RTAC-SVX01J-EN 5
Low Evaporator Refrigerant Cutout, Glycol Recommendations .............................. 53
Procedure ......................................................................... 53
Specials ........................................................................... 53
Installation - Mechanical — Remote Evaporator Option .................................... 55
System Configuration and Interconnecting Refrigerant Piping .............................. 55
Line Sizing ........................................................................... 59
Liquid Line Sizing Steps .............................................................. 59
Suction Line Sizing Steps ............................................................. 60
Suction Accumulator Sizing ........................................................... 60
Piping Installation Procedures .......................................................... 61
Refrigerant Sensors ................................................................... 61
Refrigerant Pressure Relief Valve Venting ................................................ 61
Leak Test and Evacuation .............................................................. 62
Refrigerant and Additional Oil Charge ................................................... 63
Refrigerant Charge Determination ..................................................... 63
Oil Charge Determination ............................................................. 63
Installation - Electrical ................................................................... 64
General Recommendations ............................................................ 64
Installer-Supplied Components ......................................................... 85
Power Supply Wiring ................................................................ 85
Control Power Supply ................................................................. 86
Heater Power Supply and Convenience Outlet (Packaged Units Only) ........................ 86
Interconnecting Wiring ................................................................ 87
Chilled Water Pump Control .......................................................... 87
Alarm and Status Relay Outputs (Programmable Relays) ................................... 88
Relay Assignments Using TechView ..................................................... 88
Low Voltage Wiring ................................................................... 88
Emergency Stop .................................................................... 89
External Auto/Stop .................................................................. 89
External Circuit Lockout – Circuit #1 and #2 .............................................. 89
Ice Building Option .................................................................. 89
External Chilled Water Setpoint (ECWS) Option .......................................... 89
External Current Limit Setpoint (ECLS) Option ........................................... 90
Chilled Water Reset (CWR) ............................................................ 90
Communications Interface options ...................................................... 91
Optional Tracer Communications Interface .............................................. 91
LonTalk Communications Interface for Chillers (LCI-C) ..................................... 91
BACnet Communications Interface (BCI-C) ............................................... 92
Object and Diagnostic Data Points with Corresponding Chiller Models ....................... 98
BCI-C Alarming .................................................................... 105
Operating Principles ................................................................... 106
Refrigeration Cycle ................................................................... 106
Refrigerant R-134a ................................................................... 106
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