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Old 08-30-2015, 01:29 AM   #1
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Brand: Thor Motor Coach
Model: ACE 30.2
State: Massachusetts
Posts: 17
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Water heater adjustment?

Anyone know if the water heater in the 2016 ACE 30.2 can be adjusted? It is a bit too hot for me.
TIA
Larry

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Old 08-30-2015, 10:47 AM   #2
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THOR #1469
Larry,

To the best of my knowledge the Attwood water heaters are not adjustable. I have read an tech article, I believe in Family Motor Coaching, on how to make the mod to an adjustable thermostat on water heaters. There is also a retrofit kit available for Attwood water heaters so you can change to an adjustable thermostat. Here is the link for the adjustable thermostat at Amazon. You will however need to determine compatibility with your model water heater.

http://www.amazon.com/Atwood-93105-A.../dp/B001BZ36HM

The hot water temp has been an issue across multiple manufacturers but is one most folks live with because using a combination of hot and cold water reduces the cycle time when the hot is used for showering.
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Old 08-30-2015, 01:21 PM   #3
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Larry,

To the best of my knowledge, most RV water heaters do not have an adjustable thermostat but rather a fixed temperature one. You should have it checked, it might be the wrong one for your unit or not working properly. We had the same problem on our 2008 DP and we replaced the fixed stat with a lower heat range one and that solved the problem.

Fred
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Old 08-30-2015, 02:31 PM   #4
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Some like it HOT! Sorry, I tried but could not resist!


I changed the facet in the bathroom to a single handle one and this prevents scalding from the very hot water. I like the fact that it is hot as we can drive 8 hours on the road and the water is still really hot when we stop.
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Old 09-02-2015, 08:17 PM   #5
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Water Heaters - Atwood Mobile

Use the link above to find atwoods manuals, they will identify the exact version you have, some are adjustable, some are not>

"The temperature knob or lever is factory adjusted to itslowest dial setting.
We recommended the mid-point position between warm and hot,
as noted above. This will provide for energy efficientoperation and
sufficient hot water. Valves for reducing point of usetemperature by
mixing cold and hot water are available. Consult a licensedplumber or
local plumbing authority."

I had an older 5th wheel with the manual adjustable controllers, the version I have now has an ECO and is not adjustable.

One thing I found interesting in the Atwood manuals is this warning about operation while in motion:

Turn gas OFF at the LP tank when vehicle is in motion. This disables
all gas appliances. Gas appliances must never be operated while
vehicle is in motion. Unpredictable wind currents may be created
which could cause flame reversal in the burner tube, which could
result in fire damage. The thermal cut off fuse could also be
unnecessarily activated resulting in a complete shutdown of the
water heater requiring replacement of the thermal cut off. See
maintenance of electronic ignition water heaters for further
explanation of the thermal cut off.




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Old 09-03-2015, 02:30 AM   #6
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Atwood water heaters can be adjusted In one of two two ways. Most are shipped with a 140 degree thermostat. You can purchase replacements, either a 120 degree version or an adjustable. I have purchased but not installed the 120. Both are available from Amazon.

Regards,

Randy
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Old 09-03-2015, 12:35 PM   #7
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Many times I think the water is too hot. But, my wife and I can both take showers without running out of hot water. This is due to the higher percentage of cold water to hot water at the faucet. If the temperature of the hot water was lower, we would use less cold water and more hot water at the faucet and would probably run out.
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Old 09-03-2015, 01:18 PM   #8
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pstandiford,

Yep, that's why I haven't changed ours out after going to the work of figuring out how to change it and buying the parts. That said, 140 really is too hot - it's a bad accident waiting to happen. I will change it before I allow any of the grand kids in the coach!

Regards,

Randy
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Old 09-03-2015, 02:12 PM   #9
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I haven't changed mine either, however, when it's shower time I use both gas and electric to reduce the cycle time for hot water. After showers I then switch to electric only to conserve LPG.
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Old 12-07-2016, 08:00 PM   #10
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Model: FUN MOVER
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Water heater fuse

I have a 1999 Thor Fun Mover. I am having trouble locating the fuse or shut off for the hot water heater. It has been drained. A fellow rv enthusiast advised I need to shut it off to be fully winterized.
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Old 12-07-2016, 08:34 PM   #11
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Quote:
Originally Posted by pstandiford View Post
Many times I think the water is too hot. But, my wife and I can both take showers without running out of hot water. This is due to the higher percentage of cold water to hot water at the faucet. If the temperature of the hot water was lower, we would use less cold water and more hot water at the faucet and would probably run out.
That's a common practice to overcome a 'smallish' hot water tank. The tradeoff is a shorter lifespan of the water heater, but having said that we had our last motorhome eleven years, and it still had a fully functional original tank when we traded it. I did flush it and change the anode rod annually. We now have a demand system, can only hope it holds up as well.
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Old 12-07-2016, 10:13 PM   #12
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I have ordered a thermostatic mixing valve. That will let me keep advantages of the hotter water but make it last longer by mixing cold with it before it leaves the heater area. Cheap versions available for under $25. Next phase of project is to convert to single handle faucets for even more control.
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Old 12-08-2016, 01:05 AM   #13
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Use the water heater bypass valve to mix cold with hot prior to the faucets. Free.
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Old 12-08-2016, 03:08 PM   #14
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Quote:
Originally Posted by nosticks View Post
Use the water heater bypass valve to mix cold with hot prior to the faucets. Free.
I just like idea of more uniform water temp.
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Old 08-20-2017, 03:22 PM   #15
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Where is the location of the hot water bypass valve in the 2015 Thor ace 30.2 ?

We are new owners. Thanks
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Old 07-29-2021, 01:30 AM   #16
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i PURCHASED THE ADJUSTABLE WATER HEATER THERMOSTAT, I ONLY GET 85 DEG ON THE C SETTING. DOES IT MATTER WHICH TERMINAL YOU HOOK THE WIRES TOO? OR JUST REMOVE THE BROWN WIRES AND HOOK UP THERMOSTAT/
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Old 07-29-2021, 02:01 AM   #17
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I watched a youtube and will try the temp gel, this will give a better connection between the thermostat and water tank
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