Bitzer 4NES-20Y Semi-Hermetic Reciprocating Compressor

🔧 Technical Specifications

• Model: 4NES-20Y-40P
• Cooling Capacity (R404A @ -10°C / 45°C): 28.6 kW
• Power Input: 12.20 kW
• COP (Efficiency): 2.34
• Displacement (50Hz): 56.25 m³/h
• Displacement (60Hz): 67.89 m³/h
• Cylinders / Bore / Stroke: 4 × 70 mm × 42 mm
• Weight: 157 kg
• Max Pressure (LP / HP): 19 / 32 bar
• Suction Line Connection: 42 mm – 1 5/8”
• Discharge Line Connection: 28 mm – 1 1/8”
• Max Power Input: 19.0 kW
• Max Operating Current: 33.2 A
• Starting Current (Rotor Locked): 97.0 A (Y) / 158.0 A (YY)
• Discharge Temperature: 90.3°C
• Sound Pressure Level: 70.3 dB(A) @ -10°C / 45°C

🛢 Oil & Refrigerant Compatibility

• Standard Oil Charge: 2.60 dm³ – BSE32
• Compatible Refrigerants:

• R404A, R507A, R407A/F → BSE32
• R134a >70°C → BSE55
• R22 → B5.2
• R1234yf → BSE32 / BSE55
• R1234ze → BSE55 / BSE85K
• R454C, R455A → BSE32
• R515B → BSE55 / BSE85K

💡 Why Choose the 4NES-20Y

✔️ High-performance solution for commercial freezer & cold room systems

✔️ Bitzer IP66 motor protection & oil management system

✔️ Optional features include oil heater, discharge gas temp sensor, and intelligent capacity control

✔️ Compatible with Bitzer IQ Module for remote monitoring

✔️ Strong and quiet performance with sound rating of only 70.3 dB(A)

📦 Compatible Accessories

• Liquid Receiver: F552T – 54 L, refrigerant charge up to 51.9 kg (R404A)
• IQ Module: CM-RC-02 – Includes Modbus, Bluetooth, and logging

🚚 Shipping & Availability

• ✅ 380–420V / 50Hz operation
• ⚙️ Custom voltage (e.g., 60Hz) available with 3–4 week production
• 🌍 Export-ready packaging and worldwide shipping available