Danfoss MT125-4VI Compressor

The Danfoss MT125-4VI is a heavy-duty R22 reciprocating compressor designed for medium and high-evaporating temperature applications. Engineered for robust performance in commercial refrigeration and HVAC systems, this Maneurop MT series unit delivers 124,678 Btu/h at standard rating conditions (45°F SST / 130°F SDT). It features a large internal free volume that provides superior resilience against liquid slugging, making it a reliable choice for demanding environments. This model is identical to MT125HU4DVE and operates on a 400V/3Ph/50Hz or 460V/3Ph/60Hz power supply. The MT125-4VI compressor utilizes mineral oil and is equipped with 1-3/4" Rotolock suction and 1-1/4" Rotolock discharge ports, including ODF sweat sleeves for secure brazing. A 3/8" NPT oil equalization port is integrated for parallel compressor rack configurations. When searching for a Danfoss MT125 replacement, ensure voltage and refrigerant compatibility match existing system parameters for optimal efficiency.

Key Benefits for Contractors

• High Liquid Tolerance: Large internal volume protects against liquid refrigerant entering the suction, reducing mechanical wear.
• Dual Frequency Versatility: The 380-400V/460V motor allows for flexible installation across various electrical standards.
• Simplified Manifolding: Built-in oil equalization port facilitates easy integration into multi-compressor systems.
• Precision Engineering: High-efficiency suction gas cooling around the motor ensures low operating temperatures and longevity.
• Drop-in Compatibility: Standard Rotolock connections allow for fast field replacement without extensive piping modifications.

Common Installation Questions

Is the Danfoss MT125-4VI compatible with POE oil?
This specific model is charged with mineral oil for R22 systems. If you are retrofitting with an HFC refrigerant, you must ensure the oil is compatible with the new refrigerant or use an MTZ series equivalent.

What are the connection sizes for the MT125HU4DVE?
The unit utilizes a 1-3/4" Rotolock suction (1-1/8" ODF sleeve) and a 1-1/4" Rotolock discharge (3/4" ODF sleeve) for standard brazing or threaded connections.

Can this compressor be used in low-temperature applications?
The MT series is optimized for medium and high evaporating temperatures. For low-temp applications, check the specific performance envelope to ensure the suction temperature remains within operating limits.

Item is Non Cancelable / Non Returnable

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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.