Reply
 
Thread Tools Display Modes
 
Old 12-07-2018, 10:03 AM   #21
Senior Member
 
rob_fla's Avatar
 
Join Date: Jan 2014
Posts: 1,634
Quote:
Originally Posted by piper guy View Post
Wanted to thank Michelle. Stuck camer up into the returns for the forward air unit and it looks like partial duct collapse on the one side. I think my easiest way out is to add two more returns to each AC unit. Looking at it, it shouldn't be too hard a job as long as my hole cutting is accurate. ��
When I looked in my returns, I could see the bubble foil was getting sucked down to the duct and blocking the air flow back to the A/C return.
I cut a set of new returns in the ceiling right next to the supply ducts so I could move the wiring blocking the air flow and put some solid foam strips above the supply ducts to keep the foil from getting sucked down on top of the supply duct and blocking the air flow.
The added returns, unblocking the wiring and stuff and supporting the bubble foil on top made a big difference in the efficiency of our A/C units.
Also added supply ducts as we did not have enough according to the A/C manufacturer.
The A/C manufacturer recommended a minimum of 5 A/C supply registers per 15k A/C unit. Our Redwood has two 15k A/C units and only a total of 7 supply registers (3 on one duct line, and 4 on the other duct line) we now have a total of 12 supply registers, 6 on each supply duct line and 4 return registers on each A/C unit.
All these mods along with cutting down all the supply register collars has worked pretty well for us.
__________________
Robert & Sheryl
2014 Redwood 38FL
MoRyde 8K IS, Disc Brakes, MoRyde Pin Box
17.5 Goodyear G114's, RV Armor Roof
2018 RAM 3500 DRW, Curt Q24 Hitch

rob_fla is offline   Reply With Quote
Old 12-07-2018, 03:02 PM   #22
Senior Member
 
5th_Time's Avatar
 
Join Date: Mar 2012
Posts: 1,109
No matter how many return registers you install downstream, the volume of air flowing back to the AC is restricted by the expanding foam that invaded the inside of the ducts - especially just before the plenum under the roof unit. You can see this when you are sealing the foam separating the supply & return plenums.

On mine, roughly 30+% was blocked under each unit. I reduced this somewhat by sawing & removing what I could reach, but plenty more visible that I couldn’t.

Disregarding the manufacturer’s specs, I don’t see the benefit of adding additional supply registers to further divide the supply when the complaint is low volume/pressure - especially in the bedroom of the RL/RE models.
5th_Time is offline   Reply With Quote
Old 12-07-2018, 07:54 PM   #23
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 1,734
Quote:
Originally Posted by rob_fla View Post
When I looked in my returns, I could see the bubble foil was getting sucked down to the duct and blocking the air flow back to the A/C return.
I cut a set of new returns in the ceiling right next to the supply ducts so I could move the wiring blocking the air flow and put some solid foam strips above the supply ducts to keep the foil from getting sucked down on top of the supply duct and blocking the air flow.
The added returns, unblocking the wiring and stuff and supporting the bubble foil on top made a big difference in the efficiency of our A/C units.
Also added supply ducts as we did not have enough according to the A/C manufacturer.
The A/C manufacturer recommended a minimum of 5 A/C supply registers per 15k A/C unit. Our Redwood has two 15k A/C units and only a total of 7 supply registers (3 on one duct line, and 4 on the other duct line) we now have a total of 12 supply registers, 6 on each supply duct line and 4 return registers on each A/C unit.
All these mods along with cutting down all the supply register collars has worked pretty well for us.
Rob, How far away from the supply ducts did you place your new returns? And did you do that for BOTH of the AC's?
__________________
2015 F-350
2016-38RL with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5 , F&P D/W , Whirlpool fridge , two awnings , Slide in Slide ,Pewter/Urban Clay in-Black & Silver out

http://i.imgur.com/D0Lp87sl.jpg
Ford truck guy is offline   Reply With Quote
Old 12-07-2018, 10:43 PM   #24
Senior Member
 
Ford truck guy's Avatar
 
Join Date: Jul 2015
Posts: 1,734
Forget that.. I did some digging and printed the pdf file you nicely made for all

Can you remember where you got the rectangle, white return registers? !
__________________
2015 F-350
2016-38RL with-
17.5 Goodyear 114's , Titan Disc brakes, MorRyde 8K IS, Onan 6.5 , F&P D/W , Whirlpool fridge , two awnings , Slide in Slide ,Pewter/Urban Clay in-Black & Silver out

http://i.imgur.com/D0Lp87sl.jpg
Ford truck guy is offline   Reply With Quote
Old 12-08-2018, 03:01 AM   #25
Senior Member
 
5th_Time's Avatar
 
Join Date: Mar 2012
Posts: 1,109
I had Tiara order them from Redwood factory parts. They match perfectly.
5th_Time is offline   Reply With Quote
Old 12-08-2018, 03:09 AM   #26
Senior Member
 
5th_Time's Avatar
 
Join Date: Mar 2012
Posts: 1,109
Rob, did you have to pull the ceiling panels to do this?
__________________
Mike & Pam '12 36RL, Kodiak Discs, 17.5" G114s H-Rated, SRE4000 w/HD Shackles, Joy Rider Shocks, Flex Air, 5.5 Onan, W&D, DW, 4 Scare Lights, (2) 6V Trojan T-145s; Progressive EMS-HW50C, Winegard DTV Sat, Sony/Denon 4K Home Theater, WiFiRanger EliteAC Pack, weBoost 4G-X Cell Booster.

'18 GMC Denali 3500HD CC, 4x4, DRW, DuraMax, Allison, Curt Q25 w/OEM Prep, Intellihaul Cameras, Transfer Flow 70gal Aux Tank/Toolbox.
5th_Time is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by Redwood RV or any of its affiliates. This is an independent, unofficial site.


All times are GMT +1. The time now is 04:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.