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Danfoss Scroll Compressor Family: The Quiet Power of Industrial Refrigeration
Danfoss is a globally referenced brand that has brought more than a century of engineering experience in the refrigeration and air conditioning sector to scroll compressor technology. At Yedepa.com, we are proud to offer our customers the wide product range of Danfoss scroll compressors under one roof. In this guide we cover in detail the models ranging from the DSH series to the SH, SY and SZ series; their technical specifications, capacity ranges and which model should be preferred for which application.
Because scroll compressors contain fewer moving parts than classic reciprocating compressors, they run much more quietly, last longer and have markedly higher energy efficiency. Danfoss takes this technology to a higher level while differentiating its models with patented solutions such as IDV (Intermediate Discharge Valve) and advanced lubrication systems. The technical team at Yedepa.com supports technicians in selecting the right Danfoss model for each refrigerant and capacity requirement.
Danfoss DSH Series: High-Efficiency R410A Solutions
The DSH series is Danfoss's scroll compressor family operating with R410A refrigerant, designed for medium and large capacity commercial air conditioning applications. This series is preferred especially in chillers, air-cooled water chillers and heat pump systems.
Danfoss DSH381-4 Scroll Compressor
One of the most powerful members of the DSH series, the DSH381-4 is the first choice for medium-to-large commercial refrigeration projects with a cooling capacity of 30,370 Watt (103,651 BTU/h). Operating with R410A refrigerant, the model runs on a 3-phase supply and, thanks to its modulation capability, delivers stable performance in installations with variable loads. You can find this model on Yedepa.com at a price of 3,318 USD; for stock and delivery time, we recommend contacting our technical service before ordering.
Danfoss DSH295B4APC Scroll Compressor
With 25 HP power and a capacity of 246,500 BTU/h, the DSH295B4APC model is known by the manufacturer code 120H1370. In R410A systems it stands out with IDV technology, which provides stable cooling even at high outdoor temperatures. Frequently preferred in supermarket cold rooms, hotel air conditioning systems and large office blocks, this model is listed on Yedepa.com at a price of 2,787 USD.
Danfoss DSH240-4 Scroll Compressor
With a capacity of 103,662 BTU/h, the DSH240-4 is an R410A-compatible medium-capacity scroll compressor operating on a 380-415 Volt 3-phase supply. Thanks to its low vibration level and quiet operating characteristics, it stands out in noise-sensitive applications. Preferred in hospital air conditioning, recording studios and air conditioning projects in school buildings, this model can be obtained from Yedepa.com at a price of 2,477 USD.
Danfoss SH Series: The Established Models of Performance Scroll
The SH series is Danfoss's high-efficiency family with a wide operating envelope, positioned as Performance Scroll. Operating with R410A, SH models deliver stable efficiency both at high outdoor temperatures and under low load conditions.
Danfoss SH 300 Scroll Compressor
In the 25 HP power class, the SH 300 is the backbone of large-capacity air conditioning applications with a cooling capacity of 75,186 Watt. The 3-phase model is R410A compatible and delivers ideal performance for heat recovery in heat pump applications. Offered for sale on Yedepa.com at a price of 2,923 USD, this model is frequently encountered in the air conditioning systems of shopping malls and production facilities.
Danfoss SH 295 Scroll Compressor
In the 20 HP power class, the SH 295 is preferred for projects requiring a high cooling load with a capacity of 302,080 BTU. Thanks to its advanced lubrication system, this R410A-compatible model provides long-lasting operation. Its current price on Yedepa.com is 2,702 USD, and it stands out especially in 24/7 continuously operating applications such as data center air conditioning and industrial process cooling.
Danfoss SH 240 Scroll Compressor
With 20 HP power and a capacity of 204,000 BTU, the SH 240 is an R410A-compatible essential for medium-to-large commercial air conditioning applications. With a slightly smaller capacity than the SH 295, this model is an ideal choice for more compact projects or as a spare compressor. Offered on Yedepa.com at a price of 2,477 USD, the SH 240 is frequently encountered in hotel and restaurant air conditioning.
Danfoss SY Series: High-Density Commercial Refrigeration
The SY series is a scroll family developed by Danfoss for the commercial air conditioning market, delivering reliable performance even under high-density conditions. With its R407C and R410A compatible models, it can also be preferred for converting old installations.
Danfoss SY300A4PBI Scroll Compressor
With a capacity of 248,356 BTU, the SY300A4PBI is an efficient choice for large-scale commercial refrigeration applications. The PBI suffix stands for Pre-Brazed Inlet and is a technical feature that makes installation easier. Offered on Yedepa.com at a price of 2,767 USD, this model is preferred in cold storage applications and large supermarket refrigeration packs.
Danfoss SY240A4PBI Scroll Compressor
With a capacity of 201,791 BTU, the SY240A4PBI represents the upper-middle segment of the SY series. Thanks to its PBI connection design and construction resistant to high ambient temperatures, it can also be used reliably in cities in Turkey's hot climate zone. Its current price on Yedepa.com is 2,472 USD.
Danfoss SZ Series: Classic Refrigeration Solutions with R407C
The SZ series is Danfoss's classic scroll family for systems using R407C refrigerant. When a compressor replacement is needed in your existing R407C installations, it offers a compatible choice.
Danfoss SZ 175-4RI Scroll Compressor
In the 14 3/5 HP power class, the SZ 175-4RI is R407C compatible and is the first choice of technicians looking for spare parts, especially when converting old installations. It is offered for sale on Yedepa.com at a price of 1,762 USD.
Danfoss SZ 160-4RAI Scroll Compressor
With a capacity of 131,709 BTU, the SZ 160-4RAI is the upper-middle capacity model of the SZ series. It offers drop-in replacement in existing R407C installations. Its current price on Yedepa.com is 1,762 USD.
Which Danfoss Scroll Model Should Be Preferred for Which Application?
Choosing the right model depends on many parameters such as cooling capacity, refrigerant, operating envelope, noise requirements and the electrical supply. The recommendations below are for general guidance; for a detailed selection we recommend consulting the Yedepa.com technical team:
- Large commercial air conditioning (over 200,000 BTU): the DSH381-4, SH 300 or SH 295 models stand out.
- Medium-scale commercial refrigeration (100,000-200,000 BTU): the DSH295B4APC, SH 240, DSH240-4 or SY240A4PBI are suitable choices.
- Renewal of old R407C installations: the SZ 175-4RI and SZ 160-4RAI models are the ideal solution.
- Cold storage and supermarkets: SY series models with PBI connections offer fast installation.
- Heat pump applications: the SH and DSH series stand out with their modulating design.
Common Advantages of Danfoss Scroll Compressors
All Danfoss scroll models share certain common values, and this is the most important factor that makes the brand unrivaled in the sector:
- Quiet operation: Noise reduction of up to 50% compared with reciprocating compressors
- Low vibration: Less wear, longer life
- High COP values: Significant savings on the energy bill
- Wide operating envelope: From −20°C evaporating temperature to +65°C condensing
- Spare parts availability: Fast supply across Turkey through authorized distributors such as Yedepa.com
Installation and Commissioning Recommendations
Some important points to note when installing a Danfoss scroll compressor are as follows: evacuation should be carried out down to 500 microns, the oil level must be checked, the phase sequence must be verified (with the wrong phase sequence a scroll compressor runs in reverse, which can destroy the compressor within minutes) and a suction accumulator must be used against liquid slugging. At Yedepa.com we guide our customers through the commissioning process via our technical support line; if necessary, we also help by calculating application-specific suction and discharge pipe diameters.
Steps such as pressure testing the system with nitrogen before commissioning, pulling a vacuum for at least eight hours after the leak check, and charging the refrigerant in the liquid phase (critical especially for near-zeotropic blends such as R410A) must not be overlooked. Keeping the crankcase heater energized for at least 12 hours before the first start and waiting for the oil to separate from the refrigerant prevents liquid slugging at the first start. All of these practices are documented in Danfoss technical catalogs and are shared free of charge with Yedepa.com customers.
Energy Efficiency and Annual Operating Cost
The strongest point of Danfoss scroll compressors is the high COP (Coefficient of Performance) values they offer. While COP can reach 4.0 and above in DSH series models, the SH series also performs in the 3.5-3.9 range depending on the application conditions. These values mean annual savings of between 20% and 35% in operating costs compared with older-generation reciprocating compressors. At Yedepa.com we calculate the return on investment (ROI) period for our customers free of charge, and we offer a comparative analysis based on the measured consumption values of the compressor in your existing system.
Spare Parts and Service Support
Although Danfoss scroll compressors are long-lasting, periodic maintenance items such as oil changes, contactor replacement and pressure switch calibration come up over the years. Yedepa.com stocks original spare parts for all Danfoss series; you can obtain refrigeration oil (Danfoss 160PZ POE), contactors, thermal protection relays and anti-vibration mounts from a single source. In addition, our authorized service network across Turkey specializes in on-site diagnosis of faulty compressors and, when necessary, on-site replacement.
Frequently Asked Questions (FAQ)
What is the difference between the Danfoss DSH and SH series?
The DSH series is a newer-generation design and includes IDV (Intermediate Discharge Valve) technology; this provides high efficiency even at high outdoor temperatures. The SH series, on the other hand, represents the classic Performance Scroll family and is preferred in a wide range of applications.
Can I switch between R410A and R407C refrigerants?
No, the compressor design is specific to the refrigerant used. You cannot run a compressor designed for R410A on R407C, or vice versa. If you do not know the refrigerant in your existing installation, ask the Yedepa.com technical team for support.
What does the PBI suffix in the SY series mean?
PBI stands for Pre-Brazed Inlet; that is, a pre-brazed connection has been made to the compressor's inlet line. This shortens installation time on site and provides a cleaner brazed connection.
What is the warranty period of Danfoss scroll compressors?
The standard Danfoss warranty is 12 months; however, with authorized installation and a correct commissioning certificate this period can be extended to 24 months. For products purchased through Yedepa.com, warranty processes run quickly and smoothly.
What does an incorrect phase sequence do?
Scroll compressors are designed to run in one direction only. With the wrong phase sequence the compressor rotates in reverse, does not cool, and is destroyed within minutes because the oil pump does not work. A phase control relay must always be used.
How often should the refrigeration oil be changed?
Under normal conditions no oil change is needed in Danfoss scroll compressors; however, if the compressor has been idle for a long time, liquid slugging has occurred, or in the event of fire/short circuit, an oil acidity test should be carried out and a decision on changing it made. Original Danfoss 160PZ POE oil is in stock on Yedepa.com.
What is the main difference between a scroll compressor and a screw compressor?
Scroll compressors generally offer more compact and quieter solutions in the 2 HP to 40 HP range; screw compressors are preferred for large industrial applications above 40 HP. The technical team at Yedepa.com provides support in recommending the right technology according to the capacity of your project.
What is the replacement life of Danfoss DSH and SH compressors?
Under correct installation and periodic maintenance conditions, the average service life of Danfoss scroll compressors is between 80,000 and 120,000 hours. This corresponds to a service life of approximately 18-25 years in a system running 12 hours a day.
What is the delivery time of compressors purchased from Yedepa.com?
For our models in stock, shipment preparation is carried out on the same business day and they are delivered across Turkey through our logistics partners. For large-capacity models not in stock, the delivery time is clearly communicated to the customer at the time of ordering.
Conclusion: Yedepa.com for the Right Danfoss Model
The Danfoss scroll compressor family covers a wide range of applications, from small commercial refrigeration solutions to large industrial air conditioning projects. Each of the DSH, SH, SY and SZ series is designed to meet the requirements of a specific application segment. Choosing the right model makes a decisive difference to the energy bill, compressor life and system reliability. At Yedepa.com we continue to serve technicians and service companies in the sector with original Danfoss products, fast supply, technical support and the assurance of warranted sales. Do not hesitate to contact us for detailed information, stock status or alternative recommendations on any of the models above.
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