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HL 352 Domestic Water Heating System
Education / GUNT Hamburg / Thermal Engineering and HVAC / Heating and Ventilation in Buildings /

The unit features a viewing window built into the side of the boiler which enables the flame to be observed. The immediate results of different burner settings are directly visible. The unit contains a heatable domestic water tank as a second load. The system is equipped with all stipulated safety devices. All water circuit temperatures and flow rates together with the oil pressure and combustion chamber temperature are measured. An integrated hot water circuit with a plate heat exchanger simulates a central heating circuit. The measured values are transmitted directly to a PC via USB. The data acquisition software is included.

  The system is supplied with an oil tank as standard. As accessories are three different burners available: fuel oil burner (HL 352.01), natural gas burner (HL 352.02) and propane gas burner (HL 352.03).


Learning Objectives / Experiments
- layout and operating behaviour of a boiler
- operation of a boiler with a burner (3 different 
  burners available as accessories)
- modification of the settings during operation with 
  observation of the effects on the flame
- temperature measurements in different areas of 
  the combustion chamber
- oil pressure measurements on the burner with 
  observation of the effects of changes on the flame
- investigation of the effects of oil preheating
- calculation of the thermal rating of a boiler
- function / temperature curve of a plate heat 

[1] function of a boiler

[2] fuel oil burner, natural gas burner and propane gas burner available as accessories

[3] boiler casing equipped with 1 viewing window made of special glass
[4] domestic water heater with circulating pump
[5] transparent oil tank with filling and bleed connections
[6] digital display for oil admission pressure transmitter, sensors for temperature and flow rate
[7] LabVIEW software for data acquisition via USB under Windows XP or Windows Vista


Technical Data


- nominal rating: 18...21kW
Control unit with temperature limiter

- power consumption: 60W

- 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

Domestic water heater: 160L

Oil tank, transparent: 15L

Measuring ranges

- oil pressure: 0...16bar

- gas pressure: 0...100mbar

- temperature: 1x 0...1.200°C / 1x -50...400°C /

  8x 0...100°C 

- flow rate: 3...60L/min


Dimensions and Weight
LxWxH: 1.650x1.000x1.850mm
Weight: approx. 320kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 trainer without burner

1 LabVIEW software CD + USB cable

1 manual

Order Details

065.35200  HL 352  Domestic Water Heating System