The Reznor 155981 Ventor Assembly is a critical combustion air blower designed for high-efficiency thermal management in SFT series units

It is commonly found in Trane Voyager and Precedent light commercial units

Mounting hardware is typically part of the compressor assembly or separate kit

When a blower assembly begins to fail or vibration increases

Siemens Building Technology 533-380-24 Temperature Sensor 326010-701 The Reznor 155981 Ventor AssemblyThe Siemens 533 380 24 is a professional grade duct averaging temperature sensor designed for precise climate monitoring in commercial HVAC systems. This unit features a 24 foot flexible probe, making it the standard choice for large air handling units (AHUs) where air stratification often leads to inaccurate readings from single point sensors. Utilizing a 100 Ohm Platinum RTD (Pt100) sensing element, the 533 380 24 provides a reliable 4 20mA output