Commercial Refrigeration
VZN series: New model VZN220 released
The VZN series has been extended with the introduction of the new VZN220 model. This addition increases the available capacity range and expands application flexibility for systems using R290 refrigerant.
The update supports improved performance across heating and cooling applications.
Key features
- Extended capacity range with new VZN220 model
- Wide operating envelope supporting multiple applications
- Best-in-class seasonal efficiency for high-temperature heat pumps, chillers, and even CRAC units
- Improved efficiency enabled by CDS203 40 kW frequency converter
Technical details
- Wide operating range: −30 °C to +25 °C evaporating, up to 82 °C condensing
- Compatible with R290 refrigerant
- Large capacity modulation enabled by newly qualified CDS203 40 kW frequency converter
Nomenclature
Compressor specification
Operating envelope
R290 minimum suction superheat
New sales codes for VZN220 and CDS203 40 kW drive
Frequency converter: Single pack
Frequency converter: Industrial pack
Availability
VZN220 and CDS203 40 kW were released in April 2026.
Supporting documentation (Application guideline) and
Coolselector®2 (version: 5.6.13) have been updated to new version with VZN220 information.
Oil separators for transcritical CO₂: New OUB-TSR, OUB-TSN, and OUB-THR series
A new range of oil separators has been introduced to meet the demanding requirements of modern transcritical CO₂ refrigeration systems. Unmatched protection for your system.
Overview
The OUB-TSR, OUB-TSN, and OUB-THR series are designed to improve oil management, system reliability, and operational efficiency. The portfolio supports both serviceable and maintenance-free solutions.
Our latest oil separators are engineered to tackle the critical challenge of oil carryover in transcritical CO₂ applications. By effectively removing oil particles from the refrigerant, the OUB series helps prevent unplanned downtime and extends the lifetime of your system components.
Key features
Choose the model that best fits your application needs, with both serviceable and hermetic options available.
OUB-TSR/OUB-TSN – serviceable models for ultimate performance and serviceability
- Ultra-fine oil separation: achieves exceptional filtration down to 0.3 microns, ensuring the cleanest refrigerant possible.
- Expansive filtration area: features a large filtration surface of over 3300 cm², providing superior capacity and longer service intervals.
- Reduced downtime: proactively protects your system from the harmful effects of oil circulation, leading to more reliable operation.
OUB-THR – hermetic model for maintenance-free reliability
- Hermetically sealed design: Enables a true "fit and forget" solution with no maintenance required.
- Efficient filtration: Filters oil particles in the 3 to 10‑micron range.
- Long-lasting protection: Provides a significantly longer lifetime compared to traditional filters, reducing total cost of ownership.
Availability
Available as part of the updated oil separator portfolio.
NTZ 2-cylinder compressors: Qualified for R454A/C and R455A
NTZ 2-cylinder compressors have been qualified for use with the refrigerants R454A/C and R455A.
This update enables the replacement of higher GWP refrigerants (R404A and R507) in existing applications.
It supports compliance with evolving environmental regulations while maintaining system performance.
This change was implemented in May 2026.
Overview
The refrigeration industry has made significant progress in reducing the use of ozone-depleting refrigerants. A new trend of using synthetic refrigerants is emerging, driven by the global agenda on climate change and global warming. Synthetic refrigerants, particularly those with low Global Warming Potential (GWP), will play a crucial role in the industry. Danfoss is committed to supporting the development and application of these refrigerants, enabling our customers to achieve low GWP goals while enhancing energy efficiency.
The NTZ models listed below are qualified for use with refrigerants R454C and R455A, classified in Refrigerant Group 1. These refrigerants have a GWP below 150 and are classified as A2L, indicating low flammability properties. Please refer to European regulations (EN378, EN60335) and EPA rulings in the US for safe use. Outside of Europe and the USA, consult local regulations.
Qualified models
The following compressor models are qualified for use with R454A/C and R455A:
Technical considerations
All listed compressor models, starting with serial number SE1009657794, effective May 21st, 2026, are qualified for use with R454C and R455A within the defined operating envelope.
Nominal performance data and operating limits are available in the official documentation.
Please follow the corresponding operating maps for proper application of these refrigerants.
R454A/C and R455A are zeotropic refrigerants with a temperature glide of about 6 to 12 K and must be charged in the liquid phase. To prevent oil dilution, a crankcase heater is recommended. It protects against refrigerant migration and maintains the oil temperature 8–10 K above the saturated LP temperature. Tests should be conducted to ensure an appropriate oil temperature under all conditions. A PTC crankcase heater is recommended for all stand-alone compressors and split systems. Under extreme conditions, a belt-type crankcase heater may be used in addition to the PTC heater.
Ordering information
There is no change in the ordering process; compressor codes remain the same. Compressor nameplates will specify Refrigerant Group 1 and will include a flammable refrigerant marking to ensure clear identification and compliance with safety standards.
For more information, refer to the Coolselector®2 selection program available at our website.
Hydrocarbon compressors: Optimized with new refrigerant oil
Overview
Hydrocarbon compressors have been optimized through the introduction of a new refrigerant oil. The updated oil improves system performance and supports continued product reliability. The change is implemented across the hydrocarbon compressor portfolio.
Key updates
- Replacement of previous oil (1516-100) with Shrieve RFL 100-EP
- Improved performance and compatibility
In addition to the changes already communicated, the refrigerant oil previously used (1516-100) will also be replaced by the new Shrieve RFL 100-EP. This oil is used for hydrocarbon compressors with R600a.
The Shrieve RFL-100 EP is fully compatible and mixable with the previous 1516-100 oil. However, it is recommended to avoid mixing the oils to ensure optimal performance. During service and compressor replacement, the amount of residual old oil in the system must be kept to a minimum. This includes removing all oil from other components, such as oil separators. If necessary, perform an additional oil change to ensure optimal system performance.
NOTE: the compressor has been operating without any issues to date, an immediate oil change to the new RFL 100-EP refrigerant oil is not mandatory. The change can instead be carried out during the next scheduled service interval.
The implementation will take effect immediately.
Affected products
All hydrocarbon compressors (EX-)HG12P HC – (EX-)HG88e HC
Technical guidance
Selection tools and product details remain available via existing platforms.
- BOCK VAP selection software
- store.danfoss.com
- Literature & pictures
Please observe our guideline for the use of hydrocarbons with Bock® compressors.
Food Retail
AK-SM 800A: Software release 5.1 (incl. StoreView Web update)
A new software version 5.1 has been released for the AK-SM 800A System Manager series. The update introduces new features, performance improvements, and system enhancements. It also includes changes to system architecture that affect upgrade and rollback behavior.
A new Danux package (4.14.017.194) accompanies this release and should be installed prior to loading the AK SM 800A application update. Both packages are available on the ADAP-KOOL support site.
Software package 5.1 requires Danux 4.14.017.194
Overview
With the System Manager R5.1.x update, it will no longer be possible to downgrade
to an earlier software version as the database structure has undergone significant changes that prevent this.
It is strongly recommended to perform a full backup of the system database before starting the update. StoreView Web embedded will remain the default remote user interface, while the previous SvB5 interface will continue to be available for a limited period but will be removed in future releases.
Key updates
Release 5.1.x is a major update for the SM800A Series and is recommended for all customers. It includes multiple enhancements, new features, and fixes.
Key highlights are:
- Support for Danfoss Drives over Modbus
- Increased number of supported Skylight photocells
- Ability to set the Alarms screen as the home screen in StoreView Web (SvW)
- Additional details added in the System Report
- Updates to customer-specific feature (CPT) – not generally available
- Fix for issue where Modbus 2 could not be enabled if Modbus TCP was enabled first
Release 5.1 Full Change Log (System Manager)
Important considerations
For security reasons, the Service Tool (ST 500) port is now disabled by default. To enable a remote Service Tool tunnel connection, the port must be activated via the [Configuration --> Security], and it should be disabled again once the tunnel is no longer required.
In compliance with cyber security requirements, all new user accounts must be created with strong passwords containing at least 8 characters, including lowercase letters, one uppercase letter, a digit, and a special character.)
Security requirements
To help keep your Danfoss products secure and protected, we strongly recommend implementing cyber security best practices to maximize protection against malicious attacks.
Installation steps
Before proceeding with the update, perform a full unit backup and check for any open alarms.
Step1: Install Danux 4.14.017.194.lpk
- Using StoreView Browser 5 / StoreView Web select OS update and proceed with Danux upgrade
- Allow a few minutes to pass with the new OS installed
Important notes: This file size package is large and depending on your network speed may take >10 minutes to complete.
Do not interrupt power during the OS update. For systems utilizing DHCP it is advised that this update is performed locally, as IP address change is possible after re-booting.
Step 2: Update System Manager firmware (package 5.1.x.spk)
- Using StoreView Browser 5 / StoreView Web or local USB Flash drive, select OS update and proceed software upgrade.
Do not interrupt power during the software update - After installation is complete, review for correct system operation
Approved products
The table below shows approved AK-SM 800A portfolio versions suitable for software 5.1
Availability
Package 5.1 is released for general update and is available via ADAP-KOOL® support site.
Stock units will not be recalled or updated.
Alsmart® controllers: New AS-CX06 Mid SSR, AS-CX06 Mid+ SSR, and AS-XP10 released
New variants have been added to the Alsmart® controller portfolio, including AS-CX06 Mid SSR, AS-CX06 Mid+ SSR, and AS-XP10. These additions extend the platform with updated functionality and increased I/O capabilities. The new models support a broader range of application requirements.
Key features
AS-CX06 Mid (+) SSR:
- Certified for CE, UL (Recogn.), RCM, UA, EAC
- Programmable with the Alsmart Design 1.10.0008
- Same numbers of I/Os (input and output) as AS-CX06 Pro+/Pro/Mid+/Mid/Lite
- The variance is equipped with one SSR in DO 5 position
AS-XP10:
- Cerfitied for CE and UL (Recogn.)
- Expanded I/O capabilities (input and output) compared to AS-XP05(+) (from 17 to 30)
Affected products
- Alsmart Controller AS-CX06 Mid SSR 080G6040
- Alsmart Controller AS-CX06 Mid+ SSR 080G6038
- Alsmart Controller AS-XP10 080G6010
Availability
The new AS-CX06 Mid SSR, AS-CX06 Mid+ SSR available on stock starting from WK23, AS-XP10 available in stock. The Alsmart Design version 1.10.0008 can be downloaded from Danfoss Partner Portal or from Danfoss Alsmart Community.
Technical specifications
Additional information
Data sheets are also available in other languages.
Download Alsmart Design v. 1.10.0008 from:
- A dedicated Alsmart section of the Danfoss Partner Portal
- Danfoss Alsmart Community.
Access guidance
- Follow the instructions in Alsmart Partner Portal - Quick setup guide and the registration link to request access to the Alsmart Community Join Alsmart Community.
EKC 202x and AK-CC 2xx controllers: Phase-out initiated
The phase-out process for EKC 202x and AK-CC 2xx controllers and related accessories has been initiated.
This change follows the introduction of the new AK-CC25 platform. Customers are advised to plan the transition to the replacement products within the defined timeline.
Timeline
Customers will be able to place orders for the affected products until December 2026, with the possibility of receiving deliveries until June 2027.
Please note, however, that the EKA179 LON module will have its last-time-buy deadline in August 2026.
We encourage you to prepare your transition to the new AK-CC 25 Pro & Pro BT controllers.
Affected products
Replacement guidance
All the controllers listed above can be replaced by the new AK-CC25 Pro (BT) with the limitation of support for LON communication. As LON communication has been declared obsolete by its technology provider, Danfoss will no longer integrate service support for this in our new products. For service replacements (spare parts),
a limited number of AK-CC 210 controllers and accompanying EKA 179A LON option modules have been secured and will be made available for service replacement only.