME AND DATE
• ICVC CONFIGURATION (PASSWORD)
PASSWORD — When accessing the SERVICE tables, a
password must be entered. All ICVC are initially set for a pass-
word of 1-1-1-1.
INPUT TIME AND DATE — Access
DATE table on the SERVICE menu. Input the present time of
day, date, and day of the week. The HOLIDAY parameter
should only be configured to YES if the present day is a holi-
day.
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 ICVC CONFIGURATION IF NECESSARY —
From the SERVICE table, access the ICVC CONFIGURA-
TION screen. From there, view or modify the ICVC CCN
address, change to US Imperial (English) or Metric (SI) units,
LID Language, and change the password. If there is more than
75
WARNING
Access the ICVC
Occupancy Schedule
The following con-
the TIME AND