Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 17, 2019 14:27:20 GMT
I'm considering sticking a couple of Chinese Eberspacher copies in the engine room of the bunker.
Something to dial up with the phone in case it gets really cold. With air ducted to the cabin.
It is inappropriate to install any hull penetrations on this particular boat due to it being designed to withstand the future climate breakdown and associated risks so is it okay to just put a vertical flue on ?
I've never seen or noticed one of these heaters with a vertical flue. Maybe there is a reason not to do it.
Obvs would be adding a Chinaman's cap or H terminal on it to prevent rain getting in.
|
|
|
|
Post by thebfg on Nov 17, 2019 14:38:24 GMT
I believe it does get done.
Two concerns.
Water getting in.
Fumes getting into cabin area.
Obviously as normal a grown up will be along soon
|
|
|
|
Post by samsam on Nov 17, 2019 14:53:06 GMT
Deviating from the makers design and spec is a specific no-no in any installation as far as I remember, certainly with gas flues, oily ones may be different.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 17, 2019 15:23:38 GMT
Its quite intriguing. The standard procedure is to put a through hull insulated fitting in but I can't see any reason not to do a vertical stack. Maybe the length of it would be problematic.
I can see the issues with getting the exhaust in the cabin as a reason but then a hull mounted outlet can interact negatively with cabin ventilation as well.
|
|
|
|
Post by brummieboy on Nov 19, 2019 20:22:25 GMT
Plenty of pressure jet burners work with a vertical flue. As long as it is not too long and bendy to create a resistance, should be no problem. Too long a run could cause condensation through the flue gas cooling down too much, which could cause a problem.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 19, 2019 20:39:44 GMT
Plenty of pressure jet burners work with a vertical flue. As long as it is not too long and bendy to create a resistance, should be no problem. Too long a run could cause condensation through the flue gas cooling down too much, which could cause a problem. Good point about the condensation. I had not thought of that. An external extension is definitely going to be a condensation trap. Webasto silencers have little drain holes but they are horizontally mounted units usually. Maybe a horizontal silencer then an elbow with a little drain hole in the bottom of it might be worth looking at. Or use a webasto one but they are quite costly for what they are. Perhaps a double wall insulated external flue also interesting. |
|
|
|
Post by Gone on Nov 20, 2019 9:30:49 GMT
With a vertical flue you would need to ensure rain didn’t fall down the hole, or drain off the flat surface down the hole. Also the gasses coming out are (on mine anyways) over 200c so you need to think about the burn risk, and if it the back near the tiller, if at head height, you will be breathing in the fumes when the wind is in the right direction........ so a few things to think about.
As to a drain hole at the lowest point, this is more for vehicle applications as the small amount of exhaust gas released in the engine space is not a problem, but inside a boat.............
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 20, 2019 9:42:04 GMT
Good points  It would be for the boat in my avatar which is steered from inside with engines in own room astern of the pilothouse. The burn risk is one I had not considered. Double flue with insulation and a H cap is my preferred solution. |
|
|
|
Post by brummieboy on Nov 21, 2019 22:45:52 GMT
Burning risk could be avoided with an 'asbestos type' bandage.
If you have a 90 degree elbow, then replace that with a tee and cap the bottom end, with a bleed screw.
|
|
