"GregB" wrote in message
om...

I recently asked about replacing a back boiler on here and the help
given was very useful. Unfortunately due to some stupidity on our part
I need some advice on fitting a flue extension.

Our new boiler is a Worcester Greenstar HE 28 Condensing System type
which we have had installed in our basement. The standard horizontal
flue has been fitted which goes out the back of the house near to a
shared back path. Out neighbours have already commented on the
excessive steam being produced. We have decided it will be necessary
to raise the flue outlet so I have some questions.

1. Can the Worcester extension parts be used externally? This is the
most important bit as extending internally could be very problematic

Extending externally is fine. If the gasses cool and condense even further
then they will just flow back into the boiler. No problem.

2. If No.1 is possible can the vertical outlet be used on the side
wall of the house? The diagrams on the product information show this
part on roofs but it would be helpful if this can be used on the side
wall near to the back window.

Best take it up over the eves. But contact Worcester tech dept about it.
get your Q formulated right before you ring them to make sure you get the
right answer. The problem with terminating vertically up a wall is that you
will make it damp.

3. If 1 & 2 are Ok to do my rough measurements indicate that we will
need the following piping to get the required distance up the house
- Bend connector, 1 metre horizontal extension, bend connector,
1-meter vertical extension, Vertical outlet unit.

If none of the above is possible then we'll probably have to resite
the boiler in the kitchen which, although possible will be a real pain
and will completely cock up the plans for our new kitchen

Just take the flue pipe up as high as possible over the eves. If this
visually makes the house look crap, then re-sight the boiler.