Introduction - Danfoss AK-CC55 Multi Coil User Manual

AK-CC55 Multi Coil

Introduction

Application
Complete refrigeration appliance control with great flexibility to adapt to refrigeration appliances and cold storage
rooms.
Advantages:
• Universal controller for control of up to 3 AKV valves in same refrigeration section
• Quick set-up with predefined settings
• Easy configuration 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
with liquid ejectors
Principle
The temperature in the appliance is registered by one to three S4 air temperature sensors which can be located in
the air flow of the evaporator. A setting for display read-out determines, if thermostat A temperature, the average S4
temperature or the highest S4 temperature is read out in the display.
If two displays are connected, it can be selected to read-out thermostat A temperature in display 1 and thermostat B
temperature in display 2.
The temperature of the evaporator is registered with one or two S5 sensors which can be used as a defrosting
sensor.
In addition to the outputs of the electronic AKV injection valves, the controller has relay outputs which are defined
by the application setting.
Figure 1: AK-CC55 with evaporator, AKV valve and sensor positions
AKV
Hint: On cold rooms the S4 sensor can be placed at the air inlet of the evaporator.
© Danfoss | Climate Solutions | 2022.08
S4/S4B/S4C
S2/S2B/S2C
P
S5/S5B
systems
2
BC365022028193en-000201 | 5