Heater exhaust

[westhinder]

What is the learned panel's advice on sealing the exhaust of my Eberspächer? The flexible stainless pipe had corroded and become detached from the heater. I have removed and replaced the most corroded part, some 30cm. But exhaust fumes keep seeping out where the old and new tubes are joined, making it impossible to run the heater without effectively gassing the boat.
Any tips on how to seal the join in the exhaust tube warmly welcomed. Or do I have no choice but to replace the whole exhaust?

<hr width=100% size=1>Johan

 

[paulrossall]

I used a silicon sealant made by loctite to seal the exhaust joints on my eberspacher. I think I bought it at my local auto spares distributer. It was blue! I did not use eberspacher exhaust pipe as it is very expensive. I got stainless steel flexible exhaust from an exhaust manufacturer. It was a thicker guage and was less than half the price. If in any doubt at all replace the exhaust, the fumes could kill you. Paul

<hr width=100% size=1>" there is nothing-absolutely nothing-half so much worth doing as simply messing about in boats".

 

[boatmike]

If you use stainless exhaust pipe wrap it in heat blanket or it could cause a fire. It gets bloody hot! Eberspacher hose has a built in thermal insulation. And frankly I would replace the lot.... False economy and bodged repairs are dangerous...

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[JohnL]

WOW these heaters sound dangerous, is your heater hidden away in a locker where its not normally in view?with diesel being fed to it and a leaky flue.quote, it gets bloody hot, unquote. Thanks for your post it has helped with the doubt that had been put in my mind about fitting a catalitic heater, it will be in view and cheap enough to change every year or so.

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[greatspirit]

I wonder how many boats are fitted with a Carbon Monoxide sensor or an LPG sensor for that matter.
Available on
http://www.bes.ltd.uk/nav_graf/frames_cat.htm

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[Trevethan]

The problem with a catalytic heater though is all the water it spits out.

The exhuast of diesel heaters get hot, that's why they are insulated -- the leaky exhaust in this case is one which has passed its useful life and needs replacing.

I'd prefer teh dry heat of an externally vented system -- properly looked after to the wet air spewed out by a catalytic heater. Bettwer for me, the boat, and cheaper to run.

Best system of all as fair as I am concerned is the diesel fired drip heater -- Dickinsons or Taylors. Provide great heat, low cost to run, can look pretty..





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[JohnL]

If I had a big one like you [er boat that is] I would probably be living aboard and have an Aga range fitted,I only need heat for short periods ie.odd evenings/mornings in one cabin which if not kept well ventilated gets damp anyway. What is best for one may not be ideal for another.

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[Plum]

Nick, from your posting I assume you have a Taylors Diesel cabin heater, as I have. Do you know the method of lighting it using a blowlamp instead of meths? I have seen this done on the presurised paraffin version but not sure about the drip feed diesel one. Any advice please?

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[Gordonmc]

Safety-wise I would rather have an Espar than a catalitic gas heater. On my installation in a wooden boat I wrapped the exhaust with rockwool held in place with 100mm ducting, split lengthways. The motive was to stop heat drying out nearbye planking, but the added plus is that the ducting is touchable.
In reply to the original post... I would try gun gum as a short term fix while saving up for a complete run of new pipe.

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