On my Suburban water heater, there is no adjusting the water temperature and frankly, what comes out is frightfully hot. It’s not a problem when my wife or I start water, we’re used to it – we turn more cold on than usual and it’s ok. The problem comes when we have guests and kids using the water; often times, they’re caught off guard with the hot.
At home, our water heater had an adjustment and we can easily bring the temperature down to safer levels for little hands. As I said, our camper’s water heater doesn’t have this. But, what I have found is that I can partially open the water heater bypass valve so that it lets some cold water into the stream so that it effectively mixes just after the hot water outlet on the tank.
Now our water is a safer temperature for our kids and guests!