28.
Once the commissioner is satisfied that the flue gas contains O
2
across setpoints P1-P9 at a
boiler pressure of 10bar use the+ key to quickly ramp the burner up to P9, once at P9 use the
- key to quickly ramp the burner down to P1 to confirm the flame is stable under transient load
conditions.
29.
Ramp the burner back up to P9, once settled press - and + to escape from the setpoint curve
setting procedure and release automatic operation mode. Escape back to the home screen. It
should now display
rather than
showing the setpoints are fully programmed and the burner is ready for automatic operation
mode.
Note: Before leaving the boiler unattended, the daily and weekly operating tests (see Section 6.8.1)
should be carried out to check the functions of all the safety interlocks.
30.
After commissioning, the boiler will need to be completely drained and refilled.
4.1.3 ADJUSTMENT OF THE YOKOGAWA UT-32A OPERATING CONTROLLER
Front panel keys are shown below and explained in the text that follows.
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