Reznor 221637 Gasket 320734-701 Always allow the filter to

Always allow the filter to dry completely before reinstalling to prevent microbial growth

potentially damaging the start windings

but the load must be present to complete the circuit for the electronics to function

and Payne furnaces and packaged units

Enhanced System Reliability: Minimizes compressor stress by maintaining the engineered pressure differential across the liquid line

Reznor 221637 Gasket 320734-701 Always allow the filter toThe 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