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Old 10-07-2014, 10:02 PM   #1
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Question about Oasis Heat

New 2015 Ventana 4037 owner here. Going on short trip to try it out this weekend. Nights are getting pretty chilly out here, so will need to have some heat. Don't like the idea of running the diesil heater all night with that exhaust right below our bedroom slide so will opt for the AC heat probes. Does anyone know if you can run the dual probes when hooked up to 30 amp service? Or will the single probe produce enough heat to keep us warm?
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Old 10-07-2014, 10:48 PM   #2
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We have two heat pumps, it's hit or miss on 30A, mostly seems to be related to how new the campground wiring is.

Several people including Dutch Star Don have relocated their Oasis exhaust to eliminate various issues, you may want to do that as well.
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Old 10-07-2014, 11:50 PM   #3
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In QT's # 3 Dutch Star Don's Mods will have info on the Oasis furnace plus how he moved the exhaust.
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Old 10-08-2014, 03:54 AM   #4
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Quote:
Originally Posted by wyowillie View Post
New 2015 Ventana 4037 owner here. Going on short trip to try it out this weekend. Nights are getting pretty chilly out here, so will need to have some heat. Don't like the idea of running the diesil heater all night with that exhaust right below our bedroom slide so will opt for the AC heat probes. Does anyone know if you can run the dual probes when hooked up to 30 amp service? Or will the single probe produce enough heat to keep us warm?
When it comes to the Oasis, whether it's for hot water or compartment heat, a lot depends on the ambient air temperature and the incoming water temperature. If the temps are in the 50's you should be good, 40's maybe, 30's and below I wouldn't even try. Can you run both AC1 and AC2 on 30 amp service? yes you should be able to. However, your EMS is going to give priority to the heat, so you may not have power to something else and the power they draw is like running a large hair dryer. Have you tried the diesel burner? I can stand right over mine while it's running and not smell the exhaust. I don't think the smell should be something you're concerned about. If it's CO2, remember CO2 is heavier than air.
On my coach the exhaust is between the front and rear slide and I've never had an issue with it.
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Old 10-08-2014, 05:39 AM   #5
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I agree with harleychief. Our Oasis vents out between the Kitchen and Bedroom (Headboard) Slide. We have NEVER smelled the Diesel Exhaust while in our bedroom. If you are concerned about CO2 gasses while you sleep, simply purchase a Plug-in CO2 Detector available at Walmart, Home Depot, Ace Hardware, etc. We have outlets on our bed base which would be a perfect place to install one. But I'll make a bet it never goes off.

The reality is while on 30 amp you have very limited heating options. You can run one Heat Pump (good to 40 degrees), one element in your Oasis which will provide limited heat OR run the diesel burner and get 50,000 BTUs of heat.

If you try to run two heat pumps or two electric elements (probes) and you have a residential frig, you are likely to pop a breaker while you are sleeping and wake to a very cold coach.
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Old 10-08-2014, 07:17 AM   #6
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Any pictures

wyowillie, do you have any pictures of your coach. We have a 2015 4037 on order.
Thanks
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Old 10-08-2014, 11:56 AM   #7
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Newmar installs a CO detector in the bedroom, so you don't need to buy one. I agree that you don't need to worry about the Oasis exhaust.
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Old 10-08-2014, 12:57 PM   #8
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wyowillie.....I'm still learning about my Oasis system, as this is our first coach with a hydronic unit. I find the exhaust to be very clean when running. We're headed to Yosemite for Thanksgiving, so I'll finally get to run the Oasis system through it's paces.

I believe when it comes to 30 amp service, you can turn on the diesel burner and ONE of the Oasis electric units. If it gets to the point where the electric unit can't keep up, the diesel burner will kick in.

I don't/wouldn't feel unsafe about running the Oasis unit all night.
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Old 10-08-2014, 02:04 PM   #9
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Thanks for all the good info. Will try the burner this weekend. Temps have been in the mid twentys so going to need those btus. Kend51 no pictures yet, will try to get some soon. Just picked unit up from Transwest.
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Old 10-08-2014, 02:43 PM   #10
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Use the Oasis - they are amazingly efficient. Newmar wouldn't exhaust the oasis in a dangerous position. The Oasis guys said to the best of my memory, that the unit uses about .44 gal an hour diesel fuel. My unit does not run continuously so I doubt it is even that much. Turn one A/c on and use the heat pump to help out and don't even turn the A/c on with the Oasis is my opinion. By the way, the heat pump isn't much good below 40-45 degrees. You will be toasty with the Oasis.
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Old 10-08-2014, 08:01 PM   #11
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Quote:
Originally Posted by harleychief View Post
...If it's CO2, remember CO2 is heavier than air.
Just a couple of points of clarification (no insult/offense intended):
  • The byproduct of combustion that you need to worry about is CO (carbon monoxide), not CO2 (carbon dioxide). CO is produced by incomplete combustion... where there's not enough oxygen available to combine with the carbon atoms in the fuel (complete combustion should only release CO2 and water). While an extreme excess of CO2 will indeed cause trouble breathing (because it displaces oxygen), it is CO that is the real, silent killer... as it binds very strongly to the hemoglobin in your blood, preventing it from transporting oxygen like it should, resulting in unconsciousness... then death (scary, right?!?!).
  • Contrary to urban myth/legend, CO (carbon monoxide) is NOT heavier than air. It is actually slightly LIGHTER than air and tends to mix and distribute fairly evenly. Most CO detector installation instructions recommend mounting them slightly higher on the wall or ceiling... NOT down low (here's a link to the Nest CO detector FAQ on the topic: https://support.nest.com/article/Sho...near-the-floor). But be sure to follow the instructions for mounting provided by the manufacturer... as each unit can be different.
  • Propane is heavier than air... so propane detectors are mounted close to the floor to detect any leaks as early as possible
Just thought it was important to be clear!
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Old 10-08-2014, 09:05 PM   #12
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Bc, you are right on the money. Thanks for the correction.
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Old 10-09-2014, 06:59 AM   #13
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Quote:
Originally Posted by wyowillie View Post
Thanks for all the good info. Will try the burner this weekend. Temps have been in the mid twentys so going to need those btus. Kend51 no pictures yet, will try to get some soon. Just picked unit up from Transwest.
We have ordered ours from Transwest. I'm pretty sure we have been in your coach, if it was on the lot unsold, as we test drove a 4037, and looked real hard at it. Before we made a decision it was sold.

Beautiful coach!!!
Congratulations
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Old 10-09-2014, 08:27 AM   #14
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Quote:
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wyowillie, do you have any pictures of your coach. We have a 2015 4037 on order.
Thanks
Did you order your coach at the Hershey show?
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