Honeywell L404V-1046 Oil Burner Pressuretrol

The Honeywell L404V-1046 Pressuretrol is a pressure-based control device for oil burner systems that automates burner operation. It monitors system pressure and switches the burner on or off as pressure rises or falls, helping maintain consistent cycling in oil-fired heating equipment. As part of Honeywell's L404V family, this unit is wired into the burner control circuit to provide cut-in and cut-out behavior based on oil line pressure. The L404V-1046 is designed for use in standard oil burner circuits, interfacing with the boiler or burner relay to regulate the firing sequence and respond to fluctuating pressure in the burner loop. By controlling when the burner fires, it supports reliable operation and contributes to predictable heat output in oil-fired heating installations.