The L4064B controls the on and off operation of the heating unit’s fan motor and provides high limit control of the main burner. It is suitable for all types of forced air heating systems. The L4064B’s bimetal sensing element turns fan on and off according to plenum temperature. The L4064B has a manual switch to provide continuous fan operation, mounting adapters for replacing competitive devices, adapters for wiring convenience, and a strain relief bushing for protecting the wiring from damage due to field abuse. Limit contacts are suitable for line voltage, low voltage or millivoltage circuits. The fan-on timing can vary depending on voltage and ambient temperature. This unit offers a 12″ insertion, standard in the heating industry.
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