Hot water temp control

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Tom in NM
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Hot water temp control

Hi folks,

I can't find an answer in other posts (may be there!), so I'll ask here. I have a 13' with a suburban propane hot water heater with the electronic ignition switch inside. Works great, maybe a little too great. The hot water is scalding hot. I forgot to warn a friend and she nearly burned her hand. I can see no way to modulate the temperature. Is that really the case? 
 

fyi, I did change to the higher altitude jets that were included as I live at 5,000' and often camp at higher altitudes. I don't think that affects the water temp but figured I'd mention it. 

Thanks

Tom

ac0gv
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Model number and photo?

There are some devices that can add temperature adjustment for some units,
I've never had an adjustable Suburban water heater.

Tom in NM
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Water heater Model

The model number is SAW6D

The instructional materials show a high limit / tstat module but go on to simply show it as the high limit cutoff (180°) and how to manually reset it. 

ac0gv
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I found nothing for that unit

Only option is a choice between 130 and 140 degree preset t-stats.

Tom in NM
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Choice of tstats?

Thanks but I'm confused. Reading the manuals I see no option to change any temp. The only thing I see is a high temp cutoff at 180°. Did I miss something?

ac0gv
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Mine had two

Mine years ago had two side by side, the180 is a safety shut down and the other 130 or 140 was the normal water temperature..

Tom in NM
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Water heater stat

Thanks. I'll check further. I guess there would have to be some sort of thermostat or the device would just keep heating. 
 

thanks

tom