Danfoss Burner Components Guide: Ignition Units, Fuel Pumps and Nozzles Explained
Reliable burner operation depends on several components performing different but connected functions. The fuel pump supplies oil under pressure, the nozzle atomises the fuel, and the ignition unit produces the spark needed to begin combustion.
Danfoss manufactures components for these stages of the burner system. However, buyers must select each component using its complete specification. Matching only the brand name or general product family can result in the wrong rotation, output, pressure range or electrical configuration.
Danfoss EBI4 Ignition Units
The Danfoss EBI4 series consists of compact electronic ignition units designed for selected small and medium-sized oil and gas burners.
Depending on the model, an EBI4 can provide one-pole or two-pole ignition. The range includes standard intermittent-duty units, continuous-ignition C-series models and higher-output HP versions.
Examples available through Mahalaxmi Sales include:
Danfoss EBI4 1P 052F4046
Danfoss EBI4 CM 052F4034
Danfoss EBI4 C1P 052F4036
Danfoss EBI4 M S 052F4045
Browse the complete Danfoss ignition transformer range.
What to check before selecting an EBI4
Verify:
Complete Danfoss code number
Supply voltage and frequency
One-pole or two-pole output
Intermittent or continuous duty
Standard or special housing
Secondary peak voltage
High-voltage connections
Mounting arrangement
Burner make and model
Two EBI4 units may look similar but have different output or duty-cycle specifications.
Danfoss BFP Fuel Pumps
A Danfoss BFP pump draws oil from the storage tank, increases its pressure and supplies it to the burner nozzle. Selected BFP models also incorporate a solenoid valve for fuel cut-off.
The model code can identify characteristics such as:
Pump family
Solenoid-valve arrangement
Rotation
Capacity
Nozzle or pressure-outlet position
Electrical supply
Pipe configuration
The rotation and nozzle position must be determined while viewing the pump from the shaft end.
Browse available Danfoss fuel pumps, including the Danfoss BFP21R3 071N0250.
What to check before ordering a fuel pump
Record:
Full pump model
Complete part number
Clockwise or anticlockwise rotation
Nozzle outlet position
Pressure range
Pump capacity
One-pipe or two-pipe installation
Solenoid voltage
Fuel type and viscosity
Mounting and shaft dimensions
A pump should not be replaced based only on its shape or connection size.
Danfoss Oil Burner Nozzles
The oil burner nozzle converts pressurised fuel into a controlled spray. Its capacity, spray angle and spray pattern affect flame formation and combustion performance.
A nozzle designation normally includes:
Flow capacity
Spray angle
Spray pattern
Series or application information
A higher-capacity nozzle does not automatically improve burner output. Pump pressure, combustion-air adjustment, burner-head design and firing-rate requirements must be considered together.
Browse available Danfoss burner nozzles.
How the Components Work Together
A typical startup sequence is:
The burner control initiates startup.
The burner motor starts.
The fuel pump draws oil and builds pressure.
The EBI4 ignition unit creates a spark.
The nozzle releases atomised fuel.
The fuel-air mixture ignites.
The flame sensor confirms combustion.
The control permits continued burner operation.
If the burner fails to start, the visible symptom does not always identify the defective component. Low fuel pressure, a blocked nozzle, an incorrect electrode gap or a weak spark can produce similar startup problems.
Get Danfoss Model-Matching Support
Mahalaxmi Sales supplies selected Danfoss burner components from Ahmedabad to customers across India.
For assistance, send:
A photograph of the component nameplate
Burner make and model
Existing part number
Supply voltage
Fuel details
Photographs of the mounting and connections
The complete code should always be confirmed before ordering.
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