The Reznor 1252516 Vertical Pilot Assembly is designed for SC Series gas-fired HVAC heating equipment. It delivers a controlled flow of gas to create a stable pilot flame, which ignites the main burner and ensures proper combustion. Installed vertically for optimal flame positioning, it supports reliable ignition and consistent burner operation. Commonly used in commercial gas unit heaters, this pilot assembly enhances safety, reduces ignition failures, improves heating reliability, and contributes to efficient, dependable system performance with long service life.