Carrier CSM Control Operation And Troubleshooting Instructions

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.PC 111 Catalog No. 533-396 Printed in U.S.A. Form 33CN-1T Pg 1 1202 11-02 Replaces: NewBook 1 4Tab 11a 13aControls Operation andTroubleshooting InstructionsCONTENTSPageGENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . 1-5Default Address and Baud Rate . . . . . . . . . . . . . . . . . . 1Input Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Output Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3I/O Type Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . 5CONFIGURATION TABLES . . . . . . . . . . . . . . . . . . . . .5-11Alarm Service Configuration . . . . . . . . . . . . . . . . . . . . . 5Service Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Time Broadcast Configuration . . . . . . . . . . . . . . . . . . . 7Holiday Configuration Screens . . . . . . . . . . . . . . . . . . . 8Time Schedule Configuration . . . . . . . . . . . . . . . . . . . . 8Points Display Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Occupancy Maintenance Table . . . . . . . . . . . . . . . . . . . 9CSM III INTERFACE REQUIREMENTS . . . . . . . . .11,12Chiller Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11CCN Control Variables . . . . . . . . . . . . . . . . . . . . . . . . . . 12CONTROL ALGORITHMS. . . . . . . . . . . . . . . . . . . . . .12,13Control Modes (Shutdown/Local/CCN/Stand-Alone) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Chiller Start/Stop Function . . . . . . . . . . . . . . . . . . . . . . 12Chilled Water Set Point Reset Function . . . . . . . . . 13Demand Limit Function . . . . . . . . . . . . . . . . . . . . . . . . . 13Alarm Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13GENERALThe CSM Chiller Interface allows chillers not manufacturedby Carrier and older Carrier chillers to communicate over aCarrier Comfort Network (CCN) in order to become part of asystem controlled by a Chiller System Manager III (CSM III).NOTE: The CSM Chiller Interface is NOT compatible withthe Flotronic™ System Manager.The CSM Chiller Interface provides hardwired control ofchillers using industry standard I/O methods, such as thermistorsensor inputs, discrete outputs driving field-supplied relays, and0 to 10 vdc or 4 to 20 mA control signals. The CSM III supportsa service function (CCN/Local) to allow a chiller to be rununder local control without disturbing the overall controlsystem. Stand-alone control functions are enabled if CSM IIIcommunications fail. The Chiller Interface provides alarmmessages, display tables, and configuration tables that arecompatible with standard CCN interfaces.The Chiller Interface can be installed on centrifugal com-pressor, screw compressor, and reciprocating compressorchillers manufactured by Carrier, Trane, York, McQuay, andothers, providing those chillers meet the Chiller Interface’s I/Orequirements. One Chiller Interface is required for each indi-vidual chiller. A pictorial representation of the CSM III/ChillerInterface system is shown in Fig. 1.CONTROLSThe Chiller Interface provides the following functions:• allows a non-CCN equipped chiller to participate in amultiple chiller system with CSM III (up to 8 chillers)• provides chiller start/stop, chilled water reset, anddemand limiting control functions• provides a Time Schedule backup mode for local controland in the event of CSM III communication failure(stand-alone mode)• provides CCN user access (through configuration anddisplay screens) and CCN alarm messages• provides adjustable communications baud rate from9600 (default) to 38,400 bpsThe Chiller Interface must be installed on the same CCNbus as the CSM III. The pump control must be provided by thenative chilled water plant controls and is not provided by theCSM Chiller Interface.Chillers to which the Chiller Interface is connected mustsupport specific input types such as contact closure for chillerstart/stop, and 0 to 10 vdc or 4 to 20 mA inputs for chilledwater set point reset and demand limiting.The Chiller Interface consists of an outdoor rated version ofthe Comfort Controller 1600 module (CC1600) with special-ized software. The module is connected to the CCN (Level IIBus) through its primary communication port (RS-485). Themodule’s I/O channels are connected to the native chiller con-troller and to sensors installed at the chiller.INSTALLATION CONSIDERATIONSThe Chiller Interface is field-installed in a standard CCNenclosure and powered from a standard CCN power supply.All installations must comply with local wiring codes.The Chiller Interface can be returned to its factory configu-ration by installing a LID cable jumpered between CCN RJ-11and I/O RJ-11 and cycling power. To perform a reset, theChiller Interface must be disconnected from the CCN bus.Also, the CCN address will default back to 0, 1.Figure 2 shows the location of the power connector.Figure 3 shows the location of the communication connector.Default Address and Baud Rate — The CSM ChillerInterface’s default address is 0,99 (bus number, system elementnumber). Default baud rate is 9600 bps. The address and baudrate can be set using Address Search in Network Service Tool IVor Service Pack.Carrier Comfort NetworkCSM Chiller Interface