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Danfoss SM175-4QAI Compressor

Danfoss SM175-4QAI Compressor

Danfoss

The Danfoss SM175-4QAI Performer Scroll Compressor is a heavy-duty 460V, 3-phase, 60Hz R22 scroll compressor designed for commercial air conditioning and refrigeration-related cooling applications within its approved operating envelope. Rated at approximately 174,300 BTU/hr (14 tons) under specified conditions, this hermetic compressor provides fixed-speed refrigerant compression for compatible HVAC systems.

The Danfoss SM175-4QAI replacement compressor features 1-5/8-inch ODF suction and 1-1/8-inch ODF discharge brazed connections. Its Performer scroll design uses orbiting and fixed scroll elements to compress refrigerant while reducing mechanical vibration. The compressor includes a threaded oil sight glass, oil equalization connection, internal motor thermostat, and factory mineral oil charge.

Designed for compatible R22 commercial HVAC systems, this 14-ton Danfoss scroll compressor supports equipment service and compressor replacement when electrical ratings, refrigerant, capacity, mounting, piping, and application requirements match.

Verify the original compressor model, operating conditions, electrical protection, and system design before installation.

Key Benefits

  • Manufacturer: Danfoss.

  • Part Number: SM175-4QAI.

  • Product Series: Performer SM175.

  • Compressor Type: Hermetic scroll compressor.

  • Nominal Cooling Capacity: Approximately 174,300 BTU/hr.

  • Nominal Capacity: Approximately 14 tons.

  • Rated Voltage: 460V AC at 60Hz.

  • Electrical Phase: Three-phase.

  • Additional Electrical Rating: 380–400V, three-phase, 50Hz.

  • Approved Refrigerants: R22 and R417A-160SZ, according to the referenced Danfoss technical datasheet.

  • Capacity Control: Fixed-speed operation.

  • Suction Connection: 1-5/8-inch ODF brazed.

  • Discharge Connection: 1-1/8-inch ODF brazed.

  • Swept Volume: 14.22 cubic inches per revolution.

  • Displacement: Approximately 1,728 cubic feet per hour at 3,500 RPM.

  • Locked Rotor Amperage: 175A.

  • Maximum Must Trip Current: 35A.

  • Motor Protection: Internal thermostat; external overload protection required.

  • Factory Oil Charge: Approximately 210 oz of 160P mineral oil.

  • Oil Sight Glass: Threaded connection for oil level inspection.

  • Oil Equalization Connection: 3/8-inch ODF.

  • Low-Pressure Gauge Port: Schrader connection.

  • Approximate Dimensions: 12.5-inch diameter × 26.7-inch height.

  • Approximate Net Weight: 220 lbs.

  • Mounting: Mounting hardware and vibration-isolation components included in the documented single-pack configuration.

  • Application: Compatible commercial air conditioning and HVAC cooling systems.

  • Replacement Compatibility: Verify compressor nameplate model SM175S4QC, electrical characteristics, refrigerant, piping, and mounting configuration.

Common Questions

Q: What is the cooling capacity of the Danfoss SM175-4QAI scroll compressor?

A: The Danfoss SM175-4QAI is commonly rated at approximately 174,300 BTU/hr, or 14 tons of nominal cooling capacity. Actual capacity depends on evaporating temperature, condensing temperature, refrigerant, and operating conditions. Consult Danfoss performance data for the specific application.

Q: What voltage and refrigerant does the Danfoss SM175-4QAI require?

A: The compressor is rated for 460V, three-phase, 60Hz electrical service and also has a 380–400V, three-phase, 50Hz rating. It is designed primarily for R22 refrigerant, with R417A-160SZ also identified in the referenced manufacturer datasheet. Confirm refrigerant approval and lubricant requirements before installation.

Q: Can the Danfoss SM175-4QAI replace an existing commercial HVAC scroll compressor?

A: It can be used as a replacement when the manufacturer-approved application matches the system requirements. Verify cooling capacity, voltage, phase, refrigerant, suction and discharge connections, mounting dimensions, motor protection, and operating envelope. Matching nominal tonnage alone does not establish interchangeability.

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.

SM175-4QAI is the cross for 027-01007-000