State 520 - Manual (Page 37)

Normal Operation
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DO NOT set to 185 °F if you use your water heater in a recirculation system. This
will cause damage to the heater and void the warranty.
(unit:°F)
 The temperature has been preset at the factory to 120°F (49°C).
 If temperatures other than the ones listed above are required, the remote controller can provide a
couple more temperature options. Refer to p. 7 for a list of available temperatures on the remote
controller.
 When the flow sensor detects flow higher than 0.5 GPM, a single LED tick mark on the left side of the
3‐digit 7‐Seg. LED will blink to indicate that the unit is working.
1. Take off the water heater’s front cover.
2. Press the either “Increase” button or the “Decrease” button on the computer board to increase
or decrease the set temperature. The 3‐digit 7‐Seg. LED will display the available set
temperatures. (Figure.1)
3. Scroll to the desired set temperature.
100 105 110 115 120 125 135 140 145 150 155 160 165 170 175 185
Set temperature (Example 110°F)
Temperatures available
Computer board
Figure.1
Example: tick mark next to the 110°F set temperature display
Decrease button
3‐digit 7‐Seg LED
Increase button