Installation Guide
Temperature controller for walk-in coolers
and freezers, Type AK-RC 204B and AK-RC 205C
© Danfoss | Climate Solutions | 2022.08
AN41473467835501-000102 | 1
080R9293
AN41473467835501-000102
Warnings
• Using the unit without observing the manufacturer's instructions may alter the appliance's safety requirements. Only probes
supplied by Danfoss should be used for the unit to operate correctly.
• From -40 – +20 °C, if the NTC probe is extended to 1000 m with at least 0.5 mm
2
cable, the maximum deviation will be 0.25 °C
• It should be installed in a place protected from vibrations, water and corrosive gases, where the ambient temperature does not
exceed the value indicated in the technical data.
• For the reading to be correct, the probe should be used in a place without heat inuences apart from the temperature you want to
measure or control.
• IP65 protection degree is only valid with the protection cover closed.
• IP65 protection degree is only valid if the cables enter the device using a tube for electric conductions + gland with IP65 or above.
The size of the glands should be suitable for the diameter of the tube used.
• Do not spray the unit directly with high-pressure hoses, as this could cause damage.
IMPORTANT:
• Before starting the installation, you must take the advice of local regulations in force.
• The AUXILIARY relays are programmable, and their operation depends on the conguration.
• The function of the digital inputs depends on the conguration.
• The recommended currents and powers are the maximum working currents and powers.
EN : Temperature controller for walk-in coolers and freezers, type AK-RC 204B and AK-RC 205C ......................................................................................................1
ES : Controlador de temperatura para cuartos fríos y congeladores, tipo AK-RC 204B y AK-RC 205C .............................................................................................9
FR : Régulateur de température pour chambres froides et congélateurs, type AK-RC 204B et AK-RC 205C ............................................................................... 17
DE : Temperaturregler für begehbare Kühl- und Gefrierschränke, typ AK-RC 204B und AK-RC 205C ............................................................................................ 25
PT-BR : Controlador de temperatura para câmaras frigorícas e congeladores, tipo AK-RC 204B e AK-RC 205C ............................................................................ 33
Wiring
Always disconnect the power supply to do the wiring.
The probes and their cables should NEVER be installed in a conduit together with power, control or power supply cables.
For disconnection, the power supply circuit must be equipped with a switch of at least 2 A, 230 V, located near the device. The power
supply cable will be H05VV-F or NYM 1x16/3. The section to be used will depend on the local standard in force, but must never be less
than 2.5 mm
2
.
Cables for relay or contactor outputs should have a section of 2.5 mm
2
, allow working temperatures equal to or over 70 °C and be
installed with as few bends as possible.
The 120/230 V~ wiring must be kept clear of any other external element.
The wiring to be done depends on the type of installation. Use the appropriate diagram based on the option selected in the
wizard. Check the available options on the diagrams included in the controller's packaging.
Wizard refers to a built in tool to guide the user through the set up process.
Maintenance
• Clean the surface of the unit with a soft cloth, water and soap.
• Do not use abrasive detergents, petrol, alcohol or solvents, as this might damage the unit.
ENGLISH
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