My mate installed a dehunifier in his airing cupboard, vented to landing, as
he suffered horrendous condensation upstairs due to having stairs enter
directly into the lounge.

He initially thought I will empty as necessary, but it soon filled so set
about piping it. In the end he managed to get a 19mm overflow sized pipe
through rear of airing cuboard through narrow roof space and empties out
into a gutter. Worked well.

However the biggest problem was the noise keeping everyone awake. Put it on
a time clock and condensation returned.

However he replaced it with an Amber Dry Absorption dehumidifier (about
£200) and it is silent as well as using considerably less electricity I
think is available with a pump so you can feed the waste water through a
trap made out of 19mm pipe thus preventing cold outside are entering via the
waste pipe.

Anyway doesn't need it now, as he had all the house windows replaced, all
now with trickle vents and now doesn't suffer any condensation at all.

ian

"Lobster" wrote in message
...
As my regular readers (?!) will know, recently I decided to set up the
airing cupboard as a laundry-drying cupboard by installing a dehumidifier
in there.

It only arrived this morning so it's still in its 24-hr limbo before I'm
allowed to fire it up, or apparently the compressor will explode. Or
something.

Anyway, am a bit disapppointed in the size of the water reservoir, which
looks like it will take about half a cupful of water. The machine was
advertised as a "10-litre" model which sounded plenty - however, if I'd
stopped to think about it, I'd have realised that's a couple of gallons
which is a larger volume than occupied by the dehumidifier itself. Duh.
Apparently "10-litre" means it will suck 10 litres of water per day out of
the atmosphere. Of course.

Getting to the point now... Since this model has the facility for
continuous draining, it would be nice to make use of that, wouldn't it?
Now, right next to the dehumdifier is my unvented HW cylinder, complete
with its safety valve/tundish arrangement which connects to the exterior,
across the landing, via a 22mm copper piper. So, I'm just wondering if
there is any way I'd be able to make use of this without breaking regs or
compromising the safety of the HW cylinder?

To do so, I'd have to bring the existing tundish down from about 1m high
to 30 cm off the floor (is that in itself allowed?), and add a tee into
the 22mm copper below the tundish, connected to a short vertical run into
which the 0.5" plastic drain hose from the dehumidifier would be tucked.
Diagram below.

So, would this be allowed? It would be much easier than ripping up the
landing carpet/floor to run a dedicated drain...

David




overflow from cylinder ________
| | SIDE |
| | VIEW |
x existing tundish position |________|
|
|
|
|
| drain point for
| dehumidifier
x proposed new tundish |
| |
| |
|---------------------------------
|
|
|
| common drain to exterior.