Danfoss NTZ096A4LR1B Hermetic Reciprocating Compressor (120F0234) | 3.5 HP | 8,070 BTU/h LBP Low Temperature | R404A | 96 cm³ | 400V 3-Phase

The Danfoss Maneurop NTZ096A4LR1B is a hermetic reciprocating compressor (Danfoss code: 120F0234) designed for low temperature (LBP) commercial refrigeration applications such as freezers, blast freezing, low temperature cold rooms and low temperature display cabinets. With its two-cylinder design, 96 cm³ displacement and 3.5 HP power, it delivers 8,070 BTU/h (2,365 W) cooling capacity with R404A at the ASHRAE LBP condition (evaporating -31.7°C / condensing +40.6°C). In addition to R404A and R507A, it also operates with the low-GWP refrigerants R452A, R454C and R455A; it is charged with POE oil.

Low Temperature (LBP) Maneurop NTZ Reciprocating Compressor — 3.5 HP / 8,070 BTU/h

The Maneurop NTZ series is the low temperature sibling of the MTZ (medium temperature) and is designed to operate at evaporating temperatures down to -35°C. The motor is fully suction-gas cooled; it comes with internal thermal motor protection and rotalock suction and discharge connections. The same compressor is listed by Danfoss under code 120F0234 in single packaging and 120F0235 in industrial packaging.

Key Technical Features and Equipment

• Nominal Capacity: 3.5 HP (3.5 horsepower) / 8,070 BTU/h (2,365 W) — R404A, ASHRAE LBP (te -31.7°C / tc +40.6°C), 50 Hz.
• Low Temperature (LBP): Freezer, blast freezing, low temperature cold room and display applications.
• Two-Cylinder Reciprocating Design: 96 cm³ displacement, 16.7 m³/h (50 Hz).
• Refrigerant Compatibility: R404A, R507A, R452A, R454C, R455A.
• Rotalock Connection: Suction 1 3/4 inch, discharge 1 1/4 inch.

Technical Specifications

• Brand / Model: Danfoss Maneurop / NTZ096A4LR1B (NTZ096-4)
• Danfoss Codes: 120F0234 (single packaging) · 120F0235 (industrial packaging), same compressor
• Type: Hermetic reciprocating, 2 cylinders, low temperature (LBP)
• Nominal Power: 3.5 HP (3.5 horsepower)
• Cooling Capacity (R404A, 50 Hz): 8,070 BTU/h (2,365 W) @ te -31.7°C / tc +40.6°C · 10,680 BTU/h (3,130 W) @ te -23.3°C / tc +48.9°C
• Power Input (50 Hz): 1.98 kW · 3.60 A (te -31.7°C / tc +40.6°C)
• Displacement: 96 cm³ · 16.7 m³/h (50 Hz, 2900 rpm) · 20.2 m³/h (60 Hz, 3500 rpm)
• Compatible Refrigerants: R404A, R507A, R452A, R454C, R455A
• Power Supply: 400V / 3-phase / 50 Hz and 460V / 3-phase / 60 Hz
• Current: MCC 10.1 A · LRA (locked rotor) 32 A · maximum operating current 7.1 A · winding resistance 5.03 Ω
• Motor Protection: Internal thermal (internal overload)
• Oil: POE 175PZ, 1.8 L
• Connections: Suction 1 3/4 inch rotalock (7/8 inch tube), discharge 1 1/4 inch rotalock (3/4 inch tube); oil equalisation 3/8 inch flare; low pressure service port (Schrader). Compatible rotalock valves: V07 (suction) / V04 (discharge).
• Dimensions: Height 413 mm, diameter 288 mm
• Weight: Net 35.2 kg (gross 37.7 kg)
• Pressure Limits: High pressure side max. 28.5 bar · low pressure side max. 22.6 bar
• Start Limit: Maximum 12 starts per hour
• Maximum Refrigerant Charge: 5 kg
• Protection Class: IP55 (with cable gland)
• Approvals: CE, UKCA

Technician Tips

• Braze the rotalock connections and tubes under nitrogen to prevent internal oxidation.
• In low temperature applications, select the correct refrigerant (R404A/R507A/R452A/R454C/R455A) and a suitable expansion device.
• POE oil absorbs moisture; evacuate the system thoroughly before commissioning (moisture = acid + winding failure).
• Set the thermostat differential and short-cycle protection so that the limit of 12 starts per hour is not exceeded.
• The stated capacity is at the ASHRAE LBP condition (te -31.7°C / tc +40.6°C); confirm the actual capacity for your own evaporating/condensing temperatures with Danfoss Coolselector.