Combi Condensate into guttering
John
Proposal is to lead a pipe out of roofspace where boiler will be located and
into roof gutter. Alternative is to pipe it into downpipe - but less
attractive cosmetically.
John
No problem at all. The CORGI guy who installed our combi in the loft did
this and the CORGI/Gas Safe guys who've done the annual service have no
problem with it either.
Andrew Gabriel
Issue is likely to be it freezing during a cold spell, particularly
the water in the gutter (which being horizontally exposed to clear
sky in winter, is very likely to freeze), and is also going to get
blocked with snow when you've got 6" on your roof and gutters.
I recall someone mentioning on here years ago when a 4' icicle
broke free from their condensate drain, and came smashing through
the conservatory roof.
Are their not any wash basins upstairs (or other things with
runaways) upstairs with internal drains which you could couple to
from the loft?
--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]
Luke
wrote:
> In article <M%w1o.233172$vB5.225854@hurricane>,
I have to plumb in a condensate drain and PRV piping in a couple of
weeks' time for my new boiler, which I am putting in the loft.
I was planning to plumb the condensate drain straight into a uPVC soil
stack via a new boss. For the PRV, I was going to do the classic 15mm
pipe through the wall turned back in on itself.
Both of these methods my involve taking a short bit of piping down
through the bathroom ceiling (from the loft) then outside through the
house wall. I assume there is no problem with having the PRV pipe vent
so high up, as long as there are no doorways below?
No problem with this is there?
Otherwise, surely loads of tower blocks all with PRVs high up on the
wall would be against regs. Running a 15mm all the way down the house
would be ugly enough for me to rethink siting the boiler in the loft!
Luke
John
> On Jul 21, 11:22 am, and...@cucumber.demon.co.uk (Andrew Gabriel)
> wrote:
>> In article <M%w1o.233172$vB5.225854@hurricane>,
>> "John" <Who90nos...@ntlworld.com> writes:
>>
>>> Is this legal or not? Good idea or not?
>>
>>> Proposal is to lead a pipe out of roofspace where boiler will be
>>> located and into roof gutter. Alternative is to pipe it into
>>> downpipe - but less attractive cosmetically.
>>
>> Issue is likely to be it freezing during a cold spell, particularly
>> the water in the gutter (which being horizontally exposed to clear
>> sky in winter, is very likely to freeze), and is also going to get
>> blocked with snow when you've got 6" on your roof and gutters.
>>
>> I recall someone mentioning on here years ago when a 4' icicle
>> broke free from their condensate drain, and came smashing through
>> the conservatory roof.
Good advice Andrew and certainly something for the OP to think about.
However, all I can say is that we've just had the coldest and most prolonged
snow/ice christmas/new year for about 30 years and we suffered no such
problems. Plenty snow and ice on the roof but the condensate drained away as
it should.
> I have to plumb in a condensate drain and PRV piping in a couple of
> weeks' time for my new boiler, which I am putting in the loft.
>
> I was planning to plumb the condensate drain straight into a uPVC soil
> stack via a new boss. For the PRV, I was going to do the classic 15mm
> pipe through the wall turned back in on itself.
>
> Both of these methods my involve taking a short bit of piping down
> through the bathroom ceiling (from the loft) then outside through the
> house wall. I assume there is no problem with having the PRV pipe vent
> so high up, as long as there are no doorways below?
Again, like my reply to the OP, no problem with the PRV through the wall and
turned back on itself, or with the condensate drain through the roof and
into the gutter.
Andrew Gabriel
"John" <no...@wanted.com> writes:
>
> Good advice Andrew and certainly something for the OP to think about.
> However, all I can say is that we've just had the coldest and most prolonged
> snow/ice christmas/new year for about 30 years and we suffered no such
> problems. Plenty snow and ice on the roof but the condensate drained away as
> it should.
Lots of people had condensing boilers fail last winter,
for the reason of condensate drains freezing. In many
cases, this was due to installers not following the
instructions (e.g. using 22mm pipework outside), but in
some cases it happened in spite of following instructions,
and the industry has been reviewing the rules for condensate
drains as a consequence of this.
ARWadsworth
"Andrew Gabriel" <and...@cucumber.demon.co.uk> wrote in message
news:i26tvn$cnh$1...@news.eternal-september.org...
I even removed an iceplug from a fall pipe that had nearly frozen solid
(44mm?).
One of my jobs this summer is to move a neighbours condensate from the
gutter, re-run it internally and plumb it into the bath waste. It was not
much fun in the snow trying to melt the condensate pipe in the gutter.
Almost certainly the biggest problem was caused by the snow in the gutter
restricting the condensate pipe. I took a lot of phonecalls from people over
the cold spell with "broken" boilers. They were all frozen condensates.
Cheers
Adam
John
news:RaD1o.201330$9c1.68647@hurricane...
I will see what happens this winter. I did consider options inside the house
and they were all messy to run. The other option was to tee it into the
rainwater downpipe.
Mike Barnes
>One of my jobs this summer is to move a neighbours condensate from the
>gutter, re-run it internally and plumb it into the bath waste. It was not
>much fun in the snow trying to melt the condensate pipe in the gutter.
>Almost certainly the biggest problem was caused by the snow in the gutter
>restricting the condensate pipe. I took a lot of phonecalls from people over
>the cold spell with "broken" boilers. They were all frozen condensates.
I've no experience of any of this but ISTM that you might be able to
prevent freeze-ups by installing a fat pipe projecting only an inch or
so outside the wall; and then position a funnel underneath to collect
the water and route it to a drain. Is there any reason why not?
--
Mike Barnes
js.b1
float?
Thereby it pumps out a "bulk" of water which will be warm house
temperature every so often.
harry
The condense is acidic & should not go through metallic pipes if you
have any.
Also should not come in contact with brick/concrete work
Andrew Gabriel
Not in the loft it won't.
Indeed, it probably represents yet another potential point of failure,
one such failure mode being that it freezes.
Fredxx
> In article
> <c7cb7669-7fd3-438b...@r27g2000yqb.googlegroups.com>,
> "js.b1" <js...@ntlworld.com> writes:
>> What is wrong with a condensate reservoir & pump actuated by a simple
>> float?
>> Thereby it pumps out a "bulk" of water which will be warm house
>> temperature every so often.
>
> Not in the loft it won't.
> Indeed, it probably represents yet another potential point of failure,
> one such failure mode being that it freezes.
>
Shouldn't there be a frost stat in the loft to prevent just that? Perhaps
one very good reason why you shouldn't have a boiler in an unheated area.
djc
Most have an arrangement that does that based on a syphon. It mitigates
the effect but fails in a long cold spell such as the past winter. Each
'flush' builds up a film of ice until the pipe is blocked.
--
djc
Chris Hammond
You cannot discharge condense into gutters because it is a acidic
You cannot discharge condense into gutters because it is acidic and birds
drink from gutters.gas safe inspector told me this on an inspection.
--
for full context, visit https://www.homeownershub.com/uk-diy/combi-condensate-into-guttering-645128-.htm
newshound
> replying to John, Chris Hammond wrote:
> You cannot discharge condense into gutters because it is a acidic
>
>
>
>
>
> You cannot discharge condense into gutters because it is acidic and birds
> drink from gutters.gas safe inspector told me this on an inspection.
>
>
>
>
>
>
>
birds as it would be to you.
Jeff Layman
first floor. About a dozen years ago, one winter my neighbour's heating
failed. He said the boiler would start working, but after a few minutes
would stop. I told him why - I could see the installer had put the
outlet of the condensate pipe right down at the bottom of the gutter
above the garage. After a heavy frost, the water in the gutter froze, so
the condensate had nowhere to go. It was solved by cutting a few cm off
the end of the pipe so it remained above the water level.
--
Jeff
Clive Arthur
<snip>
> It's not *very* acidic though, and presumably the taste is as obvious to
> birds as it would be to you.
If you don't want squirrels pinching the bird food, sprinkle it with
chilli powder.
--
Cheers
Clive
John
news:r4v8ke$rjg$1...@dont-email.me:
runs down into a tub in the airing cupboard. In the event of a freeze the
water runs into the bucket - it has only happened twice.
Roger Hayter
would never have standing water in it.
--
Roger Hayter
newshound
into a gutter, just above the downpipe. When it freezes, a plug of ice
slides out until it hits the side of the gutter, at which point it all
freezes up. Not this winter though!
newshound
formic acid. But maybe the acidity doesn't harm them. Come to that, I
suspect that we could drink condensate water without coming to harm.
george
There was no other way possible, I asked an ideal
Engineer if this was ok he agreed with me that I had
No other choice .
--
For full context, visit https://www.homeownershub.com/uk-diy/combi-condensate-into-guttering-645128-.htm
Tricky Dicky
I noticed that several installers passed the 19mm pipe through the wall and into a 40mm pipe as near as possible to the emerging pipe. I did something similar within the garage running 40mm pipe from as near the boiler as practicably possible to the gully and never again had a freezing problem. Some ice did form on the end of the pie on bad days as I could not extend it into water as the gully did not have a water trap but never again did it completely block and shut the boiler down.
Richard
williamwright
> Perhaps the installer naively assumed that a properly fitted gutter
> would never have standing water in it.
properly fitted gutter.'
Bill
PeterC
goes through the wall and immediately down at ~40 deg. As the condensate is
warm and goes in pulses, not a trickle, freezing is unlikely.
Been OK for just over 23 years.
--
Peter.
The gods will stay away
whilst religions hold sway
Davidm
<34891b02a3ebf218...@example.com> wrote:
>One job I had to discharge it into a gutter because
>There was no other way possible, I asked an ideal
>Engineer if this was ok he agreed with me that I had
>No other choice .
fine for a few years until a heavy snowfall one winter. Gutter filled
with snow, which then froze solid, as did the end of the condensate
pipe.
Ended up fitting a condensate pump near the boiler and ran polythene
tubing (insulated) from its output, up into the loft, across to the
soil pipe and discharged into that. Still working fine 10 years later.