Emerson SZV22 Manuale Utente

The Compressor Module temperature is controlled by managing module oil fl ow and temperature. The 
module’s precise temperature control is critical to system performance and equipment life. Maintaining 
proper temperature control also reduces the possibility of gas condensing into liquids during operation.

•  Cooling fans require 24VDC, 4.5A (105 Watts) for the Compressor Module. Fan speed is controlled 

by a 0-10VDC control signal that is applied to the yellow lead on the fan terminal strip. Standard 
Compressor Modules use a nonlinear PTC thermistor to monitor oil temperature and provide a speed 
signal.

•  High temperature Compressor Modules use a linear NTC thermistor to monitor oil temperature. This 

signal is available to support a customer-provided fan speed control circuit.

•  All power connections are wired to terminal strips in a junction box on the Compressor Module.