Residen al Gas Tankless Water Heater Use and Care Guide • 47
OPERATION
Unit Conversion Mode
Table 15: Water Heater Temperature Set Points
°F
100
102
104
106
108
110
115
120*
125
130
135
140
°C
38
39
40
41
42
43
46
49*
52
54
57
60
Units of measure can be changed from Imperial to Metric and vice versa. For example, temperature can be changed from
°F to °C. Flow rate will also change from gallons per minute to liters per minute when this se ng is changed. Follow this
procedure to change this se ng.
Table 16: Unit Conversion
Opera on
Screen on the Controller
Built-in Controller
1.
Turn on the 120 VAC power supply to the water heater.
2.
Press the ON/OFF bu on on the controller in order to turn the controller on.
3
The set point temperature will display as shown in the picture on the right (Example:
120°F).
4
Press and hold the SETTING bu on for 5 seconds to access the water heater A Mode.
5
The display will show code A00. Press the UP bu on once to display code A01. Press
the SETTING bu on to show the current temperature se ng. The temperature will
fl
ash.
6
Press the UP bu on to alternate between F (Fahrenheit) and C (Celsius).
7
Press the SETTING bu on to execute the change.
8
Press and hold the SETTING bu on to return the display to normal opera on. The
new set temperature will appear in the selected unit
(Example: 49°C).
