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Products  |  Thermal Engineering and HVAC  |  Heating and Ventilation in Buildings  |  HL 392C
HL 392C Safety & Control in Heating Systems Show data sheet (pdf file) Print page
Technical Description

  Using the trainer various safety and control devices can be investigated and evaluated. Typical industrial components are used. The measured values are transmitted directly to a PC via USB. The data acquisition software is included.

Learning Objectives / Experiments
- function and operating behaviour of 
  * safety valve
  * quick-action ventilating valve
  * safety pressure cut-out
  * thermal discharge safety device
  * thermostatic valve
  * temperature controller 
  * air separator
  * flow switch

* Trainer for the investigation of heating system

   safety fittings with data acquisition

Alternative products
ET 860 -- Steam Boiler Safety & Control
HL 109 -- Safety Devices Training Panel

[1] investigation of heating safety fittings
[2] demonstration of the function of safety fittings using compressed air: thermostatic valve, safety pressure cut-out, safety valve, temperature controller, thermal discharge safety device
[3] demonstration of the function of safety fittings in a closed water circuit with circulating pump and expansion vessel: air separator, quick-action ventilating valve, safety valve, flow switch, pressure reducing valve

[4] electrical heater for thermal safety fittings: temperature controller, thermal discharge safety device
[5] GUNT software for data acquisition via USB under Windows Vista or Windows 7


Technical Data

Thermal discharge safety device

- actuated at: 98C

Temperature controller: 70...100C

Safety pressure cut-out: 1...10bar, adjustable

Safety valve: 2,4bar

Flow switch: 7,7...13,4L/min (increasing flow rate)

Pressure reducing valve: 1,5...6bar


Heater: 800W

- power consumption: 70W

- max. flow rate: 60L/min

- max. head: 4m

Measuring ranges

- flow rate: 1...25L/min

- temperature: 0...160C

- pressure: 2x 0...10bar


Dimensions and Weight
LxWxH: 2.010x750x1.910mm
Weight: approx. 226kg
Required for Operation

230V, 50Hz, 1 phase
Compressed air: 3bar

Water supply

Scope of Delivery

1 trainer

1 collecting tank

1 GUNT software CD + USB cable

1 manual

Order Details

065.392C0  HL 392C  Safety & Control in

                                    Heating Systems

© 2005 G.U.N.T. Gerätebau GmbH