The temperature can be adjusted slightly on most continuous flow hot water units, but this is a job that's strictly for licensed plumbers only. Have a chat to your plumber and ask them for assistance.
Very important, please note:
- Product information will specific about dos and don’ts. This information will tell you what you can and can’t do regarding managing temperatures.
- Any changes made to your unit will void your warranty. That could be an expensive mistake.
Changing temperatures may be potentially dangerous. This a very much a job best left to the professionals.