Sinclair SWH-15/190TL Service Manual page 25

2.3.5 Temperature Setting
Temp displayed is the water temp. in the upper part of the tank. Default is 55 .
Method for set.
2.3.6 TIMER
User can set up a running start time and a stop time on a specifically by the timer function. The least
numbers of timer is ten minutes. Time on: User can set up a start time by this. The unit will auto run one time
between the set time and 24:00 on the same day.
Method for set.
Sanitary Water Heater Technical Manual