Installation manual

52 Magnitude™ Frictionless Centrifugal Chillers – Model WMC IM 1029-2
Connection to Chiller
Connection to the chiller for all BAS protocols will be at the unit controller. An interface card, depending on
the protocol being used, will have been factory installed in the unit controller if so ordered, or it can be field
installed.
Protocols Supported
Table 20, Standard Protocol Data
Protocol Physical Layer Data Rate Controller Other
BACnet/IP
Ethernet 10 Base-T 10 Megabits/sec Color graphics SBC Reference ED 15057: BACnet PICS
BACnet MSTP RS485 (TBD)
pCO Unit Controller
Reference ED 15057: BACnet PICS
LonTalk
FTT-10A 78kbits/sec
pCO Unit Controller
LONMARK Chiller Functional
Profile
Modbus RTU RS-485 (TBD)
pCO Unit Controller
NOTE: For additional information on the protocol data available through the BACnet or LonTalk
communications modules, reference Daikin ED 15062, MicroTech II Chiller Unit Controller Protocol
Information.
M
odbus - When selected, the ident number and baud can also be changed to suit the application.
L
ONWORKS – When selected, the ident number and baud rate setpoints are not available. Baud rate is locked at
4800.
BACnet – When selected, the ident number and baud rate setpoints are not available. Baud rate is locked at
19200.
If an interface module was ordered, one of the following BAS interface installation manuals was shipped with
the unit. If necessary, contact your local Daikin sales office for a replacement or obtain from
www.DaikinApplied.com .
Modbus: IM 743
LonWorks: IM 735
BACnet Ethernet or IP: IM 837
BACnet MS/TP: IM 906