SO 379 diesel heater

[Finny]

Hello everyone, I would like to retrofit a diesel heater in my SO 379 (2015 / 2- cabin version). However, I am not sure where to place the heater, the exhaust and the air vents. Does anyone have a SO 379 (2015) with a diesel heater that was fitted at the factory? Could I get information on the installation locations and/or pictures of it?
Thanks!
Unfortunately, I have asked Jeanneau unsuccessfully for the relevant information.

[zaphod]

I can't speak to the 379 specifically, but on my 39i it is located in the transom on the starboard side. There is an access hatch on the bulkhead aft of the starboard berth. The exhaust comes out right near the heater, and the fuel tank isn't far away, under the starboard berth. It gets it's fresh air from the transom step.

I think the location of mine is pretty typical. It wouldn't surprise me if your boat has a similar space in that area.

I'm really surprised your local broker can't give you that information!

[paulh]

Hi Finney

we have a 2012 SO379 and our webasto heater is as Zaphod describes. 
The controller is located on the starboard side saloon panel, on the end of the galley cupboards) where there is also an electrical socket.

the 379 owners manual has a few basic pictures 
here’s a screenshot

[Finny]

Thanks for the feedback. I forgot to mention that it is the 2-cabin version.
At the described place is on my boat the container for the gas bottles.

I was looking for such pictures. They are not included in my manual.

Presumably warm air hoses also run on the starboard side on your boats? How many air vents do you have?

[zaphod]

You will probably find that the propane locker is further aft and above the space we are talking about. If you crawl to the back of the aft berth you should find an access panel. Remove that and you will see the space.

The heating ducts on my boat run down the starboard side with outlets in the aft cabin, salon, and forward cabin. There is also a duct that crosses over to the port side to supply the head.

Again, my boat is the previous generation to yours but very similar layout.

[paulh]

Yes agree with Zaphod. 
Ours is also 2 cabin. No heating goes to the ‘garage’ on port side. 
everything is under starboard birth and aft of starboard berth.

unfortunately not on boat - horrible weather in uk at moment - otherwise would send photos

[SY Racer]

I recently retrofitted a chinese diesel heater in my 1998 SO34.2 (2 cabin version).

I went for a cheap Webasto/Eberspächer knockoff, 3kW modell called VEVOR. The brand names of these chines heaters may vary from dealer to dealer and from time to time.

The heating unit itself appeared to be of reasonable quality, but most of the additional parts were definitely crap and shouldn't be installed in a marine environment (like the exhaust, hoseclamps, fuel hose, screws etc). After checking all parts I decided to order the following additional parts:

- fuel hose 4mm
- hose clamps, AISI 316
- exhaust muffler, marine grade (WEBASTO 1322001A)
- exhaust hull breakthrough, AISI 316
- tank intake
- heat protection tape
- heat shielding mat

all in all, I spent more money for accessories than for the heater itself.

The heater is installed in the large port side cockpit locker. I decided against the position in the stern lazaret due to accessibility. The exhaust pipe is positioned in the transom to make sure not to blow the exhaust into the neighbors cockpit in the marina.

A piece of plywood was sikaflexed to the hull just above the stringer in the portside locker. Warm air pipe was run through the bulkhead into the head. Underneath the tub I installed a T-connector an ran the warm air pipe into the salon. So, one air vent in the head and one in the salon.

The panel is mounted outside the locker on port side (over the fridge). Cables for the panel are not critical and could easily extended (I suppose it's an I²C or CAN-Bus signal, but didn't verify that). I cut the wires and put some similar cable in between using some WAGO 221 inline splicing connectors (highly recommended for a lot of situations), so no extension cable with specific connectors was needed.

The 12V supply was done with some marine grade 4mm² cable, as the heater will consume ~10A during the starting phase.

I can provide photos when at the boat next time.


For the interested parties, here are some links to the products I used:


heater:
www.amazon.de/-/en/diesel-auxiliary-heater-silencer-electric/dp/B08DXPY9S3

exhaust hull breakthrough, AISI 316:
www.amazon.de/gp/product/B098XCDRCC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1&language=en_GB

exhaust muffler:
www.ebay.de/itm/233307497214

tank intake:
www.ebay.de/itm/165652687597

heat protection tape:
shop.schlauchland.de/hitzeschutz/baender/322/hitzeschutzband-titan-50mm?number=HSB-Ti50_V100_10m

heat shielding mat:
shop.schlauchland.de/hitzeschutz/matten/326/hitzeschutzmatte-alu-fiberglas-selbstklebend?number=HSM-AlFi-sk_V100_2.0x0.20m

WAGO 221 connectors:
www.amazon.de/-/en/Connection-Conductor-2-Conductor-Actuation-Transparent/dp/B08X6CPFNR/ref=sr_1_5?keywords=wago%2B221&qid=1673453778&sr=8-5&th=1

marine grade cable:
www.amazon.de/dp/B0776HQ6BW/ref=pe_27091401_487027711_TE_SCE_3p_dp_1?th=1

[Finny]

Thank you zaphod and paulh. Now I know where the heating is installed. Retrofitting a heater through the small opening there would be very sporty.....🤔

[Finny]

Thanks also to SY Racer for the detailed contribution.

[SY Racer]

Just for those who are interested, her are some pictures of the installation on my SO 34.2:





diesel heater

owncloud.system-admin.info/index.php/s/08CLUDBR7dQXyH7




owncloud.system-admin.info/index.php/s/sl4G4Qy9uUFGxmd


cu

Carsten

[jdl01]

My 379 [2012] has a factory installed webasto heater system. It is the 2 cabin layout. The head receives heat from a duct that runs across the forward bulkhead of the aft lazerets to the port side of the hull and then forward to the head compartment via the storage garage. The main cabin and forward berth are served by a duct along the starboard side of the hull.

[Charlie-Bravo]

Not a view on model specific installation , but give consideration to the heated air inlet, if inside the boat or locker you may find the rest of the boat taking on the aroma of the inlet area. 
I considered an internal inlet on the basis of heating pre heated air, but went with a cockpit air inlet for fresher air, plus, should we ever be blessed with a heat wave , we can use the heater to just blow outside air around the inside of the boat without heat.
I also put a heater outlet in the cockpit, we have a full canopy and being heated makes it very cosy.

No great Rules, each to their own, and the environment conditions,  just food for thought.

CB

[SY Racer]

Taking the inlet air from the cabin is more efficient regarding the heating. But it comes for a price.

As warm air holds more moisture than cold air, the cabin will become much dryer if one takes the inlet air from outside (or from the cockpit locker). If the warm air from the cabin just circulates through the heating unit, the amount of water in the air won't decrease and will condense as soon as the temperature goes below dew point (after leaving the boat).  So heating up dry, cold air from outside and blowing it into the cabin might be the better choice as nobody likes condensing moisture, I guess.

cu
Carsten