Crown Boiler BWF Series, Supplement Manual

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6
Xb Operation
A. General Information
This boiler uses a proprietary version of the Honeywell S9361A “integrated boiler control” to manage all boiler functions
including flame supervision, temperature control, and circulator operation. This control can operate one or two circulator zones
without the use of additional relays.
In accordance with the 2007 Energy and Independence Security Act, this control first attempts to use residual heat in the boiler
to satisfy a space heating demand before firing the burner. In this manual, this function is referred to as a “thermal purge”. For
additional information see Part C of this section.
B. Reading Status and Using Menu
The boiler’s status, as well as all parameters, are viewed and adjusted using the 3 digit LED and three buttons shown in Figure
10b.0. The S9361A has four basic modes of operation (also see Figure 10b.1):
1) Status Mode - This is the default mode of operation for the control. In it, the display alternates between
StA
and a
number indicating the current status of the boiler. A list and description of these status numbers is shown in Table 10b.2
and is also shown on the face of the control itself.
2) Operating Mode - Provides additional information about the current status of the boiler. Operating mode is entered by
pressing the
I
button shown in Figure 10b.0. When this button is first pressed in Status mode, the display will alternately
display
bt
and the current boiler water temperature as shown in Figure 10b.3. Pressing the
I
button again will display the
next line item shown in Table 10b.2. In the same manner it is possible to advance through all of the “parameters” shown
in Table 10b.2. To return to Status mode, press
I
repeatedly until
StA
once again appears on the display. Alternatively,
the control will return to Status mode if no key is touched for 30 minutes.
3) Error Mode - In Error mode, the control alternately displays
Err
and an error code. A list of these error codes is found on
the front of the control, as well as in Section XII of this manual (along with suggested corrective actions).
4) Adjustment Mode - Used to change parameters, such as high limit setting. See Part C for using Adjustment Mode.
FIGURE 10b .0: LOCATION/APPEARANCE OF LED, BUTTONS