HL 351 Domestic heating boiler
Different operating points can be investigated by changing the oil pressure after the preset boiler water temperature has been reached.
An integrated hot water circuit with plate heat exchanger simulates the heating circuit in a house. The heat generated can be dissipated via cooling water connections, enabling continuous operation. The heat transferred can be calculated.
Connections for an external heating circuit are provided on the rear of the boiler. This allows the HL 351 to be expanded into a complete heating system using training panels from the HL series.
- trainer for oil burners
- transparent oil tank
- can be extended to form a complete heating system
Boiler
- nominal rating: 17…21kW
- control unit with temperature limiter
Burner
- nominal power: approx. 18kW
Pump
- power consumption: 70W
- max. flow rate: 60L/min
- max. head: 4m
Plate heat exchanger: 3kW, 10 plates
Boiler safety group in accordance with DIN 4751
- 2.5bar
- 50kW
Oil tank: 15L
Water meter: 2.5m3/h
Measuring ranges
- temperature: 4x 0…120°C
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
120V, 60Hz, 1 phase
- functional heating boiler with oil burner
- boiler with control unit
- heating and cooling circuit equipped with expansion vessel, pump, boiler safety group, thermometers, water meter, heat exchanger
- transparent oil tank with filling and bleed connections
- dissipation of generated heat via plate heat exchanger and cold water connection
- function of an oil burner
- operation of a heating boiler with an oil burner
- burner adjustment during operation
- temperature measurements in different areas of the combustion chamber
- calculation of the heating capacity of a heating boiler
- function of a plate heat exchanger
- temperature distributions in a plate heat exchanger