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06-08-2008, 08:01 PM
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#1
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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Hello,
We have the Hydro Hot system in coach. Was wondering how other feel about it, problems, etc. Ours needs to be adjusted because the heat is ok, but the hot water is only lukewarm. It also does not work when diesel tank gets below 3/8's full (less than half, more than 1/4 full), something we needed to learn, but it was not much fun when it's cold outside.
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06-08-2008, 08:01 PM
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#2
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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Hello,
We have the Hydro Hot system in coach. Was wondering how other feel about it, problems, etc. Ours needs to be adjusted because the heat is ok, but the hot water is only lukewarm. It also does not work when diesel tank gets below 3/8's full (less than half, more than 1/4 full), something we needed to learn, but it was not much fun when it's cold outside.
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06-09-2008, 05:25 AM
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#3
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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Do a search on Hydro Hot and Aqua Hot for lots of information. There is an adjustment knob behind the heater to allow you to set the domestic hot water temp. The problem is usually having the water too hot. You also will not have unlimited hot water when just the electric heat source is being used.
Dale
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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06-09-2008, 09:29 AM
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#4
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Senior Member
Join Date: Jul 2005
Location: Pahrump, NV
Posts: 329
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We love ours and so far haven't had a problem in 2 years.
We do have the annual PM performed and I will say that after the 1st PM that it burned cleaner (less diesel smell outside)..although it wasn't objectionable to start with.
__________________
2011 Airstream Classic Limited
2011 GMC Sierra 2500HD Duramax/Allison
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06-09-2008, 12:50 PM
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#5
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Registered User
Join Date: Feb 2000
Location: Rio Grande Valley, Texas
Posts: 125
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Info above is right on the money. Rear panel access will let you turn water temps way up. Mine will run the diesel tank dry if I let it. Electric is marginal for anything other than washing your hands or a few dishes. I can keep the chill off with electric but thats all. I've had four of them now and love it.
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06-09-2008, 12:56 PM
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#6
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Registered User
Newmar Owners Club
Join Date: Nov 2008
Posts: 2,899
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Thank you all. I knew about the adjustment, but the way mine is installed, I would need to be very small to get to it so I could turn it. Not sure how I am going to get this adjusted. Still hope dealer will take care of it, since we just purchased 30 days ago. Awaiting their call.
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06-09-2008, 02:46 PM
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#7
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Senior Member
Join Date: Aug 2004
Posts: 341
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Tend to agree with Renipladlo - if I were able to get to the back of the unit, I certainly would not be able to get out. I think on my '05, the temp adjust knob is in the vicinity of the water pump where I also found what looks like one of those temperature probe-like devices. Still not sure if the knob is for the water temp or the temp in the compartments.
__________________
David Horn, TX; 2014 40ft Phaeton QTH; 2014 Mazda CX5; 2013 Can-AM Spyder RT-S on TandemTow trailer; Traveling with Ringo (an English Cocker)
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06-09-2008, 04:13 PM
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#8
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Member
Join Date: Mar 2006
Location: Huntington Beach, CA
Posts: 95
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The water temperature knob is accessed through the rear of the Aqua Hot. If I remember the setting is backwards and you need to set it on the number 2. The number should be directly in front of you. The real setting is on the inside so the number 2 represents the number 4 setting. If number 2 is too hot, set it at 3 to cool it down some more. It's actually a mixer valve. I'm too fat to reach it but fortunately I have a slim wife who was able to wiggle her way in, I had to pull her out after she turned the knob. What a great design!!! Get a grand kid to get in. Ours was way too hot and with that lousy shower faucet (since replaced with a Moen) I felt it was dangerous. Use a thermometer to set the temperature, I felt 115 degrees is plenty. The way Aqua hot works, you should be able to see a change in temperature by just running the hot water for a very short period of time. Hope this helps.
__________________
Nick and Ramona
Huntington Beach, CA
2005 Alpine Mid Door
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06-09-2008, 05:29 PM
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#9
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Member
Alpine Owners Club
Join Date: Jan 2008
Location: Falcon, CO 80831
Posts: 33
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Renipladlo:
Hello,
We have the Hydro Hot system in coach. Was wondering how other feel about it, problems, etc. Ours needs to be adjusted because the heat is ok, but the hot water is only lukewarm. It also does not work when diesel tank gets below 3/8's full (less than half, more than 1/4 full), something we needed to learn, but it was not much fun when it's cold outside. </div></BLOCKQUOTE>
__________________
Tom & Johnna Phillips, Falcon, Colorado
Teddybear the Pom
2005 Alpine Limited 40' FDTS #75381 / 2009 Saturn Outlook
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06-09-2008, 06:08 PM
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#10
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Member
Alpine Owners Club
Join Date: Jan 2008
Location: Falcon, CO 80831
Posts: 33
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Renipladlo,
Our 2005 Alpine Limited 40'FD has a Hydro Hot System. We couldn't ask for a better system. We stayed at the Air Force Academy FamCamp during the winter months with temps reaching -23 degrees. The Hydro Hot provided us with all the heat and hot water we needed. The engine heater heated the engine to enable us to to get under way in short order. If you plan on being near Denver, Colorado call ahead to the Hydro Hot people and let them check your system out. I did last year and they upgraded my system while doing a fluid change. Hope this helps you out. Have a Great time RV'ing. Tom
__________________
Tom & Johnna Phillips, Falcon, Colorado
Teddybear the Pom
2005 Alpine Limited 40' FDTS #75381 / 2009 Saturn Outlook
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06-09-2008, 07:44 PM
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#11
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Senior Member
Alpine Owners Club
Join Date: Jun 2007
Location: Lake Wales, FL
Posts: 3,113
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Renipladlo,
We have the Hydro hot and love it, wouldn't go back to a propane system for anything in the world. Plenty of hot water, quiet, just have to remember to turn it on 2 minutes before a shower and off afterward. The only issue we have is I have to reset it after I take it out of storage. I suspect that is because WRV wired it wrong and when I turn off the power cut off the Hydro Hot
detects a low voltage condition (shut off) and I have to reset the low voltage, simple thing, I keep a paper clip in the compartment. One of these days I will take the time to fix it.
__________________
Dave, Bobbi and Fenway
2005 38' FDTS Alpine Limited, 2016 Jeep Grand Cherokee Limited
Lake Wales, FL
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06-09-2008, 08:50 PM
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#12
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Senior Member
Join Date: May 2004
Location: Auburn, CA, Havasu, AZ & Mulege, BCS
Posts: 5,385
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DrDave- don't know if this will work on an older model, but I was instructed on our new one that there are two methods to reset. You know the hard reset button on the motherboard. The other (might have been added later by a HHot genius) is a soft reset: turn the Diesel button on the upstairs control panel off, on, off, then on again. Two toggles in a row initiates the reset if I caught that correctly on the walk thru. I haven't had to go to the basement to reset mine as the soft reset always did the trick.
__________________
Baja-tested '08 2-slide 36'
Alpine: The Ultimate DIY'er Project
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06-10-2008, 07:29 AM
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#13
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Member
Join Date: Apr 2008
Posts: 44
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From the Hydro-Hot manual:
Low Voltage Reset (Button):
The Hydro-Hot's Eletronic Controller must be manually reset whenever the Low Battery Voltage Fault indicator light has been activated. The Electronic Controller can be reset either by depressing the "Low Voltage Reset" buton located on the Elecronic Controller (use a thin, straight, nonmetallic object to access the reset button through the small hole in the faceplate) or by turning OFF the Diesel switch on the Heater's Interior Switch Panel for approximately 30 seconds, then turning the switch back ON.
Raymond
'07 40MDTS
__________________
Raymond
'07 Alpine Limited 40MDTS
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06-10-2008, 04:16 PM
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#14
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Senior Member
Alpine Owners Club
Join Date: Dec 2001
Location: Las Vegas, NV
Posts: 1,100
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Old RV'r,
I just saw your post about having blocks. If you can safely get your coach up high enough to get under it, there is a way to get to the temp. mixing valve. The floor of the basement has a hole in it between the Aqua Hot unit and the holding tank, it is only covered by the thin material used to cover the bottom of the coach. This is only on coaches with the smart beds. From under the coach, you can feel where the floor is missing and cut the material with a knife. From there you can reach up into the hold and get at the knob on the top of the valve to adjust. After you have the temp set as you like, make a plate to cover the hole and screw it in place.
Dale
__________________
Dale Gerstel
AMG GTS
Las Vegas, NV
Had: 2007 Limited SE 40fdts
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