Vent free propane hot water heater? - Ram Promaster Forum
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post #1 of 87 Old 05-12-2019, 02:15 AM Thread Starter
Drq
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Vent free propane hot water heater?

Has any tied or heard of this? https://www.campingworld.com/excel-v...SABEgKQO_D_BwE

It seems amazing. Hoping to use this to have hot water in the winter. Not venting would be a big plus.


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post #2 of 87 Old 05-12-2019, 06:19 AM
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That link is not taking me to the product.
This one? https://www.campingworld.com/excel-v...pm-105040.html

Humm same result. Goes to CW home page? Odd

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post #3 of 87 Old 05-12-2019, 06:51 AM
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It works ok for me. What kind of internet connection do you have in NH?

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post #4 of 87 Old 05-12-2019, 09:29 AM
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I use one of these


which is pretty much the same thing. It works really well, and can easily bring 40F water up to 120F very quickly as long as you keep the flow rate reasonable. I have a thermostatic mixing valve between it and the sink/shower since it is pretty easy to accidentally get the water way too hot (I have seen 190F with a low flow rate).

A few things:

1. Calling it vent free is a bit misleading. The thing still puts out a ton of exhaust, it just comes right out the top. Whenever I use it I turn my roof fan way up to suck out the exhaust. I have measured CO levels coming out of it and the numbers climb very quickly if you don't exhaust

2. The exhaust coming out is quite hot, so you have to mount it in an open place. Mine is just sitting on the wall out in the open. Kind of ugly

3. If you put a thermostatic mixing valve in the line you will have to play with the flow and flame settings so that it doesn't short cycle too badly. With flow set to max and flame set just above medium on mine it works pretty well

I'm quite happy with it. I didn't have a good place to put a tank heater, I didn't have to cut any holes in the van, and it's nice to have on-demand hot water.
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post #5 of 87 Old 05-12-2019, 09:58 AM
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Neither link works for me. What is the name of the water heater?

2015 159" Gas Promaster (RV Build in Progress)
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post #6 of 87 Old 05-12-2019, 10:33 AM
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Both links work in va......looks great....reasonable $$$$....only need bigger van than pmc....note exhaust van needed
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post #7 of 87 Old 05-12-2019, 11:12 AM Thread Starter
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Excel Vent-Free Tankless Propane Water Heater, Low Pressure Startup, 1.6GPM

Thats name. Sorry about the links not working!

I have an ecco temp I was just about to install. It clearly has labeled need for an exhaust system or vent. The one above does not. I found a YouTube video of a full time RVer who has one installed under his kitchen sink and has done so for 10 years. There is clearly no exhaust option in his set up.

https://youtu.be/vOM-O4D_jEY

Not having to vent is a big deal for our potential uses. We are hoping to do lots of winter ski trips so the idea was to use an ecotemp for hot water year round. Now that I see it needs to be vented this would not be an option or we would need to build some sort of temporary vent for when we do want to use it. We would mostly be using it to clean dishes during winter camping. Hot water makes cleaning much easier IMO.


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post #8 of 87 Old 05-12-2019, 11:14 AM Thread Starter
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Quote:
Originally Posted by baitbegger44## View Post
Both links work in va......looks great....reasonable $$$$....only need bigger van than pmc....note exhaust van needed


Where do you see exhaust is needed?

Here is a link. Hope this one works.

https://www.campingworld.com/excel-v...SABEgKQO_D_BwE




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post #9 of 87 Old 05-12-2019, 11:54 AM
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Quote:
Originally Posted by Drq View Post
Where do you see exhaust is needed?

Here is a link. Hope this one works.

https://www.campingworld.com/excel-v...SABEgKQO_D_BwE
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If you use it inside the van you really should crack open a window and turn the roof fan on.

Last edited by phil; 05-12-2019 at 12:02 PM.
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post #10 of 87 Old 05-12-2019, 01:17 PM
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If it's burning propane then there's going to be combustion products. Whether they're coming out of a nicely organized pipe that you can readily route to someplace safe, or just going randomly in whichever direction because it doesn't have a closed combustion chamber (or it does, but it isn't connected to a pipe), doesn't matter, they are still there, and the carbon monoxide is still there.

DO NOT use a fuel burning appliance - of ANY sort - inside an enclosed space. Period.

Relying on an independent exhaust fan is extremely dangerous. If the independent exhaust fan stops for whatever reason, the fuel burning appliance won't know it, and if you are inside with it, you will be going to sleep and never waking up from it.

Just because "someone else did it" doesn't make this a good idea.

The device claims it has an "oxygen depletion safety" shutoff device. That's not the issue, the carbon monoxide is. I would not be putting my faith in an active sensor and the underlying circuits for something this critical.

I would like to see the declaration of conformity for this device (this is the document that declares that the device is compliant with relevant safety standards).

A google search of the claimed brand name of the manufacturer turns out that the company has a staff of "approximately two" and the business address looks like a small commercial unit.

I could speculate on the nature of their business, where this product is made, and on the existence or validity of the above-mentioned declaration of conformity ... but I won't, because I could be wrong. Buyer beware.

Relying for your life on a non-safety-rated active sensing system which was made someplace in the world that is not renowned for taking into account the safety of its customers ... doesn't seem like a good idea.

Last edited by Brian P; 05-12-2019 at 01:20 PM.
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