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08-18-2013, 09:37 PM
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#1
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Senior Member
Join Date: Sep 2012
Location: Prospect Heights, Il
Posts: 120
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Dual zone heat pumps on 2013 Ventana
We have a 2013 Ventana 3634. It has two roof airs. When I have the front (zone 1) off and the rear heat pump on to warm the rear to take a shower, warm air also comes out the ceiling vents in the front. Just checking if this is normal.
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John and Jeanette and Timmy the Norwich Terrier
2013 Newmar Ventana 3634
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08-18-2013, 09:45 PM
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#2
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Senior Member
Tiffin Owners Club
Join Date: Jul 2012
Posts: 360
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Don't know about the Newmar, but on my Zephyr, when using any of the units, air comes out of all vents. This is very nice as on a cool or warm day, I can cool, or heat the coach using one unit. Cuts the noise down. If necessary, I can add another zone. So, I think this is by design.
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Karl and Janet
Tiffin Zephyr 45QDZ
Owens-Classic Trailer, with elevator and air ride
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08-18-2013, 09:52 PM
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#3
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Yes, the duct is common to all the heat pumps.
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2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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08-18-2013, 10:22 PM
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#4
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Senior Member
Newmar Owners Club
Join Date: Dec 2008
Location: Spokane, Washington
Posts: 1,167
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Quote:
Originally Posted by Mr_D
Yes, the duct is common to all the heat pumps.
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And refridge. air, like mine...
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Ron... WB7DJV
2000 38' Dutch Star | 2006 Grand Cherokee | SilverLeaf VmsPc Engine Monitor | TST TPMS
FMCA, NKK
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08-19-2013, 07:13 AM
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#5
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jul 2011
Posts: 1,173
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Yep, as mentioned above, our 2012 DSDP works the same way.
Mike
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NHSO
2021 DSDP 4081
2016 DSDP 4369
2012 DSDP 3734
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08-19-2013, 08:16 AM
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#6
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Senior Member
Join Date: Sep 2012
Location: Prospect Heights, Il
Posts: 120
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Thanks for the quick replies. It makes sense. Still learning all the details on the new coach. We've had Winnebago products for the last 12 years.
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John and Jeanette and Timmy the Norwich Terrier
2013 Newmar Ventana 3634
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08-19-2013, 09:33 AM
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#7
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Senior Member
Join Date: Apr 2005
Location: Lower Alabama
Posts: 338
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The previous posters have it right; there are no partitions in the ducts between the front and rear heat pumps. Winnebagos of course have the single-unit Carrier basement air system, which is totally different.
I think someone found out that a non-Newmar coach didn't have plugs in the ends of the ducts; that may be worth checking out. That person simply plugged the ends of the ducts from inside with crack-filler foam.
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regards,
Mahlon
Mad Scientist and Principal Operator of 2008 Newmar Ventana 3933
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08-19-2013, 03:24 PM
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#8
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Senior Member
Join Date: Jan 2010
Location: Kerrville, TX
Posts: 153
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Our Grand Star also has the full length air tubes for both the forced air and the return air on both heat pumps. I wish it had vents that could be closed so as to reduce noise...meaning (for example) in the evening when up and around watching TV turn off unit 1, turn on unit 2, close the vents in the BR/Bath, forcing the air into the front area from the rear unit..and reverse at night thus reducing noise...
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Curt & Susan 2009 38' Newmar Grand Star 3752
Front Engine Diesel Freightliner Chassis Cummins 340 ISB/Allison
Toad: Honda Element, Ready Brute integrated tow bar and braking system, Protect-a-Tow
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08-19-2013, 03:33 PM
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#9
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Quote:
Originally Posted by Romeo
And refridge. air, like mine...
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I would think so since the heat pumps and air cons are mounted in exactly the same way to the same ducting!
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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08-19-2013, 07:33 PM
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#10
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Moderator Emeritus
Nor'easters Club Workhorse Chassis Owner iRV2 No Limits Club
Join Date: Oct 2004
Posts: 30,785
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Curt I think you can have close vents on the ceiling air vents to direct more air from the rear AC to front of coach or vise verser.
I'll try to find them. CONTROL CEILING VENTS
You only need the out going vents, returns should not effect the operation.
The returns also remember have the foam filter.
The ceiling ducts go full front to back.
If you ever need the AC replaced make sure this PIB is followed.
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08-19-2013, 09:24 PM
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#11
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Senior Member
Newmar Owners Club
Join Date: Jan 2013
Location: Illinois
Posts: 327
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Our 2013 Canyon Star 3940 has two ceiling ducts running the full length of the ceiling...one for delivery and one for return, and, yes, the air from the front AC/Heat Pump passes through the full length as does the rear unit. I tried inserting an "air dam" in the delivery duct to separate the zones but I do not believe that I was helping the situation. As mentioned it is nice to run the rear unit when sitting in the front of the coach and run the front when sleeping or otherwise needing conditioned air in the rear. Really cuts down on the noise.
I had thought that it would be nice to have vent grills that could be closed off to direct the air with more precision. Thank you to 007 for posting the link for the vent grills. I am pretty sure we will order the controlable grills.
Also, be very sure to clean the sponge filters in the return ducts from time to time. Our coach was only two months new and I removed the return filters only to find that they we completely coated with "dust". We keep the coach in an enclosed building and the windows are closed most of the time so I must conclude that they picked up some serious dust before we delivery. But it may simply be that they work well and just need frequent cleaning.
Thanks again 007 for the tip on where to get the fully controlable vent grills.
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2013 Canyon Star 3940
2011 GMC Terrain SLT-2 toad
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08-20-2013, 04:58 AM
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#12
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Mar 2011
Location: Fort Myers, FL
Posts: 1,670
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Quote:
Originally Posted by LongDogRanch
Thanks again 007 for the tip on where to get the fully controlable vent grills.
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+1 to that.
007 ... your ability to "find things" never ceases to amaze me. I bet if you still used filing cabinets, you would need an entire warehouse to store your information.
Thanks for all you do for us!
Steve 
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Steve & Lisa
2022 Mountain Aire 4118
2024 JL Rubicon & 2019 Cherokee Trailhawk
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08-20-2013, 07:23 AM
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#13
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Senior Member
Join Date: Apr 2005
Location: Lower Alabama
Posts: 338
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CONTROL CEILING VENTS
D&W will sell direct, by the way. That's how I got my replacement vents a few years ago. If only they would use a plastic that doesn't deteriorate into eggshell...
__________________
regards,
Mahlon
Mad Scientist and Principal Operator of 2008 Newmar Ventana 3933
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08-20-2013, 07:57 AM
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#14
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Senior Member
Join Date: Sep 2012
Location: Prospect Heights, Il
Posts: 120
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Where exactly are the foam filters located?
__________________
John and Jeanette and Timmy the Norwich Terrier
2013 Newmar Ventana 3634
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