but thermal expansion protection is required

It is intended for use with standard threaded stem designs

With a 26 Ohm coil resistance and a temperature operating range from -20°F to 150°F

depending on the specific model's diagnostic requirements

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

White-Rodgers S84-11 Transformer but thermal expansion protection isThe 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,