Using this on a 120V circuit will result in insufficient secondary voltage and failure of the control system

using genuine OEM HVAC parts like the 621098R ensures the footprint and mounting holes align perfectly

or the furnace cycling through three failed start attempts before lockout

It is frequently used as a cross-reference for Robertshaw and other OEM cold controls in commercial beverage and food service applications

providing a secure friction fit without the need for additional clamps under standard operating pressures

Reznor 46171 Shutter 30067439-890 Using this on a 120VAs a seasoned technician, you understand that achieving the precise stoichiometric ratio is critical for the long term reliability of Reznor XL125 and XL140 unit heaters. This replacement Reznor 46171 Burner Air Shutter is the exact OEM component required to calibrate primary air intake, ensuring a clean, stable flame and preventing the soot accumulation that can degrade heat exchangers. Fabricated from high durability aluminized steel, this die