The central heating system in the home plays an important role. It keeps the homeowner supplied with heat and hot water that makes life generally more comfortable. However, what systems are available. London Plumbers fit wet systems. A central heating system is a way of creating warmth in a home from, as the name says, a central point. The majority of homes are fitted with something called a wet system. In a ‘wet system’ the hot water is pumped through a system of pipework that are connected to radiators all over the home. The centre point of the system is a boiler that usually burns a gas fuel, or sometimes there may be a ‘heat exchanger’ which heats the water that feed pipe network. ‘Wet systems’ are probably the most popular type of heating system used the UK. A registered Plumber can supply and fit a boiler. The radiators, despite their title, do not just radiate heat, they actually deliver most of their heat by convection, this is air warmed by the radiator that naturally rises, and cool air falls relative to it, as a result this warmed air circulates and that part of a room is warmed. The pipework can also be connected to a hot water cylinder (tank), that provides a supply of hot water for bathing and washing. The Pipe System is usually 15mm copper pipes, whereas, pipes connecting the boiler and the pump and the points were the circuit splits are usually 22 or 28mm in size. The capillary type of joints with solder are best (apart from connections to boiler, pump and valves), and are guaranteed against leaking. Newer plastic pipework has been made for use in wet central heating systems, but they can’t connect to the boiler, so use a short piece of copper pipe instead. The Two-Pipe System is where the generated hot water is circulated from the pump to the inlet valve on every radiator in a flow pipe, that stops at the last radiator in the system. A secondary pipe, called the return pipe, takes the cool water from the radiators back to the boiler to be re-heated.
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