Pocster Posted June 3, 2020 Share Posted June 3, 2020 About too look at installing this . Seems simple enough . Am I ok to run it straight through my timber frame wall and outside ? . This would be *much* easier than trying to get it to the internal drain . Any issues with this ? Link to comment Share on other sites More sharing options...
Onoff Posted June 3, 2020 Share Posted June 3, 2020 Cold bridging? 1 Link to comment Share on other sites More sharing options...
Mr Punter Posted June 3, 2020 Share Posted June 3, 2020 Yes. Running to a gutter or just outside is better than an internal foul drain as you do not need to rely on a water trap to stop smells getting in. It is only the condensate from indoor air, so not corrosive. 1 Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 2 minutes ago, Mr Punter said: Yes. Running to a gutter or just outside is better than an internal foul drain as you do not need to rely on a water trap to stop smells getting in. It is only the condensate from indoor air, so not corrosive. Super ! Makes an easy job easier ! ? Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 3 minutes ago, Onoff said: Cold bridging? Go away ? Link to comment Share on other sites More sharing options...
Onoff Posted June 3, 2020 Share Posted June 3, 2020 18 minutes ago, pocster said: Go away ? That's it, avoid the unpalatable & wait for an answer that zoots the way you want to go that involves less work. ? 2 Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 The parts supplied for the drain don’t fit ( always worries me when official parts don’t seem right ) Anyway this is the drain ( yes , the arrow is facing the right direction ? ) . Green X marks my drill hole to the outside world Link to comment Share on other sites More sharing options...
Onoff Posted June 3, 2020 Share Posted June 3, 2020 4 minutes ago, pocster said: The parts supplied for the drain don’t fit ( always worries me when official parts don’t seem right ) Anyway this is the drain ( yes , the arrow is facing the right direction ? ) . Green X marks my drill hole to the outside world I can see this going downhill. Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 8 minutes ago, Onoff said: I can see this going downhill. Oh dear !!! Link to comment Share on other sites More sharing options...
CC45 Posted June 3, 2020 Share Posted June 3, 2020 I'd make the pipe exiting the warmer area to the outside much bigger than 21.5mm - prob adapt it up to 40mm. Just in case it freezes as it hits the outside, I wouldn't want it backing up .... 1 Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 All done . I’ll just glue a 90 on the end outside . What’s the best way to patch round the hole ? Or is the answer white ct1 ? Link to comment Share on other sites More sharing options...
PeterW Posted June 3, 2020 Share Posted June 3, 2020 6 minutes ago, pocster said: All done . I’ll just glue a 90 on the end outside It is supposed to run to a drain..? That will run and stain the wall Link to comment Share on other sites More sharing options...
Bitpipe Posted June 3, 2020 Share Posted June 3, 2020 My MVHR condensate joins the gas boiler condensate in a chamber pump in basement plant room and is then delivered to foul drain at ground level. Airtightness and cold bridging aside, I know that external condensate pipes are prone to freezing in winter and this is a frequent cause of gas boiler failures. Easy to fix by warming the external pipe if you remember that this is the issue. Question is whether a MVHR would be similarly impacted. Link to comment Share on other sites More sharing options...
Pocster Posted June 3, 2020 Author Share Posted June 3, 2020 13 minutes ago, PeterW said: It is supposed to run to a drain..? That will run and stain the wall I’ll 90 it then pipe down the external wall Link to comment Share on other sites More sharing options...
Pete Posted June 4, 2020 Share Posted June 4, 2020 19 hours ago, CC45 said: I'd make the pipe exiting the warmer area to the outside much bigger than 21.5mm - prob adapt it up to 40mm. Just in case it freezes as it hits the outside, I wouldn't want it backing up .... We went on holiday to Egypt quite a few years ago and my daughter (her bathroom) left a tap just slightly open causing a drip and when we came home the 40mm pipe was completely frozen, it had frozen to -10 while we were away though! 1 Link to comment Share on other sites More sharing options...
Pocster Posted June 4, 2020 Author Share Posted June 4, 2020 External white lagging https://insulationandlagging.co.uk/Pipe-Insulation-Lagging/External-Pipe-Insulation_2/2m-Length-13mm-Wall-12mm-Bore-Eurobatex-R-Tough-White-Coated-Pipe-Insulation Link to comment Share on other sites More sharing options...
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