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How to Adjust the Flow Temperature on an Ideal Logic 2

Set the heating flow with the radiator knob on the right. The video takes it from 75°C down to 55°C.

This fascia has a pressure gauge, a hot-water knob, a central display, and the heating knob on the right. Mode is a button under the display, not a knob. It is Logic 2, not the earlier Logic / Logic+ panel with a MODE knob on the far right.

Ideal Logic 2 control panel. The right-hand radiator knob is heating.
  1. The right-hand knob with the radiator symbol is heating flow. The left knob with the tap is hot water — leave that if you only came to lower the heating.
  2. Turn the radiator knob until the display’s heating reading shows the flow you want. Typical range is about 30°C to 80°C.
  3. Stop around 55°C if the house still warms. Add time on the programmer if rooms take longer to come up.

Video

Look up your exact model on Boiler Manuals if the fascia does not match. Then return to the Ideal flow-temperature page or the Boiler Optimiser.