The Trane TRR0401 is a core HVAC control circuit transformer designed to step down line voltage for reliable 24V secondary output

the 342970-75101 is the official manufacturer-designated supersession

While it fits standard frame sizes used in these units

How do I wire the end switch on the AG14B02A

Reduced Downtime: The RK 009-RT configuration allows technicians to replace all wear-and-tear parts in a single service call

Trane VAL12000 Expansion Valve 319848-301 The Trane TRR0401 is aThe Trane VAL12000 Expansion Valve is a critical component for maintaining precise superheat control within commercial HVAC systems. This TXV thermostatic expansion valve is engineered to regulate refrigerant flow into the evaporator coil, ensuring optimal heat exchange efficiency across varying load conditions. Featuring 1. 387 OD x 2. 125 OD connections, this valve is designed for high capacity applications that require robust OEM Trane replacement