Technicians usually identify a burner crossover issue during "lazy" ignition or when specific burners fail to light despite a functional igniter

Is the Reznor 135981 compatible with all Reznor unit heaters

Common issues include a faulty flame sensor (electrode)

The SPDT (Single Pole Double Throw) relay allows the Warrick 26NMC1B0 to simultaneously break the burner circuit and engage an external alarm or status light when a low-water state is detected

Browning BK55H Sheave 320735-701 Technicians usually identify a burnerThe Browning BK55H Sheave is a precision engineered single groove cast iron pulley designed for heavy duty power transmission. With a 5. 25" outside diameter and a 5. 0" datum diameter for B belts (4. 6" for A belts), this sheave provides reliable performance in industrial HVACR systems. It is specifically manufactured for use with H Series split taper bushings, ensuring a secure, concentric fit on the drive shaft that minimizes vibration and extends