Set the heating flow
Typical target is about 55°C if the house still warms. When you turn the heating knob, the display shows the set temperature in °C. When heating is on, it then shows the water temperature leaving the boiler to the radiators.
- Press the on/off button so the boiler is On, not Standby or Off.
- Press the Summer/Winter button until Winter is selected. Winter is heating and hot water. Summer is hot water only, with heating off even if the room controls ask for it.
- Turn the right-hand radiator knob (6). Clockwise raises the flow. Anticlockwise lowers it. Stop when the display shows the flow you want.
Leave the left-hand hot-water knob if you only came to lower the heating.
If an outdoor weather probe is fitted, the display shows a weather-compensation symbol and the heating knob no longer sets °C. It sets a curve from 1 to 9. For example, line 6 gives about 60°C flow when it is 10°C outside. That is still radiator water temperature, not room temperature.
If your fascia is a screen with up and down buttons and a pressure gauge on the right, use the E-Tec / Evoke steps.
Look up your exact model on Boiler Manuals if the fascia does not match. Then return to the Alpha flow-temperature page or the Boiler Optimiser.