Introduction
Application
Complete refrigeration appliance control with great exibility to adapt to refrigeration appliances and cold storage
rooms.
Advantages:
• Universal controller for several dierent refrigeration appliances
• Quick set-up with predened settings
• Easy conguration and service using a mobile app with Bluetooth
• Energy optimization of the whole refrigeration appliance
• Adaptive Minimum Stable Superheat (MSS) control is performed with lowest possible superheat
• Allows the suction pressure to be raised several degrees
• Adaptive Liquid Control (ALC) can be performed with superheat down to 0 degrees on transcritical CO
2
systems
with liquid ejectors
Principle
The temperature in the appliance is registered by one or two temperature sensors which are located in the air ow
before the evaporator (S3) or after the evaporator (S4) respectively. A setting for thermostat, alarm thermostat and
display reading determines the inuence the two sensor values should have for each individual function.
In addition, product sensor S6, which can be optionally placed in the appliance, can be used for registration and
alarming of the temperature near the food items.
The temperature of the evaporator is registered with the S5 sensor which can be used as a defrosting sensor.
In addition to the output of the electronic AKV injection valve, the controller has relay outputs which are dened by
the application setting.
Figure 1: AK-CC55 with evaporator, AKV valve and sensor positions
© Danfoss | Climate Solutions | 2021.02 BC364229688105en-000101 | 5
AK-CC55 Single Coil and Single Coil UI
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