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Products  |  Thermal Engineering and HVAC  |  Heating and Ventilation in Buildings  |  HL 620
HL 620 Domestic Heating System Control Training Panel Show data sheet (pdf file) Print page
Technical Description

The trainer clearly demonstrates the function of a heating controller. The electronic controller, room thermostat and mixing valve are real components. The water, indoor and outdoor temperatures are set using potentiometers. Lights indicate the function of the pumps and the boiler.

  The components are clearly laid out on the process schematic to show their relationships. The system reacts rapidly because the temperature parameters are manually set by potentiometers. 

Learning Objectives / Experiments
- Operation of a modern heating controller
- Temperature setting
- Operating characteristics
* Heating controller, controlled by atmospheric
* Fast system response to temperature modifications
Alternative products
HL 105 -- Three-Way Mixing Valve Training Panel
HL 106 -- Four-Way Mixing Valve Training Panel
HL 108 -- Domestic Heating Circuit Training Panel

[1] Trainer for digital heating control
[2] Actual components: servo motor, room thermostat with temperature sensor, heating controller
[3] 4 rotary potentiometers for adjustment of temperature setpoint
[4] Simulation of: pumps, domestic water tank, radiator, 3-way mixing valve and return valve; symbolically represented on panel

Technical Data

Servo motor for 3-way mixing valve

- manual or automatic operation
Adjustable temperature setpoints

- outdoor

- boiler outlet

- feed flow (heating circuit)

- domestic water

Digital heating controller

- controlled by atmospheric conditions


Measuring range

- temperature: -20...60C


Dimensions and Weight
l x w x h: 1270 x 690 x 1650 mm (panel)
Weight: approx. 40 kg (panel)
Required for Operation

230V, 50Hz, 1 phase

Scope of Delivery

1 trainer

1 manual

Order Details
065.62000  HL 620  Domestic Heating System
                     Control Training Panel
© 2005 G.U.N.T. Gerätebau GmbH