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Old 08-19-2016, 07:00 PM   #21
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Here are some more photos and part numbers i used.

I have the ccc2 thermostat and added another zone. So i have 3 zones now.



With both ac running on high fan im pulling 27.6 amps on the one leg and 13.1 on the other.

I feel good about not being overloaded specially since they was all on high fan.

Any questions?


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Old 08-19-2016, 09:23 PM   #22
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The problem is the blizzard 15k is a new style with the return ducts ran width wise of the camper. The return for the 13500 is in the roof. So its different.

I completed the instal today and with all 3 units running and set to 55 the bedroom was 63 the kitchen was 65 and the living room was 64.

It was 92 with alot of humidity but i fee there is enough ac now for a hotter day.




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Holy COW! No you're talking my language. I don't handle the heat well. I go out and work in it, hike and bike in it ok but when it's time to veg and have a beer or 6 I want to be frosty! So to get my head wrapped around this, you removed the rear vent and didn't have to do anything other than run the 12/2 w/gnd to the same breaker that runs the fireplace, then run a thermostat wire to the thermostat and finally cut the vent wall so that it ran into the existing ducting? That about sum it up?
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Old 08-19-2016, 09:28 PM   #23
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Holy COW! No you're talking my language. I don't handle the heat well. I go out and work in it, hike and bike in it ok but when it's time to veg and have a beer or 6 I want to be frosty! So to get my head wrapped around this, you removed the rear vent and didn't have to do anything other than run the 12/2 w/gnd to the same breaker that runs the fireplace, then run a thermostat wire to the thermostat and finally cut the vent wall so that it ran into the existing ducting? That about sum it up?


Thats real close!

But i left the fireplace. I went to lowes hardware and got another HOMT breaker that has 2 20 amp breakers in one.

I took out a single 20 amp for the ac that was there and replaced it with a duel 20 amp and im feeding the new ac from there as well.

I also ran a cat 5 wire from the new ac to the front ac to get to the thermostat.

But that is all. The only other cutting was the vent 2x4 or whatever it was to get access to the duct work. I then taped it out to the ac hole as seen in the photo here.




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Old 08-19-2016, 11:14 PM   #24
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My only hold up on doing this is wondering whether or not just replacing that 15K unit with another one would fix the issue. I would have almost liked to have seen you drop the new one where the existing unit was before installing it in back.
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Old 08-19-2016, 11:17 PM   #25
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Nice job though if they can't get me sorted out I may wind up doing the same thing. How long was the cat 5 you had to get and do you have pictures or a write up on where you connected it etc.? You used the existing black dometic thermostat correct?
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Nights Camped: 2010 = 14/11 = 27/12 = 13/13 = 10/14 = 30/15 = 47/16 = 30/17 = 13
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Old 08-20-2016, 08:37 AM   #26
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My only hold up on doing this is wondering whether or not just replacing that 15K unit with another one would fix the issue. I would have almost liked to have seen you drop the new one where the existing unit was before installing it in back.


Yea you cant do that. The orginal 15k has a different supply and return system on it. Without alot of modification it wouldnt have been easy.




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Old 08-20-2016, 08:39 AM   #27
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Nice job though if they can't get me sorted out I may wind up doing the same thing. How long was the cat 5 you had to get and do you have pictures or a write up on where you connected it etc.? You used the existing black dometic thermostat correct?


Sure ill help out. I just had some left over cat 5 off some ip camera installs that i did. It was 60 feet or so.

I wired it to the rj11 standards but i removed the brown wire pair. Just have to make sure your using a straight thru cable. You dont need 12volts to the new ac just one of them which the factory already has.


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Old 08-20-2016, 11:54 AM   #28
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I'm interested in hearing more about how you fished the wiring from the panel to the back of the RV. Is it all behind the wall / ceiling?


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Old 08-20-2016, 08:06 PM   #29
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I'm interested in hearing more about how you fished the wiring from the panel to the back of the RV. Is it all behind the wall / ceiling?


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2500HD Chevrolet

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To get from the basement to the attic there was a hide away cabinet i took out and went behind in our bedroom. From there i took vents out and lights out and took a fish tape to one light to a vent and to a light or what ever i could do to get there.


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Old 08-20-2016, 10:22 PM   #30
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I think it goves a e1 code because water gets in the connector and corrodes the connections.

You can and should use Dielectric grease in any and all electrical connections. It will keep water out as well as corrosion on contacts.
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