Diesel heaters direct connection to fuel tank. (1 Viewer)

NickB

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Sep 13, 2018
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I have a Wallas xc duo hob on order with a fixing kit for my 2018 Ducato.
Does anyone have experience connecting this or any other diesel heaters pipework directly to their vans fuel tank please.
In particular is it possible to make the required fuel pipe connection through the Ducato van floor inspection cover or will it require lowering the tank Etc.
I guess the Boxer and Relay procedure might be the same.

Thanks in anticipation.
Nick
 

SandraL

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Our 2005 peugeot had a eberspacher heater. The extra feed was totally seperate from standard peugeot bits and fitted through the hatch above the tank. The dip tube was fitted from outside the tank. When the new hole is drilled in tank, be careful of swarf entering the tank. Do not overtighten the nut as it may deform the tank and cause leak when tank is full and on a slope, guess how I know that!!!!
 
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NickB

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To be clear from inside the van and through the hatch you unscrewed the big nut and lifted the sender and the vans connected pipes a bit clear first.... yes?
 
Last edited:
Sep 2, 2014
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Not in a motorhome, but all the truck night heaters we fitted, (eberspacher, wabco ) were directly fed from the main fuel tank
 
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NickB

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Not in a motorhome, but all the truck night heaters we fitted, (eberspacher, wabco ) were directly fed from the main fuel tank
Yes indeed.... at the moment it still is a Ducato van.

I'm trying to get information about the practicality (or not) of making the connection through the floor hatch to the tank.

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Aubs

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Sep 11, 2018
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I’ve seen people using the Planar heater fuel stand pipe as there’s no need to remove the sender unit as you drill the top of the fuel tank instead.
https://www.pfjones.co.uk/planar-fuel-stand-pipe-807.html

If you do use the stand pipe that’s supplied with the Wallas Ive read you need to remove and refit the sender unit within 5 min as it can send the van electrics a bit funny.

Im waiting for my Citroen Relay to be delivered and also fitting a Wallas and will probably go the Planar pipe route.
 
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NickB

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That's interesting, I'll do a bit of research. .......if not I'll disconnect the battery. Thanks
 
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I’ve not fitted one but there were fitting instruction on I think butlers site which said sender unit needed to be reconnected in 10 mins
 
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NickB

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I'll take a look there as well, but either way I'll disconnect the battery when I do it in case I fancy a cup of tea ;-)
 
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NickB

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So am I right it can be done through the inspection hatch in the Ducato Boxer Relay cab floor? without having to drain and drop the tank?

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NickB

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Don't know, but I do know (it's not petrol) it's good practice to disconnect the battery when doing most things on vehicles.
 

SandraL

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So am I right it can be done through the inspection hatch in the Ducato Boxer Relay cab floor? without having to drain and drop the tank?

Sorry but we sold ourvan 4 years ago. As I remember the fuel pipe for the heater was drilled in the tank, not the area for fuel tank sender, pump etc.
And could be done without dropping the tank.
2005 peugeot van
 

Aubs

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So am I right it can be done through the inspection hatch in the Ducato Boxer Relay cab floor? without having to drain and drop the tank?


I believe it can. There’s a cover in the cab that you remove which exposes the sender.
 

andy63

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Dont know about your van...but ford have an auxillary take off provided on the tank in the form of a small tube that takes a fitting they sell for the connection of things like diesel heaters..
Worth checking with a dealer before you start trying to fit the dip tube that comes with the heater...
Andy.

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Aubs

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Why should it do that.....
If the tank has to be removed for any reason the sender will be out a lot longer than 5 minutes.

I’m not sure of the full in’s and outs but i believe it’s specified by the manufacturer by what I’ve read.
 

pappajohn

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I’m not sure of the full in’s and outs but i believe it’s specified by the manufacturer by what I’ve read.
Maybe so but makes no sense.
There are so many scenarios we're the sensor will be disconnected for an indefinate length of time ...
Fuel tank removal
Battery removal
Sensor failure
Fuse failure
 

pappajohn

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with the ignition of you wouldnt expect the vehicle to be checking sensors? the hatch is there to access the sender unit so must come out that way its got to come out to put the nut on the back of the new fuel pipe

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Aug 6, 2013
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I would take a look under the cab hatch. These days the plate that has the sender and fuel pump attached may have an area where you could fit the heater takeoff. That would be my preferred option (assuming there's room) because you can take the sender plate somewhere to work on it other than on the tank, do it at your leisure, not risk any debris falling in the tank, and (if it all goes pear-shaped) you haven't damaged the tank.

Edit: Here you go - just researched the possibility on Google:

https://www.butlertechnik.com/insta...o-fits-peugeot-boxer-e7458-292199017458-p1704
 

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