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Air and Water cooled inverter chillers and heat pump
D-EOMZC00105-17EN
Operation Manual
52/84
EWAD TZ - EWAD TZ B -EWWD VZ
Air and Water cooled inverter chillers and
heat pump
5.7 Liquid Injection Control
Liquid injection will be activated when the discharge temperature rises above a safety limit temperature to
avoid compressor components overheating.
Liquid injection will be turned off when the discharge temperature decreases below the activation
5.8 Variable Volume Ratio Control
VVR (Variable Volume Ratio) slides in the compressor adapt discharge port geometry to achieve optimum
compressor efficiency according to chiller operating conditions. The proper Compressor Volume Ratio is
determined by the application basing on pressure ratio present value and obtained energizing slides to drive
them in the needed position. Number of available volume ratios depends on compressor model.