Unvented Cylinder Heating System Diagram

Prestige plumbers expert local plumbers on the south coast of england have outlined the below guide explaining how unvented systems work.

Unvented cylinder heating system diagram. The s plan is popular because it is versatile you can add an unlimited number of zones simple to wire and easy to fault find on. Generally only used when installing an un. A guide to the most common types of domestic heating and hot water systems with diagrams including indirect boiler system unvented system thermal store. The electric versions use a coiled heating element to heat the water rapidly in a.

The diagram below shows the general layout of an unvented hot water system. This engineer must also hold their unvented hot water qualification otherwise known as a g3 qualification to install maintain or inspect unvented cylinders. Nb not to be confused with vented and unvented hot water tanks which are explained in our guide to hot water cylinders many homes in the uk still have an open vented heating system and in some cases they are the better option for your home. The arrangement shown here is most likely for an existing y plan system where the cylinder is being changed to an unvented one.

Visit the unvented cylinder page on our interactive house for comprehensive information on unvented hot water systems. A guide to the different ways of heating domestic hot water so you can identify problems and faults with the hot water tank or central heating system and carry out any maintenance needed. There are three types of domestic hot water system. For an entirely new installation s plan would be a far better choice as that does not have the default open problem and also allows the use of multiple zones for the central heating.

Adding a 2 port valve and a dual thermostat to a y plan heating system when an unvented hot water cylinder is used. S plan heating systems are now the most common type of system installed in the uk after combination boiler systems which do not have any external motorised valves. Central heating systems are either open vented or sealed systems. Unvented hot water cylinders store water from the mains water supply.

This first is a combi boiler system where the boiler directly heats the water on demand. Any cylinder boiler or component in your central heating system must be installed and maintained by a gas safe engineer. The water is heated either with heat from a boiler or using other electrical heating elements.