The central heating portion of a combi is on a pressurised closed loop system heated by the boiler as required.
Combi boiler central heating system layout.
Your combi boiler doubles as a central heating unit by adding a radiator.
How to solder copper pipes.
The combi boiler doesn t require a bulky storage cylinder and can easily fit into most kitchens or storage cupboards making them the ideal system for houses with limited space.
For domestic hot water the mains supply is fed direct to the boiler.
Here s my 15 minute video on how to install and lay the pipes for a central heat system hot and cold water taps system.
This diagram illustrates how simple the heating system connected to a combi boiler is.
The sophisticated gas flow control system provides a high turndown ratio reducing energy waste and excessive combi boiler cycling and enhances temperature control for dhw.
Secondary plate heat exchanger.
An automatic bypass valve is fitted inside most combi boilers by the manufacturer these days.
In direct contrast open vent also called regular standard or conventional boilers and system boilers heat water that s stored in a tank.
Instead they heat water for central heating and domestic hot water as required.
A combination or combi boiler is both a high efficiency water heater and a central heating boiler in a single compact unit.
Benefits of combi boiler water heaters.
Central heating pipe layout diagram central heating pipe layout combi boiler central heating pipe layout bungalow central heating pipe layout open vent c.
No external pump no tanks no external expansion vessel no motorised valves and in many cases item 6 is not needed either.
So if it is lashings of hot water at a forceful pressure you are looking for then this is the system for you.
A primary heat exchanger.
Combi boilers heat water directly from the mains when you turn on a tap so you won t need a hot water storage cylinder or a cold water storage tank in the roof space.
They have two heat exchangers inside them.
Reliable hot water supply.
Our high efficiency 95 afue combi boilers can replace both a water heater and space heater in your home to save you space improve performance and help you save money on operating costs.
Combination boilers have no tanks at all.
For central heating 2.
Central heating system diagram with high pressure boiler this type of system operates at mains water pressure and uses a stored hot water system.
How a combi boiler works at least a modern combi boiler is.
Ncb e 6 1 heating 11 1 dhw.
Combi boilers are available in gas electricity or oil depending on your fuel preference.