Danfoss SM115-4QAI Scroll Compressor

The Danfoss SM115-4QAI Scroll Compressor is a high-performance, fixed-speed displacement solution engineered specifically for R-22 air conditioning applications. This 460V, 3-phase unit delivers a nominal cooling capacity of 115,200 BTU, making it a reliable choice for commercial rooftop units and large-scale split systems. As a veteran-grade HVACR replacement compressor, it features brazed connections and internal thermostat motor protection to ensure operational stability under high-demand cycles. Designed for 60Hz operation at 3500 rpm, this Danfoss SM series motor utilizes 3.8 liters of mineral oil (160P) and is built with the robust scroll technology required to handle maximum operating pressures of up to 30.2 bar on the high side. For technicians performing retrofits or direct swaps, the SM115-4QAI (often referenced as SM115S4QC in after-sale markets) provides the mechanical reliability and exact 253mm diameter footprint needed for seamless field installation.

• High-Efficiency Performance: Specifically optimized for 460V 3-phase HVAC systems to provide consistent 115,200 BTU output with low vibration.
• Advanced Protection: Features an internal thermostat motor protection and IP54 rated terminal box with cable gland for enhanced field reliability.
• OEM Compatibility: A direct displacement for many 10-ton nominal capacity systems, ensuring the R-22 scroll compressor meets original equipment specifications.
• Complete Install Kit: Shipped with mineral oil and a comprehensive mounting kit including grommets, bolts, nuts, sleeves, and washers.

What is the primary application for the Danfoss SM115-4QAI?
This scroll compressor is designed for heavy-duty commercial air conditioning and heat pump systems utilizing R-22 refrigerant. It is commonly found in large-tonnage units requiring 460V power supply.

Can I use POE oil with this model?
The SM115-4QAI is charged with mineral oil (160P). For R-22 systems, mineral oil is the standard lubricant; ensure system cleanliness to avoid oil contamination during the swap.

What is the difference between SM115-4QAI and SM115S4QC?
The SM115-4QAI is the manufacturer code, while the SM115S4QC typically refers to the after-market or service part number. They are mechanically and electrically identical.

Safety Notice:
WARNING: This product contains chemicals known to the State of California to cause cancer and reproductive harm. For more information, visit www.p65warnings.ca.gov.

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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.