A.O. Smith 3400 - Manual (Page 52)

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• Installer: The installer can read all control parameters
and change default allowed parameters. This access
level is used to customize the control for a particular
installation.
• OEM: The OEM can read and change all parameters,
change sensor limits and burner control safety
parameters.
Different passwords exist in the Burner Control for each access
level. The end user level requires no password, but the installer
and OEM levels have unique passwords defined for them.
The installer and OEM passwords can be changed in the Burner
Control after logging in with the current password. When the
password is changed, it is saved for all future logins.
NOTE: For the S7999D System OI display, each boiler in a
multi-boiler configuration has its own set of installer and OEM
passwords. To avoid user confusion, the passwords should be
changed to the same password in each control, but there is no
requirement to do so. Make sure to record your password.
The user is notified that a new password is needed to change
a parameter (or until a password is entered successfully)—see
Figure 54. The user can continue viewing the configuration
parameters regardless of whether a password is entered
successfully.
The Burner Controls maintain a password time-out that limits the
scope of the password entry. Once a password is successfully
entered, the control starts an internal timer that expires after 10
minutes of inactivity. After the timer expires, the user is required
to re-enter a password before a parameter can be changed.
The user is not required to enter a configuration password for a
parameter that has a lower access level than the access level
achieved by an earlier password entry for any configuration
group (as long as the user stays in the configuration pages). The
user only needs to enter a password once until a parameter that
has a higher access level is selected.
KEYBOARD
Some pages request user entry of characters. When this type of
input is required, a keyboard page appears, as shown in Figure
55 on Page 53. The text box at the top of the screen displays the
current (or default) setting of the user input. The user can add to
this text, clear it, or change it.
CONFIGURE BUTTON
The configuration page allows the user to view and set parameters
that define how the connected Burner Control System R7910
functions.
The configuration page allows the user to view and set parameters
that define how the connected R7910A functions in the hydronic
heating system. All parameters are factory configured and only
a qualified service technician must perform the configuration
settings.
CONFIGURATION PASSWORD
Some parameters require a valid configuration password be
entered by the user before the parameter can be changed. The
password need only be entered once while the user remains
on the configuration pages and stays active. The display times
out after 10 minutes of inactivity. User will have to login again if
another secure parameter needs to be changed by pressing the
Padlock button.
Three levels of access to Burner Control parameters are
permitted. Each access level has defined rights when interfacing
with configuration and status parameters within the controls.
• End user: The end user can read or view the control
parameters and be allowed to change some operating
parameters, CH setpoint as an example. (The end user
does not need password).
FIGURE 52. SUMMARY STATUS PAGE
FIGURE 53. CONFIGURATION MENU PAGE
FIGURE 54. LOGIN REQUIRED