Abstract: Systems, methods, and circuitries are provided for a controller for a fuel oil burner system that controls a fuel oil burner to perform intermittent ON cycles. In one example, a controller includes a memory configured to store a value for one or more burner control delay periods and a processor. The processor is configured to perform an auto-set procedure in a first ON cycle. The auto-set procedure includes detecting an oil valve in the fuel oil burner; determining that the value for a burner control delay period is a default value; and in response, storing a valve-present value as the value for the burner control delay period in the memory.

Abstract: Methods, systems, and circuitries are provided for detecting flame in a fuel oil burner. In one example, a method includes receiving a series of one or more light samples, each indicative of a level of light. When the fuel oil burner is operating in the flame expected mode, the method includes determining whether the values of the one or more of the light samples exceed a flame threshold; determining whether the values of the one or more of the light samples meet secondary criteria; determining that a flame is present when the values of the one or more light samples exceed the flame threshold and meet the secondary criteria; and determining that a flame is not present when the values of the one or more light samples are below the flame threshold or do not meet the secondary criteria.

Abstract: Methods, systems, and circuitries are provided for detecting flame in a fuel oil burner. In one example, a method includes receiving a series of one or more light samples, each indicative of a level of light. When the fuel oil burner is operating in the flame expected mode, the method includes determining whether the values of the one or more of the light samples exceed a flame threshold; determining whether the values of the one or more of the light samples meet secondary criteria; determining that a flame is present when the values of the one or more light samples exceed the flame threshold and meet the secondary criteria; and determining that a flame is not present when the values of the one or more light samples are below the flame threshold or do not meet the secondary criteria.

Abstract: Systems, methods, and circuitries are provided for a controller for a fuel oil burner system that controls a fuel oil burner to perform intermittent ON cycles. In one example, a controller includes a memory configured to store a value for one or more burner control delay periods and a processor. The processor is configured to perform an auto-set procedure in a first ON cycle. The auto-set procedure includes detecting an oil valve in the fuel oil burner; determining that the value for a burner control delay period is a default value; and in response, storing a valve-present value as the value for the burner control delay period in the memory.

Abstract: A tank adapter has a body with first and second ends and an axial hole. A hollow cylinder of the body has an external tapered thread from the first end toward the second end of the body. A flange between the first and second ends has a flat face extending radially outward from the hollow cylinder to a flange outer diameter. A gage mount portion has a gage mount outer diameter that is less than the flange outer diameter and extends from the second end toward the first end and has gage mounting features for securing a level gage. A gasket mates with the flat face. In a first configuration, the external tapered thread engages an internal tapered thread of a first tank opening. In a second configuration, a collar nut compresses the gasket between the flange and a top rim of a second tank opening.

Abstract: A tank adapter has a body with first and second ends and an axial hole. A hollow cylinder of the body has an external tapered thread from the first end toward the second end of the body. A flange between the first and second ends has a flat face extending radially outward from the hollow cylinder to a flange outer diameter. A gage mount portion has a gage mount outer diameter that is less than the flange outer diameter and extends from the second end toward the first end and has gage mounting features for securing a level gage. A gasket mates with the flat face. In a first configuration, the external tapered thread engages an internal tapered thread of a first tank opening. In a second configuration, a collar nut compresses the gasket between the flange and a top rim of a second tank opening.