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2. GENERAL DESCRIPTION
2.1. General Description
Carrier® SmartVu
TM
control is a control system for controlling Carrier 19 Series chiller which include both
legacy and next generation centrifugal water-cooled chillers. The control system monitors and controls
all operations of the chiller. The control system matches the cooling or heating capacity of the chiller to
the cooling or heating load while providing state-of-the-art chiller protection. The system controls cooling
or heating load within the set point plus and minus the dead band by sensing the water or brine
temperature and regulating the inlet guide vane via a mechanically linked actuator motor and regulating
VFD speed if the compressor is a variable speed compressor. The guide vane is a variable flow pre-whirl
assembly that controls the refrigeration effect in the cooler by regulating the amount of refrigerant vapor
flow into the compressor. An increase in guide vane opening increases capacity. A decrease in guide
vane opening decreases capacity. The control system protects the chiller by monitoring the digital and
analog inputs and executing capacity overrides or safety shutdowns, if required.
Carrier® SmartVu
TM
control also gives access to a Control Test function covering all outputs except
compressor relay outputs.
2.2. Abbreviations Used
The following abbreviations are used frequently:
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