Combi Boiler Sealed Central Heating System Diagram

A combi boiler system combines central heating and hot water within the same compact unit.

Combi boiler sealed central heating system diagram. This helps the installer create a sealed system when installing central heating. For central heating 2. Hamworthy s upton condensing boilers and stratton mk2 wall hung boilers are suitable for installation in sealed heating systems only. Central heating systems are either open vented or sealed systems.

Many manufacturers are now stipulating a sealed system to ensure system cleanliness and protect the boilers. Whichever fuel the boiler is running on whether it s mains gas oil or lpg it enters a sealed combustion chamber inside the boiler and an electric ignition sets it alight. A secondary plate heat exchanger. So in places where space and hot water requirements are limited such as flats these can be very popular systems.

A modern condensing boiler maximises fuel efficiency by extracting heat from the latent waste flue gases by means of a condensing system. How a combi boiler system works. Sealed system using a combination boiler the majority of modern combination boilers often include a pump pressure gauge expansion relief valve filling loop and expansion vessel in with the boiler. Everyone has a basic understanding of how a boiler works.

A primary heat exchanger. System boilers are slowly becoming more common. You should read this page in conjunction with the page on boilers and the page on heating controls. The combi boiler doesn t require a bulky storage cylinder and can easily fit into most kitchens or storage cupboards making them the ideal system for houses with limited space.

No external pump no tanks no external expansion vessel no motorised valves and in many cases item 6 is not needed either. 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. Combi system this diagram illustrates how simple the heating system connected to a combi boiler is. Combi boilers are available in gas electricity or oil depending on your fuel preference.

They house two heat exchangers. Combi is short for combination. Your combi boiler doubles as a central heating unit by adding a radiator. However our purewell variheat cast iron condensing boiler can be.

The diagrams below show three central heating types. Those over 10 years old have a simple heat exchange system which can be as low as 70 fuel efficient. Hot water is made instantaneously so a hot water cylinder isn t. The boilers fitted to older central heating systems i e.

Combination boiler system diagram often referred to as a combi boiler this type of installation heats hot water as you need it without the need for a hot water storage tank.