The primary divergences in vented and sealed systems
The primary divergences in vented and sealed systems
There are many alternative types of Central Heating System available and numerous types of heating boiler to drive these. This page will help you to understand the alternatives available to you. The main variances are determined by gas boiler type although this will influence the other system components.
Due to the familiar temperature that is experienced across the UK, Europe and in some parts of Russia, people barely find the need for air conditioning. The majority of new houses that are being built in this day and age are built with a Central Heating System.
Try running a household without your central heating system switched on and you will quickly picture how important the system is. Most homes are transformed when the heating system is switched on delivering a comfortable temperature. In addition to warming the dwelling house the central heating system will be used to supply hot water when called for. Dependability is a major requirement for your central heating system. You want to fit the central heating system to your family requirements so that it both meets your needs and uses gas efficiently.
There are two main types of Central Heating System; pumped/vented and sealed systems.
The most common type of system is the pumped/vented system. You will note that this configuration incorporates a feed and expansion tank in addition to a hot water cylinder. In addition to allowing for water expansion when heated the expansion tank also tops up the central heating system with water when necessary. If you look for the expansion tank in an existing system you will most normally find it in the loft.
As thinking develops sealed systems are now more usually being installed in homes. A sealed system, as the name suggests is a closed system so no water tanks are needed. The water for a sealed Central Heating System is supplied direct from the main water supply. It feeds directly from the main water supply. if you adopt this system you don’t need to use your attic for housing in the expansion tank thereby saving space, you will get the following advantages when adopting a sealed system:
- as the piping is removed from the attic it will not be in danger of freezing in the wintertime
- there are fewer system component parts reducing any upkeep requirements
- less pipework and seals to leak
- you will get fewer troubles from air ingress leading to corroding or blocks
Normal variations of pressure can be permitted in a sealed system through a pressure vessel that holds compressed gas. If the pressure becomes too high in a sealed Central Heating System; a escape valve will permit water to escape from the system and if the pressure drops too low a valve will open to refill the system with water.