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8 System Operation
NOTICE
This mode allows the electronic fuel/air ratio control to run within curve sections already en-
tered and thereby facilitates setting.
If the firing rate drops by 40 points, the VMS skips to ES mode, thereby controlling the outputs
automatically.
ES mode is also started if the switch 1 is set to FIRING RATE and the channel 2 switch is
pushed up.
Back to normal programming
Tap on a switch the VMS changes to EI mode
Continue programming in the usual way
8.1.4 Proceed with Programming
If the burner is omitted due to control shutoff, proceed as follows:
Undertake no further action on the VMS
Wait until the boiler temperature has fallen
Allow burner to start normally
Pre-purge.
the display shows EV
VMS control the outputs according to the pre-purge
Burner ignites
ES appears on the display
VMS controls the output according to the entered sub curve
NOTICE
The highest firing rate already entered would not be exceeded.
WARNING!
For your safety:
ES mode should be run only by trained personnel with the system under constant supervision.
Run to next firing-rate to be programmed
Push switch up
VMS switch back to EL mode
continue programming at the point where the burner cut-out previously occurred
NOTICE
Should the mains voltage to the Gerät has failed (display dark, operating LEDs out), before
switching back to AUTOMATIC, all curve points already entered will have been lost. Start pro-
gramming from beginning again.
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