Rinnai Demand Duo R-Series Installation And Operation Manual page 40

Figure 33
Display
Increases hot water
temperature
Enables controller
when multiple
controllers are used
A temperature lower than 120°F (49°C) can be obtained at the tap by mixing with cold water.
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the "On/Off"
button for 5 seconds while the water heater is OFF.
Table 10: Available Temperature Settings
Fahrenheit °F 120 125
Celsius °C 48.9 51.7
40
Temperature Settings Available
130 135 140 145
54.4 57.2 60 62.8
Demand Duo™ R-Series (REC) Installation and Operation Manual
Turns the water heater
on or off
Decreases hot water
temperature
150 155 160 165
65.5 68.3 71.1 73.9
170 175 180
76.7 79.4 82.2