Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Entegra Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 03-08-2017, 04:38 AM   #1
Senior Member
 
hogdriver's Avatar
 
Entegra Owners Club
Join Date: Jan 2012
Location: Polk City, FL
Posts: 3,236
Aqua Hot Pump Upgrade and Drain/Flush

I have been saving (dreading) an Aqua Hot makeover until I could make some time between work and trips and my warranty expired. A few months ago my stir pump failed. DW complained of lukewarm showers and red pump light on AH control panel in basement. I called Entegra and they generously sent me a pump a few months after my warranty expired if I would handle the labor cost. I took my time and conversed with a few forum members about how to drain and flush the AH coolant. Without flooding the deceased horses I was one of the original posters about brown AH coolant with Brobox and sent my coolant in for analysis. I found Camco pink boiler fluid on the Interweb for about $10/gal, which is about 1/2 to 1/3 the price of the Century green Fluid. After the way my fluid discolored from the factory build I determined to use the Camco. I ordered 12 Gals ( which is just about perfect). The next thing I did was figured if I was going to drain everything why not upgrade the pumps to the Buehler pumps. Entegra replaced all my original round 105 pumps last year (18 mos ago really)as part of the AH recall. I had the square 108 pumps and my first one failed 18 dos later and I only use the RV part time. Not good. I ordered two upgraded Buehler pumps from Roger Berke to match the one Entegra provided.

Then I gathered supplies which included; three new pumps, 12 gals Camco boiler fluid, three 5 gal buckets, an old RV water pump affixed to a board, 30 gals of distilled water (yes, I bought 20 gals first and was not enough it took 30).

The problem with this whole procedure is I would not suggest doing this in a campground unless broken down. You have to be able to handle a lot of fluid and water. My RV storage guy graciously allowed me to work at his place. The hardest problem is what to do with all the drained coolant. About 40 gals of nasty. In my case the local municipality said less than 250 gals of propylene glycol can be disposed down the waste drains. Some cities require it to be taken to recycling. In reality you have 10-12 gals of 50/50 propylene glycol and 20-30 gals of flushing water with low concentrations of glycol but unknown contaminants. I chose to do the work myself as I wanted to learn my AH system better and it would be real expensive to pay an RV guy to do this as it took an entire day and part of another.

First replace the pumps. The stir pump is the worst (right pump) as you have to remove the burner to get it in and out. This also requires clamping and disconnecting fuel lines.

Then drain the old coolant. You can see in the first picture the fluid is dark green with brown and black sediment.

The next step was flushing. I used distilled water connected via temporary plastic tubing into the Zone 1 origin above pump 1 then later on Zone 2 above pump 2. I drained via the AH drain line until each zone ran clear. Zone 1 (front) was more dirty than zone 2. I then used a compressor and expelled all the water with the sediments I could get out of each zone. I was glad I did. The compressed air blew the last of the distilled water with really brown and nasty fluid.

I reconnected the lines and started pumping new pink fluid from the drain into the AH as per the manual for refilling the system. It took about 6 gals and then came out from the overflow. I then jumped all the circulation pumps by attaching their blue wires to ground and was able to add about 3 gals more after burping the system.
Then I buttoned the system up and fired it up. I got the system hot and it ran for a bit until the AH shutdown for LOW FLUID CUTOFF. I wasn't surprised. The system had expelled more air. I added about 2 gals more until full. Overall I had put in 11 gals into a system reported to hold 12, so I know my concentration is a little off with remaining water in the lines.

I'm happy to report I am now pretty in pink.
Attached Thumbnails
Click image for larger version

Name:	IMG_7938.jpg
Views:	420
Size:	443.6 KB
ID:	154223   Click image for larger version

Name:	IMG_5798.jpg
Views:	520
Size:	443.9 KB
ID:	154224  

Click image for larger version

Name:	IMG_7981.jpg
Views:	424
Size:	424.7 KB
ID:	154225   Click image for larger version

Name:	IMG_8483.jpg
Views:	514
Size:	384.4 KB
ID:	154227  

__________________
Dave & Debbie
2021 Newmar DutchStar 4369
2016 Ford Edge&2019 Ford F-150 toads
hogdriver is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-08-2017, 05:01 AM   #2
Senior Member
 
brobox's Avatar
 
Entegra Owners Club
Join Date: Apr 2007
Location: SW FL
Posts: 26,893
Excellent post Dave. Sorry to say your post brings back very not fond memories.
Darin, the AH tech that did my flush and motor change told someone this year he would no longer do flushes, way to time consuming. It was 7 or 9 hours to complete mine with the blockage it had. I am guessing AH would not pay him enough for the time he spent.
__________________
Chuck in SW FL
Digital 2021 Cornerstone "B"
A "Digital" 2019 Cornerstone "B" Traded
A "Classic" 2014 Anthem 42 RBQ---Sold
brobox is online now   Reply With Quote
Old 03-08-2017, 06:06 AM   #3
Senior Member


 
Join Date: Jan 2016
Location: Montgomery, TX (Home Sweet Home)
Posts: 2,501
Dave, excellent write up.

Thank you for taking the time to compose that great tutorial.

We have the 400D, not the 450D and I wonder if these pumps are the same? I will contact Roger to see.

-Matt
__________________
Currently Motorhomeless
2017 Entegra Aspire 44R (bunks) towing 2019 F-350 LB (Sold)
2012 Tiffin Phaeton 40QKH (Our Phaeton was so nice, we bought it twice)
2016 Open Range RF376FBH (Sold)
Matt D is offline   Reply With Quote
Old 03-08-2017, 06:20 AM   #4
Senior Member
 
photopilot's Avatar
 
Monaco Owners Club
Join Date: Jan 2016
Location: New Hampshire
Posts: 486
Aren't you lucky to have your Aqua-Hot accessible that easily! To get to mine, I have to crawl in the next bay and work through sliding doors! Glad you were successful. Not having any service records on our new to us coach, I went to flush it and the first fluid came out the same color pink as the new fluid. I stopped there!

Walt
__________________
Walt & Bonnie
2006 Monaco Camelot 40PAQ, Cummins 400 ISL
'16 Ford C-Max, Roadmaster BP, Sterling towbar
photopilot is offline   Reply With Quote
Old 03-08-2017, 08:05 AM   #5
Senior Member
 
voltdoc's Avatar
 
Entegra Owners Club
Join Date: Oct 2010
Location: East Greenwich, RI
Posts: 1,766
Quote:
Originally Posted by Matt D View Post
Dave, excellent write up.

Thank you for taking the time to compose that great tutorial.

We have the 400D, not the 450D and I wonder if these pumps are the same? I will contact Roger to see.

-Matt
Dave, great write-up, thanks for sharing!

Matt, 400D only has two pumps. No stir pump. On mine they are round and branded Cooper Standard.

Link to photo:
https://goo.gl/photos/z74PnmUhdow2izie9
__________________
Rob & Linda https://MyQuantumDiscovery.com
2017 Entegra Aspire 44B - 2021 Jeep Grand Cherokee L Overland
2013 Entegra Aspire 42RBQ
voltdoc is offline   Reply With Quote
Old 03-08-2017, 08:07 AM   #6
Moderator Emeritus
 
Cruzer's Avatar
 
Join Date: Oct 2002
Location: Sheboygan, WI
Posts: 5,335
Nice post, Dave. That mirrors pretty much what I went through when replacing my pumps with the new style except I'm still using the green stuff. The jury is still out on that.
__________________
Mark & Leann Quasius
2016 Cornerstone 45A
2007 Allegro Bus 42QRP (Sold)
2012 Jeep Wrangler Unlimited - Rubicon
Cruzer is offline   Reply With Quote
Old 03-08-2017, 09:04 AM   #7
Senior Member
 
lowejug's Avatar
 
Join Date: Oct 2013
Location: st george
Posts: 1,376
Quote:
Originally Posted by photopilot View Post
Aren't you lucky to have your Aqua-Hot accessible that easily! To get to mine, I have to crawl in the next bay and work through sliding doors! Glad you were successful. Not having any service records on our new to us coach, I went to flush it and the first fluid came out the same color pink as the new fluid. I stopped there!

Walt


Your Aqua hot is the original build era back when they built them right and Aqua hot were flawless.. my Monaco dynasty had the same,
These new ones are not half the units ias the old
This post proves that. Pages of of Aqua hot problems on this site
lowejug is offline   Reply With Quote
Old 03-08-2017, 09:49 AM   #8
Senior Member
 
hawgguy's Avatar
 
Join Date: Jun 2011
Location: College Station, Texas
Posts: 2,841
Excellent - thank you. I have done the same myself using similar technique.

Did you activate the pump for the floor loop located on the other side of the bus? I neglect this.
__________________
Bob in College Station, TX
2015 Entegra Cornerstone 45K
2012 Jeep Rubicon, 1994 FXLR
hawgguy is offline   Reply With Quote
Old 03-08-2017, 09:53 AM   #9
Senior Member
 
Join Date: Jun 2014
Location: Pollock Pines, CA
Posts: 1,083
Nice post Dave. Filing this one.

Lowejug, I think you are right. This not just an Entegra problem. Same pages of problems on other owner forums. For as much as an AH unit costs you'd think it would be flawless. Room in the market for a less expensive and higher QC product?
__________________
John Arenz N6YBH
2017 Cornerstone 45B, 2012 JK Rubicon in tow
2014 Anthem 44B (sold)
RubiconTrail is offline   Reply With Quote
Old 03-08-2017, 10:02 AM   #10
Senior Member
 
hogdriver's Avatar
 
Entegra Owners Club
Join Date: Jan 2012
Location: Polk City, FL
Posts: 3,236
Yep, sure did Bob. After reading your post last year I really wanted the Zone 1&2 loops flushed. I rigged a couple old spools of wire to each pump all grounded to the front DC lugs in the front left compartment.

I think if I had to do this again I'd do either like your posting and run plain old tap water (assuming it's not dreadful with minerals) and flush each loop like 15-30 mins. Then flush again with distilled water to purify the lines. This way it would use a lot less distilled water.

Or, I'd just buy like 50 gals of distilled water. They were about $.88 at Walmart. Then flush until clear, use air to purge, then flush again then purge again.

There was a lot of sediment in my system. I'm not a chemist, but I am a Mechanical Engineer and I've never seen a boiler system with that much junk in it. Without opening myself to some lawsuit I can only speculate that the boiler, tank, heating coils or some other part is coated with something that heating breaks down. My theory is the Century green fluid either does not have a decent corrosive inhibitor or some vendor changed the way the make one of the components (say the pump or the Chinese company making the AH boiler) and didn't check compatibility. I'm hoping the first 2-1/2 years of running the green stuff has loosened whatever it is and by flushing and running the Camco pink my system will now run a long time. It certainly can't be any worse than the green fluid and is lot cheaper and easier to obtain.
__________________
Dave & Debbie
2021 Newmar DutchStar 4369
2016 Ford Edge&2019 Ford F-150 toads
hogdriver is offline   Reply With Quote
Old 03-08-2017, 10:20 AM   #11
Senior Member
 
Gary.Jones's Avatar


 
Join Date: Oct 2012
Location: Louisiana
Posts: 9,809
Blog Entries: 1
Dave:

Really nice write up and complete with pix.... You da MAN!! As you may remember, I did the same and paid for two Buehler pumps myself and then Entegra paid to install them along with one "108" pump that had failed again this time and the "108" which was replaced by a Buehler , so I bit the bullet and now have all 4 pumps upgraded to Buehlers, and I pray that this means that I never have problems again. Unless I misunderstood what you did, I think you must still have one "105" or "108" pump still in your system (the engine heat loop) since I think you replaced only 3 pumps and not all 4. I am assuming that you feel the engine heat loop is used so infrequently that it was not worth replacing it..... I agree with that assessment (living in the south and trying to avoid cold temps as much as possible), but I replaced all four of my pumps.

Thanks again for the nice write up..... although I am hoping that I never again need to service AH pumps, this thread goes into the "Important threads Archive" and will be with me as long as I own this coach.

Gary
__________________
Gary and Dee, Zowie and Bowie (traveling cat sibs)
2019 Cornerstone 45B, X15-605hp, Imperial, Spartan K3,
2013 Honda CR-V toad, Demco Excali-Bar II,
Demco Baseplate, Demco Toad Light system, 73 de W5FI
Gary.Jones is offline   Reply With Quote
Old 03-08-2017, 10:27 AM   #12
Senior Member
 
hogdriver's Avatar
 
Entegra Owners Club
Join Date: Jan 2012
Location: Polk City, FL
Posts: 3,236
You are exactly correct Gary. I left the remaking 108 square pump on the back of the AH for the Engine Preheat because I have only used it about twice. It is also circulating the Engine coolant vs the AH coolant and I think it is not getting as many contaminants as the AH loops. At least it is still pink (I have Cummins Compleat ES coolant from a previous adventure vs the red Final Charge) vs the brown color that came out of the green fluid loop. I also saved the two operable 108 pumps as "roadie spares or giveaways" so I have two replacements available.
__________________
Dave & Debbie
2021 Newmar DutchStar 4369
2016 Ford Edge&2019 Ford F-150 toads
hogdriver is offline   Reply With Quote
Old 03-08-2017, 10:38 AM   #13
Senior Member
 
757driver's Avatar


 
Entegra Owners Club
Join Date: Jun 2004
Location: Cambridge, Ontario
Posts: 4,790
Dave,

Excellent post, thanks for the information.
__________________
Don & Gerri
2014 Entegra Anthem 44B
2014 Honda CRV Touring

1300W Solar, 1200AH LiFePO4 FMCA F443497
757driver is offline   Reply With Quote
Old 03-08-2017, 10:43 AM   #14
Senior Member
 
BeHappy's Avatar
 
Winnebago Owners Club
Entegra Owners Club
Join Date: Apr 2014
Posts: 177
Dave - great write up, photos appreciated!

Love our Entegra, but AQH mfr pump quality issues gives me pause

Safe Travels to All


2015 "Classic" Cornerstone
BeHappy is offline   Reply With Quote
Reply

Tags
upgrade



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Aqua Hot solution to my hot, cold, hot water problem JeffK Entegra Owner's Forum 38 06-25-2017 04:54 PM
Aqua Hot Overflow Reservoir and Pump #3 OWV Entegra Owner's Forum 24 11-20-2014 10:01 AM
Aqua-Hot AND a/c heat pump? BillyC Monaco Owner's Forum 7 05-03-2011 06:52 PM
Hot water tank drain, flush & fill SteveG Winnebago Industries Owner's Forum 7 04-30-2007 04:40 PM
installation of "no-flush flush"device R Ibarra RV Systems & Appliances 2 06-25-2006 04:17 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 09:14 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.