What is a central hot water system? Principle of operation and installation instructions

Central hot water system has the ability to save electricity effectively with high operating efficiency, meeting large demand for use. So in this article, let’s Tnhelearning.edu.vn learn the operating principles and instructions for installing a central hot water system to use!

What is a central hot water system?

Central hot water system is a hot water system that uses heating technology (Heat Pump technology) to absorb heat from the outside environment thanks to a series of internal devices capable of heating water and controlled by sensor relay.

Therefore, the water is heated quickly within just a few minutes. This hot water system can operate with a large capacity, to meet the needs of using a large amount of hot water without having to use a water tank.

There are two types of central hot water systems:

• The type that allows heat to move in a fixed direction, from cold to hot or vice versa.
• The type that allows users to adjust and choose the direction of heat movement is called a reversible central hot water system.

Structure and working principle of central hot water system

Structure

The central hot water system consists of the following main parts: Heat Pump, heat transfer equipment to heat water, circulating water pump, hot water return pump, water heater, water heater. automatic booster pump and electronic valve.

All connected to form a closed loop to create hot water according to the heating principle (Heat Pump technology) .

Working principle

The heat carrier is at a lower temperature than the air passing through the condenser. At this time, the blower unit blows continuously towards the condenser, causing the heat carrier to receive heat from the air and gradually heat up.

The heat carrier continues to pass through the air compressor, the pressure increases causing the temperature of the heat carrier to rise to 100 degrees Celsius .

Then, the heat carrier enters the heat exchanger to do the job of transferring heat to the water. When the water reaches the appropriate temperature, it will be led to the insulation tank to neutralize the cold water in the tank.

The heat carrier, after transferring heat to the water, will continue to pass through the pressure reducing valve, and then be lowered to the original temperature to conduct a new cycle. Like that, this process takes place continuously until all the water contained in the insulation tank reaches the temperature set by the user.

Moreover, at peak hours or times of high water demand, cold water can be directly supplied to the insulated tank and heated by absorbing heat from the outside environment to keep the water temperature inside. in an insulated tank to meet the needs of users.

Advantages and disadvantages of central hot water system

Advantage

• High durability, quick maintenance and easy installation with flexible positions.
• It is possible to achieve heating efficiency up to 400% , thereby contributing to saving about 70-80% of power consumption compared to conventional heating equipment such as water heaters.
• Ensure the safety of users because it does not use direct power to heat water, while also minimizing electrical leakage and minimizing pressure on the electrical load system.
• Fast hot water supply time with large water flow, meeting many users at the same time.
• Environmentally friendly because it does not emit harmful emissions like using the popular R410A gas.
• Equipped with a number of smart features to meet the needs of convenient use for users.
• You can customize the hot water temperature to suit your needs.
• Can produce cool steam to replace air conditioners on hot days.

Defect

High installation cost, ranging from 40 to 60 million VND (updated in April 2023). In addition, the cost for the central hot water system also varies depending on the capacity and usage needs of the investor.

What space is the central hot water system suitable for?

Small and medium space

The central hot water system is suitable for small and medium sized villas, hotels, motels and schools. In addition, many households have now begun to choose to use central hot water systems, instead of traditional water heaters.

Big spaces

Not only suitable for small and medium spaces, central hot water system is also suitable for use in larger spaces such as commercial centers, golf courses, office buildings, hospitals, swimming pools, universities. large-scale schools and resorts.

Installation instructions for central water heater systems

Step 1 : Prepare all the necessary equipment to install the central water heater system, including:

• Heat Pump Heat Pump, water heater heat transfer device, return pump and automatic booster pump.
• Control cabinets, solenoid valves, tanks, piping systems, connectors, … and auxiliary equipment.

Step 2 : Depending on the purpose of use, the central hot water system will be installed with additional items with certain advantages such as:

• The forced heating module is capable of generating heat to heat water and provide it to the user.
• The indirect heat exchanger module supports increased heat processing efficiency and minimizes the appearance of scale, keeping the hot water source clean and safe.
• The indirect heat exchanger module has the ability to store water after heating, according to the amount of water used.
• The auxiliary energy source is capable of maintaining hot water after the heating process, contributing to reducing operating costs and protecting the environment.
• The automatic hot water circulation cycle has the function of regulating the water temperature, so that the amount of water after heating has an even temperature.

Step 3 : Install the central water heater system according to the manufacturer’s instructions. Then check the machine for operation before finishing.

Thus, Tnhelearning.edu.vn has helped you better understand what a central hot water system is, along with the principle of operation and installation instructions if you plan to use it already!