Reznor 221637 Gasket 320074-702 keeping your lines clear and

keeping your lines clear and preventing back-up

Enhanced Component Longevity: Reduces mechanical and electrical stress on the system by managing the furnace control sequence more effectively

Always verify the flame sensor probe and grounding before replacing the module

the SC30 eliminates signal drift and improves thermal efficiency by maintaining consistent gas flow control through high-pressure conditions up to 5 PSI

By regulating exhaust flow

Reznor 221637 Gasket 320074-702 keeping your lines clear andThe 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