Should a combi boiler be on its own circuit?

A gas combi – boiler only requires electric to power the controls and is a small load so can be taken of a Ring main or Radial socket circuit is required although requires fusing down, it is preferable if possible to give the boiler its own dedicated circuit as a fault on the ring main would also lose all the heating …

Do boiler pipes need to be earthed?

There is no requirement for bonding a boiler; it is earthed. Supplementary bonding is not required in a kitchen. However, this is a favourite with plumbers because they do not understand.

Does a boiler circuit need RCD protection?

Boilers can be on a plug, but a FCU is usually used. If fitting a new circuit then it needs to be RCD protected and on its own circuit usually.

What circuit breaker do I need for a boiler?

If you are supplying the boiler with a dedicated radial. Then a 16 amp MCB on a 2.5mm T&E will be fine. Stick a 3 amp fuse in the fused connection unit and it will be OK…

What do you need to know about combi boiler installation?

Regardless of how you decide to go about the combi boiler installation, you will need a basic understanding of the regulations that must be met before the process is started.

Is the boiler always’on’in an IET?

The boiler is always ‘on’. It is, usually, controlled by the programmer, the position of the valves and the thermostats. If wired, they need L/N/E on permanently. These turn on the switched live to the boiler, which will then fire up.

Do you need L / N E on for a boiler?

If wired, they need L/N/E on permanently. These turn on the switched live to the boiler, which will then fire up. Once the room/cylinder has reached the set temperature, the stats will turn off the boiler, or close/open one of the valves, which will switch the boiler. So the ‘system’ needs a live/neutral/earth at all times to work properly.

Where are the external controls on a boiler?

FCU>Boiler>External Controls>Boiler. Most modern boilers have pump overrun to prevent overheating, external pump connection whilst not always an issue prevent the boiler from knowing its status. Martyn. The pump is in the airing cupboard, with the wiring centre, on the opposite side of the house.