"David" wrote in message
om...
Hi

I have a natural gas condensing boiler (Ideal Minimiser SE80).

I have the boiler thermostat set near
to its minimum to encourage
condensing mode.

That is good, yet Ideal say run the boiler at 80C, but ignore this. I'm
sure this so condensate is not produced, as too much in the heat exchanger,
if not serviced correctly, or on time, can cause a pool in there also. If
the flame detection electrodes have some crud on them, they will get wet due
to condensation, then the burner will lock out. All you do is turn off the
burner at the boiler and start again. Second time it usually works because
the fan dies out the crud. This usually means the boiler needs a service
and give the heat exchanger a "good" clean. They overcome this by a new
board that tries 3 or 4 time to light the burner before giving up. I have
the new updated board and all is fine.

With these boilers you "must" clean them once a year. And you must clean
the fins inside the heat exchanger using a plastic tie-wrap to clear the
space between the fins, especially at the bottom near the round burner.
This is a little time consuming, but worth it. Best buy a small brush to
get inside the round heat excahnger (sqaure onnthe outside). When replacing
the burner make sure you get the large O ring fitted properly otherwise
condensate water will leak onto the electronic board below.

I have a Minimizer. A good simple and reliable condensing boiler, but you
have to know its little points.

The boiler produces a realy big plume of water vapour but I have never
noticed any water coming out of the condensate drain pipe.

This boiler has an upwards burner. It is not v good at collecting
condensate and putting it in the drain, so most is left in the gasses. The
big plume can be very thick. Have the flue through a chimney and effect is
very nice.

There is, however, a constant drip from the tip of the flue.

Is this normal?

No. The flue is not slanting back to the boiler. Get it fixed or the flue
will corrode. No wonder little is going into the drain.