Is your Gas Heating System vented or sealed
Is your Gas Heating System vented or sealed
These days there is a selection of boiler forms to drive your central heating system according to your dwelling house needs. This document will help you to picture the choices available to you. The main component in a central heating system is the central heating boiler and this will be chosen in accord with your needs.
In terms of the systems within your dwelling the central heating system will be one of the most expensive and the one that is in day-to-day use, and cooling systems are seen less frequently. Whether you are looking at a completely new home or an established house one of the characteristics you will need to look into is its central heating system.
The value of central heating systems is fully realised in wintertime although most are also used to supply hot water every day of the year. A new central heating system can give your dwelling the ambiance you are looking for. In addition to heating the dwelling house the central heating system will be used to furnish hot water when required. As heating and hot water are essentials your system needs to be reliable. Out of sight daily functioning without unforeseen breakdowns is a basic requirement of any central heating system.
You will find 2 main system variants, vented and sealed central heating systems.
The pumped/vented system is most frequently seen. This type of system has a feed and expansion tank in concert with a hot water cylinder. Hot water expands and in this type of system flows back to the expansion tank. If you look for the expansion tank in an existing system you will most commonly find it in the loft.
A slightly newer, more present-day system that numerous people are choosing over a pumped or vented central heating system is a sealed system. Sealed systems have fewer elements having no need for the water expansion tank. A sealed Central Heating System is connected to the mains water supply to allow the removal of the water feed tank. This eliminates the requirement for any pipework or central heating water tanks in the loft, you will get the following advantages when acquiring a sealed system:
- frozen wintertime pipe work from copper pipes in the attic it is now eradicated
- fewer component parts mean reduced purchase costs
- less pipework and seals to leak
- you will get fewer problems from air entry leading to corroding or blocks
Any water pressure variations are accommodated by the incorporation of a pressure vessel. Safety valves open if the inner pressure is too high. Other automated valves open to allow the interior water to be topped up if it drops to low.