Bouba
Well-Known Member
I don’t know if I can get a new element on Porquerolles…I thought I bought the last one the last time my hot water failed…and FYI the dogs comfort is priority
Mixer taps
- Thread starter Bouba
- Start date
jfm
Well-Known Member
I mentioned trucks bcz the engines in most boats are installed at least 10x as often in trucks and buses. Same engine. Trucks and buses need cab heat.
Truck use diesel heaters parked at night, but engine calorifier matrix when driving.
Virtually all big engines have tapped holes to connect calorifier hoses. My Cat C32s did and each of them is bigger than your two "toy" (to use your word) engines put together.
Portofino
Well-Known Member
It’s a water matrix air heater in a road vehicle.It’s not pumping it’s heated water through a tank of sitting water like a boat .
Thats the distinction.Further more it’s thermostatically controlled the road vehicle, be it Morris 1000 or MAN truck .
Road vehicle s say a Fiat 500 or Bentley don’t have hot taps , you know sinks , showers et al .
billskip
Well-Known Member
Porto, it's a closed circuit water cooling system, there is a coil in the tank and heat is transferred, the water in the tank and the water in the engine cooling do not get mixed.
The coil in the tank in a boat is no different to the heater matrix in a road vehicle in its use for heat transfer...
The coil in the tank in a boat is no different to the heater matrix in a road vehicle in its use for heat transfer...
jfm
Well-Known Member
Why do you write such garbage continuously?
There is no distinction, exactly as Billskip says. There is a loop of water leaving then entering the water jacket of the engine, whether serving a boat calorifier or a matrix in a car/truck. Both are exactly the same. Both are thermostatically controlled. Exactly the same.
MapisM
Well-Known Member
Ok folks, since PF didn't answer my question, I suppose he's not interested to know if he's right or wrong.
But I didn't want to leave anyone interested in an Itama like his, or any other MAN powered boat, wondering if they could use or not a marine boiler capable of heating fresh water with both AC and main engines.
You know, like just about every other marine engines, really.
Now, the PDF file I am attaching is an abstract of the MAN repair manual for the inline 6 engines, including the D2876LE401 which IIRC is what power PF's boat. It shows the schematic diagram of the cooling system, and what you can see at point 12 ("Heating lead and return line") is all it takes to connect a marine boiler, nothing else.
So, hopefully this is enough to put the matter to bed.
Unfortunately, as of now I can't stretch this contribution to posting also a pic of the actual connecting points, because while one of my neighbours' boats is powered by very similar engines (LE405/730hp instead of LE401/700hp, which is irrelevant), he's not onboard ATM and I don't know when he'll be back.
So, all I can do is post a pic of where those connections are in my V8 engines (red lever valves).
But according to PF this doesn't count, because they are pre-MMDS bells and whistles, so I think it would be nice if he could (once he will be done digesting his humble pie) re-check his engines, find out where those connections are, and post a pic for future reference - even if possibly closed with caps, which as I already said would make perfct sense if a marine boiler was never installed in his boat.
MapisM
Well-Known Member
Oh, and for the records, the valves in the previous pic are closed because, while the boat was originally equipped with a marine heater, I neither need nor like to heat fresh water with the engine, so I just keep them closed.
But obviously the statement "MAN don’t do calorifers outlets" remains completely wrong regardless of my preference.
The pros and cons of using engines for heating fresh water and the reasons why I prefer not to are for another thread, I reckon.
But obviously the statement "MAN don’t do calorifers outlets" remains completely wrong regardless of my preference.
The pros and cons of using engines for heating fresh water and the reasons why I prefer not to are for another thread, I reckon.
Portofino
Well-Known Member
Yes .
But on large boats the water hot tank is so large that even a bigger 20-34 L engine can’t heat sufficiently via a calorifer.So they don’t bother .Instead relying on AC from the geny / shore .
Even in trucks when the engines off they use the Erb or eq .Diesel powered heater .They don’t sit there watching it frost up as the engine cools in winter .
What I am saying generally the bigger engines for bigger boats don’t use calorifer .This is simply because the vol of its hot tank water , the use age pattern of a 5 cabin +++ boat , it’s galley etc etc and as I said it’s geny running .
So they don’t bother .Also the parameter thingy if a engines cooled effectively by a 200 L tank that’s constantly being emptied by the peeps on board .
Obviously there are exceptions like Mapish has gone to great lengths to show .
The eldest lady lived well over 100 and smoked daily .But the gen advice is smoking reduces your lifespan .
Her longevity hasn’t altered medical opinion.
MapisM
Well-Known Member
Hang on, so after writing "MAN don’t do calorifers outlets", now you are pretending that all MANs are an exception to your "rule"???
Remember, the page with the schematic of the cooling circuit shows YOUR engines, not mine.
Bouba
Well-Known Member
Come on everybody…that’s enough arguing
Portofino
Well-Known Member
Indeed .Have you got the pics of your H tank ? The one in Q .
None of theses beautiful boats will have engine heated H water.FWIW .
LHS Gusta is the 165 btw .
Bouba
Well-Known Member
I shall have another look at my tank later this morning
markc
Well-Known Member
Shame you can't use the hot air hereabouts to warm your water
billskip
Well-Known Member
It's your bloody fault, you started it
billskip
Well-Known Member
Maybe not, but I cant understand why not use "free heat" although I suspect its more down to the initial cost of design/installation to be economically viable, rather than conside the extra fuel use albeit a minuscule amount in the overall scheme of things it still adds to the pollution.
Bouba
Well-Known Member
i said mixer taps…not mix it up
Bouba
Well-Known Member
jfm
Well-Known Member
More garbage. Not worth the time replying point by point.
Portofino
Well-Known Member
Its as I said the “free heat “ just isn’t enough on a big boat .Also a tiny extra complication potentially a engine issue if the colorifer pipage fails .
Bit more here and gen maintenance tips .
Although not relevant to Bouba s issue - I like the closed heating of glycol btw for the winter running it through the air con air handlers.Normal reverse cycle uses sea water so one relies on a higher sea temp than air .
As you see the hot waters all electric like iam saying on bigger engined boats they don’t do engine cooling circuit heating .
Still awaiting pics of Bouba s tank and if possible the engine pipes to / from .
But the vid should keep folks entertained while waiting .
Bouba
Well-Known Member
I removed the thermostat and tested the continuity with a multi meter and I think it is dead…but I am not good at that sort of thing so I also tried the reset button but that didn’t respond…so I cleaned up the connectors and reinstalled it..I have put the electric on and if there is no hot water after half an hour I will see if I can find a new one on the island.
I haven’t touched the element yet because it’s quite new and it’s a messy job..and I don’t know if they have a spare one here …after lunch I will visit the chandlers
I haven’t touched the element yet because it’s quite new and it’s a messy job..and I don’t know if they have a spare one here …after lunch I will visit the chandlers
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