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Post by fritz on Jul 19, 2020 1:28:37 GMT
I was looking for places to store the outside table, table leg, and extra boards recently. I really don't want to store them up in the v-berth with everything else.
Under the back hatch above the fuel tank seems like the perfect place. The only issues is the box around the fuel tank is taller then it needs to be be.
Is there a code/safety requirement to have the fuel tank enclosed in a box?
Is there a code/safety requirement to have the water fuel separator be enclosed?
While commenting on the above consider...
1. The box has had a whole drilled in it by Jeanneau to run the transducer wire, no fire stop to seal the hole. 2. The plastic access door to allow access to the water fuel separator is not fire rated. 3. And the icing on the cake, the box over the fuel tank is not sealed at the rear. So flames, vapors, etc. can freely flow into the space and eventually reach the Webasto heater.
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Post by ihsan on Jul 26, 2020 16:46:44 GMT
I think it should be possible to downsize the box covering the fuel tank about 20 cm or so, from top to down leaving enough area over the tank for air circulation. In this way you can start creating space starting just from the hatch up to the port side. I have not measured it but there may be enough room to put into this space gained, the table and its leg. In this way when you have work with your batteries you can sit here and work comfortably too. This is mostly carpenters work. They can also use the cut piece in the middle. You only have to find pieces for the three sides. The only safety precaution taken by the factory is the two ventilation hoses going to the port and starboad sides and a hole for letting in the fire extinguisher. You can re-adjust this hole and you dont have to touch the ventilation hoses. These hoses pass through the box through an ordinary hole. These are what I think, just for your information.
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Post by fritz on Jul 27, 2020 16:14:52 GMT
ihsan: Is the cover of your fuel tank sealed in the back? I can stick my hand around into the space where the fuel tank is located.
Thanks,
Fritz
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Post by ihsan on Jul 27, 2020 21:36:02 GMT
Ritz, the box covering the fuel tank opens to the stern. It is closed only from three sides, there is no panel at the back. If you point your camera from inside the hatch which is there to service the fuel filter to the back of the box you can see the stern of the boat and the hoses going to the engine..
Perhaps they thought more circulation area is nice for the tank and did not close it completely. In my opinion you can lower the top of the box about 25 cm. or so by cutting the top without touching the tank. If you make this modification, some air circulation area shall be lost, but my opinion is that there is enough air because the box opens to a wide area at the back. And a 10-15 cm between your new lowered top and the tank may still be fair for circulation, Leave the hatch part as it is. Start after the hatch, mark a rectangle enough for your requirements. Cut it with battery saw. Fill the three sides with new panels. It will be something like a step there.
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Post by ihsan on Jul 31, 2020 22:32:43 GMT
By the way talking about the fuel ventilation and fuel tank box, to be on the safe side, I think we all should install inside the box a petrol fume sensor which alerts with sound and light.
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Post by fritz on Aug 3, 2020 15:43:08 GMT
I am not finding any venting specific to the fuel compartment.
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Post by marsail on Aug 5, 2020 19:09:42 GMT
Hi. My tables fit in the compartment just fine. Table post first, then the table top. I also store the filler panel for the galley berth in top of the fuel tank cover. Works fine
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Post by marsail on Aug 5, 2020 19:10:46 GMT
Just to clarify, the table top fits in at an angle resting one edge in front of the batteries.
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Post by ihsan on Aug 6, 2020 0:23:01 GMT
I use the the main compartment to store my dingy when not in use. It fits there with its bag rather tightly. A two meter Zodiac aero. Pump and oars are stored in a shelf above the batteries. The shelf is removable so you can work with the batteries freely. I also moved the batteries about 10 cm. Inside. The fuel box is very close to the hatch above it. In my boat, it does not let items to be stored in between.
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Post by fritz on Aug 9, 2020 23:26:53 GMT
I use the the main compartment to store my dingy when not in use. It fits there with its bag rather tightly. A two meter Zodiac aero. Pump and oars are stored in a shelf above the batteries. The shelf is removable so you can work with the batteries freely. I also moved the batteries about 10 cm. Inside. The fuel box is very close to the hatch above it. In my boat, it does not let items to be stored in between. Can you please provided a picture? Far as I can tell the box around the fuel tank is vented into the main compartment which defeats the purpose of the box. I am trying to find a code requirement that covers the area. It's either not necessary or not installed properly at the factory. Adventures in owning a Jeanneau. -Fritz
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Post by ihsan on Aug 10, 2020 12:14:15 GMT
I think it is not misleading to say the fuel box is not a sealed box. It looks as if it is sealed but it is not. I came to Port Marmaris where the boat is. I will be able to send you some pictures soon. The extention given for pictures does not work here but I will find a way. At the moment there is a 695 and a 1095, besides my 795 here. They all look handsome!
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Post by fritz on Aug 10, 2020 14:12:22 GMT
Thank you!
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Post by ihsan on Aug 16, 2020 12:44:20 GMT
Here are some photos regarding the fuel tank. I checked the user manuel too. It does not say the fuel tank compartment is sealed for fire. According to the manuel there are two vents only, as you can see. It says fan vents, one in the cockpit port side for taking fresh air and the other facing the engine at the bow for letting out hot air. Actually I have 4 vents, 2 extra vents not mentioned in the manual are also in the cockpit area one close to the cabin port side and the other starboard side. The vent on the Starboard side just over the AC entry is not in the manual seems important because it is connected to the top of the fuel tank with a hose. There is a plastic box on top of the fuel tank where it is attached. There is no information as to what is it about. The vent on the port side which is listed as fresh air intake in the manuel has a connection to the fuel compartment with a hose. It passes through a compartment unused on the port side. The extra vent on the port side close to the cabin area, not mentioned in the manuel, opens up to this unused closed compartment without any hose attachment to anywhere. ibb.co/KsbNbtHibb.co/nDFN579ibb.co/SX9f3XGibb.co/bPcRPfgibb.co/YQg3RfTibb.co/kXXFMSCibb.co/mFY5KKvibb.co/v1N4g96
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Post by fritz on Aug 17, 2020 16:34:17 GMT
Interesting, the fuel tanks in our boats are different. Your's appears to be plastic and mine is metal, I would need to look closer to see what kind. What year is your boat?
The box is looking like overkill/useless, I would still like to get a definitive answer before I make adjustments.
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Post by ihsan on Aug 18, 2020 9:49:50 GMT
The boat is a 2020 MF 795. All tanks are plastic, except factory installed Webasto, which is steel. It seems they have air circulation idea around the tank compartment. Manual says hot air out and cold air in fan vents. It sounds as if there should be electrical fans but they are not. May be what they mean is natural fan. The third vent on the starboard side with hose connection from to the top of the fuel tank is a mystery at the moment. Anyway I am able to use the stern area of the boat to store longer objects by the two hatches I have opened under the sliding seat. The third hatch I have opened is on the port side in the compartment next to the batteries. It has nothing to do with the tank compartment. The fourth vent, which seems meaningless, opens without hose to this closed area which I use now as a store, I plan making a small step by lowering the fuel compartment just to sit and work there more comfortably, storing table there seems to me not possible, except a greater alteration including the hatch which opens to the fuel filter.
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Post by fritz on Aug 20, 2020 14:35:59 GMT
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captainden
Junior Member
Posts: 15
Jeanneau Model: Merry Fisher 795 S1
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Post by captainden on Nov 11, 2023 19:11:53 GMT
Guys, I was thinking the same about a fuel tank enclosure and noticed there is no drainage in the fuel cabinet. Is it really so?
Regards, Denis
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davej
New Member
Posts: 7
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Post by davej on Nov 12, 2023 0:31:36 GMT
I think it’s a waste of space and it was installed in compliance with a European code.
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captainden
Junior Member
Posts: 15
Jeanneau Model: Merry Fisher 795 S1
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Post by captainden on Nov 13, 2023 6:13:56 GMT
Is no drainage in fuel tank cabinet addressed to allow no spillage of fuel into the sea?
Denis
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