Simple how to get the logic combi into high and low

Models covered by these instructions

24 LOGIC Combi 24
30 LOGIC Combi 30
35 LOGIC Combi 35

Setting to Maximum Rate:

Set up the boiler to operate at maximum rate by opening hot tap to maximum flow.


Setting to Minimum Rate:

1. Turn the CH temperature control knob into the 10 O‘clock position.

2. Create a CH demand by ensuring that the system controls are requesting heat and the boiler Mode Knob is in the Winter Position.

3. Within an overall time of 3 seconds, turn the CH temperature control knob fully clockwise, back to 10 O‘clock and then fully clockwise again.

4. “S” will be shown on the display and the boiler output will be reduced to minimum

5. The boiler will remain at minimum rate for 5 minutes before reverting to normal operation

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