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Discussion Topic: Diesel heaters
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annville |
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Hi Graham It my cause the heater to shut off if the pressure at the heater fell below sencer setting you will always get less at the end as you would the beginning as temp of air drops the density will lower.idealy you want a large volume at a slow speed then no noise or drafts. John
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ruby |
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Thanks John
I hadn't thought of that . I will experiment with care .
I hope it won't be a problem. Basically my problem is one of Angles. It is an ex hire boat and the builder installed the heater for simplicity rather than effectiveness. Six inches after the outlet I have a splitter. One bit goes straight to the saloon and rear cabin vents which get all the heat and air which is actually more than enough. The other bit goes into a 180 curve and then to a 12 foot length of drain pipe to go through the engine bay and into the forecabin at which point there is no force or heat. Basically the air is being asked to go back on itself.
Shutting off the saloon vent gives a marginal improvement but not really effective, hence my idea of putting a small fan somewhere along the 12 foot drainpipe run.
Thanks again
Graham
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annville |
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On my last boat i wrapped armerflex around the air distribution pipes held in place by tye wraps, you can buy this in sheets or camping sleeping mats do simmerler but beware the cheap ones are not fire resistant. John
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angelfish |
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Hi just rejoined after a while away.
If the splitter is a 'T' join and the straight way does not go directly to the cabin turn it round so it does. If it is a 'Y' joint try a 't' joint as above.
As has been suggested lagging the pipe with increase the flow of heat, JPC, Brundall do some good but pricey lagging.
All of the above are cheaper than a new heater and the new heater will benefit from lagging anyhow.
paul
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ADI |
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Did a quick test of the new heater today, jump leads on the car lol, all working fine very pleased, not bad for £87.92 from Czech Republic delivered in 4 days.
Regards
Adrian Michelle
Beck Braydon and Mere.
This message was edited by ADI on Oct-4-20 @ 8:43 PM
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ADI |
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Anville would you recommend vaseline on the diesel heater electrical connections? infact all 12 volt electrical connections on the boat moving forward.
Regards
Adrian Michelle
Beck Braydon and Mere.
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annville |
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Hi Adi electrical contact grease ie petroleum grease/jelly is the same as vaseline vaseline is medically cleaned but easily obtained petroleum jelly or modern equivalent silicone grease is not in small quantities But if no silicone grease use vaseline does same job, and most people have it to hand.BUT DO NOT use ordinary grease on electrical components. John
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ADI |
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Thanks for that John, maybe I shouldn't have asked you if you recommend maybe I should have said do you use electrical lubrication on all connections?
Regards
Adrian Michelle
Beck Braydon and Mere.
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Regulo |
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ADI, please inspect that exhaust silencer for gas tightness. Take it off, cover one end and blow through the other, should not leak at the sides. It should be OK if it's for marine use. Similar shaped ones for automotive use are NOT gas sealed as they are designed to be fitted externally.
See here: http://the-norfolk-broads.co.uk/viewmessages.cfm?Forum=22&Topic=37743&keywords=exhaust
This message was edited by Regulo on Oct-5-20 @ 7:28 PM
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ADI |
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Ray I can confirm it leaks like a sieve as on start up smoke was coming out of all the edges, I was thinking of soldering it with blow torch but not sure if it will take to the stainless (if that is what it is) or sealing it with Fire Mate Intumescent Acrylic Sealant with a u shaped channel slotted over the joint, either way I will make it safe and test it, having said that do I even have to use it could I just take the straight pipe to the skin fitting. I suppose a bit of sealant on all exhaust joints is required too.
Regards
Adrian Michelle
Beck Braydon and Mere.
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Sep-27-2020 @ 4:56 PM
