"Set Square" wrote in message
...
In an earlier contribution to this discussion,
Jentrev96 wrote:

i would like to replace my conventional boiler with a combination
boiler has anyone got inst instructions ?please

Others have already commented on competence issues related to gas
fitting -
so I won't repeat all that.

However, I'm faced with the question "Why would anyone conceivably *want*
to
replace a conventional boiler with a combi?"

What a stupid question!! The advantages of combi boilers are well known.