Reznor 84853 Burner Orifice which is an intentional design

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

and Robertshaw 41-405 models

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

Optimized Combustion: Helps maintain proper gas flow

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

Reznor 84853 Burner Orifice which is an intentional designFor 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