"Dave Plowman (News)" wrote in message
...
In article
,
Tim+ wrote:
In any kind of structure there's still the risk of gas buildup if
improperly
installed.

Hardly beyond the wit of man to design a lightweight well ventilated
weather-proof enclosure that would avoid the build up of any gas if
required.

Since you are obviously an expert on all things boilers, why the question
in the first place?

He was asking about the LAW, stupid.