HL 108 Domestic heating circuit training panel
A pump circulates water through four radiators. The temperature of the radiators is set using thermostatic valves.
A digital controller keeps the room temperature constant by driving the four-way mixing valve. This valve sets the temperature of the boiler return flow and the feed flow. Cold water connections enable the heat generated to be dissipated. The differential pressure across the pipe system is limited using a relief valve. Temperatures can be read on bimetallic thermometers.
- trainer on heating systems and plumbing
- function of a central heating system
- high level of relevance to practice due to use of commonly available commercial components
Pump
- power consumption: 60W
- max. flow rate: 60L/min
- max. head: 4m
Radiator
- plate heat exchanger with 8 plates
- capacity: 3kW
Heating controller with feedback of the feed flow temperature
- inputs: 2 temperature sensors
Measuring ranges
- temperature: 0…100°C
- flow rate:
- 4x 0…400L/h
- 1x 0…1000L/h
- 2x 150…1600L/h
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
- trainer for heating engineering
- heating controller with feedback of the feed flow temperature
- four-way mixing valve DN 20
- circulating pump
- 7 rotameters
- 4 plate heat exchangers as radiators
- 5 bimetallic thermometers
- 2 cold water connections DN 15
- 2 water connections for boiler DN 15
- 1 differential pressure overflow valve
- familiarisation with a central heating system and its components
- hydronic balancing of radiators
- function and operating behaviour of a circulating pump
- function and operating behaviour of a heating controller
- function and operating behaviour of a four-way mixing valve
