Trane TRR2928 Transformer 340155-7026 For systems with extreme air

For systems with extreme air venting requirements

this specific 105 model is optimized for the ML6420/6425 and ML7420/7425 footprint

this instrument provides clear visibility for technicians performing routine system calibrations or troubleshooting pneumatic control systems

If the vacuum is present but the SPST switch remains open

making it a standard requirement for maintaining ASME compliance in residential and light commercial boiler loops

Trane TRR2928 Transformer 340155-7026 For systems with extreme airIntegrate the Trane TRR2928 Transformer into your service routine when you need a high reliability 24VAC step down transformer for residential or light commercial systems. Engineered for precision, this 120V to 24V transformer provides a stable low voltage supply essential for the seamless operation of relays, contactors, and advanced control modules. As an OEM Trane replacement part, it ensures exact fitment and electrical performance, eliminating