R404A Compressor for Commercial Refrigeration Glen Refrigeration
Sanyo, is a leading manufacturer of rotary compressor for air conditioning and commercial refrigeration in the world. Sanyo took the lead in introducing rotary refrigeration compressor to Japanese market, then gradually expanded to the world. More than 30 years, Sanyo designers and engineers carry on that tradition with industry-leading technologies for commercial refrigeration.
Glen Refrigeration has proudly served the commercial refrigeration market with Sanyo rotary refrigeration compressor. We are passionate about helping our customers keep ahead in commercial refrigeration industry with Sanyo refrigeration compressors, horizontal condensing unit, outdoor condensing unit and monoblock refrigeration unit.
Refrigerant FAQ - R404A replacement
There are several viable options which depend on the application, operating conditions, and whether it will be used in a new or existing system.
For existing systems, we recommend R448A, R449A or R452B. The same applies for new installations at medium temperatures, including R134a.
The best options depend on the unit’s size and type.
In centralized systems common in supermarkets and hypermarkets, CO2 should be used. A lot of progress has been made to enhance its efficiency – even in high ambient temperatures. It also complies with Article 13 usage and service ban of the EU F-gas regulations.
In small installations such as glass door merchandisers (GDMs), depending on the application temperature, new systems should preferably use hydrocarbons for high performance, which relate to Article 11 of the EU F-gas regulations.
In mid-size installations such as cold rooms, milk tanks, display cabinets, and blast freezers, there are several options which relate to Article 12 of the EU F-gas regulations. The best choice will depend on the type of application.
For further information, please refer to question 1.
-> Refer to the retrofit comparison
It depends entirely on the application. In low temperature applications, R452A provides a wider operating map without additional system components – such as vapor injection for a simpler design.
R448 and R449A deliver good energy performance and have a lower GWP than R452A.
Each refrigerant complies with Articles 11 (self-contained units), 12 (condensing units), and 13 (centralized systems) usage and service ban of the EU F-gas regulations.
However, it’s important to remember that under Article 11, none of these refrigerants can be used in self-contained units after .
For recommended low and medium temperature refrigerants, refer to question 1.
Due to the thermodynamic properties of R448A and R449A, both have high discharge temperatures, which will limit the operating map of any compressor.
To increase the operating map, vapor or liquid injection are required. However, both are more expensive options and liquid injection is only currently available for scroll compressors, while vapor injection will be available later in .
It’s important to ensure that system oil is compatible for each component and every alternative option.
Danfoss POE oil must be used with any Danfoss commercial compressor, including subsequent future models. When changing oil, it’s also a good opportunity to change the filter dryer. to help ensure system longevity.
-> Retrofit guideline
-> Reciprocating compressors use Danfoss POE oil from 160 to 175 PZ
Scroll compressors no longer use PVE oil and now use POE oil. Refer to the technical note for more information
