Lamtec ETAMATIC OEM, Quick Reference

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8 Internal Burner Firing Rate Controller
8 Internal Burner Firing Rate Controller
8.1 Purpose
The internal firing rate controller calculates the burner firing rate against a pre-defined setpoint
value (e.g. as a function of temperature or pressure) by comparison with the actual value. This
position will be transferred to the electronic fuel/air ratio control as a default value.
8.2 Moving Screen "Actual Temperature is too high"
8.3 Changing Setpoint of Burner-Firing-Rate Controller
see chapter 8.5 How to Change the Burner-Firing-Rate Controller with the Customer Interface
8.4 Burner-Firing-Rate specified by hand
It is also possible to switch the ETAMATIC OEM to "Manual Control" with the terminals. By
short-circuiting the Pt100 signal (e.g. bridge terminal 19 and 20) the burner firing rate control
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ler 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.
8.5 How to Change the Burner-Firing-Rate Controller with the Customer Interface
Keep pressing the HAND key for more than 5sec., to switch the customer interface to the
mode „set setpoints of burner firing rate controller“. This is only possible when burner firing
rate controller is activated. At the same time, the HAND mode for manual firing rate input ends.
In the mode „setting firing rate controller“ the LED in the manual-key flashes. The lower display
line shows the output regulator adjustment, the setpoint value and the actual value.
Active constant controller:
The Gerät can be started nevertheless by pressing the manual mode key provided that
the maximum temperature is not exceeded.
By pressing the manual mode key once more you switch to AUTO mode.
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.
Press key MANUAL again to cancel firing rate controller.
Press the key for 5 s long. Display = actual setpoint 1 or 2.
This depends on the choice of setpoint values of terminal 50:
Terminal 50 = 0 V = setpoint value 1
Terminal 50 = 24 V = setpoint value 2