It is not only this century and the last, that man has tried to heat their houses and water.
Throughout history human beings has attempted to heat their houses, cave men with the fire. Ancient Asians used hearths and stoves to heat water or air, channelled through their floors. While the Romans used hypocausts to warm up their public baths and villas and also the Spanish radiated their floors with a system locally known as ‘gloria’, which used hay being a combustible.
During the middle ages, when fireplaces began to become popular, heating systems became virtually unknown. Until in 1777, William Murdoch learned that gas might be used for light. Then in 1824, the birth of gas cooking emerged, and naturally evolved to become used to heat homes and water for bathing. Surprisingly, baths were not used until 1850 when gas jets would heat the bath from underneath.
However, it wasn’t until 1868 when Benjamin Maugham, painter and decorator had the idea of heating water with gas. Although, Maugham didnt realise it, the technology of heating our homes in the 21st century came to be. He is generally accepted because the inventor of the Combination ‘Combi’ Boiler, that he called “the Geyser”.
Maugham invention disappointingly, was viewed as dangerous as well as a health risk since it had no temperature controls so scalding was possible and it had no flue for ventilation, meaning people may be subjected to lethal emissions. He was not an engineer and will make virtually no money from he’s invention.
Nevertheless in 1889, 21 years later a Norwegian Engineer Edwin Ruud discovered Maughams ‘Gas Geyser’ prototype and after studying the style plans and building a few improvements, Ruud launched he’s own hot water heater in the united states, after emigrating from Norway. Hes new Ruud Manufacturing company had been a huge success and is still running today in Pittsburgh.
Initially, a combination boilers were popular in the US, and was exported to Europe where it had been highly popular, however in the UK, lots of people opted for the standard system boiler which utilized space inside the loft and allowed many individuals to bathe simultaneously. It is actually only in the last 10-15 years that Combi Boilers Yorkshire started to emerge as the main boiler system throughout the uk, attributed with more than 50% of all new boiler installations.
One of the most commonly asked questions that I get asked is: why there is not any warm water inside my taps? So that you can diagnose this issue we have to establish the type of heating system that is installed on the property involved. Generally there will be several choices to pick from such us: instantaneous electric hot water heaters (electric), instantaneous gas hot water heaters, storage water heaters, electric showers, gas fired combination boilers, gas fired traditional boilers and hot water cylinder, unvented hot water cylinders and variations on above.
This series of articles will deal with the most common systems in UK starting with combination boilers also known as ‘combi’ boilers. Other systems we will discuss in further submissions are:
No hot water on combination boiler. One thing to sign in case there is no very hot water on combination boiler is to find out if it functions in central heating mode. To accomplish that you will need to make certain that your wall mounted thermostat is calling for heat. Additionally you may have a programmable thermostat. In that case make sure that it is actually set to constant on central heating mode. If boiler fires up we can suspect that the diverter valve is stuck on heating mode. A visit from an engineer will be required to replace this part.
If combination boiler will not function in both hot water and heating modes there are a few steps that may be performed by the owner before calling a heating engineer to eliminate most apparent possible causes. Combination boilers require on average 1 bar pressure in central heating system system to operate satisfactorily. Choose a pressure gauge on the front in the boiler or sometimes on central heating pipe work.
Most boiler makes may have markers in green or red pointer (as on the picture) showing required system pressure. If system pressure is low then which may be the explanation for boiler not firing up within both domestic very hot water and heating modes. By low we understand below marked field on the gauge. Most boilers will not fire up if pressure drops below .5 bar. If low pressure continues to be detected next step would be to top up system pressure. Greater part of boilers on the market could have been fitted having a filling zdodxn that includes no.2 valves and a flexible metallic connector. Good plumbing practice requires that filling loop should be detached and left through the boiler without.2 valves capped of to avoid accidental over pressurising the program and leaks from PRVs (Pressure Relief Valve). In fact however 90% of installation have filling loops attached. Let’s assume we now have our filling loop set up.
Some filling loops will have a singel tap while other may have 2 taps or a flat screwdriver point. On single tap ones it is sufficient turn one tap on. On filling loops with 2 taps you should turn both on. On filling loops without taps you might need a small flat screwdriver to transform them on / off.
Be aware that some combination boilers and never fitted with filling loops. The most effective example is Worcester Bosh CDi variety of boilers which require an exclusive plastic answer to top them up.
With energy prices rising year on year many individuals have opted for the combi boiler due to its advancement in efficiency, energy financial savings and also the ever growing need for more storage area inside their homes when compared to inefficient, high running cost and huge storage needs in the traditional system boilers.