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HL 350 Oil Burner Demonstrator
Education / GUNT Hamburg / Thermal Engineering and HVAC / Heating and Ventilation in Buildings /

The unit is equipped with an oil burner. The oil pressure at the burner, the combustion chamber temperature, measured with a thermocouple, and the preheat temperature of the oil are indicated on an additional digital measuring unit. A small oil tank is fitted on the lower shelf of the frame.

  The heating boiler features a viewing window for observing the flame. The heat generated can be dissipated using a plate heat exchanger and additional cooling water connections, enabling the unit to be operated continuously. 
  The exhaust gas can be studied in detail with the exhaust gas analyser HL 860.


Learning Objectives / Experiments

- Layout and operating behaviour of an oil burner
- Operation of a heating boiler with an oil burner
- Effect of burner setting on combustion and on the 
- Temperature measurements in different areas of 
  the combustion chamber
- Oil pressure measurements on the burner with 
  observation of the effects of changes on the flame
- Investigation of the effect of oil preheating on 
  combustion and particularly the flame
- Calculation of the heating capacity of a heating

- Function of a plate heat exchanger
- Temperature curves in a plate heat exchanger


[1] Functional heating boiler with oil burner
[2] Boiler with control unit
[3] Boiler casing equipped with a viewing window made of special glass
[4] Heating and cooling circuit equipped with expansion vessel, pump, boiler safety group, thermometers, water meter, heat exchanger
[5] Transparent oil tank with filling and bleed connections

[6] Dissipation of generated heat via plate heat exchanger and cold water connection 

Technical Data


- nominal rating: 17...21kW
- control unit with temperature limiter

- nominal power: approx. 18kW

- power consumption: 60W

- max. flow rate: 60L/min

- max. head: 4m
Plate heat exchanger

- capacity: 3kW

- 10 plates
Boiler safety group in accordance with DIN 4751

- 2.5bar

- 50kW

Oil tank: 15L

Water meter: 2.5m³/h

Measuring ranges

- pressure (oil admission pressure): 1...16bar

- temperature: 1x 0...1200°C / 1x -50...400°C /

  1x 0...120°C / 2x 0...80°C / 1x 0...60°C


Dimensions and Weight
l x w x h: 1100 x 740 x 1760 mm
Weight: approx. 200 kg
Required for Operation

230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase

Cold water connection

Scope of Delivery

1 trainer

1 manual

Order Details
065.35000  HL 350  Oil Burner Demonstrator