| T O P I C R E V I E W |
| david67 |
Posted - 09 Oct 2019 : 03:03:38
Hi , I have " aquired " a Chinese warm air diesel heater, it's the all in one jobby with built in fuel tank, just bolt it down hook up to electrics pop the exhaust thru the hull etc. Anyone had any experience with them ?
Main points being, Did it pass the BSC , did it burst into flames or cause any injury to boat or crew ?
It does have a CE mark !!!!
Cheers in advance, David. |
| 15 L A T E S T R E P L I E S (Newest First) |
| cliveshep |
Posted - 16 Dec 2019 : 02:57:22
Mine defo glowed viewed from outside when running flat out but it was heavily lagged for the short run to the outside air and it was the big Eber on my Ocean 30. My exhaust was 25mm copper tube to a homemade skin fitting - knowing how copper conducts heat might have something to do with it and on truck applications the exhaust is straight to outside air with convoluted stainless pipe.
Finally living the dream!
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| Mad Harold |
Posted - 15 Dec 2019 : 10:13:41
Chinese diesel heater now fitted and working.Initial problem was voltage drop due to too thin wiring with a long run,but when sorted the heater works a treat.
It'not as noisy as I have been led to believe,havn't fitted a silencer and there is a high pitched whistle on start up which can only be heard by sticking your head outside.Inside there is a bit of a roar,but not very loud.After five minutes it settles to it's cruise setting and is inaudible apart from a slow thud thud from the fuel pump.
It's run now some twelve hours and having a warm cabin when pottering about doing this and that is lovely.
I havn't seen the exhaust glowing,but I have it on it's lowest heat setting which is more than enough for a Norman 20's dog kennel cabin. |
| df |
Posted - 08 Nov 2019 : 11:56:16
I don't think I've ever seen my eberspacher exhaust glow.
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| cliveshep |
Posted - 08 Nov 2019 : 11:35:28
I would say it would be glowing brightly under the wrap and what would increase safety would be a lagged exhaust pipe with another pipe over it to prevent chafing. That would certainly be a DIY effort but the principle is to conduct hot gases away without them setting things alight in the process.
I wonder if a home-made boiler would utilise those hot gases to make hot water, having a dual effect, beneficial hot water and gases cooled right down? It would recover some of the btu's otherwise lost too.
Finally living the dream!
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| Mad Harold |
Posted - 06 Nov 2019 : 10:49:48
Thanks,Clive.I chose a warm air heater because it is room sealed ie no naked flame to ignite petrol vapour or leaking gas.
A glowing exhaust pipe is obviously a hazard so will need fireproof lagging.Havn't fitted mine in the boat yet as I am waiting for the extra parts that are needed to arrive,longer exhaust,longer inlet plpe,insulated hull exhaust fitting (your'e right,they are expensive)and two s/s elbow joints.
Even with the exhaust lagged,presumably it's still glowing underneath the insulation.
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| cliveshep |
Posted - 04 Nov 2019 : 02:00:51
I had Eberspachers in my last two boats - 2nd hand from BT crew trucks. Neither came with an exhaust fitting. From outside 2 things to watch - any boat that moors alongside the exhaust is going to catch fire, the exhaust glows in the dark as the heat cannot dissipate because it is heavily lagged inside the boat with glass-fibre fire-resistant pipe wrap, and the 2nd thing is it sounds like a mini-jet engine - which in effect it is - so when it fires up you hear the rapid ticking of the fuel pump and a dull roar.
But I never found it too intrusive as on both installations the unit was mounted in the engine room.
As for exhaust fittings - on one I used compression fittings and 28mm copper tube and used a clamp to clamp the copper tube to the exhaust spigot, the other end went to a 28mm tank connector BUT that was a dutch steel boat so nothing to burn, I still heavily lagged the pipe though as it glowed in the dark in use and was clearly a fire hazard.
On the Ocean 30 I made my own skin fitting out of a piece of 28mm stainless steel tube held inside a large piece of tube by 3 stainless legs "pop" riveted and a stainless bezel outside bolted through the hull also holding the main fitting. Cost me probably 20 pence in scrap and pop rivets and was passed by BSS in both cases.
You got to be mean to save money and be prepared to do some home engineering but Eber fittings as said are very expensive.
Finally living the dream!
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| IanM |
Posted - 02 Nov 2019 : 19:24:03
And even with a silencer they are still too noisy at night. Never moor next a boat that has one! |
| df |
Posted - 02 Nov 2019 : 17:48:52
The vehicle eber/webasto silencers are the same unless you pay extra for the marine one, I'd go for the cheap option and get the seam tig welded if you know a welder.
I need to do mine sometime but it's in an open area with a deck drain close by so I don't worry too much, anywhere within the hull without good ventilation would be a problem.
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| Mad Harold |
Posted - 02 Nov 2019 : 16:06:46
Thanks for that df.There was no silencer with the heater,so I will probably get an Eberspacher or Webasto one.
It seems to me though,that most of the noise is from the motor/fan with the exhaust noise in the background.It's very much like a jet aircraft starting up! |
| df |
Posted - 02 Nov 2019 : 14:49:04
The silencers supplied with them are not sealed and are not really suitable for boat use, find a local welder and get them to seam weld around the outside before using or you will get fumes inside the boat, aa lot of folk seem to buy eber/webasto exhaust hose for boats as the chinky stuff is very poor quality and likely to gas you, remember these things are designed to be fitted outside passenger compartments on vehicles (usually underneath) so they don't worry too much about exhaust leaks.
NBAS--The communal colostomy bag of the boating community.
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| Mad Harold |
Posted - 02 Nov 2019 : 13:54:47
Have bought the one with the built in tank which I think will simplify fitting.
Have only run it in the garage so far and it puts out a good amount of heat.
A couple of negative points. The instruction book is hopeless,in that it is a dreadful translation,and the settings on the panel don't seem to correspond to any thing in the book.I got it working by trial and error.
On startup it is VERY noisy.It is acceptable at lower power settings,but as I want it as a night heater,I won't be able to sleep with it running in the place I was going to fit it (in the cupboard under the sink) I think now I will fit it in the cockpit next to the cabin bulkhead and construct a box around it.It will involve buying more air ducting and extending the control wires to the unit. |
| df |
Posted - 20 Oct 2019 : 14:48:46
"Free floating crap" and "chesterfield canal" says it all! But in these pc days we're meant to call them narrowboats......
NBAS--The communal colostomy bag of the boating community.
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| philihun |
Posted - 20 Oct 2019 : 13:23:46
Sorry i had been reading about the space shuttle and your last blog reminded me of the launch sequence. plus a bottle of wine helped,
pr hunt |
| david67 |
Posted - 20 Oct 2019 : 07:40:49
I'm a bit confused Philihun ! |
| philihun |
Posted - 19 Oct 2019 : 19:51:32
I know no why the first ever space shuttle spent £50 million deciding how to spend a penny.And Btw John Young who walked on the moon and flew the first space shuttle said , when Houston called to tell me about a major problem i was having a free floating crap.He would hate the chesterfield canal, bit more stressful.
pr hunt |
