Bock Water heaters OT300-A Installation And Operation Instruction Manual page 36

SECTION V: OPERATION (cont.)
ADJUSTING THE CONTROLS
The temperature setpoint has been adjusted to 120°F at the factory. Allow the water heater to
warm up to the factory adjusted setpoint and wait until the main operating control has shut
off gas to the burner. Wait 30 seconds following shut-off of gas, then adjust the setpoint to a
higher temperature.
Page 36
Figure 29: Steps to Adjust the Setpoint Temperature