this harness facilitates the precise transmission of 115V and 24V signals between the integrated control board

Key Benefits Factory-Calibrated Performance: Fixed at a 4 mA starting point and 16 mA span for consistent proportional control

it is best practice to verify the condition of your existing thermocouple or thermopile and replace it simultaneously to ensure the entire ignition circuit is refreshed

and 48-frame housing for industrial-grade durability

Proven Durability: CSA listed and manufactured as a Factory Authorized Part for reliable thermal cycling

Reznor 221637 Gasket 321142-301 this harness facilitates the preciseThe Reznor 221637 Gasket set is a critical OEM replacement part designed specifically for sealing the header and heat exchanger interfaces in high efficiency gas fired unit heaters. Engineered for a precise fit, this heater gasket kit prevents combustion gas leakage and maintains the necessary static pressure within the burner cabinet. Technicians typically utilize this set during internal heat exchanger inspections or when replacing a Reznor burner