Eberspacher heating - a silly mistake

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Pinnacle

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Our heater is located under the swim platform. Getting to it is a real pain, but its location also means that the exhaust has to run up through a deep cockpit locker on its way to the skin fitting high up on the transom. We have had a couple of instances where fenders stored in the locker have been ruined by being melted when leaning against the exhaust. The standard stainless exhauset pipe is covered in white lagging and is run inside a 50mm dia section of the normal black air ducting. However, as noted above, the outside of the black duct still gets too hot for the fenders.

So, in an effort to overcome this, I purchased ( at not inconsiderable expense ) some sections of the MaxiTherm duct insulation made by Eberspacher. It was easy to fit as its simply wrapped around the duct and then held in place with stainless pop fasteners. Job done in about 15 mins. All well, so I thought...........

About 10 mins later, No 2 son asked what was burning. A quick inspection showed that the insulation was being melted!.

Turned off the heater and let it cool. I have removed as much as I can of the remains of the insulation, but quite a bit is still left stuck to the black duct. Next time we use the heater, it will, of course, melt further and stink the boat out ( or maybe set itself on fire? ).

So, my simple plan looks like it will cost me ££ss to have the whole exhaust replaced. ( I think it makes sense to replace the stainless pipe and its lagging at the same time as the engineer has it all in bits and is replacing the duct. )

I feel such an idiot. :o:o:o

Boats.....don'tcha just love 'em!
 
Pinnacle said:
Our heater is located under the swim platform. Getting to it is a real pain, but its location also means that the exhaust has to run up through a deep cockpit locker on its way to the skin fitting high up on the transom. We have had a couple of instances where fenders stored in the locker have been ruined by being melted when leaning against the exhaust. The standard stainless exhauset pipe is covered in white lagging and is run inside a 50mm dia section of the normal black air ducting. However, as noted above, the outside of the black duct still gets too hot for the fenders.

So, in an effort to overcome this, I purchased ( at not inconsiderable expense ) some sections of the MaxiTherm duct insulation made by Eberspacher. It was easy to fit as its simply wrapped around the duct and then held in place with stainless pop fasteners. Job done in about 15 mins. All well, so I thought...........

About 10 mins later, No 2 son asked what was burning. A quick inspection showed that the insulation was being melted!.

Turned off the heater and let it cool. I have removed as much as I can of the remains of the insulation, but quite a bit is still left stuck to the black duct. Next time we use the heater, it will, of course, melt further and stink the boat out ( or maybe set itself on fire? ).

So, my simple plan looks like it will cost me ££ss to have the whole exhaust replaced. ( I think it makes sense to replace the stainless pipe and its lagging at the same time as the engineer has it all in bits and is replacing the duct. )

I feel such an idiot. :o:o:o

Boats.....don'tcha just love 'em!
Click to expand...

ASAP Supplies sell 50m/m glass tape

http://www.asap-supplies.com/search/glass+tape
 
If this Maxitherm stuff is supposed to go around exhausts, you have a good claim I'd think, no need to feel foolish.

I'd think the standard black outer getting too hot for fenders sounds a distinct liability !

Must say I've been rather underwhelmed in every way when I've been on boats with Eberspachers, fan noise and electricity consumption being other moans.

Hope it is sorted satisfactorily.
 
Seajet said:
If this Maxitherm stuff is supposed to go around exhausts, you have a good claim I'd think, no need to feel foolish.

I'd think the standard black outer getting too hot for fenders sounds a distinct liability !

Must say I've been rather underwhelmed in every way when I've been on boats with Eberspachers, fan noise and electricity consumption being other moans.

Hope it is sorted satisfactorily.
Click to expand...

I believe the stuff he's referring to is the insulation that goes around the hot air ducting, not the exhaust.

Oops! :o
 
Been there done that. I had to change the outer duct as it stunk every time I used it and just couldnt get all the molten thinsulate off the duct.

Current boat has its exhaust wrapped in a tape supplied by mikuni and I can hold the duct with it running so doubt it will burn a fender.

Suspect ASAP stuff will be similar and will do a good job.
 
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I was suprised how hot the exhaust got on my recent eberspacher installation. I would have thought the white stuff along with the outer pipe would have made it cooler.

has anyone tried the Quietlife Exhaust Lagging from ASAP?
 
In circumstances like to this I normally use high performance carbon impregnated manifold tape in three layers and sleeve the whole thing in 52mm duct. I have to say I don't like it as it makes service inspection of the exhaust impossible without stripping, but when needs must...
 
Sounds like you used duct insulation to me!!... No NO !! its only rated up to 140 or 170 degrees.
I hate exhausts in lockers, when wrapped they sometimes feel ok but when the locker is then filled with gear they may get hotter and hotter. Wrapping one bit may cause overheating further up the pipe. I would prefer to use a jacket like a pipe with air space.
 
I think I'd want some sort of stainless perforated half cylindrical 'caging' around the exhaust in the locker, I can picture the stuff I mean but can't think of a name or supplier.

Otherwise it will always be a worry, or would to me anyway.
 
Seajet said:
I think I'd want some sort of stainless perforated half cylindrical 'caging' around the exhaust in the locker, I can picture the stuff I mean but can't think of a name or supplier.
Click to expand...

Sounds like a good idea..........now all we need is for someone to come up with a link to a supplier that won't charge a fortune. :)
 
Pinnacle said:
Sounds like a good idea..........now all we need is for someone to come up with a link to a supplier that won't charge a fortune. :)
Click to expand...

I made a guard out of some stainless weldmesh which has 1cm squares. Very easy to cut and bend. There's a stainless fabricator just along the road.:)
 
I'm probably not in your neck of the woods. Indeed, according to one here, I'm on Mars.
However,

I looked on t'internet, and found F H Brundle, (Google) who do a "cut to order", and didn't seem too expensive. You could try them, or maybe Yellow Pages will show up someone local.
 
Seajet said:
I think I'd want some sort of stainless perforated half cylindrical 'caging' around the exhaust in the locker, I can picture the stuff I mean but can't think of a name or supplier.

Otherwise it will always be a worry, or would to me anyway.
Click to expand...

Caging is the best way to go, perforated or mesh stainless or welded rods support the exhaust pipe with insulating rings of glass fibre rope or some other suitable material. The exhaust will be cooler and you will have the benefit of using the otherwise wasted heat.
 
Pull a shopping trolley from a canal,cut a bit out,and beat it into a suitable shape shield,attach with bolts and penny washers,job jobbed!
 
sailorman said:
ASAP Supplies sell 50m/m glass tape

http://www.asap-supplies.com/search/glass+tape
Click to expand...

Have ordered some wrap and will put it on after I have cut off the (now v smelly) black apk duct. Will report back when done.

The Ebersplutter dealers, Krueger, were completely hopeless - didn't return calls and now tell me, after I had chased them, that they have a two week waiting list for work. :(
 
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