Copeland 577-0421-00 Tank-Accumlator

The Copeland 577-0421-00 is an essential suction line accumulator assembly designed to safeguard compressors from liquid slugging and premature failure. Engineered specifically for refrigeration systems and heat pump applications, this tank-accumulator assembly features a robust bi-metal construction that handles high-pressure environments while maintaining system stability. By acting as a temporary reservoir, it effectively traps liquid refrigerant and oil during off-cycles or defrost reversals, preventing refrigerant compressor damage. This model utilizes a precise metering ejector and a U-tube suction connection to ensure controlled oil return to the crankcase, maintaining the critical oil-to-refrigerant ratio. With a 14.79 lb weight and compact 16.1-inch length, it integrates into the suction line to modulate flow and sustain consistent discharge temperatures. For field technicians, the sweat connection type and copper/steel composition provide a reliable, leak-resistant interface compatible with a wide range of Copeland compressors and OEM HVAC equipment.

• Enhanced Compressor Protection: Prevents liquid refrigerant from entering the compressor suction port, eliminating liquid slugging risks.
• Managed Oil Return: Features a calibrated orifice at the bottom of the U-tube to ensure oil is metered back at a safe, consistent rate.
• Durable Bi-Metal Design: Constructed with high-grade steel and copper to withstand the thermal stress of heat pump defrost cycles.
• System Efficiency: Buffers refrigerant flow to assist in maintaining stable pressure levels during variable load operations.

Where should the 577-0421-00 be installed in the system?
This assembly should be located in the suction line, specifically between the evaporator outlet and the compressor inlet, to capture liquid before it reaches the cylinders.

Is this accumulator mandatory for heat pump applications?
Yes, most HVACR applications involving heat pumps or systems with large refrigerant charges require a suction accumulator to prevent damage during cycle reversals.

What is the connection type for this specific model?
The 577-0421-00 features a standard sweat connection (C x C), allowing for a high-integrity, brazed fit-up during field installation.

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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.