A.O. Smith 100 Series Service Handbook page 51

LOGIN
Pressing the Login button allows entering the password from a keyboard as shown in Figure 36. After the password is entered, the
OK button is selected. The Cancel button aborts the password login.
FIGURE 36. DEVICE LOGIN SCREEN
WARNING: Explosion Hazard. Improper configuration can cause fuel buildup and explosion. Improper user operation may result in
property loss, physical injury or death.
Using the OI Displays to change parameters must be attempted by only experienced and/or licensed burner/boiler/water heater
operators and mechanics.
CHANGE PARAMETER SETTINGS
Change parameter settings by selecting the parameter on the page. A dialog box displays for the parameter with controls allowing
the user to change the value (see Figure 37). After changing the setting to a new value, press the OK button. Pressing the Cancel
button leaves the parameter unchanged. The changed setting is reflected on the screen and sent to the control when the OK button
is pressed.
FIGURE 37. EXAMPLE OF CHANGE CONFIGURATION PARAMETER PAGE
VERIFY
Pressing the Verify button displays safety configuration parameters for an additional verification step to commit the changes.
Safety parameters are grouped into blocks that include only safety parameters, not a mixture of safety data and non-safety data. All
parameters within the safety group undergo a verification process. A safety parameter group is identified on the display to indicate
when the configuration parameters are safety-related. Each safety parameter group is verified one at a time until all have been
verified. See Figure 38 on Page 52.
Like operating parameters, safety parameters can be viewed without the need to enter a password.
Safety parameter blocks that have been changed require verification. The verification steps do not have to be completed immediately;
the installer can move between and change parameter groups before the verification is done. A Verify button is enabled that allows
the installer to conduct verification sessions (the example of the Verify button in Figure 33 on Page 49 is not yet enabled because
the installer hasn't logged in).
Servicing should only be performed by a Qualified Service Agent 51