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Old 03-17-2017, 07:02 AM   #1
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Oasis questions...

I'm interested in insight on the following two questions:

1) Any rough guesstimates or rule of thumb on diesel burner usage per day or per hour? I know it all depends on ambient temperature, water usage, etc, but it would be good to have some rough guidelines. For example on my old coach, I calculated roughly 1 gal/hr for heavy onan diesel generator use and 1/2 gal/hr for medium use.

2) I'm interested in keeping my coach unwinterized and full of fresh water in a storage barn for a few days with no heat when the ambient temperature doesn't get below 25 deg F. I see that AC1 pulls about 11-12 amps when energized, so I'm thinking that the 20 amp outlet might be adequate. I'm thinking of setting zone 1 and 3 on the lowest setting (40 deg) and allowing the basement zone to self actuate. It seems that the fans associated with the Oasis run off 12 volts and consume little power. It also seems they don't run unless there is some level of heat in the Oasis boiler. My question is, what do you think will happen IF the power goes out or the breaker trips? Do you think the coach batteries will get drained? I am close enough to check up on the situation daily.
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Old 03-17-2017, 08:36 AM   #2
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I can't answer question #1, but if draining your batteries is a concern you can turn on the AGS. Not sure if that helps you or answers your question.
On 1/25/15 senior member Mike Griffin did a great write up on the Oasis system that may also help with any question you may have.
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Old 03-17-2017, 09:58 AM   #3
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Quote:
Originally Posted by 96kpmjmm View Post
I can't answer question #1, but if draining your batteries is a concern you can turn on the AGS. Not sure if that helps you or answers your question.
On 1/25/15 senior member Mike Griffin did a great write up on the Oasis system that may also help with any question you may have.
Kevin
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Thanks! Not sure starting the generator in an enclosed storage barn would be a good idea, but do you know Mike's username? I'd like to track down that post.
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Old 03-17-2017, 12:39 PM   #4
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Not a good idea to use generator if enclosed. mike griffin one word. I found it well written. Posted 1/24/15. Hope that helps
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Old 03-17-2017, 01:24 PM   #5
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The Oasis tech support folks are here:
RV Hydronic Heater Forum
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Old 03-17-2017, 02:27 PM   #6
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When I left the heat on at 55 while plugged into 50 Amp service, I was burning about 25 gallons a week. Ambient temperature was roughly what u described.
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Old 03-17-2017, 02:32 PM   #7
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When I left the heat on at 55 while plugged into 50 Amp service, I was burning about 25 gallons a week. Ambient temperature was roughly what u described.

Could you have just used the AC instead of the burner and saved the fuel?
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Old 03-17-2017, 08:54 PM   #8
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The electric heaters, including the AIR conditioner heat pumps are not enough for sub freezing temps. I eventually got a few oil-filled electric heaters and was able to heat the inside and basement with them.
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Old 03-18-2017, 09:38 PM   #9
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With the ambient temperature at about 35 degrees F with gentle winds and with only AC1 on, the best it could manage was ~50 degrees. The thermostat would call for heat, but the boiler would frequently need to play catch up, and the hydronic fans would not run and just wait until the fluid was warm enough. I suspect that AC1 was pulling 11-12 amps all night.
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Old 03-18-2017, 09:55 PM   #10
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Diesel has 138,690 BTU's per gallon. How many BTU's is the burner? My AquaHot is 65,000 BTU's. So it can run continuously on 1 gal of diesel for just over two hours. The amount of heat required for each rig is dependent on a lot of variables, one of which is how well insulated is you RV? Dual Pane windows? How warm do you like it? How much cold air infiltration is there? Etc......
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