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04-11-2015, 09:32 PM
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#1
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Junior Member
Join Date: Sep 2012
Location: Toccoa
Posts: 19
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question about 2 AC units
I have a Sandpiper 30iok select with 2 AC ducted units. I was under the impression that the main unit (zone 1) controlled the living,kitchen, and rear bed room. The front unit (zone 2) controlled the front bedroom. While I was camping at a campground with only 30 amp hook up I was only able to run one unit at a time. I noticed that when the main unit was running I was getting air out of all vents including the front bedroom. When I cut the main unit off and the zone 2 unit on I noticed I'm still getting air out of all vents. Just curious about how the units work together when I'm able to run both units together?
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04-11-2015, 09:45 PM
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#2
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Senior Member
Join Date: Dec 2014
Location: St Simons Island, GA
Posts: 1,234
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Sounds like someone forgot to install a block in the vent system. If your individual vents open and close, you will probably have to go with that. Otherwise you can pull one of the vents between the two zones and install your own block. That will keep air where it belongs.
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Aviator Wright Flyer #1919
Army Pathfinder Vietnam, 3 tours
DAV, MOPH, VFW, NRA, 1stCav. ABN
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04-11-2015, 10:13 PM
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#3
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Senior Member
Join Date: Feb 2015
Posts: 212
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We're on our third ducted AC system with multiple ACs and all three got circulation through the ducted system from the main AC to all outlet vents. I'm not so sure about the bedroom ACs.
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04-12-2015, 09:05 AM
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#4
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,558
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My 2015 Wildcat has "NEW! Dual Ducted Air Conditioner "Racetrack" with Triple Insulated, Foil Wrapped, Light Weight Ducts" which allows (as a feature, not a bug) each unit running by itself to send cool air to all vents. This is helpful at a 30a only site since I can run either unit and cool the entire trailer although at a reduced capacity.
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2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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04-12-2015, 11:48 AM
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#5
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Member
Join Date: Dec 2014
Location: levittown,pa
Posts: 33
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what i had them do
i knew the ducting was all tied together, when i had them install bedroom ac. i opted for direct vent.
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04-12-2015, 12:29 PM
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#6
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Site Team
Join Date: Nov 2011
Posts: 4,499
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Mine blow thru all vents also. When weather temps allow I run bedroom during the day and main a/c at night for quieter operation. Can close unneeded vents.
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2018 Forester 3011 DS
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04-12-2015, 02:07 PM
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#7
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Senior Member
Join Date: Jan 2013
Posts: 194
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To my knowledge each one blows through all vents, it is just that the most volume would come through the ducts that are closest to the AC unit that is running.
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VMI'62
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04-12-2015, 02:27 PM
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#8
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Blog: RVroadtripper.com
Join Date: Jul 2012
Location: Near Dallas Texas
Posts: 1,000
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I am glad its this way. I can run my Champion 3100 inverter which can only run one A/C and still get coll in all areas.
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2016 Wildcat 295RSX - 2015 GMC 2500HD DblCab Duramax/Allison 4x4 Z71 6.6' Bed
Maxxis 235/80/16E; AirBags w/AirLift1; mor/Ryde Rubber Pinbox; Andersen UltimateII Alum. 5erhitch on Reese Flipball w/Curt 4" offset; LCI Ground Control3; King Dishtailgater; Traveling with 10' Portabote;
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04-12-2015, 03:11 PM
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#9
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Senior Member
Join Date: Dec 2014
Location: St Simons Island, GA
Posts: 1,234
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AC Vents
Our main AC blows through all vents. Being all vents are closeable, we have the option of where the air goes/doesn't go. Bedroom AC only cools BR. Don't have to cool entire unit at night. Much more efficient. Since the BR AC is much smaller than main unit, we can run it off the inverter for several hours if need be [boondocking]. I have run it for over 4 hours so far without depleting bat bank below 12vdc. 500 amp hrs goes a long way for a small AC. That's why we opted for the smaller unit just to cool one room. Direct air, no vents.
__________________
Aviator Wright Flyer #1919
Army Pathfinder Vietnam, 3 tours
DAV, MOPH, VFW, NRA, 1stCav. ABN
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04-14-2015, 12:02 PM
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#10
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Junior Member
Join Date: Sep 2012
Location: Toccoa
Posts: 19
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Thanks for the info. That makes sense now.
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04-15-2015, 03:01 PM
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#11
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Senior Member
Join Date: Apr 2011
Location: Splendora, Texas
Posts: 1,314
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Just got a new Wildcat and that is what they told us, they both pump air thru the whole system. We had a second AC in our bedroom for the last fiver the we had and it was a stand alone unit not ducted. We are happy with the ducked ACs. Good Luck
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