000 BTU/ft³ for natural gas—requires precise air-to-fuel ratios to prevent soot buildup or heat exchanger damage

Smith 9006107205 and fits multiple brands including American and State

On most compatible models

will continue to spark and attempt to light the pilot indefinitely as long as there is a call for heat

Resideo ZD20X6TZ Damper 322027-701 000 BTU/ft³ for natural gas—requiresThe Resideo ZD20X6TZ is a professional grade 20x6 zone damper engineered for precise airflow management in multizone forced air systems. This rectangular parallel blade damper features an extruded aluminum frame and blades, ensuring a rigid construction that prevents bowing under high static pressure. Operating on a 24Vac synchronous motor, the unit utilizes a power closed spring return open configuration, making it the industry standard for normally