Installing the UPC Open
UPC Open Carrier Proprietary and Confidential CARRIER CORPORATION ©2017
Installation and Integration Guide All rights reserved
7
Wiring the UPC Open to the CCN network
The UPC Open's CCN Port communicates using EIA RS-485 and supports 9600 bps. Future versions will support
baud rates of 19.2 and 38.4 kbps.
NOTES
• The UPC Open is intended to be wired directly to one piece of Carrier equipment.
NOTE The exception is a Multiple Chiller application, which consists of 2 or 3 chillers configured for
Lead/Lag, with a potential third chiller as a standby chiller. In this application, wire the CCN network between
the UPC Open and chillers in a daisy-chain configuration. All other applications have one network segment
between the UPC Open and the interfaced Carrier equipment.
• Refer to the CCN Installation and Start-up Guide for more details on wiring the CCN bus.
Multiple chiller application only (Lead/Lag, and, possibly, a standby chiller)
Single unit application
Wiring specifications for CCN
20 AWG, general purpose, 3-conductor, foil shielded copper wire
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