I. Series Overview
The DSH series is Danfoss's flagship line of hermetic scroll compressors optimized for R410A and low-GWP refrigerants. It represents Danfoss's top-tier platform for commercial air conditioning and heat pump applications. Featuring Intermediate Discharge Valve (IDV) technology and axial/radial compliance scroll design, this series achieves high seasonal energy efficiency ratios (IEER/IPLV) and exceptional reliability across a wide operating range.
The DSH series is compatible with three refrigerants: R410A, R454B, and R452B, supporting single-unit, tandem (dual-unit parallel), and trio (triple-unit parallel) configurations. Each large compressor comes standard with oil balance connections and an oil sight glass, enabling single, tandem, or trio parallel setups at no extra cost. Single units cover 7.5 to 60 tons of refrigeration (TR), and single-circuit parallel configurations can expand capacity to over 120 TR.
| Feature Dimension | Description |
| Brand | Danfoss |
| Technology Type | Hermetic Compliant Scroll, Fixed Speed |
| Power Range | 7.5 HP – 60 HP |
| Displacement Range | 88.4 – 553 cm³/rev |
| Refrigerants | R410A / R454B / R452B |
| Power Supply | 3φ, 380-415V/50Hz, 460V/60Hz |
| Application Conditions | Air Conditioning & Heat Pumps (AHRI 7.2/54.4℃) |
| Core Positioning | Flagship platform for commercial AC & heat pumps, multi-refrigerant compatible |
Model Grouping Logic
| Group | Models | Displacement (cm³/rev) | Nominal TR | Core Positioning |
| Small Group | DSH090, DSH105, DSH120 | 88.4 – 116.9 | 7.5 – 10 | Light commercial AC workhorse, compact & efficient |
| Medium Group | DSH140, DSH161, DSH184 | 133.0 – 170.3 | 12 – 15 | Commercial AC backbone, high IPLV |
| Large Group | DSH240, DSH295, DSH381 | 227.6 – 345.0 | 20 – 30 | Core power for large chiller units |
| Extra-Large Group | DSH485, DSH600 | 442.6 – 553 | 40 – 60 | Industrial-grade flagship, maximum cooling output |
Small Group — DSH090 / DSH105 / DSH120 Scroll Compressor Product Manual
I. Group Positioning
The Small Group is a compact scroll compressor product line within the DSH series, designed for 7.5–10 TR light commercial air conditioning applications, with a displacement range of 88.4–116.9 cm³/rev. This group is characterized by its compact structure, fine displacement stepping, and multi-refrigerant compatibility, making it an ideal power choice for rooftop units, packaged air conditioners, small chillers, and heat pump systems.
II. Full Series Parameter Comparison Table
| No. | Model | Nominal TR (60Hz) | Displacement (cm³/rev) | Discharge Vol. 50Hz (m³/h) | Discharge Vol. 60Hz (m³/h) | Cooling Capacity 50Hz (W) | COP 50Hz | Oil Charge (L) | Net Weight (kg) |
| 1 | DSH090 | 7.5 | 88.4 | 15.4 | 18.6 | 20,050 | 3.06 | 3.0 | 58 |
| 2 | DSH105 | 9.0 | 103.5 | 18.0 | 21.8 | 23,580 | 3.08 | 3.3 | 64 |
| 3 | DSH120 | 10.0 | 116.9 | 20.3 | 24.6 | 26,790 | 3.11 | 3.3 | 64 |
III. Detailed Analysis
Feature: The DSH090/105/120 adopts Danfoss's hermetic compliant scroll structure, equipped with an Intermediate Discharge Valve (IDV). The IDV automatically opens under part-load conditions to prevent over-compression of refrigerant while maintaining cooling capacity unaffected. The compressor is equipped with an Internal Non-Return Valve (INRV) to effectively prevent excessive backflow from the high-pressure side. A patented motor shroud optimizes motor cooling and improves liquid slugging resistance. A heat shield reduces heat transfer between discharge and suction gases, thereby lowering noise levels. The entire series supports R410A, R454B, and R452B, factory-charged with POE ester oil (160SZ). Connection type is brazed, with a 7/8" discharge port and a maximum high-side working pressure of 48.7 bar.
Advantage: The core advantage of this group lies in the part-load high energy efficiency brought by IDV technology and its fine displacement stepping. IDV can save up to 9% in energy consumption, improving system energy efficiency (IEER/IPLV) by up to 9%. DSH090 has a displacement of 88.4 cm³/rev, 50Hz cooling capacity of 20,050 W, and COP of 3.06; DSH105 has a displacement of 103.5 cm³/rev, cooling capacity of 23,580 W, and COP of 3.08; DSH120 has a displacement of 116.9 cm³/rev, cooling capacity of 26,790 W, and COP of 3.11. The cooling capacities of the three models increase progressively from 20 kW to 26.8 kW, forming a precise power coverage.
Benefit: For rooftop unit and packaged AC system manufacturers, IDV technology enables the system to maintain high energy efficiency during most part-load operating hours throughout the year, significantly reducing end-users' operating electricity costs. DSH090/105/120 maintains a high degree of compatibility with existing Danfoss scroll compressors, minimizing compressor replacement costs and system redesign workload.
Medium Group — DSH140 / DSH161 / DSH184 Scroll Compressor Product Manual
I. Group Positioning
The Medium Group is the mainstay scroll compressor product line within the DSH series, targeting 12–15 TR commercial air conditioning and heat pump applications, with a displacement range of 133.0–170.3 cm³/rev. This group is characterized by its fine displacement stepping, tandem/trio parallel expansion capability, and high IPLV, making it the core power choice for medium-sized commercial chillers, VRF systems, and fresh air handling units.
II. Full Series Parameter Comparison Table
| No. | Model | Nominal TR (60Hz) | Displacement (cm³/rev) | Discharge Vol. 50Hz (m³/h) | Discharge Vol. 60Hz (m³/h) | Cooling Capacity 50Hz (W) | COP 50Hz | Oil Charge (L) | Net Weight (kg) |
| 1 | DSH140 | 12.0 | 133.0 | 23.1 | 27.9 | 30,370 | 3.13 | 3.3 | 67 |
| 2 | DSH161 | 13.0 | 151.7 | 26.4 | 31.9 | 34,890 | 3.16 | 3.3 | 69 |
| 3 | DSH184 | 15.0 | 170.3 | 29.6 | 35.8 | 39,040 | 3.16 | 3.6 | 71.5 |
DSH140 and DSH161 use a 1 3/4" Rotolock oil balance connection; DSH184 uses the same interface specification, supporting parallel configurations.
III. Detailed Analysis
Feature: The Medium Group adopts the same hermetic compliant scroll structure and IDV technology as the Small Group, and comes standard with an Internal Non-Return Valve (INRV). DSH140, DSH161, and DSH184 are all equipped with oil balance connections and oil sight glasses, enabling tandem (dual-unit parallel) configurations at no extra cost. The entire series supports R410A, R454B, and R452B, factory-charged with POE ester oil, with an oil charge of 3.3–3.6 L. Electrical connection uses 4.8 mm screws, with an IP54 protection rating (with cable gland).
Advantage: The core advantage of this group lies in its flexible tandem expansion capability and high energy efficiency. Both DSH161 and DSH184 achieve a COP of 3.16, delivering outstanding efficiency in the 12–15 TR scroll compressor class. Parallel units feature small torque variation, high balance, low vibration, and smooth operation, achieving high efficiency within their applicable cooling capacity range. Taking DSH184 as an example, its 50Hz cooling capacity is 39,040 W; two units in parallel can deliver over 78 kW, meeting the demands of larger-scale systems. Lead-free polymer bearings improve operation under poor lubrication conditions, further enhancing reliability.
Benefit: For chiller and large AC system manufacturers, parallel configurations allow a single platform to flexibly cover a cooling capacity range from 12 TR to 30 TR, greatly simplifying product line management and inventory costs. For contractors, parallel units provide a higher seasonal energy efficiency ratio, meeting load demands with fewer compressors running during part-load periods, significantly reducing operating energy consumption. For end-users, the redundant design of parallel systems ensures that the system can still operate at reduced capacity in the event of a single compressor failure, guaranteeing continuous cooling for critical applications.
Large Group — DSH240 / DSH295 / DSH381 Scroll Compressor Product Manual
I. Group Positioning
The Large Group is a scroll compressor product line within the DSH series, designed for 20–30 TR large commercial air conditioning and chiller applications, with a displacement range of 227.6–345.0 cm³/rev. This group is characterized by its ultra-large displacement, trio (triple-unit) parallel expansion capability, and industrial-grade reliability, making it the core power choice for large air-cooled/water-cooled chillers, district cooling stations, and industrial cooling systems.
II. Full Series Parameter Comparison Table
| No. | Model | Nominal TR (60Hz) | Displacement (cm³/rev) | Discharge Vol. 50Hz (m³/h) | Discharge Vol. 60Hz (m³/h) | Cooling Capacity 50Hz (W) | COP 50Hz | Oil Charge (L) | Net Weight (kg) |
| 1 | DSH240 | 20.0 | 227.6 | 39.6 | 47.8 | 52,730 | 3.09 | 6.1 | 114 |
| 2 | DSH295 | 25.0 | 276.2 | 48.1 | 58.0 | 64,520 | 3.17 | 6.1 | 117 |
| 3 | DSH381 | 30.0 | 345.0 | 60.0 | — | 81,490 | 3.11 | — | — |
DSH240 and DSH295 use a 2 1/4" Rotolock oil balance connection, supporting trio parallel configurations.
III. Detailed Analysis
Feature: The Large Group adopts a hermetic compliant scroll structure, equipped with an electronic protection module that provides phase sequence and phase loss protection at startup. DSH240 and DSH295 are equipped with an Internal Non-Return Valve (INRV). Oil balance connections and oil sight glasses are standard, enabling immediate trio (triple-unit parallel) configuration at no extra cost. An organ pipe design optimizes oil circulation management in parallel configurations. The entire series supports R410A, R454B, and R452B, factory-charged with POE ester oil, with an oil charge of 6.1 L, and net weight of 114–117 kg. The COP of DSH295 reaches 3.17, the highest in this group.
Advantage: The core advantage of this group lies in its ultra-large displacement and trio parallel expansion capability. DSH295 has a displacement of 276.2 cm³/rev and a 50Hz cooling capacity of 64,520 W, meeting the cooling demand of 25 TR systems as a single unit. DSH381 has a displacement of 345.0 cm³/rev and a cooling capacity of 81,490 W. Trio parallel configurations expand single-circuit capacity to over 90 TR. The large oil charge (6.1 L) ensures lubrication reliability during prolonged continuous operation. DSH295's COP of 3.17 leads in energy efficiency among large-capacity scroll compressors.
Benefit: For large chiller manufacturers, DSH240/DSH295/DSH381's complete 20–30 TR power coverage precisely matches the cooling demands of large commercial AC systems. Trio parallel configurations expand single-circuit capacity to over 90 TR, meeting the needs of large commercial complexes and district cooling stations. For contractors, the electronic protection module reduces failure risks caused by power supply issues. For end-users, the large oil charge design extends oil change intervals and reduces maintenance costs.
Extra-Large Group — DSH485 / DSH600 Scroll Compressor Product Manual
I. Group Positioning
The Extra-Large Group is the flagship scroll compressor product line within the DSH series, designed for 40–60 TR ultra-large cooling capacity applications, with a displacement range of 442.6–553 cm³/rev. This group is characterized by maximum single-unit cooling output, trio parallel expansion capability, and industrial-grade reliability, representing the ultimate power solution for extra-large air-cooled/water-cooled chillers, district cooling stations, and industrial cooling systems.
II. Full Series Parameter Comparison Table
| No. | Model | Nominal TR | Displacement (cm³/rev) | Discharge Vol. 50Hz (m³/h) | Cooling Capacity (-10/45℃, W) | Input Power (kW) | Max PS High Side | Motor Protection |
| 1 | DSH485 | 40 | 442.6 | 77.0 | 65,510 | 28.13 | 48.7 bar | 24V Electronic Protection Module |
| 2 | DSH600 | 60 | 553 | 96.2 | 80,250 | 35.63 | 48.7 bar | 24V Electronic Protection Module |
DSH485 cooling capacity 65,510 W, input power 28.13 kW; DSH600 cooling capacity 80,250 W, input power 35.63 kW (R410A conditions, evaporation temperature -10℃, condensation temperature 45℃).
III. Detailed Analysis
Feature: The Extra-Large Group adopts a hermetic compliant scroll structure and represents the two largest displacement models in the DSH series. The compressors are equipped with a 24V electronic protection module providing phase sequence and phase loss protection. An Internal Non-Return Valve (INRV) prevents backflow from the high-pressure side. Compatible with three low-GWP refrigerants: R410A, R454B, and R452B. Oil balance connections and oil sight glasses are standard, supporting trio (triple-unit parallel) configurations, with single-circuit capacity expandable to over 120 TR. A heat shield reduces heat transfer between discharge and suction gases, and a patented motor shroud optimizes motor cooling and improves liquid slugging resistance.
Advantage: The core advantage of this group lies in its maximum single-unit cooling output. DSH600 has a displacement of 553 cm³/rev, 50Hz discharge volume of 96.2 m³/h, and a cooling capacity of 80,250 W; DSH485 has a displacement of 442.6 cm³/rev and a cooling capacity of 65,510 W. Both models can achieve larger system capacities through trio parallel configurations, with single-circuit capacity reaching over 120 TR. The maximum high-side working pressure of 48.7 bar ensures a safety margin in R410A high-pressure systems. The 24V electronic protection module provides precise motor protection and fault diagnosis capabilities.
Benefit: For large chiller and district cooling system manufacturers, DSH485/DSH600's single-unit cooling capacity of 65.5–80.3 kW significantly reduces the number of compressors required, lowering system complexity and installation costs. Trio parallel configurations bring single-circuit capacity to over 120 TR, meeting the extreme demands of large commercial complexes and industrial cooling. For contractors, the 24V electronic protection module and phase sequence protection reduce failure risks caused by power supply issues. For end-users, R454B/R452B compatibility ensures systems can meet stricter future environmental regulations, extending equipment service life.
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Medium Group — DSH140 / DSH161 / DSH184 Scroll Compressor Product Manual
