Hot water heating systems transport thermal energy via the heating medium water in order to heat indoor spaces. They are the most common method of heating in residential and office buildings. Such systems consist of four main components: hot water generator, pipework with pumps for transporting the hot water, radiators as heat exchangers and elements for controlling and regulating the temperature.
The HL 300 device forms a complete hot water heating system with two independent heating circuits and a domestic water circuit. One heating circuit is equipped with a three-way mixing valve, the other with a four-way mixing valve. Both heating circuits have weather-compensated feed flow temperature control system. The heating circuit with three-way mixing valve is equipped with a domestic water priority circuit. The heating circuit with four-way mixing valve simulates operation as a district heating circuit.
The heat provided by an electric heating boiler can be emitted via four radiators, which are selected via valves. A plate heat exchanger is located in the domestic water circuit to allow investigations into the full load behaviour of the heating boiler over a longer period of time. The trainer has a closed water circuit with expansion vessel. The heating system is controlled by a state-of-the-art digital controller. Important temperatures and pressures are displayed on easy-to-read instruments and are available for further calculations.
The mobile trainer is equipped with 4 lockable castors, of which 2 have brakes. This enables easy manoeuvring and a secure base when stationary. The trainer can be operated from both sides.