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03-28-2023, 10:45 AM
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#1
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Junior Member
Join Date: Dec 2019
Location: Georgia, VT
Posts: 23
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Adding second A/C unit
We have a 2019 Eagle 321RSTS that I was told was "prep'ed" for a second unit in the bedroom. Has anyone done this? Any advice
Thanks, Dan
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Dan & Candy
2019 Jayco Eagle
2016 Ford F250 Platinum 6.7 Diesel
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03-28-2023, 10:51 AM
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#2
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,277
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It has been a few years since I recall anyone posting they have done it. But it is doable. I recommend contacting Jayco, and asking for roof and 120V schematics.
Also if you have the 50 amp service entrance, than it should be prep'd for for a second AC.
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2012 Jayco X23B
2020 Ram Laramie 3500 SRW Air ride 50Gal fuel tank.
2007 Dodge Dakota Quad Cab (retired from towing)
Equal-I-zer 4-Point Sway Control
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03-28-2023, 10:56 AM
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#3
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 14,262
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Pull the trim on the vent and you will see the wiring if you have the prep.
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 DISNEY LOVERS
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03-28-2023, 11:04 AM
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#4
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Junior Member
Join Date: Dec 2019
Location: Georgia, VT
Posts: 23
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Quote:
Originally Posted by Grumpy
Pull the trim on the vent and you will see the wiring if you have the prep.
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Thanks good idea, It is a 50A and I expect to find AC wiring up there but was wondering if it tied into the main T'stat.
Thanks, Dan
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Dan & Candy
2019 Jayco Eagle
2016 Ford F250 Platinum 6.7 Diesel
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03-28-2023, 11:25 AM
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#5
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 14,262
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Quote:
Originally Posted by Jayco321RSTS
Thanks good idea, It is a 50A and I expect to find AC wiring up there but was wondering if it tied into the main T'stat.
Thanks, Dan
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The thermostat wiring should be there too, but the other end will be in the wall usually near a light switch or slide out switch. You'll probably need to fish for it.
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DISNEY LOVERS
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03-28-2023, 04:36 PM
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#6
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Senior Member
Join Date: Aug 2019
Location: Avon
Posts: 489
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If it is pre-wired you might find a circuit breaker marked 2nd A/C. Mine has one for a 3rd A/C unit.
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Keith and Lisa Ward
2019 Pinnacle 36FBTS
2021 Ford F350 XLT CC LB DRW 6.7L Diesel
Demco 18K Autoslide Hitch and Timbrens
2019 Ford F350 SB 6.7L Diesel (Gone)
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03-29-2023, 08:51 AM
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#7
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Junior Member
Join Date: Dec 2019
Location: Georgia, VT
Posts: 23
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Thanks to all your replies. I have the extra 20A breaker and wiring seems to be there. Have not found the T'stat wire but I'm sure I can fish that out.
Thanks again, Dan
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Dan & Candy
2019 Jayco Eagle
2016 Ford F250 Platinum 6.7 Diesel
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03-29-2023, 11:46 AM
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#8
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 14,262
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Quote:
Originally Posted by Jayco321RSTS
Thanks to all your replies. I have the extra 20A breaker and wiring seems to be there. Have not found the T'stat wire but I'm sure I can fish that out.
Thanks again, Dan
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Is there a "T stat" wire up in the vent? If not it is designed for an a/c with the controls on the unit itself.
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03-29-2023, 03:54 PM
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#9
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Junior Member
Join Date: Dec 2019
Location: Georgia, VT
Posts: 23
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Today I pulled the vent cover off and there is both the AC power romax and the T'stat wire. Interesting I was surprised to see the duct openings that join in the rest of the A/C duct work. I'm guessing the second unit must be a slave. I'll have to trace the T'stat wire and see if it goes to the existing T'stat. I'd like to completely understand before I order a new unit. I'll probably install in the summer when we get back home to Vermont, if it ever warms up there. I'll post my progress in case someone else has one of these.
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Dan & Candy
2019 Jayco Eagle
2016 Ford F250 Platinum 6.7 Diesel
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03-29-2023, 05:08 PM
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#10
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Senior Member
Join Date: Nov 2011
Location: Where ever the boss says we're going.
Posts: 14,262
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Quote:
Originally Posted by Jayco321RSTS
Today I pulled the vent cover off and there is both the AC power romax and the T'stat wire. Interesting I was surprised to see the duct openings that join in the rest of the A/C duct work. I'm guessing the second unit must be a slave. I'll have to trace the T'stat wire and see if it goes to the existing T'stat. I'd like to completely understand before I order a new unit. I'll probably install in the summer when we get back home to Vermont, if it ever warms up there. I'll post my progress in case someone else has one of these.
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Definitely does not go to the existing stat, it's in the wall since they normally run independently. I'd contact JAYCO and ask for the wiring schematic.
https://www.jayco.com/contact-towable-service/
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04-04-2023, 01:23 PM
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#11
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Senior Member
Join Date: Mar 2017
Location: SW Fl
Posts: 118
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I basically have the same unit as yours, and my T-stat is centered under the light switch 55" off the floor to the center.
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04-04-2023, 01:37 PM
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#12
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Senior Member
Join Date: Dec 2015
Location: Arizona
Posts: 2,291
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2nd AC
Quote:
Originally Posted by Jayco321RSTS
We have a 2019 Eagle 321RSTS that I was told was "prep'ed" for a second unit in the bedroom. Has anyone done this? Any advice
Thanks, Dan
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We have 2nd ac way to noisy for us to sleep at night.
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04-05-2023, 11:58 AM
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#13
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Junior Member
Join Date: Apr 2021
Location: Jasper
Posts: 5
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2nd A/C
ours is 2019 25.5 REOK and I am ready to do the bedroom a/c upgrade as well. It has 2nd a/c prep and I have verified breaker/wiring/tstat wires are there. Just curious, what a/c unit does anyone recommend, I really need a lower profile due to clearance where I store the trailer so I have looked at Coleman Mach 8 and RecPro low profile, any info is appreciated, thanks
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04-05-2023, 02:28 PM
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#14
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Senior Member
Join Date: Jul 2017
Location: bridgman
Posts: 231
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I would recommend a low profile unit, I put in a mach 8 and am very pleased.
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04-05-2023, 03:09 PM
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#15
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Junior Member
Join Date: Feb 2019
Location: Still Pond
Posts: 13
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Just did this last summer, Jayco made it very easy plug and play. The hardest part is getting the second unit on the roof. (Make sure to protect your roof to avoid damage) Remove your bedroom light switch, the T-stat wire should be located to the right of the light switch hole.
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04-08-2023, 08:41 AM
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#16
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Junior Member
Join Date: May 2022
Location: PEWAMO
Posts: 1
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I have a 2021 28.5 RSTS that is prepped for the 2nd A/C. I now wish that I'd had it done at the dealership for $800, but we got rid of a 2004 Laredo for this and I thought that a newer unit with a 17 year newer A/C would suffice. Not so much. I am going to try the plenum mod before I buy the 2nd A/C. I got into the bedroom vent and the wiring and duct is there, so that seems easy enough. My question is, my 5er has the Jaycommand by BMPro so how does that connect? The bedroom already has the thermistor on the wall, so does anybody know how to connect to the NODE, and do I still need to fish wires out of the wall? TYIA
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2021 Eagle HT 28.5RSTS
2011 Chevy Duramax
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