Reznor 84853 Burner Orifice If the switch is open

If the switch is open (no continuity) at room temperature

which is an intentional design choice for high-traffic areas where restricted access is necessary

secure connection in control panels while meeting UL listed standards for safety and reliability in commercial environments

allowing it to handle line voltage fluctuations and inductive spikes better than a standard 370V unit

it provides the exact resistance values and switching points required by the control board to prevent short-cycling and unnecessary auxiliary heat engagement

Reznor 84853 Burner Orifice If the switch is openFor veteran technicians servicing industrial heating systems, the Reznor 84853 Burner Orifice is a critical precision engineered component for maintaining stoichiometric combustion. This #47 brass burner orifice is specifically machined to meet rigid OEM tolerances for Reznor unit heaters and gas fired equipment. Constructed from high grade, corrosion resistant brass, this spud style orifice ensures a stable gas flow rate, which is essential for