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The TRANE BAYORIACHP0057 is a refrigerant metering orifice designed for use in 2-ton R-410A refrigerant systems. This fixed orifice controls refrigerant flow between the high-side and low-side of the refrigerant circuit, regulating the expansion of liquid refrigerant entering the evaporator coil. It serves as the primary metering device in systems that use a fixed-orifice design rather than a thermostatic expansion valve (TXV). Installation is typically performed by a licensed HVAC technician during system servicing or component replacement.
This orifice is matched to a 2-ton system capacity and calibrated for use with R-410A refrigerant. Fixed orifices are commonly found in residential split-system air conditioners and heat pumps. Proper orifice sizing is critical to system efficiency and refrigerant charge balance. Using an orifice sized for a different tonnage will result in improper superheat, reduced EER, and potential compressor damage. This part is appropriate for systems where the manufacturer specifies a fixed-orifice metering device at the indoor coil.
Designed as an OEM-style replacement metering orifice for TRANE 2-ton R-410A split-system air conditioners and heat pumps that use a fixed-orifice refrigerant metering design.
Installation should be performed by a licensed HVAC technician with EPA Section 608 certification for handling R-410A refrigerant. The system must be properly recovered and depressurized before removing or replacing the orifice. Verify the replacement orifice tonnage matches the outdoor unit capacity before installation. After installation, recharge the system to manufacturer specifications and confirm proper superheat and subcooling readings.
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