They house two heat exchangers.
Combination boiler combi boiler central heating system diagram.
Mike the boilerman your gas safe registered boiler and central heating.
For central heating 2.
Central heating diagram mike the boilerman.
The cold feed enters the boiler is heated in the heat exchanger and then passes out of the domestic hot water outlets when a hot tap is opened.
There is one small consideration.
No external pump no tanks no external expansion vessel no motorised valves and in many cases item 6 is not needed either.
Combi system this diagram illustrates how simple the heating system connected to a combi boiler is.
How a combi boiler system works.
Should anything happen to the boiler breakdown you would be left with no heating and hot water.
Fully pumped one pipe gravity combi etc.
Combi is short for combination.
A secondary plate heat exchanger.
Secondary plate heat exchanger.
How a combi boiler works at least a modern combi boiler is.
Central heating diagrams showing pipework layouts for the various types of heating system.
The diagram to the right shows how a combi boiler is usually installed.
A combi boiler system combines central heating and hot water within the same compact unit.
A primary heat exchanger.
For central heating 2.
So in places where space and hot water requirements are limited such as flats these can be very popular systems.
A primary heat exchanger.
An automatic bypass valve is fitted inside most combi boilers by the manufacturer these days.