Generator exhaust pipe extensions

lvmci · January 22, 2018, 08:13:43 PM

Hi All, George Myers article, "power plant poisoning", doesn't seem to take into account our own roof top fantastic fan vents. I raise the question, would any breeze, or no breeze gather the exhaust smoke into our own coach, if the exhaust extension from the generator was only two feet above the roof? lvmci...

scanzel · January 23, 2018, 04:00:55 AM

I suppose that there is always a chance of picking up some of the fumes. Wind direction, how close the roof vent is to the exhaust are you venting out or drawing in fresh air. Our fan works both ways so there could be a chance of bringing in fumes. My black/gray tank vent is about 3' away from my fan so it is possible to pick up that smell too.

chessie4905 · January 23, 2018, 05:02:07 AM

If your nose doesn't detect, install a carbon monoxide detector.

Jim Eh. · January 23, 2018, 08:45:05 AM

Could you not struggle with an extra top extension only when you determine wind direction to be an issue?

buswarrior · January 23, 2018, 11:47:17 AM

Every busnut needs a carbon monoxide detector!!!

Yes, the exhaust gases from your own, and your neighbours' can find their way inside the coach.

You can't smell CO, it is a silent killer.

Safety first, anything onboard burns a fuel, go get one from your favorite big box store, or online.

Happy coaching!
Buswarrior

PP · January 23, 2018, 05:20:36 PM

Quote from: buswarrior on January 23, 2018, 11:47:17 AM
Every busnut needs a carbon monoxide detector!!!

Yes, the exhaust gases from your own, and your neighbours' can find their way inside the coach.

You can't smell CO, it is a silent killer.

Safety first, anything onboard burns a fuel, go get one from your favorite big box store, or online.

Happy coaching!
Buswarrior

Just remember that those things have expiration dates just like tires. I picked up a bunch that were discounted one time only to discover they only had about a year left on them,

Something about the half-life of the radio active particle in them. We have one now that doubles as a night light and screeches to let us know the power has gone off and it's switching over to battery, going to miss it when it has to be replaced

Yeah right, Will

Geoff · January 23, 2018, 05:49:53 PM

I've never had a problem with the generator exhaust, since my genset sits above the engine and exhausts out the roof. However, my Webasto exhausts down from the third bay so I made a 90 degree elbow to channel the exhaust to the side. At one time I had a complete system to exhaust it above the roof, but keeping the windows closed works just fine.

RV stores sell an above the roof exhaust system for generators which also works with a Webasto/Aqua Hot.

tuccitown · January 24, 2018, 10:07:11 AM

Hi,

Anybody have any experience with these:

https://www.amazon.com/Camco-Gen-Turi-Generator-Exhaust-Disconnect/dp/B000BUU5XG/ref=sr_1_1?ie=UTF8&qid=1516746765&sr=8-1&keywords=generator+exhaust+venting+system

This seem to allow a mix of exhaust and fresh air to be released at the roof line of the coach.

Thanks,

Jack

bevans6 · January 24, 2018, 10:33:18 AM

I had three high end powered detectors in my house, they said to replace every 10 years. Yeah, right, I like most people said. They turned out to have a clock in them, they turned off and lit their siren after ten years plus a couple of days. All three within a week. I learned that lesson! I replaced them with even higher end models that have a 10 year back-up battery that never needs to be changed.

Jim Eh. · January 24, 2018, 09:12:31 PM

Quote from: tuccitown on January 24, 2018, 10:07:11 AM
Hi,

Anybody have any experience with these:

https://www.amazon.com/Camco-Gen-Turi-Generator-Exhaust-Disconnect/dp/B000BUU5XG/ref=sr_1_1?ie=UTF8&qid=1516746765&sr=8-1&keywords=generator+exhaust+venting+system

This seem to allow a mix of exhaust and fresh air to be released at the roof line of the coach.

Thanks,

Jack

Neat idea. The elbow should extend further into the PVC to ensure the venturi effect. Any slight crosswind and that gap will allow the exhaust to blow back and not up the stack.

One could very easily fabricate their own for a lot less than what these are advertised for.

sledhead · January 25, 2018, 05:20:46 AM

this is what I did to get rid of the boiler diesel stink . no more stink !

006_zpsmfe2kwmf.jpg

https://photos.app.goo.gl/CBo0b1en6dH0RCWI2

2.25 " stainless steel pipe 1 90 deg . and 2 custom mounts total cost was $125.00

no problems as yet

dave

luvrbus · January 25, 2018, 05:37:40 AM

One has to be careful adding a pipe to the Webasto or Pro/Heat they have very strict limits on the length and size of the exhaust pipe to remove the 600 degree exhaust temperature they produce,I was told not to add a stack

Geoff · January 25, 2018, 08:48:43 AM

I don't know, I used a stack above the roof for the Webasto and it didn't hurt anything. How much back pressure could a 1 1/2" open pipe create?

luvrbus · January 25, 2018, 09:26:07 AM

Quote from: Geoff on January 25, 2018, 08:48:43 AM
I don't know, I used a stack above the roof for the Webasto and it didn't hurt anything. How much back pressure could a 1 1/2" open pipe create?

I don't have a idea just what Webasto told me and the instructions do limit the exhaust in length

buswarrior · January 25, 2018, 10:04:02 AM

I have seen busnuts popularly using downspout piping for temp roof exhaust extension use.

The trick with extending a Webasto pipe, is upsizing the pipe on the extension.

Back pressure is a big no-no with any of the coolant boilers.

happy coaching!
buswarrior