Communication Option Wiring; Lead-Lag Control Wiring; Install Field Insulation - Carrier AquaEdge 23XRV Installation Instructions Manual

Table 22 — Cable Manufacturers
MANUFACTURER
ALPHA
AMERICAN
BELDEN
COLUMBIA
When connecting the CCN communication bus to a system ele-
ment, a color code system for the entire network is recommended
to simplify installation and checkout. See Table 23 for the recom-
mended color codes.
Table 23 — Insulator Codes
CCN BUS
SIGNAL TYPE CONDUCTOR
INSULATION COLOR
+ Red
GROUND Black
– White
If a cable with a different color scheme is selected, a similar color
code should be adopted for the entire network.
At each system element, the shields of its communication bus ca-
bles must be tied together. If the communication bus is entirely
within one building, the resulting continuous shield must be con-
nected to ground at only one single point. See Fig. 63. If the com-
munication bus cable exits from one building and enters another,
the shields must be connected to ground at the lightening suppres-
sor in each building where the cable enters or exits the building
(one point only).
To connect the 23XRV chiller to the network, proceed as follows
(see Fig. 63):
1. Route wire through knockout in back of control panel.
2. Strip back leads.
3. Attach red to "+" terminal and black to "G" terminal and
white to "–" terminal of CCN Network interface located in
the control panel.

Communication Option Wiring

The PIC6 control system support multiple building automation
protocols. Controller can communicate via BACnet
BACnet/IP, Modbus 2 RTU or Modbus TCP/IP. Note that PIC6
Port J8 is used for BACnet MS/TP or Modbus RTU protocols.
1. BACnet is a trademark of ASHRAE.
2. Modbus is a registered trademark of Schneider Electric.
CABLE NO.
2413 or 5463
A22503
8772
02525
CCN NETWORK
INTERFACE
(CONTROL PANEL)
+
G
–
MS/TP,
1
62
User will need a 1x Phoenix connector 1757035 (not factory
provided) in order to connect to J8. Consult the latest Controls
Operation and Troubleshooting book for further details.
Note that establishing communication between a site building
automation system and the PIC6 controller is not part of the stan-
dard Carrier startup process. If it is necessary to support chiller
control integration with the site building automation system, it
will require a request from the Carrier Service Office/Distributor
for a control technician to complete this task and additional
charges will apply.

Lead-Lag Control Wiring

The 23XRV chiller can be wired for lead-lag operation in ei-
ther series or parallel. See Fig. 68 and 69 for applicable wiring
schematics.

Install Field Insulation

CAUTION
Protect insulation from weld heat damage and weld splatter.
Cover with wet canvas cover during water piping installation.
When installing insulation at the job site, insulate the following
components:
• compressor
• discharge pipe assembly
• cooler shell
• cooler tube sheets
• condenser shell
• condenser tubesheets
• suction piping
• economizer
• economizer muffler
• motor cooling drain
• oil reclaim piping
• vaporizer chamber
• refrigerant liquid line to cooler
NOTE: Insulation of the waterbox covers is applied only at the
jobsite by the contractor. When insulating the covers, make
sure there is access for removal of waterbox covers for servic-
ing. See Fig. 70 for the insulation area for units with the P com-
pressor. See Fig. 71 for the insulation area for units with the
Q compressor. See Fig. 72 for the insulation area for units with
the R compressor.