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Indirect water heaters are not only essential appliances when the weather turns cold but also the best choice for families with children, elderly individuals, or those who frequently bathe at night. In this article, Home Appliances Superstore will explore the basic structure of an indirect water heater. Understanding this issue will enable you to use the appliance more efficiently and effectively.
What is an Indirect Water Heater?
An indirect water heater is a device that provides hot water by using an inner tank to heat water to the preset temperature within a period ranging from 5 to 15 minutes. With separate hot and cold water pathways, heating water once can indirectly supply hot water for the whole family. You can rest assured because after heating the water, you can turn off the power and use it as usual. Therefore, it is very safe to use, avoiding risks such as electrically contaminated water.
Understanding Indirect Water Heaters
The Anatomy of an Indirect Water Heater
Plastic Casing: The outer shell of an indirect water heater is typically made of plastic for smaller tanks and electrostatically painted steel for larger ones.
Inner Tank Core: This is a crucial component for storing water after it has been heated. To minimize the buildup of dirt and sediment in the tank core, which can degrade water quality and protect components from the risk of damage or short circuits due to leaking water, the tank core is coated with a protective enamel layer. This enamel layer acts to shield the core from corrosion in all water environmental conditions.
Insulation Layer: The insulation layer is tasked with retaining heat extremely well, keeping the water in the tank hot for longer, minimizing heat loss, and saving energy. Additionally, they enhance safety for users.
The Structure of Indirect Water Heater.
Magnesium Rod: Although the tank core is coated with enamel to limit sediment buildup and prevent rust, there are still small untreated areas prone to rust or corrosion when exposed to water and high-temperature environments. Therefore, the main function of the magnesium rod is to neutralize acidic corrosion inside the tank. To ensure the longevity and safety of the water heater, the magnesium rod should be replaced every two years.
Temperature Control Knob: Depending on the type of water heater, the temperature adjustment knob can be in the form of a rotary knob or electronic push-button, touch-sensitive knob. This knob allows users to select the desired hot water temperature.
Heating Element: This component is responsible for heating the water. The heating element is primarily made of copper or stainless steel 304 to prevent overheating and increase durability.
The Structure of an Indirect Water Heater.
Inlet and Outlet Pipes: Designed with large threaded systems, facilitating easy and secure connection of wires. The red color indicates the hot water outlet, usually located on the left side of the water heater. The blue color represents the cold water inlet for the tank, which also serves as the fitting for safety valves and water supply control for the tank in one direction.
Thermal Relay: When the temperature reaches the set level, the thermal relay senses and automatically shuts off the heating function of the water heater to ensure safety.
One-way Drain Valve: The valve's function is to drain water in case of tank malfunctions, ensuring safety for users. It only allows water to enter the tank without allowing water to flow back even when the system's water supply runs out. The valve maintains a fixed amount of water sufficient to submerge the burner.
Phuong Khanh
