How do you adjust temperature on a delta tub faucet?
The temperature adjustment on a single handle Delta faucet is in the valve operation itself, however, the high temperature limit is adjustable, and is probably what you are referring to. To adjust it, you have to remove the handle from the trim. Beneath the handle are two geared rings which control the high temperature limit. Remove the inner ring (they may both fall out) and turn it CCW (if memory serves..) to raise the high limit. If I got it backwards, turn the ring CW and try again.
