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Discussion Topic: Diesel heaters
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annville |
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Hi I dont think that there is a best way it depends on how is the best way to distribute the air and if each outlet is fixed or adjustable if the first outlet on a run is opened than this will reduce the flow to the others many have a 4inch flow from heater the tee off this is fine if heater is say at one end of boat but if in middle you will want two runs at the end of the day the heater will only produce a given flow you then divide it between out lets it is better to have to bigger size then to little. John
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ruby |
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Not meaning to hi jack the thread but has anyone tried inserting an inline electric fan (ie computer cooling fan) into a length of heating ducting to improve the flow to distant outlets ? Can't see any obvious problems other than the heat of the air in the ducting melting the fan if plastic. Any thoughts would be appreciated and might also help the op. Graham
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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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