Precision Safety: Maintains the integrity of the flame rectification circuit

also identified by model number CO-12

It is intended for use with standard threaded stem designs

preventing intermittent ignition failures or pressure switch trip codes that often plague older Nortek furnace parts

White-Rodgers S84-11 Transformer Precision Safety: Maintains the integrityThe White Rodgers S84 11 Transformer is a heavy duty 120V to 24V step down transformer engineered for reliable performance in demanding residential and light commercial HVAC applications. As a Class 2 energy limiting transformer, this 40VA rated model provides a stable secondary output of 24VAC, making it the industry standard for powering gas valves, 24V thermostats, fan controls, and relay centers. Its universal mounting designsupporting plate,