👉 👉 The plate heat exchanger gas combi boiler has two heat exchangers: the main and the plate heat exchanger.
👉 👉 The principle of this type of gas boiler is that the main heat exchanger heats the heating water, and the heating water will flow to the plate heat exchanger after heating, and then flow back to the main heat exchanger after heating the domestic water.
👉 👉 An important component of this gas-fired boiler is the three-way valve, which is used to control the direction of water flow, and when domestic hot water is needed, the heating water flows to the plate heat exchanger; When domestic hot water is not required, let the water flow to the radiators or underfloor heating.
👉 👉 The plate heat exchanger is also called the secondary heat exchanger, and the channels of heating water and domestic water are staggered inside the plate heat exchanger, separated by a thin layer of stainless steel sheets, which greatly improves the area and speed of cold and heat exchange. The illustration below provides a visual representation of this mechanism.