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... my wife and I don't mind the white noise and don't find it to be too loud ... on cold nights when it stays running to keep up with heat dissipation
Gotcha. As I think my wife would say, "Honey, that's just the sound of warmth!" :)
 

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Have had a number of RV's over the last 40+ years with heaters WAY louder than my Espar Diesel unit- I have no issue with the internal sound of it.
The exhaust is much quieter than some RV heater exhausts, but I do have the muffler in the exhaust line.
 
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Great writeup -- thanks!

In your blog post, you mention that the noise, from fuel pump, blower, and intake/exhaust, is too much. You also say you had some ideas about fixing this. I didn't find the next promised article on your site -- did I miss it somehow? Were your ideas successful?

(I also saw that Johnnydanger had this to say. So I guess fan noise is subjective. :)
We did the following:

– Fuel pump: we inserted a closed-cell foam between the P-clamp holding the pump and between the van structure. We followed these recommendations as well: (click here).
– Exhaust: we installed this silencer: (click here)
– Intake: there is also a silencer available, but we missed it when we did our order… (click here)
– Fan: we did nothing so far, because the fan makes a constant noise and we don’t really care about that.

Does it make a difference? Yes, but not THAT much. Still worth doing it though.
Since our last comment about noise, we did some progress with the van interior and it has helped the Webasto noise to the point where we mostly just hear just the fan running. This is a constant noise, so it does not bother us.
For people OUTSIDE the van, it is still pretty noisy (we sometime camp with people with tent).
 

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just saw (because i'm subscribed :) your new followup blog entry on this noise stuff, with pictures (http://faroutride.com/air-heater-noise-reduction/). did the erratic "ticking" noise from the fuel pump go away, with the 90 degree elbows on the fuel lines? i find their suggested fix to be fascinating, so i'm curious!

paul
:)

It did NOT go away. I'm not sure if it really made a difference; maybe a little? According to Webasto, it can reduce the noise up to 10dB. Huh. But, it's very easy to do, so what the heck!

The exhaust silencer definitely made a difference though.
 

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I've got some more Webasto install questions:

1) Folks have described the fan noise as "continuous". Is it really always on? I can imagine why that might be desireable, but when the the thermostat says there's no more need for heat, I would have expected the fan to shut off.

2) The Webasto installation guide describes taking intake air from either the cabin (which I think most folks here do) for from the outside (which requires adding an extra temperature sensor, not to mention an extra hole in the van). I can imagine advantages to both configurations, but I'd think one would optimally want both -- just like the "Recirc" setting for the dash heat. Faster warmup with recirc, but fresher, perhaps drier air, when pulling from outside the van. Has anyone done this?

3) The installation guide I found (which I can't seem to find again right now) seemed to recommend horizontal mounting, but implied that wall mounting would be okay. I'm not sure how that would work in practice -- mainly, I can't tell if it's an absolute requirement that the intake/exhaust ports be physically isolated from the interior space of the van. I suspect floor mounting will work for me -- but I'm curious about other options.

paul
 

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I've got some more Webasto install questions:

1) Folks have described the fan noise as "continuous". Is it really always on? I can imagine why that might be desireable, but when the the thermostat says there's no more need for heat, I would have expected the fan to shut off.



2) The Webasto installation guide describes taking intake air from either the cabin (which I think most folks here do) for from the outside (which requires adding an extra temperature sensor, not to mention an extra hole in the van). I can imagine advantages to both configurations, but I'd think one would optimally want both -- just like the "Recirc" setting for the dash heat. Faster warmup with recirc, but fresher, perhaps drier air, when pulling from outside the van. Has anyone done this?



paul
1)We observed that above 40F outside, the fan will sometime stops; below 35-40 the fan is always on. The fan speed seems to be variable, so when the need for heat is low, the fan will run low instead of shutting down. This is what i conclude playing with the rheostat.

2)It's been discussed on the Sprinter forum: http://sprinter-source.com/forum/showthread.php?t=52317. Here is the diverter part: http://www.heatso.com/regulating-flap-valve-y-branch-60mm/

Cheers!
 

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@antoine Thank you for the explanations and follow-up particularly on the noise abatement efforts.
I have seen reference to mounting the furnace under the vehicle. Would tucking all that in a box under the vehicle significantly reduce the noises for someone in the vehicle. Does anyone have experience with mounting the furnace and fuel pump in an enclosure under the vehicle? thanks
 

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I know this is an old post - but I am undertaking the Aux Fuel port hookup - I am a mechanic - no access to a lift, but I do have floor jacks. I am 100% comfortable with the procedure but wanted to know what to expect when removing the aux fuel port cap - how does it disconnect ? Is it easy to do by feel - as I doubt with the tank lowered slightly I'll be able to actually see it. Seems like I'll have to work it off with my hands bent at an angle. I have the adaptor from Ford in hand - from what I understand the cap is designed the same way as the new port adaptor - but I can't really tell by the way its designed (Ford designs some seriously wonky stuff) how it is removed. Looks like you just push the new one into place over the port - but how do I remove the cap ? Do I have to spread the yellow cage apart ? How easy is that to do with big hands and limited space ??

Info from someone who's actually performed the install would be GREATLY appreciated !
 

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I know this is an old post - but I am undertaking the Aux Fuel port hookup - I am a mechanic - no access to a lift, but I do have floor jacks. I am 100% comfortable with the procedure but wanted to know what to expect when removing the aux fuel port cap - how does it disconnect ? Is it easy to do by feel - as I doubt with the tank lowered slightly I'll be able to actually see it. Seems like I'll have to work it off with my hands bent at an angle. I have the adaptor from Ford in hand - from what I understand the cap is designed the same way as the new port adaptor - but I can't really tell by the way its designed (Ford designs some seriously wonky stuff) how it is removed. Looks like you just push the new one into place over the port - but how do I remove the cap ? Do I have to spread the yellow cage apart ? How easy is that to do with big hands and limited space ??

Info from someone who's actually performed the install would be GREATLY appreciated !
If I recall correctly you squeeze then pull.
You could stick a phones camera in there and take a picture of the connector to get a
idea of what you dealing with.
 

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If I recall correctly you squeeze then pull.
You could stick a phones camera in there and take a picture of the connector to get a
idea of what you dealing with.
There are blue indents on each side of the cap - squeezing them moves the points that attach to the barb on the tank away from each other - releasing it from the barb - seems simple enough - the question is - how difficult is it to do while squeezing a hand in between the top of the tank and the vehicle body. With my fitting in hand, I pretty much need 2 hands to push the indents and even then I barely see any kind of movement on the barb retainers. Almost seems like you need a tool - makes me nervous knowing it may be a huge challenge getting it to release with one hand. I can forsee a lot of cursing.

Installing the new fitting seems simple - looks like I just push it onto the barb and it will click into place.


142919
 

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I only partially lowered my tank and reached in and poped it off one handed. Not a big deal. Like a couple of minutes to figure out what I was doing by feel and pulling it off. Used the aux port your putting on as a reference as to how it attaches and its no issue.
 

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I only partially lowered my tank and reached in and poped it off one handed. Not a big deal. Like a couple of minutes to figure out what I was doing by feel and pulling it off. Used the aux port your putting on as a reference as to how it attaches and its no issue.
Sweet- OK, sounds good. That was the answer I was looking for. Appreciate the info !
 
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