Bryan Boilers & 300, 250, 200 Change Parameter Settings, Safety Verification Configure Verify

validates all password entry attempts with the boiler, but doesn’t conduct the validation itself. The boiler has sole responsibility to accept a password entry.

The display gets information from each boiler about the access level settings for the status and configuration parameters.

The installer and OEM passwords can be changed in the boiler after logging in with the current password. When the password is changed at the S7999B1026 it is saved in the R7910 and effective for all future logins.

NOTE:

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 setting in all the boilers, but there is no requirement to do so.

2.2.8CHANGE PARAMETER SETTINGS

Figure 17 Change Parameter Dialog

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 (Figure 17).

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 boiler when the OK button is pressed.

Date: 8-4-2010

Revision: 0

Form: 2396

There are two classes of parameters.

Non-Safety:Non-safety parameters can be changed without placing the boiler in a dangerous state. These parameters typically do not require a password to modify.

Safety: Safety parameters can be viewed the same way non-safety parameters can be viewed. If the user makes no attempt to change a safety parameter, the user isn’t required to enter safety verification mode.

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, (see paragraph 2.2.9 Safety Verification). A safety parameter group is identified on the display to indicate when the configuration parameters are safety-related.

2.2.9SAFETY VERIFICATION

►► CONFIGURE ►VERIFY

Figure 18 Safety Parameter Verification

For safety configuration parameters, safety verification is required to commit the changes.

All safety configuration parameters in the group should have the same access level. If this condition isn’t so, the user is asked to enter another password when a higher access level is needed.

Each safety parameter group is verified one at a time until all have been verified (Figure 18).

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