Propex exhaust pipe do they get hot? /timer

Post by **A KIRK** » 28 Oct 2008, 19:36

Might be a silly question, but I'm in the middle of fitting a propex, and was wondering does the exhaust pipe get hot, I have a 1800 X1.

So far I've only mounted it in place, so not had a chance to test it yet.

Another thing does anyone have a link to a timer that might work with the propex.

Thanks

Andrew

Post by **VWCamperfan** » 28 Oct 2008, 19:41

Yep... They get fookin 'ot! I don't need to say 'keep clear of anything that can ignite'!

Any timer that makes and breaks the live wire will be ok. Think there was a thread about it a year or so ago. Have a search, it may well pop up.

Had a looksie, try these...

https://club8090.co.uk/forum/viewtopic.p ... opex+timer
https://club8090.co.uk/forum/viewtopic.p ... opex+timer
https://club8090.co.uk/forum/viewtopic.p ... opex+timer

Post by **A KIRK** » 28 Oct 2008, 20:09

Cheers for that, do you think it would be possible to maybe wrap the exhaust in something similar to car exhaust wrap?

Cheers for the links

Andrew

Post by **Mocki** » 28 Oct 2008, 20:20

why?
it should be outside the van, through the floor

Post by **jamesc76** » 28 Oct 2008, 20:24

Where have you run the exhaust????

Post by **A KIRK** » 28 Oct 2008, 21:08

Well thats what I thought, however the exhaust on mine is on the side, and I was under the impression that the units should be laid flat and not upright.

[img:640:480]http://i527.photobucket.com/albums/cc35 ... CF0507.jpg[/img]

This is a pic of the unit, as you can see if I was to put the exhaust in the floor, then it would be upright and upside down, if that makes any sense.

Its not to late for me to change how I was going to fit it, as I have only drilled one 45mm hole so that could be used as the inlet

Post by **Plasticman** » 28 Oct 2008, 23:12

Hi Andy, s'far as I am aware they are not fussy about being laid flat as long as the exhaust passes direct through steel and to the outside, there are no cut offs that would sense inversion(as in an accident) and shut them down.
as has been said the ex gets HOT and I woiuldnt like to have it inside anywhere.
If in any further doubt give Pro'p a ring
Mike

Post by **Mr Bean** » 29 Oct 2008, 09:11

metalmick8y wrote:Hi Andy, s'far as I am aware they are not fussy about being laid flat as long as the exhaust passes direct through steel and to the outside, there are no cut offs that would sense inversion(as in an accident) and shut them down.
as has been said the ex gets HOT and I woiuldnt like to have it inside anywhere.
If in any further doubt give Pro'p a ring
Mike

Yes I agree. The idea situation which I think reflects the design intent, is to have the heater fixed on the interior side of the panel - in my T25 the sloping panel at the front of the engine - with the exhaust and inlet stubs poking through a suitably sized hole. A foot or so of flexible/convoluted ally tubing is then jubilee clipped on and without touching anything else is clipped to a convenient place on the chassis or bodywork. To preserve the failsafe nature of the design the combustion intake should be treated the same but taking a diverging route so as to prevent ingestion of exhaust gasses which while not dangerous will reduce efficiency. The interior ducting is less demanding but you need to plan the route the circulating air will take so as to take best advantage. The combustion system can then only communicate with the ouside world and the warm (hot!) air system can only communicate with the interior of the van. Barring corrosion or mechanical damage both systems are completely isolated and perfectly safe. Of course - and being almost silly - if you had it running and passed over a pool of say gas or petrol the vapours could be ingested and cause a fire! Talk to Propex and they will send you the bumph.
Cheers
Smiffy
Smiffy

Post by **ermie571** » 29 Oct 2008, 09:17

Got one very similar....just installing at the moment

Oh - so it can go flat....that will help enormously..exhaust straight out the hole in the floor....rather than the big u shape I thought it would need!

Intake will be through old fridge vent.

Thanks chaps!

Em
x

Post by **A KIRK** » 29 Oct 2008, 09:46

thanks everyone, so from reading this I should mount the unit upside down, so the exhuast can go through the floor.

Hm this is turning into a pain in the rear, as there are no mounting brackets etc to mount it the way thats been suggested, only brackets to mount it laying flat, unless I board up part of the space to that I have something to mount it upright against.

hm why do we start these things, thinking its only a couple of hours work, and it takes for ever

Thanks

Andrew

Post by **Mocki** » 29 Oct 2008, 09:57

before any of you go any further , get in touch with propex (apparently they are very helpfull), and get the correct fitting instructions for this heater. I seem to think it maybe the marine type, and iirc someone has one here that is mounted with the zorst on the side, and down and out..

methinks this wasnt the model either me nor James thought you wer talking about.............

Post by **jamesc76** » 29 Oct 2008, 10:10

That's the same as mine, mounted on its side exhaust straight out the bottom and through the floor never had a problem at all with it!

Post by **mininut** » 29 Oct 2008, 10:17

A KIRK wrote:thanks everyone, so from reading this I should mount the unit upside down, so the exhuast can go through the floor.

Mine is mounted that way, (as it was when it left the Autohomes factory), it had two grotty straps that went over the heater and screwed down to the floor. I made some nice new stainless ones as replacements. The exhaust goes through the floor and travels towards the outside of the van where it is attached to the sill with a bracket.
I presume this is so you don't get a build up of fumes under your van

Like James said, no probs at all.

Post by **ermie571** » 29 Oct 2008, 11:29

As per Mocki's advice

Model 1600 wx1 (quite old me thinks)

Propex say it can work quite happily upside down, with exhaust going straight out the floor!!

Addtional info: if the panel on the side of the heater where the LED control lights are says 138 or 129 it will work with an electronic thermostat, if its an older one it won't.

Maybe of use to someone.

Well, that's me moving the heater then....

Em
x

Post by **A KIRK** » 29 Oct 2008, 13:10

Right I spoke to Propex this morning, and guy said it was ok to mount it flat like I have and have the exhuast pipe then exit the through the floor.

The advice I was give was to keep the internal length of exhuast in the van as short as possible, and obviously make sure it wasn't going to touch anything as it will get hot. He simply said seal around it with some heat resistant sealant.

So I shall mount it flat and keep an eye on things