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Products | Thermal Engineering and HVAC | Heating and Ventilation in Buildings | HL 108

HL 108

Domestic Heating Circuit Training Panel

Technical Description

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 dial thermometers.

Learning Objectives / Experiments

- 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

Features

* Trainer on heating systems and plumbing₁
* Function of a central heating system₁
* High level of relevance to practice due to use of

commonly available commercial components

Alternative products

HL 112 -- Radiator Training Panel
HL 300 -- Central Heating System
HL 305 -- Hydronic Balancing of Radiators

Specification

[1] Trainer for heating engineering
[2] Heating controller with feedback of the feed flow temperature
[3] 4-way mixing valve DN 20
[4] Circulating pump
[5] 7 rotameters
[6] 4 plate heat exchangers as radiators
[7] 5 bimetallic dial thermometers
[8] 2 cold water connections DN 15
[9] 2 water connections for boiler DN 15
[10] 1 differential pressure overflow valve

Technical Data

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: 2x 150...1600L/h, 1x 0...1000L/h,

4x 0...400L/h

Dimensions and Weight

l x w x h: 1850 x 400 x 1150 mm (panel)
Weight: approx. 90 kg (panel)

Required for Operation

230V, 50Hz, 1 phase
Cold and hot water connection: 1.5bar

Scope of Delivery

1 trainer
1 manual

Order Details

065.10800 HL 108 Domestic Heating Circuit

Training Panel