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Old 01-09-2018, 12:06 PM   #1
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Water heater temperature

I have a Suburban SW6D water heater in my 2014 241QBXL Cruise-Lite TT. The water temperature is extremely hot and I wonder if there is any way to reduce the temperature? Thanks!

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Old 01-09-2018, 12:25 PM   #2
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not really, at least in most RVs the temp is controlled by the little thermal switches on the side of the heater. You probably could get lower temperature switches, just keep in mind it is a small heater and if you lower the temperature you are more likely to run out of hot water
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Old 01-09-2018, 12:29 PM   #3
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Quote:
Originally Posted by moshe1436 View Post
I have a Suburban SW6D water heater in my 2014 241QBXL Cruise-Lite TT. The water temperature is extremely hot and I wonder if there is any way to reduce the temperature?
Here's a link to the installation/operation manual:
http://manuals.adventurerv.net/SW6D-...stallation.pdf

It says that water temperature can not be changed:
"The thermostat on your water heater is not adjustable. It is a temperature sensing limit designed to maintain a water temperature of 130 F (54 C ). Water temperatures over 130 F (54 C ) can cause severe burns instantly or death from scalds; therefore, be careful when using hot water. Children, disabled and elderly are at highest risk of being scalded. Always feel water before bathing or showering."
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Old 01-09-2018, 12:29 PM   #4
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I believe the thermostat is a preset sensor on the tank. They run the temp high because it extends the amount hot water when mixing it with the cold. That makes for longer showers. I have seen somewhere where there is a water mixer that blends cold water to the exterme hot water to get extra hot water.
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Old 01-09-2018, 12:49 PM   #5
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Originally Posted by moshe1436 View Post
I have a Suburban SW6D water heater in my 2014 241QBXL Cruise-Lite TT. The water temperature is extremely hot and I wonder if there is any way to reduce the temperature? Thanks!

Mo Sherrill
What is your hot water temperature? If the thermostat fails, some models will default with an auto shutoff at somewhere around 160 deg as I recall.
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Old 01-09-2018, 01:45 PM   #6
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X2 as AudiDudi has said. Check the thermostat position on the tank if it is not making correct contact it might not be sensing correctly.
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Old 01-09-2018, 02:06 PM   #7
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I have only ever seen 130º and 140º thermostat/hi-limit switches available for the Suburban water heater.

They are NOT adjustable but the suggestion of making sure you have good tank contact is good since poor conductivity with the tank could affect temperature.

I'd check to see what degree you have and if 140º, you might change it for a 130º.

130º Thermostat - 120v

140º Thermostat - 120v

They are located inside the access cover on the outer part of the water heater.
There is one for the 120v side and another for the propane side.
This is what they look like.


Here's a video that shows how to replace them.

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Old 01-09-2018, 02:37 PM   #8
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Water heater temperature

Quote:
Originally Posted by AudiDudi View Post
What is your hot water temperature? If the thermostat fails, some models will default with an auto shutoff at somewhere around 160 deg as I recall.
I don’t have a thermometer to check the actual temperature but will get one before I go any further.

On another part of my question deals with the pressure relief valve. When we first got to the campground we’re in now and the water temperature reached its high point there was water dripping from the pressure relief valve. That stopped several hours after the initial dripping. I wonder if sitting idle for two months would cause that to happen or if the water temperature is too high?

Thanks to those who responded, especially the videos. Also the comment that we may run out of hot water too soon if the temperature is set too low is a good recommendation.
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Old 01-09-2018, 03:04 PM   #9
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Originally Posted by moshe1436 View Post
I don’t have a thermometer to check the actual temperature but will get one before I go any further.

On another part of my question deals with the pressure relief valve. When we first got to the campground we’re in now and the water temperature reached its high point there was water dripping from the pressure relief valve. That stopped several hours after the initial dripping. I wonder if sitting idle for two months would cause that to happen or if the water temperature is too high?

Thanks to those who responded, especially the videos. Also the comment that we may run out of hot water too soon if the temperature is set too low is a good recommendation.
Dripping pressure relief valves are reported here pretty often.
Mine usually drips on the first fire up after winter.
Usually snapping the release handle once or twice resolves the issue.
Be careful of the pressure and the hot water when doing so.
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Old 01-09-2018, 04:22 PM   #10
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Thanks for the suggestion! Next time it happens I’ll try it!
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