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Post by dralyagmas on Nov 20, 2014 2:42:24 GMT
I have a pretty stupid question but I cannot find the answer anywhere from on here to the manual.
My hot water system (SF37) is leaking and I am going down the route of a new relief valve but finding it hard to find anyone who knows anything about them in Australia. However that is not my question; that is - how does the hot water system work? There is no on/off switch other than the 240V (shore) switch. But at seemingly random times I have either very hot water, or none.
Does the hot water automatically heat up as soon as the motor is running - thereby no way to turn on or off? and no way to turn on if the motor is not on?
Thanks
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Post by sitara on Nov 20, 2014 5:16:11 GMT
The engine coolant circulates through the hot water vessel when the engine is running and does provide very hot water but I don't think this can be controlled. A valve in one of the pipes from the engine could be added to prevent heating but I don't know how this would affect engine cooling.
When shore power is connected the water can be heated electrically - my boat has a switch on the 240 volt AC part of the switchboad for this.
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Post by sailbleu on Nov 20, 2014 7:37:18 GMT
 I've added a valve - this one is upstream - to the hot water tank so I can seperate the engine coolant from the hw tank. There's also a downstream solenoid valve near the tank which is controlled by tempsensor . The valves are there Just in case the coil inside the tank starts leaking . Small chance it will but you can never be 100% sure. Now it' s not just that , a few years ago I made a new hw tank myself . The 40 liter original tank was not enough , i wanted more . However after measuring the available space i found no larger hw tank would fit in , it' s located under one of the seats you see. So infact I was forced to a diy tank. Bought a solar hw tank of the right size , cut one of the heads off , added a coil ( i can now also heat the water with my eberspacher and individual coil ) some in- and outlets , 220 AC element , magnesium rod which was not present in the old tank and closed up. I know there' s the pressure issue , when you heat up water it expand , the original hw tanks are designed to withstand this pressure . I solved that by having several relief valves , also one between the suction and discharge of my waterpump. I really would have bought a new tank if the size was right , but nowhere to find. My system allows me to control the heating by the engine coolant . Remember the coolant is 80 to 85 ° C . Even when insulated , which it is , it radiates alot of heat to the seats and fridge next to it , in the summer time it' s already hot enough in the boat we think , this way i can bring the temp down with a simple setting or just closing the valve manually now. The 60 liter i have now does the trick for us. Regards |
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Post by no3l on Nov 20, 2014 10:59:53 GMT
Hi
As far as I can remember, on our SO36i there is a mixer at the output of the hot water tank which allows you to control the temperture of the water to the hot water taps.
I'll be at the boat over the weekend and will check and confirm.
Regards
Noel
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Post by sailbleu on Nov 21, 2014 7:13:56 GMT
Was not aware Jeanneau installs mixer in their newer boats , very handy , can you easily set the temp.? I've made these adaptions some years Works like a charm , stable temps for shower and sink water.   |
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Post by no3l on Nov 26, 2014 23:32:22 GMT
Hi Here is a picture of the mixer on the hot water tank on the SO36i (2008). The temperature range on the control knob is 40C to 60C. Regards Noel  Attachment DeletedAttachment Deleted |
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Post by ForGrinsToo on Dec 7, 2014 14:59:18 GMT
Related: on our 2010 36i, during winterizing, I was not able to get this mixing valve to budge. I haven't found a manual for it and don't know if it has just corroded, or what. But I don't want to apply a lot of torque until I know how it is supposed to work. Any suggestions?
Thanks,
Geoff
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Post by dbostrom on Dec 7, 2014 17:57:46 GMT
As long as we're at it, does anybody know if the tank pictured by ForGrinsToo is equipped with an anode and if so how it's accessed? For that matter, does anybody know the manufacturer?
(same tank in our boat, too many tanks die prematurely thanks to missing anodes...)
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Post by dbostrom on Dec 7, 2014 20:30:09 GMT
Possibly answering my own questions and possibly of use to others, the skinny on Jeanneau water heaters, including parts numbers etc. If these tanks are actually copper as specified in the document below then I'm surprised and delighted. Anode becomes pretty much irrelevant. I wish I wasn't 90 miles away from the boat right now; would like to confirm make/model. www.jeanneauamerica.com/techdownloads/techsheet_heaters.pdf |
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Post by saltymetals on Sept 28, 2017 0:54:32 GMT
dbostrom, did you ever discover the make of the water heater? mine says "....... WARM" but i have no idea of the first word since it is on the side of the cylinder which is up against a panel. I have a 2004 43ds and would like to renew the anode . If you are right, and the cylinder is copper then no need. Your link to www.jeanneauamerica.com re-directs me to jeanneau.com so i cannot access the tech details to which you refer. Andrew "Genial Bee" |
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Post by hoppy on Sept 28, 2017 1:47:08 GMT
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Post by ForGrinsToo on Sept 28, 2017 19:14:10 GMT
The 36i version comes from Quick Nautical www.quicknauticalequipment.com/?lng=en&cs1=01&ms1=2&ms2=5&ms3=69&ctm=0There's no mention of an anode. The tank and heat exchanger are 316 stainless steel; the electric element is Incoloy. My frozen mixing valve makes winterizing the tank more of a chore than it should be - it takes about 7 hours to drain. Geoff |
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