10
2.
Operation
2.3.3 Chimney sweep function
This function aids the performance of legally-required
emissions testing.
A short press of the Manual operation / chimney sweeper
function button switches on the lighting and display. Pres-
sing the button again starts the chimney sweeper function
– Fig. 9. With MESplus control, the boiler temperature is
regulated to approx. 70 °C for 45 min.
Fig. 9
chimney sweep function
(Operating phases)
Cancel
42
°C
(Symbol flashes)
The modulation mode or stratified charge operating
phases are displayed here.
The chimney sweep function can only be started in modu-
lation mode or stratified charge operating phases. In all
other operating phases, pressing the chimney sweep func-
tion button causes an information message to be displayed
(Fig. 10) and the function is not started.
The lighting is switched off after the lighting timer has
counted down (10 min.); the function or display remains un-
changed. The first button press only switches on the ligh-
ting.
Fig. 10
Start of chimney-sweepfunction
only possible in modulating-
or step-loading mode.
Back
Fig. 11
chimney sweep function
Modulation mode
Cancel
(Symbol flashes)
The chimney sweep function ends
– if the Cancel button or chimney sweep function button
is pressed – Fig. 11.
– automatically after about 45 minutes.
