York S1-1TVMBF1 TXV Kit

The York S1-1TVMBF1 TXV Kit is a critical metered expansion component engineered for high-efficiency R410A split systems. Designed for field installation on York, Coleman, and Luxaire indoor coils (including CF, CM, and CU series) and air handlers like the AP, AE, and AVC, this kit ensures precise refrigerant flow control to maintain target superheat under varying load conditions. It features a 3/4 inch Chatleff connection and an internal check valve, making it fully compatible with both southern-climate cooling-only applications and year-round heat pump systems. By replacing standard orifices with this bolt-on thermostatic expansion valve, contractors can achieve rated SEER/HSPF efficiency and prevent liquid slugging in the suction line, which is vital for long-term compressor reliability.

• Optimized Efficiency: Dynamically adjusts refrigerant flow to maximize evaporator coil surface area usage, ensuring the system reaches its OEM SEER rating.
• Broad Compatibility: Specifically designed for 5-ton R410A thermal expansion valve applications across residential and light commercial equipment.
• Complete Installation Package: Includes the S1-1TVMBF1 valve body, Teflon (PTFE) washer, bulb clamps, and 2.5 feet of thermal insulation to maintain sensing bulb accuracy.
• Hard Start Compatibility: Engineered for use with Johnson Controls unit models, though reciprocating compressor systems may require a separate hard start kit per technical guidelines.

Is this TXV compatible with older R22 systems?
No, this kit is specifically calibrated for R410A refrigerant and its specific pressure-temperature characteristics. Using it with R22 will result in improper superheat and potential compressor failure.

Where should the sensing bulb be mounted for best performance?
For a 3/4 inch suction line, position the bulb at either the 10 o’clock or 2 o’clock position on a horizontal run and wrap it completely with the provided insulation to prevent ambient temperature interference.

Does this require a hard start kit?
While scroll compressors typically do not require one, systems utilizing reciprocating compressors often need a hard start kit when transitioning to a TXV-metered system to assist with startup torque.

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.