Resideo ZD28X8TZ Damper 319852-301 ensuring the flame sensor is

ensuring the flame sensor is operating within the 1600-ohm threshold

this unit’s high-leverage valve linkage ensures it

High BTU Rating: Provides 4

The datum diameter or pitch diameter will vary slightly depending on whether you are running A or B belts

Resideo ZD28X8TZ Damper 319852-301 ensuring the flame sensor isThe Resideo ZD28X8TZ is a heavy duty, 28" x 8" parallel blade zone damper engineered for precise airflow management in high static pressure environments. Built with a rugged extruded aluminum frame and reinforced blades, this rectangular damper utilizes a 24Vac synchronous motor to deliver reliable two position control. The power closed spring return open configuration ensures a fail safe normally open state, maintaining critical ventilation during