Member Since: 21 Oct 2016
Location: kent
Posts: 14152
Hi
I emailed diesel heater and they replied
Hi Gary.
You can use max 2 meters. 2 meters exhaust pipe will cost you £80 including express 1-2 days delivery. Regards Ali
Emailed him back and asked what size is needed
6th Feb 2020 5:05 pm
Nc1989
Member Since: 28 Apr 2015
Location: Doncaster
Posts: 214
On the aftermarket heater applications and installations you’re allowed various lengths of exhaust depending on heater but the co2 setting must be altered to correct the co2 afterwards. Failure to correct the co2 setting can cause the burner to fail early.
With how fragile the Venturi burner is in the Thermo top V I really really wouldn’t do anything to change the application from how it left the factory but the choice is of course yours. If it was me I would leave it alone and buy a good carbon monoxide alarm (which you should use anyway).
I’m sure there was a recall / modification in the early days that automatically put the cabin heater into recirc when the fbh was runningPot Noodle Challenge Winner 2011
I refuse to have a battle of wits with an unarmed person
6th Feb 2020 6:56 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14152
gstuart wrote:
Hi
I emailed diesel heater and they replied
Hi Gary.
You can use max 2 meters. 2 meters exhaust pipe will cost you £80 including express 1-2 days delivery. Regards Ali
Emailed him back and asked what size is needed
Got a follow on email ref the size
Gary. You can insulate the exhaust pipe. It is £30 for meters. You don’t need to buy larger size. You will get 26mm. Regards Ali.
Regards
6th Feb 2020 10:08 pm
Class—
Member Since: 25 Jan 2020
Location: UK
Posts: 27
Hi Folks,
This sounds interesting but unfortunately I have a sore neck tonight which means my head is sore which means I’ve not read all this post. So, please, forgive me if my ramblings are unwanted. However I noticed that I was getting a lot of the fumes coming in from the webasto. I believe my problem is that there is a leak at the silencer (I assume the box inline with the exhaust is a silencer?) both ends of the silencer to be exact. I was going to ask you guys if it was a known issue and best way to fix it. I only noticed this on a cold morning when I started her up and popped the bonnet and watched the webasto for 5 mins.
Thanks
6th Feb 2020 10:33 pm
Harry365
Member Since: 25 Aug 2018
Location: Lincoln
Posts: 386
Gary, really appreciate your efforts! I've been thinking about where to extend it to and after spending sometime under the body, I've realised that unless I take it all the way to the back, I'm probably gonna just have issues with it coming through a window lol. Now my thoughts are to just extend it out of the side of the wheel arch or somewhere similar which would be a much shorter extension and would allow the smoke to go straight into the open rather than linger and disperse in the engine bay.
I already have a carbon monoxide alarm, indeed a very sensible precaution. It's never gone off or even registered a reading below the alarm trigger. It's more the smell than anything, and I guess the particles to some extent.
I'll see what I can come up with for a side exhaust.
Class, a hole in the silencer should be fairly obvious. You could put your thumb over the exhaust very briefly within the first min or so of running to see if it makes the hole location more obvious or indeed confirm its existence. The smoke does rise up through the engine bay though so it could just be that. If you find it is excessively smoky for longer than you'd expect, it could be the fuel supply is poor. This could be anything from a blocked pipe to a faulty pump. Process of elimination. Don't spend any money until you're sure.
6th Feb 2020 10:54 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14152
Hi
Ur very welcome, also think it was because I was a heating engineer I found it very interesting
Good to hear you’ve already got a carbon monoxide alarm, plus indeed ensuring the FBH is serviced-regularly to prevent it from producing carbon monoxide / also keeping fumes , smell away from entering the cabin
Would be really nice with some more piccies as ur project progresses plse , as we all like a project
Also wonder if its worth doing a cabin smoke test, so at least then ur see if there’s any weak points
7th Feb 2020 7:22 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14152
Hi harry
Got an email from webasto and wished to pass it on to ur goodself
Quote
You can extend up to a maximum of 5m as long as you have no silencer , 3m with a silencer
Last edited by gstuart on 10th Feb 2020 4:00 pm. Edited 4 times in total
8th Feb 2020 7:33 pm
Harry365
Member Since: 25 Aug 2018
Location: Lincoln
Posts: 386
Gary you legend. 5m is great news; straight out the back. Thank you again for your efforts. Pics will follow. Just wire brushing the chassis at the moment
8th Feb 2020 9:29 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 14152
Shucks ur make me blush
Glad it helped mate and indeed gives u far more scope with the 5 x metres , plus hearing from webasto themselves
That will be nice , yes plse for the pics Of the mods
As yes, a labour intensive job, been there done that
Kind Regards
9th Feb 2020 12:04 am
aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
You need to make sure the flexible pipe has a smooth internal bore both eberspacher and webasto sell it.
You will also need to remove the silencer and then insulate the pipe otherwise the smoke will cool and leave soot deposits that will quickly build up over time and block the pipe.
9th Feb 2020 8:32 am
Motolab
Member Since: 18 Oct 2019
Location: Sleen
Posts: 1820
+1.
And.. what webasto does not tell you, that 5 meters work in theory AND on a ship/boat etc. Where the FBH’s run for hours....or at least long runs... on cars AND also configured as auxiliary heater (sometimes running for only 10 minutes or just a few more) a horizontal and long exhaust pipe is waiting for trouble.... IMHO....
So...be aware .....Best regards
Harold
Always looking for Pre '55's & Pre war British Motorcycles! knowing or having one for sale? PM please. I visit the UK 6 times a year
Ps. I edit my texts quite often, english is not my native language, so I will edit My “typo’s” etc.
9th Feb 2020 3:56 pm
dgardel
Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025
aja4x4 wrote:
You need to make sure the flexible pipe has a smooth internal bore both eberspacher and webasto sell it.
You will also need to remove the silencer and then insulate the pipe otherwise the smoke will cool and leave soot deposits that will quickly build up over time and block the pipe.
Motolab wrote:
+1.
And.. what webasto does not tell you, that 5 meters work in theory AND on a ship/boat etc. Where the FBH’s run for hours....or at least long runs... on cars AND also configured as auxiliary heater (sometimes running for only 10 minutes or just a few more) a horizontal and long exhaust pipe is waiting for trouble.... IMHO....
Member Since: 16 Jan 2020
Location: East/West Sussex Coast Borders
Posts: 1200
Been using these heaters for over 30 years in trucks, and the simple rule is to have the exhaust pipe route always going lower than the burner or silencer. Any water will then run down the pipe. If the silencer is as close to the heater as possible, water build up in here is minimal.2011 Discovery 4 Commercial SDV6 (Gone)
2010 RRS TDV8 (Gone)
1980 OBLIC 4.0ltr Range Rover (went a long time ago)
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