Installation Guide

72 Rinnai Tankless Water Heater Installation and Operation Manual
Table 30: Temperature Settings
1. Press and hold the down arrow button.
2. While holding the down arrow button for 2
seconds, press and hold the “On/Off” button (hold
both buttons simultaneously) until “01” appears.
* These models have a default maximum temperature of 140°F (60°C) and an option to increase the
maximum temperature to 185°F (85°C) for CX models only. Refer to section “4.13 Configure
Parameter Settings” for further details.
† For Crossover Mode, minimum temperature setting is 120°F (49°C).
Temperature Settings
Parameter
Setting 01A
°F 98 100 102 104 106 108 110 115 120† 125 130 135 140
°C 37 38 39 40 41 42 43 46 49 52 54 57 60
Parameter
Setting 01b
°F 110 115 120 125 130 135 140 145 150 155 160 165 170 175 180 185
°C 43 46 49 52 54 57 60 63 66 68 71 74 77 79 82 85
The water heater can deliver water at only one temperature setting at a time. The available
temperatures are provided below. A temperature lower than 98°F (37°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 on the controller for 5 seconds while the water heater is OFF.
3. Use the up and down arrow buttons to scroll to the
desired information described in the “Performance
Data Table” on the next page.
4. To exit performance data, repeat step 2 above.
5. When complete, the set temperature appears in the
display.
Figure 79
Figure 78
Figure 77