Carrier Comfort Network Interface (Ccn) - Carrier 19DV Series Installation, Operation And Maintenance Instructions

1.3 Equipment installation and all starting and control devices must comply with details in equipment submittal
drawings and literature.
1.4 Contacts and switches are shown in the position they would assume with the circuit deenergized and the
chiller shutdown.
1.5 Warning — Do not use aluminum conductors.
1.6 Warning — Remove panel above VFD main circuit breaker before drilling. Do not drill into any other VFD cabi-
net panels.
II Power Wiring To VFD
2.0 Provide a means of disconnecting branch feeder power to VFD. Provide short circuit protection and interrupt
capacity for branch feeder in compliance with all applicable codes.
2.1 Metal conduit must be used for the power wires, from VFD to branch feeder.
2.2 Line side power conductor rating must meet VFD nameplate voltage and chiller full load amps (minimum
circuit ampacity).
2.3 Lug adapters may be required if installation conditions dictate that conductors be sized beyond the minimum
ampacity required. Circuit breaker lugs will accommodate the quantity (#) and size cables (per phase) as follows.
If larger lugs are required, they can be purchased from the manufacturer of the circuit breaker (Cutler-Hammer or
Square D).
2.4 Compressor motor and controls must be grounded by using equipment grounding lug provided inside unit-
mounted VFD enclosure.
VFD type
Rockwell 2CC
Rockwell 4CC
IMPORTANT: Before connection of the main power cables (L1 - L2 - L3) on the terminal block, it is imperative to
check the correct order of the 3 phases before proceeding to the connection on then terminal block or the main
disconnect/isolator switch.

3.6.5 Carrier Comfort Network Interface (CCN)

The Carrier 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 system 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 Fig. 33 for location of the CCN network connections on the terminal strip labelled CCN.
Conductors and drain wire must be 0.5mm2 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 -20 °C to
60 °C is required. See table below for cables that meet the requirements.
When connecting the CCN communication bus to a system element, a color code system for the entire network is
recommended to simplify installation and checkout. The following color code is recommended:
Signal type
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 cables must be tied together. If the communication
bus is entirely within one building, the resulting continuous shield must be connected to ground at only one single
point. See Fig. 33. If the communication bus cable exits from one building and enters another, the shields must be
connected to ground at the lightening suppressor in each building where the cable enters or exits the building (one
point only).
To connect the 19DV chiller to the network, proceed as follows (see Fig. 33):
1. Route wire through knockout in back of control panel.
2. Strip back leads.
VFD max input amps
608
900
CCN Bus Conductor
Insulation Color
+ Red
Ground White
- Black
Maximum connectable wire sections
Conductors qty
3
4
CCN Network
Interface (PIC5+
Touch Screen Panel)
Sections (mm2)
95 to 240
50 to 300
+
G
-
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