ADJUSTING THE TEMPERATURE ON THE
ELECTRONIC CONTROL DISPLAY
Adjusting the Temperature Set Point - The thermostat of this water heater has been factory set at its lowest position. It is adjustable and must be reset to the desired temperature setting to reduce the risk of scald injury. The electronic control display temperature should be set at approximately 120°F (49°C) and this is the preferred starting point, see Figure 21 Some states have a requirement for a lower setting. If you need hotter water, follow directions for temperature adjustment, but beware of the warnings in this section.
Pressing the “COOLER” 
button decreases temperature and pressing the “HOTTER”
button increases the temperature.
To avoid any unintentional changes in water temperature settings, the control has a tamper resistant feature for changing the temperature setting. To change the temperature setting follow these instructions:
1.“Unlock” the temperature indicators by holding down both “COOLER” and “HOTTER” temperature adjustment buttons at the same time for one second (See Figure 21). The temperature indicators will light up and will only remain on for 30 seconds if no further buttons are pressed. After 30 seconds the control will go back to “Lock” mode (“Lock” mode indicates a temperature setting is locked into the control memory).
2.Release both of the temperature adjustment buttons.
A. To decrease the temperature press and release the “COOLER” 
button until the desired setting is reached.
B. To increase the temperature press and release the “HOTTER” 
button until the desired setting is reached.
NOTE: Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the heater.
Figure 21.
Gas Control Valve/Thermostat Settings
HOTTER 
COOLER
Electronic Control Display
Water
Temperature
°F
Time for 1st Degree Burn (Less Severe Burns)
Time for Permanent Burns
2nd & 3rd Degree
(Most Severe Burns)
110 | (normal shower temp.) |
|
116 | (pain threshold) |
|
116 | 35 minutes | 45 minutes |
122 | 1 minute | 5 minutes |
131 | 5 seconds | 25 seconds |
140 | 2 seconds | 5 seconds |
149 | 1 second | 2 seconds |
154 | instantaneous | 1 second |
(U.S. Government Memorandum, C.P.S.C., Peter L. Armstrong, Sept. 15,1978)
Table 2
17
