When performing a Reznor XL burner assembly repair or a field gas conversion—particularly to propane—the burner air shutter adjustment is the primary manual control point for alleviating yellow-tipping or lifting-flame issues

Integrated Dual-Function: Combines the hot surface ignitor and flame sensor into one HSI/flame sensor assembly for faster diagnostic and installation times

By eliminating common failure points found in older metal-cased units

and Alco pressure switches

Built on a 48 Nema Frame Size

Aprilaire 6203 Panel 320788-703 When performing a Reznor XLThe Aprilaire 6203 Panel is a professional grade 3 zone HVAC controller designed to provide precise climate management for residential and light commercial applications. This versatile zone control system is compatible with multistage heat pumps and conventional forced air systems, supporting up to 3 stages of heating and 2 stages of cooling. Engineered for efficiency, the Aprilaire 6203 features integrated damper control logic, ensuring optimal