Mitsubishi Delica Owners Club UK™

[Andy W]

I have decided to remove my Webasto water heater as it takes too long to give heat and draws too much from the battery. The Webasto is mounted under the air filter in the engine bay but I think it will be to hard to put an air heater there to keep it dry and to run the ducting into the cabin, so I am looking at mounting it in the tiny space I have left behind the drivers seat.
I'm guessing someone has already done this, so rather than reinventing the wheel, how have you set it up to get the combustion air in and exhaust out whilst keeping it watertight for those things you may go swimming?
Cheer Andy
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1994 LWB Super Exceed L400, Black & Silver

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[ArthurArthur]

Hi. I have installed in the spot you said, behind driver`s seat.
I had to extend air intake to go lower then the floor level, next to the wall. There is a confined space too narrow for air filter.
Exhaust goes above car exhaust but below metal plates. I`m planning to extent with an extra pipe to have a fumes exit at the far rear. I have the heater 80 mm above the floor to keep fuel hose and air intake hose inside the cab. Besides, the floor is not flat.
If you already installed, where do you have a fuel tank please?

[Andy W]

Hi Arthur, I haven't installed mine yet but have a Webasto water heater I installed a few years ago which I will replace with the air heater.  With the Webasto, I set it up to draw directly from the main fuel tank so that didn't have to worry about topping up a small fuel tank regularly and the concerns of where to put it or spillages when topping it up.
Andy
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1994 LWB Super Exceed L400, Black & Silver

[andyman]

On my L300, I've fitted a 2kw one under the floor between o/s torsion bar and gearbox. Its position is well sheltered from even the severest road spray, although I don't do deep wading (no snorkel!) The exhaust comes out under the sill. Only the warm air pipe, fuel pipe and wires go inside, just behind the engine hump. The tank is fitted inside, next to the sliding door, so I can fill it easily. The leisure battery is in front of the o/s rear wheel arch, but behind the driver's seat is another good place.
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Andy C L300 Super Exceed - over 100 smiles per gallon!

[Andy W]

So have you fitted it into a protective box of some sorts or is it open to the elements?
Andy
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1994 LWB Super Exceed L400, Black & Silver

[andyman]

No, it's open to the elements, but with those big wrap-around mud flaps, it doesn't catch splashes. By contrast, the heater's exhaust terminates half way along under the sill, and catches all sorts of crud, but as it's st. steel, it doesn't matter. I know folks with other types of van fit splash guards or boxes. So far so good! Both the cabin air inlet and burner inlet pipe face backwards.
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Andy C L300 Super Exceed - over 100 smiles per gallon!

[Andy W]

I started down the track of fitting it underneath but thought it would be too exposed so then thought in the engine bay under the air filter in the place of the Webasto that is currently there but decided running the ducting would be too hard so settled on behind the drivers seat.  That's the last place I wanted it but felt that was the best option but you've got me thinking again!
You can buy stainless boxes to mount the heaters under a VW camper, so I will have a look at those and see if they would be a good idea.
Andy
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1994 LWB Super Exceed L400, Black & Silver