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Products  |  Thermal Engineering and HVAC  |  Heating and Ventilation in Buildings  |  HL 722
HL 722 Control Unit for Ventilation System Show data sheet (pdf file) Print page
Technical Description

The trainer HL 722 is required if the ventilation system HL 720 is to be used for experiments with room temperature control.

  The trainer is connected between the ventilation system and an external source of hot water using quick-release couplings. With this arrangement it is possible to demonstrate room temperature control in ventilation systems.

  Only original parts were used for the trainer.


Learning Objectives / Experiments
- Temperature control of the airflow in a ventilation system

* Temperature control for ventilation system HL 720


[1] Temperature control of a ventilation system
[2] Circulating pump
[3] 3-way mixing valve DN 20
[4] Electronic controller with temperature sensor and setting of the reference variable
[5] 3 thermometers and 1 temperature sensor with display

[6] Quick-release couplings for connection to hot water supply and ventilation system

Technical Data


- power consumption: 60W

- max. flow rate: 60L/min

- max. head: 4m

Measuring ranges

- temperature: 1x -50...600C, 3x 0...120C


Dimensions and Weight
l x w x h: 1000 x 690 x 1500 mm
Weight: approx. 54 kg
Scope of Delivery

1 trainer

1 manual

Order Details

065.72200  HL 722  Control Unit for Ventilation


© 2005 G.U.N.T. Gerätebau GmbH