3.1

2Purpose of the Heat Pump

2.1Application

The air-to-water heat pump is designed for use in existing or newly built heating systems.

It is designed exclusively for heating domestic and heating water!

The heat pump is suitable for mono energy and bivalent opera- tion down to an external temperature of -20 °C.

Proper defrosting of the evaporator is guaranteed by maintaining a heating water return flow temperature of more than 18 °C dur- ing continuous operation.

The heat pump is not designed for the increased heat consump- tion required when a building is being dried out. The additional heat consumption should be met using special devices provided by the customer. If a building is to be dried out in autumn or win- ter, we recommend installing an additional heating element (available as an accessory).

ATTENTION!

The device is not suitable for operation with a frequency converter.

2.2Operating Principle

Outside air is drawn in by the ventilator and fed via the evapora- tor (heat exchanger). The evaporator cools the air, i.e. it extracts heat from it. This extracted heat is then transferred to the working medium (refrigerant) in the evaporator.

The heat is “pumped” to a higher temperature level by increasing its pressure with the aid of the electrically driven compressors. It is then transferred to the heating water using the liquifier (heat exchanger).

Electrical energy is used to raise the temperature of the heat in the environment to a higher level. Because the energy extracted from the air is transferred to the heating water, this type of device is called an air-to-water heat pump.

The air-to-water heat pump consists of the main components evaporator, ventilator and expansion valve, as well as the low- noise compressors, liquifier and electrical control system.

At low ambient temperatures, humidity accumulates on the evap- orator in the form of frost reducing the transfer of heat. The evap- orator is defrosted automatically by the heat pump as required. Steam may be emitted from the air outlet depending on the at- mospheric conditions.

3 Scope of Delivery

3.1Basic Device

The heat pump is of compact design and is supplied complete with the components listed below.

R404A is used as the refrigerant.







     

1)Evaporator

2)Check valve

3)Ventilator

4)Switch box

5)Controllers

6)Filter dryer

7)Liquifier

8)Expansion valve

9)Compressor

English

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Dimplex LI 24 TEL, LI 28TEL Purpose of the Heat Pump, Scope of Delivery, Application, Operating Principle, Basic Device
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LI 28TEL, LI 24 TEL, LI 20TEL specifications

Dimplex is a renowned name in the electric heater market, and its LI series, comprising the LI 20TEL, LI 24TEL, and LI 28TEL models, exemplifies innovation in energy-efficient heating solutions. These wall-mounted convection heaters combine sleek design with advanced technologies to meet the diverse needs of modern living spaces.

The LI 20TEL is a compact unit, specifically designed for smaller rooms or spaces where efficiency is paramount. With a capacity of 2000W, it delivers rapid warmth while maintaining energy efficiency. Its built-in thermostat allows for precise temperature control, ensuring that the desired comfort level is consistently achieved. This model also features a silent operation, making it suitable for bedrooms or offices where noise levels should be kept to a minimum.

The LI 24TEL, the middle variant in the series, offers a power output of 2400W, which is optimal for medium-sized areas. This model comes equipped with advanced technology that enhances its energy efficiency, including a programmable timer and multiple heat settings. Homeowners can easily customize their heating schedules to suit their daily routines, further reducing energy costs. This model also includes safety features such as an overheat protection mechanism, ensuring peace of mind during use.

The LI 28TEL stands as the most powerful option in the lineup, with a robust 2800W output, making it ideal for larger rooms or open-plan spaces. This model not only provides rapid heating but also employs advanced convection technology to circulate warm air efficiently throughout the room. Its external casing is designed to remain cool to the touch, providing an added layer of safety for homes with children or pets. Additionally, the LI 28TEL includes Wi-Fi connectivity, allowing users to control the unit remotely via a smartphone app, making it a truly modern heating solution.

In summary, the Dimplex LI series - LI 20TEL, LI 24TEL, and LI 28TEL - represents an excellent blend of modern aesthetics and high-performance heating technology. Each model is equipped with features tailored to different space requirements, from compact efficiency to powerful output. With energy-saving options, programmable settings, and enhanced safety features, Dimplex continues to lead the way in providing high-quality electric heating solutions for today's energy-conscious consumers.
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