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It provides a time-delayed sequence for energized heating elements to prevent electrical overloads and ensures the blower motor continues running until the residual heat is cleared from the plenum
The Schneider Electric AM-122 is technically identical to the Barber Colman A-3795 and can be used as a direct 1:1 replacement without any modifications to the existing linkage setup
Its calibrated opening ensures a stable pilot flame
it ensures seamless compatibility with Lennox heating equipment
Unlike mechanical relays
Nordyne 626552R Fan Switch It provides a time-delayed sequenceThis Nordyne 626552R Fan Switch is the direct engineering update for the legacy 626552, designed specifically for high reliability HVAC blower motor control. As an OEM Nordyne part with an F115 20 technical designation, it functions as a normally open (NO) switch that closes upon reaching 115F and maintains a 20F differential. This ensures precise furnace fan limit control, preventing short cycling and optimizing airflow in air handlers and downflow
