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6.10 Reset function
The reset function for meters and the reset table parameters appears on the bottom line
of the display, provided a reset is permitted on the current operating line
(enduser / commissioning / heating engineer).
After activation with the OK button, the display shows a fl ashing “Yes“.
After confi rmation with the OK button, the relevant parameter or meters will be reset.
6.11 Manual control
When manual control is active, the relays are no longer energized and deenergized
according to the control state, but are set to a predefi ned manual operating state depen-
ding on their function.
The burner relay energized in manual control can be deenergized by the electronic
temperature controller (TR).
Setpoint adjustment with manual control
After manual control has been activated, a change to the basic display must be made.
There, the maintenance / special mode symbol appears. Setpoint adjustment with ma-
nual control Press the Info button to switch to info display “Manual mode“, where the
setpoint can be adjusted.
6.12 Chimney sweep function
The chimney sweep function is activated by a short press (maximum 3 seconds) on
the chimney sweep button. It produces the operating state required for making fl ue gas
measurements.
STB test
The STB test (STB = safety limit thermostat) is activated by a long press (longer than 3
seconds) on the chimney sweep button. The button must be kept depressed during the
entire test. If released, the test will be aborted. The STB test is shown on the display.
The test must be made by qualifi ed staff since the boiler temperature will be
raised above the maximum limitations.
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2359Z140
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