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HL 356 Demo Unit, Gas Burner
Education / GUNT Hamburg / Thermal Engineering and HVAC / Heating and Ventilation in Buildings /

The HL 356 demonstrates the basic functioning of an original gas burner and its typical behaviour in case of faults. Standard industrial components are used. All operating states of the burner are simulated, allowing this demo unit to be operated without gas and flames. The unit is therefore totally non-hazardous and has no gas or waste gas lines. On the front panel is a graphical representation of the controller unit connection. Important electrical monitoring points (controller unit terminals) on the burner are accessible for fault analysis using lab jacks and bridges on the front panel. Faults can thus be checked either during operation under voltage or with no voltage as an isolated component.

Learning Objectives / Experiments

- Specification of boiler temperature at the
  thermostat (reference variable) using potentiometer

- Specification of boiler water temperature using 
- Representation of flame aspect and burner 
  operating state displays
- Possible faults (activated using pushbuttons): 
  * air pressure control device

  * boiler temperature controller

  * flame safeguard

  * gas solenoid valve

  * fan motor

  * gas pressure control device

  * safety temperature limiter

  * ignition transformer

  * current supply control unit


[1] Simulation model of a forced air gas burner and all burner operating states 
[2] Fault simulation: 9 fault switches in lockable box
[3] Additional actual system components: flame safeguard, gas pressure and air pressure control devices, ignition transformer, thermostat, safety temperature limiter, gas solenoid valves, fan motor, emergency switch heating system
[4] Important electrical monitoring points on burner accessible via lab jacks and measuring bridge connectors for fault analysis


Technical Data

Fully automatic air forced gas burner for natural gas

- power: 15...45kW

- connection load: approx. 160W

- motor power: 70W

- 16 digital inputs

- 14 digital outputs

- 2 analogue inputs

- 1 analogue output
Digital multimeter

- for direct or alternating current


Dimensions and Weight
l x w x h: 1250x700x1720mm
Weight: approx. 105kg
Required for Operation
230V, 50/60Hz, 1 phase
Scope of Delivery

1 trainer

1 LCD digital multimeter

1 set of cables

1 manual

1 gas burner manual

Order Details
065.35600  HL 356  Demo Unit, Gas Burner