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ensuring proper furnace venting and preventing hazardous backdrafts within the heat exchanger assembly
as well as the 200 and 201 series
What oil should be used in this compressor
the durable oval casing meets rigorous 10
York S1-7970-3281/A Limit Switch 319825-402 ensuring proper furnace venting andThe York S1 7970 3281 A Limit Switch is a critical safety component designed for precise thermal monitoring in residential and light commercial HVAC systems. This high limit cutout switch features a 145F Open (FOP) and 115F Close (FCLS) configuration, ensuring the furnace heat exchanger remains within safe operating parameters. Acting as a normally closed thermal disc, the S1 7970 3281 A interrupts the burner circuit if airflow is restricted or