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In a closed central heating system water cannot be compressed so any increase in the volume, created by an increase in temperature, needs to be accomodated. This is done with the use of an expansion vessel, when the water in the system is cold the pre-charge pressure of the system forces a diaphram in the expansion vessel against the tank towards the inlet. As the temperature increases the expanding water volume pushes against the diaphragm creating additional volume for the water to enter the expansion vessel. As the temperature decreases the pre-charge pressure forces the water from the expansion vessel back into the central heating system. This maintains a constant pressure within the central heating system and helps to reduce energy and water consumption.
The Alpha Intec GS Gas Saver Combination Boiler is a gas combi boiler that features a built in gas saver designed to reclaim latent heat from the flue gases. The reclaimed heat is then used to pre heat water coming into the boiler helping to reduce the boilers work load as well as reduce its fuel consumption. By lowering the boilers work load the Intec GS Gas Saver Combination Boiler has an improved reliability and can have a longer working life than a standard condensing combi boiler. Also as the fuel consumption is lower the user will benefit from lower gas bills and the homes carbon footprint is also reduced making your home more environmentally friendly.
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