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Old 07-22-2013, 06:24 PM   #1
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Dometic A/C Question

Does anyone have any idea how to determine the model or model number of the Dometic A/C unit without the associated manual. We have a 2011 Wildwood 22RKS. TT box is 24' and the unit is ducted. We're trying to size a generator that will run the A/C. The Dometic 3000 generator says it will do the job but I'm just not sure. If I knew the model of the A/C unit I could verify the specs.
Thanks for the help!
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Old 07-22-2013, 06:28 PM   #2
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Take the filter off and there's a tag on the side of unit.
Or up on roof take cover off there's another tag up there.


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Old 07-22-2013, 06:31 PM   #3
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Is that 3000 running or surge watts?
A 3000 watt running amp gennie is only 25 amps and a/c would be all you could run.
With converter running.


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Also look at this and add up you amps.
normal appliance amp draws

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Old 07-22-2013, 06:48 PM   #4
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You guys are GOOD!!
Model number found
Understand the issue of A/C only. I'm trying to get the genny that will do the job but won't break the bank or my back. Reviews on the 3000 are good and confirm it will run the A/C.
A/C breaker is 20a rated so I'm thinking I should be OK...barely
Thanks for the help as always
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Old 07-22-2013, 07:04 PM   #5
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Originally Posted by Canonman View Post
You guys are GOOD!!
Model number found
Understand the issue of A/C only. I'm trying to get the genny that will do the job but won't break the bank or my back. Reviews on the 3000 are good and confirm it will run the A/C.
A/C breaker is 20a rated so I'm thinking I should be OK...barely
Thanks for the help as always
BIG caution. The breaker says 20 amps, but it will handle spike amps well over that (over 30 amps) for many seconds without opening. It takes time for the bimetallic breaker to overheat and trip open.

The generator's inverter on the other hand is solid state and will trip offline 0.1 amps over its limit.

Never run a generator on "Economy" when using the air conditioner. Start up current can easily trip off a generator rated to run most air conditioners.
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Old 07-22-2013, 07:27 PM   #6
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Also if it does struggle to start a/c here is a cool mod to help lesson the load on gennie.
Less then $10.00 mod.
air conditioner for generator mod


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Old 07-23-2013, 09:23 AM   #7
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Once again very impressed with the experience and help on this forum. Good heads up on the delay differences between the analog electrical service breaker and the digital overload protection on the genny. As for the mod, I notice my A/C fan starts first, runs for a minute or so then the compressor kicks in. Does that sound right? Seems like the mod sets up so the compressor starts first then the fan. All this so the DW can have A/C and I can have a little PAQ (peace and quiet). I should have never sold the tent
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Old 07-23-2013, 09:32 AM   #8
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Originally Posted by Canonman View Post
Once again very impressed with the experience and help on this forum. Good heads up on the delay differences between the analog electrical service breaker and the digital overload protection on the genny. As for the mod, I notice my A/C fan starts first, runs for a minute or so then the compressor kicks in. Does that sound right? Seems like the mod sets up so the compressor starts first then the fan. All this so the DW can have A/C and I can have a little PAQ (peace and quiet). I should have never sold the tent
My mod turns compressor on first then fan later yes.
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Old 07-23-2013, 09:47 AM   #9
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I have the Dometic 3000, and it will run my 13.5k Dometic A/C just fine. Haven't tested how much more it will run, but I was thinking we had lights on(which are 12v) and I think the ceiling fan may have been on also.
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Old 07-23-2013, 10:00 AM   #10
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I have the Dometic 3000, and it will run my 13.5k Dometic A/C just fine. Haven't tested how much more it will run, but I was thinking we had lights on(which are 12v) and I think the ceiling fan may have been on also.
I'd feel more comfortable with a 3000 running watt gennie.
Imo anything less is getting sketchy on how much you can run.
There's people whom swear they run with a 2000 watt and works fine and probably does.
That has to run the gennie at max all the time and over working the thing to the bone.
The other thing to consider is if your pushing the limits on the gennie wattage you may be in low voltage situations that could harm your a/c or more.
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