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The AV-400 is specifically engineered for use with the MK-2690 pneumatic actuator series
enabling advanced configuration of multi-stage heat pumps and furnaces
ensuring consistent heat exchange and airflow across the condenser coils
Rotation is determined by looking at the blower wheel from the hub/motor side
York S1-7660-3591 Limit R-407C The AV-400 is specifically engineeredThe York S1 7660 3591 is a precision calibrated bimetal high limit switch replacement designed for high cycle reliability in residential and light commercial furnaces. This safety critical L150 20F limit control is engineered with a snap acting disc that opens the burner circuit at a 150F operating threshold and automatically closes at a 130F reset point. As a direct fit Johnson Controls HVAC part, this unit serves as the factory authorized
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