Yazaki - Water Fired Single-Effect Chillers and Chiller-Heaters


Typical Field Wiring




OPTIONAL JUNCTION BOX CONNECTIONS
  • Remote cooling/heating mode selection (Model SH only)
  • Remote start/stop selection (All models)
  • Cooling tower fan control output (Alternative to CT Switch)
  • Heating/cooling mode status
  • Microturbine or engine override control output
  • General shutdown alarm output
OPTIONAL CONTROL BOX CONNECTIONS
  • Heat medium supply shutdown control output
  • Auxiliary boiler control output
  • Heat available input (Temp. switch supplied by others)
  • Cooling water flow input (Flow switch supplied by others)
OPTIONAL I/O BOARD CONNECTIONS
  • Shutdown interlock (Additional interlock)
  • Freeze protection switch inputs for chilled/hot water and heat medium circuits (Temp. switches supplied by others)
  • Chiller-heater standby status
  • Operating status
  • General fault alarm output