A.O. Smith 3400 - Manual (Page 53)

53
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 57.
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 53 is not yet enabled
because the installer has not logged in).
NOTE: When the installer proceeds with the safety parameter
configuration, the control unlocks the safety parameters in this
group and marks them unusable. Failure to complete the entire
safety configuration procedure leaves the control in an un-
runnable state (lockout 2).
The Shift key on the left side of the screen shifts between upper
and lowercase characters. Pressing the Shift key toggles the
keyboard from one mode to the other (continuous pressing of the
Shift button is not required). The OK button should be pressed
when the user is done entering the text input. The Cancel button
on the bottom of the screen allows the user to ignore any text
changes that have been made and keep the original text value.
Pressing the OK or Cancel buttons returns the user to the page
displayed prior to the keyboard page.
LOGIN
Pressing the Login button allows entering the password from a
keyboard as shown in Figure 55. After the password is entered,
the OK button is selected. The Cancel button aborts the password
login.
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 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 56). 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 55. DEVICE LOGIN SCREEN
FIGURE 56. EXAMPLE OF CHANGE CONFIGURATION
PARAMETER PAGE
FIGURE 57. SAFETY VERIFICATION