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8 Internal Burner Firing Rate Controller
8.14 Manual Control
You also may switch the ETAMATIC OEM to "Manual Control" with the terminals. By short-
circuiting the PT 100 signal (e.g. bridge terminal 19 and 20) the burner firing rate controller is
switched off. The fuel/air ratio controller then directly follows the input at the default firing rate
input. The display shows LE instead of HA.
NOTICE
Only use manual control while monitoring the system.
8.15 Meaning of the Display
8.16 How to Adjust the Burner Firing Rate Controller
Only adjust the burner firing rate controller with the parameters.
8.17 Control Range
The control range lies around the setpoint. The content of the "Burner on" parameter is sub-
tracted from the setpoint value to form the switch-on value. The value of the "Upper control
range" parameter (P 803) is added to the setpoint value to form the upper limit of the control
range. The control range may therefore lie asymmetrically around the setpoint.The shut-off
press key "Manual" to move the regular firing rate input of the firing rate controller.
press the keys 2 and 3 to variegate the burner firing rate.
to cancel firing rate controller, press key "Manual" again
Display in "FIRING RATE" switch position
setpoint actual value regular firing
rate input
internal
firing rate
Display in mode "MANUAL"
regular firing
rate input
(via channel 1)
internal firing
rate
actual value
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