Copeland 910-0352-03 Valve & Coil

When you're dealing with low-evaporating temperature R-22 or retrofit refrigerant systems, managing discharge temperatures is the difference between a reliable rack and a repeat service call. The Copeland 910-0352-03 is a critical Demand Cooling Valve & Coil assembly designed to provide active thermal protection for semi-hermetic Discus compressors. This 120V liquid injection valve works in tandem with the Demand Cooling module to monitor discharge head temperatures via a thermistor sensor. When the module detects temperatures approaching critical limits, it energizes this solenoid coil, metering saturated refrigerant directly into the suction cavity. This process effectively lowers the discharge gas temperature, preventing oil breakdown and carbonization (coking) that leads to premature bearing failure. As a direct OEM replacement part, this valve and coil set ensures your low-temperature refrigeration system maintains its operating envelope, even during high ambient conditions or high return gas temperatures. It is essential for technicians performing compressor maintenance or retrofitting older R-22 systems to R-407A or R-407F environments.

• Thermal Protection: Prevents compressor overheating by injecting liquid refrigerant to keep discharge temperatures below the 225°F safety threshold.
• Oil Integrity: Reduces the risk of oil coking and sludge formation, extending the life of the internal compressor components and lubricant.
• System Reliability: Minimizes nuisance trips and protects the Copeland Discus motor from heat-related stress during high compression ratio operations.
• Precise Metering: High-performance valve technology ensures accurate refrigerant flow to maximize cooling without liquid slugging the compressor.
• 120V Compatibility: Standard electrical specifications for seamless integration with existing Demand Cooling control modules and alarm circuits.

• Which compressors are compatible with the 910-0352-03? This valve and coil assembly is specifically engineered for use with Copeland semi-hermetic Discus compressors, such as the 3DF3A090E series, that utilize a Demand Cooling system.
• When does the Demand Cooling valve activate? The valve is energized whenever the discharge temperature sensor provides a signal to the module indicating that a preset temperature limit has been reached, typically around 292°F at the sensor (approximately 225°F discharge).
• Can this be used with refrigerant retrofits like R-407A? Yes, Demand Cooling is often required when shifting low-temperature systems from R-22 to newer refrigerants to manage the resulting increase in discharge heat.

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.