Boiler - what is it?
A boiler is a closed vessel in which water or other fluid is heated. The fluid does not necessarily boil. (In North America the term "furnace" is normally used if the purpose is not actually to boil the fluid.) The heated or vaporized fluid exits the boiler for use in various processes or heating applications,12 including water heating, central heating, boiler-based power generation, cooking, and sanitation.
Connecting a new division of water
Plumbers deal with the installation of water and sewage networks in a new house or new block of flats to be put into use. Then connects the boiler water. It also happens that in the old blocks, there is one department of water and after several years of use of the building administrator decides to perform the second division of water, and by the way checks the patency of the sewage system. Carrying out such work is indeed a nuisance for the residents of the block, but it greatly increases the standard of their daily lives. After their performance will be able to eg. To connect an additional bathroom faucet. Sometimes the desire to connect new devices to the network plumbing associated with the need to perform some plumbing work.
About the word
The word "plumber" dates from the Roman Empire. The Latin for lead is plumbum. Roman roofs used lead in conduits and drain pipes and some were also covered with lead, lead was also used for piping and for making baths.5 In medieval times anyone who worked with lead was referred to as a plumber as can be seen from an extract of workmen fixing a roof in Westminster Palace and were referred to as plumbers "To Gilbert de Westminster, plumber, working about the roof of the pantry of the little hall, covering it with lead, and about various defects in the roof of the little hall".6 Thus a person with expertise in working with lead was first known as a Plumbarius which was later shortened to plumber.