Danfoss MTZ50-4VI Compressor

The Danfoss MTZ50-4VI is a specialized hermetic reciprocating compressor engineered for medium and high-temperature refrigeration applications. Operating on a 460V 3-phase power supply, this 4.5 HP Maneurop MTZ series unit is factory-charged with 175PZ polyol ester oil (POE), making it compatible with a broad range of HFC, HFO, and HCFC refrigerants including R404A, R407C, R134a, R407A, R448A, and R513A. Its robust construction features a large internal free volume that effectively mitigates the risk of liquid hammering, while the 100% suction gas-cooled motor ensures thermal stability during high-demand cycles. Designed with rotolock connections (1-3/4" suction, 1-1/4" discharge), this commercial HVAC compressor facilitates rapid installation and field serviceability. Whether you are performing a replacement compressor install or building a new rack system, the MTZ50HK4EVE provides the high torque and volumetric efficiency required for reliable 24/7 operation in demanding environments.

Key Benefits

• Multi-Refrigerant Compatibility: Optimized for use with a wide array of modern refrigerants, allowing for flexible inventory management and future-proofing against shifting regulations.
• Enhanced Liquid Handling: The large internal volume and circular valve design provide superior protection against liquid refrigerant migration and slugging.
• Internal Motor Protection: Integrated overload protection safeguards the 3500 RPM motor from electrical fluctuations and overheating.
• Standardized Fit: Rotolock suction and discharge ports, along with a 3/8" NPT oil equalization connection, ensure seamless integration into existing Maneurop system layouts.

Common Questions

What is the primary difference between the MT and MTZ series?
The MT series is typically pre-charged with mineral oil for R22 applications, whereas the MTZ series is charged with 175PZ POE oil to support HFC and HFO refrigerants. Using the wrong oil type in a system can lead to lubrication failure and mechanical breakdown.

Can the MTZ50-4VI be used for low-temperature applications?
No, this specific model is optimized for medium and high evaporating temperatures. Attempting to run this unit in low-temperature conditions may lead to insufficient motor cooling and premature failure.

What components are included with the compressor?
Typical shipments include the compressor with an initial oil charge, a mounting kit (grommets and bolts), and rotolock nuts with solder sleeves for suction and discharge connections.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.