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412 Configure Parameter Settings <br /> 4121 Instructions <br /> A WARNING DO NOT adjust parameter settings unless specifically instructed to do so. <br /> Certain elements of the installation may require adjusting the parameters of the tankless water heater. <br /> To adjust the parameters: <br /> 1. Locate the PC Board (lower right side of unit). <br /> 2. Locate the two push buttons (A and B)on the PC Board. <br /> 3. Press the "A" button for 1 second. <br /> 1 <br /> n' <br /> 8 <br /> Figure 66 <br /> 4. Use the ♦ (Up) and ♦ (Down) buttons on the controller to select a o In Use <br /> setting number(see Parameter Settings Table below). <br /> Appazwal WJ% <br /> 0 � <br /> Hal wafer temp <br /> CD <br /> Figure 67 <br /> 5. Once the desired setting number is selected, use <br /> the "On/Off' button on the controller to change o In use I <br /> o In Use <br /> the selection for the setting number. u <br /> Example: Display will change from 01 A to 01 b [a <br /> Novo.wa.rr.p. App�wogw rro. <br /> for Maximum Temperature setting (as shown <br /> below). F,&-� oF� FA7L oa <br /> 6. To exit the parameters, press the "A" button for 1 Hal water temp wwafeNemp <br /> second. � O M On/Off <br /> Figure 68 <br /> Rinnai Tankless Water Heater Installation and Operation Manual 65 <br />