How did you secure your Eberspächer exhaust

ShipsWoofy

ShipsWoofy

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I think I am getting some seepage where my exhaust is fitted to the heater and/or the through-hull.

I am using 25mm genuine flexi Eberspächer pipe and s/s jubilee clips. I have tightened down as much as I dare but am not entirely convinced I have managed 100% seal.

I am not comfortable using gun-gum as it is pretty permanent, plus if I apply to the Eberspächer stub; some gun-gum will most certainly enter the pipe causing a restriction, it is only 25mm to start with.

Why do I think this, because every so often I get a whiff of exhaust (ignoring wind blowing it back on board). It is not strong, hence I suggest a weep rather than leak.

The jubilee clips do not seem to compress the pipe at all, is there a stronger more suitable method to clamp the flexi pipe onto the fittings?

Thank you in advance...
 
How about using fire cement? Used to seal flues on some domestic boilers. Sets rock hard, but fragile so it'll break away when you want it to.

Another possibility is that you've got a fracture in the flue pipe. That bendy s/s stuff can fail. In the last boat, (sold yipee!) the flue tube was knackered.
 
I bought the pipe from an Eberspächer dealer who did not offer these, just sold me some jubilee clamps. Any links for online purchase?

Certain it is not leaking pipe, I have just covered it in exhaust tape, which should cover up any tiny leaks within the pipe as it sets rock hard. I will not rule it out, but there is very little bend in the pipe due to location and it is only a couple of years old, I am sure it is the seal.
 
How old is the heater?

How old is your heater? Might it be possible that corrosion is affecting the heat exchanger, allowing combustion products to enter the circulated hot air? Could be worth checking if it's more than, say, 10 years old.
 
Re: How old is the heater?

It is late 90's I think, but ex-BT so has only had a couple of years in a marine environment. It was nearly new when I bought it, i.e. hardly used, BT do not like letting the lads get warm so fit timers to the heaters.

It looks new with no outwardly visible signs of corrosion.

Before I start finding jobs I would like to sort out the obvious, most likely first. Also read cheapest in that sentence.

Do these clamps have a specific name, something I can search on, any thoughts.

I appreciate the advice by the way, I just don't believe that this is a serious problem, other than this the heater is 100% (touch wood).
 
Re: How old is the heater?

[ QUOTE ]
I appreciate the advice by the way, I just don't believe that this is a serious problem.......

[/ QUOTE ]
If the heat exchanger is allowing combustion products to enter the boat, you perhaps do have a serious problem.
 
Re: How old is the heater?

Woofy.... look on eBay shop for seller 'Eberbasto'. He sells all bits for blown air heating, stocks the correct exhaust clamps, and is a reliable trader... also has a phone number on his eBay site for mail order if you prefer that route...
 
The exhaust pipe supplied as original with an eber marine kit has specific welded couplers at each end which have a smooth internal bore and make a good gas-tight connection (at least my exhaust pipe c.1987 was like that).

I have since had to replace the exhaust due to corrosion and have used plain ended pipe like you. I think you may have to use gum-gum type sealant to achieve a satisfactory seal due to the internal nature of the pipe.

Vic
 
Not having seen the fitting you refer to so don't know if this will apply, but for a flexible sealing agent you could use red RTV silicone ,[a high temperature version of bath sealer] I have used this on my plumbers recommendation on my Rayburn flue -which gets extremely hot as you might imagine and it is fine. Is available from plumbers merchants.
 
They look the business, but ouch!


24mm Exhaust Clamp (26) - EC2



Price: £10.23

edit...

Doh! it's u-bolts isn't it, that's what I need to buy. Brain starting to wake up.
 
Re: How old is the heater?

I bought my through hull and closing vent from him, I will have a look at his EBay shop.

I also agree, he is a very good chap to buy from, always wondered who he actually is, I have a suspicion he posts on here.
 
[ QUOTE ]
The exhaust pipe supplied as original with an eber marine kit has specific welded couplers at each end which have a smooth internal bore and make a good gas-tight connection (at least my exhaust pipe c.1987 was like that).

[/ QUOTE ]My setup also has couplers similar to those you describe and they are shown in the installation manual as being part of the "universal installation kit". At least to one connecting to the heater is.

On my installation the flexi exhaust is "sealed" to the coupler with "Fire-Gum" and clamped using the bolt type clamp then the fittings are clamped to the heater exhaust and the skin fitting without and sealer.

This arrangement seems to work well.
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Re: How old is the heater?

These are the clamps which come with the kit, much more substantial than jubilees. You can get them from Krueger Marine in Portsmouth or New Milton

New_Eber.jpg
 
Try this?

Hi

Just to add my thoughts - I have just had my Webasto exhaust replaced and it came with 'proper' clamps with a nut and bolt on them.

If you want a reasonably priced (i.e. non-marine) supplier, you could try your local Pirtek branch. Just give them the dimensions of the pipe.

Cheers
 
Apologies for reviving an old thread.

I recently serviced the Eberspacher D2 in our boat. When I removed the heater, the old exhaust fell to pieces so I replaced it with a new piece I bought from one of the Eberspacher stores on eBay.
Unfortunately, it would appear the exhaust is leaking and I'm pretty certain exhaust fumes are ending up in the cabin. The exhaust pipe doesn't have smooth ends and even though I'm using the proper clamps I'm guessing it's simply not creating an airtight seal.
There's a few suggestions on here, but I wonder if anyone could provide an up to date solution?

Cheers.
 
Proper bolt type exhaust clamps of the correct size and exhaust assembly paste (not firegum it's too thick) and you will have no problem. The exhaust assembly paste also lubricates the joint so its easier to get on and seals within a few moments of sparking the unit up. Make sure you cut the pipe ends square with no raggedly edges and fully on the exhaust spigots.

Edited to add that these stainless clamps are really good and only between £3 & £4 each but oly in 22mm & 28mm, but they are only Stainless Mikalor clamps available at around the same price in more sizes if you google.

http://www.mikuniheating.com/Results.cfm?PageNum_Results=2&category=27&secondary=32
 
Last edited:
ShipsWoofy said:
I am using 25mm genuine flexi Eberspächer pipe and s/s jubilee clips. I have tightened down as much as I dare but am not entirely convinced I have managed 100% seal.
Click to expand...

I think the problem could be with the pipe size. Eberspacher exhaust outlets and skin fittings are 24 mm I believe.
 
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