Sealed or Vented systems
Sealed or Vented systems
Central heating systems have developed and that there are now many different types each with differing advantages and drawbacks according to your needs. Below you will find an outline of the primary forms of central heating system presently traded. When you purchase a central heating system you are essentially buying a collection of different parts including a gas boiler and radiators.
In terms of the systems within your dwelling the central heating system will be one of the most costly and the one that is in everyday use, and cooling systems are seen less frequently. Most existing houses and virtually all new dwelling developments now contain central heating systems to heat the dwelling and furnish hot water.
Try running a dwelling house without your central heating system switched on and you’ll quickly picture how important the system is. No one would deny how a family is transformed when we install an efficient heating system. The central heating system also can give you a cheap source of hot water. As heating and hot water are essentials your system needs to be reliable. You will want an efficient system that works in the background without any niggling breakdowns.
The main variants of the central heating system are sealed systems and pumped systems.
Expect to find a pumped/vented central heating system as they are the most frequent. A feed and expansion tank is incorporated into this type of central heating system alongside a hot water cylinder. The expansion tank allows the system to be topped up with water and creates headroom for the hot water to expand when the heating system is used. The attic is most commonly used to house the expansion tank as it needs to be high in the house.
As thinking develops sealed systems are now more normally being installed in homes. There is no need for the water expansion tank if you prefer to have a sealed central heating system fitted. The water for a sealed Central Heating System is supplied direct from the main water supply. It feeds directly from the main water supply. There are no tanks or piping in the attic, the sealed nature of the system without any venting delivers a number of benefits:
- you don’t need to care about pipework in the attic freezing
- your maintenance requirements are reduced as there are fewer elements
- less chance of leakages
- you will get fewer troubles from air entering leading to corroding or blockages
A sealed system accommodates variations in pressure in the water supply by using a water pressure vessel. A escape valve will open if the pressure is higher than recommended. Similarly cold water is allowed into the system if the pressure is lower than the advocated level.