Danfoss EKC 326A - Advanced Function Explanations; Extra Refrigeration Capacity; Heat Recovery Pressure Reference

EKC 326A Manual RS8FM602 © Danfoss 02-2016 5
Increasing pressure reference with heat recovery
The function will increase the gas pressure reference to the Pgc HR
Min. value when it receives a signal.
The function is activated by an on/o signal at the voltage input.
Increasing pressure reference with heat recovery, variable
reference
The function will increase the gas pressure reference to the value
where it receives a signal.
The function is activated by a voltage signal between 0-10 V.
• Between 0-2 V it is regulated normally
• At 2 V the reference changes to the setting “Pc HR Min”
• At 10 V the reference will increase further using the setting
“Pgc HR oset”
• Between 2-10 V the reference is variable.
Extra refrigeration capacity (“extra compressor”)
This function improves the system’s refrigeration capacity by
increasing the reference pressure (Pgc Ref ) in the gas cooler. The
cooling performance increases to Q0+dh0.
The function also increases the load on the compressor motor as
pressure increases. Power consumption increases to Qm+dQm.