The BL Micro Controller Boiler Control System offers significant advancements, including many new individual monitoring points, as compared to our popular XJ1.
The BL Controller is the smart answer to troubleshooting. It works for you and with you, identifying problems and suggesting solutions in a plain, descriptive English display.

Control Panels

Easy-to-see operation and emergency lights:

Green (normal)
Yellow (warning)
Red (emergency)

2 push buttons and a scroll selector only

One push button to start
Rotary selector switch to modify setting
Examples

It gives you following information to help the operator to maintain the boiler at good conditions or to solve the problems it may have:

  • 52* alarms in plain English (17 with XJ-1)
  • 37* warning messages in plain English (10 with XJ-1)
  • possible cause or the solution to the problem related to each alarms and warnings.

*The number of alarms and warnings may change without notice

Example (alarm history):

HI FIRE 11,08:30 BURNER ALARM 5
NO FLAMECOMBUSTION STAGE
NO FUEL OR UVSENSOR ERROR


Some alarms and warnings are added

Example:

Feed water temperature increase

Feed water pump time increase


Some alarms and warnings are divided to give more detailed information

Example:

12 Alarms and 6 Warnings for water level probe problem

WATER ALARM 7
M or S PROBE ON & L PROBE OFF
L PROBE ERROR OPEN

When is there is no back up probe D

WATER CHECK 7
L, M= ON & S=OFF EXCESSS FEED TIME
S PROBE ERROR OPEN

When is there is no back up probe D
Efficiency

The new controller makes the boiler more efficient by:

  • Setting the pre-purge timing optimum to the boiler
    Honeywell: standard 10s, IRI 30s
    New controller standard 10s, IRI 20s
  • Purge Cancel function∗ ignores the post purge when fast restart required. It eliminates the loss and shorten response.
  • ∗This function is not set as default

When restart requirement occur during the post-purge, boiler consider post-purge time as pre-purge and shorten the pre-purge timing. It eliminates the loss and shortens response.