Reznor 269853 Conversion Kit 30067439-890 It monitors air velocity to

It monitors air velocity to ensure the blower motor is moving enough air to prevent overheating and core damage before the system ignites

and both part numbers refer to the same Honeywell assembly

featuring a forged brass body and robotically welded joint construction to eliminate common leak paths

Durable Construction: Features a bronze body and a soft-seat design to minimize leakage and extend service intervals

Reznor 269853 Conversion Kit 30067439-890 It monitors air velocity toWhen transitioning a Reznor unit heater from propane to natural gas, the Reznor 269853 conversion kit provides the necessary hardware for a field ready fuel swap. This gas conversion kit is specifically engineered for Reznor UDAP, UDAS, UDBP, and UDBS models in 100 and 125 sizes, ensuring the manifold pressure and thermal output align with factory benchmarks. The 100% genuine Reznor 269853 package includes precisely sized burner orifices and the