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Products | Thermodynamics, Heating and Sanitary Systems | Heating and Ventilation | HL 300

HL 300

Central Heating System

Technical Description

The system contains two independent heating circuits that are equipped with a three-way mixing valve and a four-way mixing valve. The heat provided by an electric boiler can be dissipated via four different radiators. To investigate the full load behaviour of the boiler over an extended period, a plate heat exchanger is fitted in the domestic water circuit. The system has a closed water circuit with expansion vessel. Relevant temperatures and pressures are indicated on easy-to-read instruments. The system is controlled using a state-of-the-art digital controller. The controller can be configured over the RS232 interface.
A supply of three-phase mains electricity is required for operation.

Learning Objectives / Experiments

· Familiarisation with the components of a modern heating system and their function
· Operating behaviour of a digitally controlled heating circuit with three-way mixer
· Operating behaviour of a digitally controlled heating circuit with four-way mixer
· Investigations on a plate heat exchanger operated in counterflow
· Investigation of pressure loss on isolating fittings of different designs
· Filling heating systems
· Commissioning heating systems
· Balancing radiators
· Determination of pump curves
· Determination of pipework characteristics
· Behaviour of system with air in the pipework

Features

Modern heating system with digital controller
Closed water circuit with expansion vessel
Convenient configuration of the digital controller via RS 232 and RS 485 interfaces using a PC possible
Flexible in use due to installation on a laboratory trolley

Alternative products

HL 108 -- Domestic Heating Circuit Training Panel
HL 112 -- Radiator Training Panel
HL 305 -- Hydraulic Compensation of Radiators
HL 351 -- Domestic Heating Furnace

Specification

[1] Function and operating behaviour of a modern heating system with digital heating controller with RS232 interface
[2] Four-way mixer and three-way mixer
[3] Electric boiler
[4] 2 circulating pumps, 1 domestic water pump
[5] 4 different radiators and additional plate heat exchanger with shower system as domestic water consumer
[6] Coloured pipes indicate heating feed and return
[7] Measurement of temperature, pressure and flow rate
[8] 400V, 50Hz, 3 phase or 230V, 60Hz, 3ph.

Technical Data

Boiler, 4 stages: 6/9/12/15kW, max. feed temperature: 95°C, water tank capacity: 16ltr
Circulating pump 3 stages: 60W, max. flow rate: 60ltr/min, max. head: 4m
Domestic water pump: 20W, max. 640ltr/h, max. 0.14bar
Plate heat exchanger: 3kW, 10 plates
Measuring ranges: temperature: 3x 20...120°C / 2x 0...120°C / 2x 0...100°C / 4x 0...80°C, pressure: 8x 0...2.5bar, flow rate: 100...1000ltr/h, water meter: 2.5m³/h

Dimensions and Weight

l x w x h : 2100 x 800 x 1850 mm
Weight : approx. 280 kg

Connections

400V, 50Hz, 3 phase or 230V, 60Hz, 3 phase

Scope of Delivery

1 trainer, complete, 1 instruction manual

Order Details

065.30000 HL 300 Central Heating System