62Part 9 - ControlsHotter water increases the risk ofscald injury. Scalding may occurwithin five (5) seconds at a settingof 140°F. Water temperatureover 125°F can instantly causesevere burns or death from scalds.Children, disabled, and elderlypersons are at the highest risk ofbeing scalded. See instruction manual before settingtemperature at the appliance. Feel water beforebathing or showering.B. Ignition ProcedureFigure 73 - Powering On the BoilerPress the ON/OFF button on the control panel to power on theboiler.The display shows the current operating mode.Operating ModeDescription DisplayStand-byCH requestsupply temperature displayedDHW requestDHW setpoint displayedPurging CycleCentral Heating Post CirculationDHW Circuit Post CirculationC. Central Heating (CH) Temperature AdjustmentIt is possible to set the central heating (CH) temperature by pressingthe buttons described in Figure 72, Item 8.The CH temperature range is 68 - 122oF (low temperature) and 96 -179oF (high temperature).NOTE: The CH Setpoint cannot be changed by pressing the CH +/-buttons if an outdoor sensor is connected to the boiler and AUTO isactive. When using an outdoor sensor, the boiler will automaticallychange the CH target temperature based on the Outdoor HeatingCurveD. Domestic Hot Water (DHW) Temperature AdjustmentNot for non-COMBI using AquastatIt is possible to set the domestic hot water (DHW) temperature bypressing the buttons described in Figure 72, Item 2.The DHW temperature range is 97 - 140oF. The previously set value willflash on the display.Figure 74 - Central Heating (CH) Temperature AdjustmentFigure 75 - Domestic Hot Water (DHW) Temperature AdjustmentDANGER
