Settings in the service menu31Condens 8300i W – 6721841533 (2022/12)Menu 3: basic settings▶ Press the ( key and * key simultaneously until the display showsL.1.▶ Press the key repeatedly until L.3 appears.▶ To confirm the selection: press OK key.▶ Selecting and setting the service function.The factory settings are depicted as highlighted in the following table.Table 19 Menu 3: basic settingsService function Settings/adjustment range Remark/restriction3-b1 Maximum approved heating capacity • 50 … 100 % (depending on the appliance output) ▶ Set the heating capacity in percent.▶ Measure the gas rate.▶ Compare the measurement with the settingtables ( page 55). Correct the setting inthe case of any deviation.3-b2 Time interval between stopping andstarting the burner in heating mode• 3 … 10 … 60 minutes The time interval determines the minimumwaiting time between switching off the burnerand switching it back on (standby period).3-b3 Temperature differential for restartingthe burner• -15 … -6 … -2 K ( °C) The difference between the current flowtemperature and the set flow temperature untilthe burner is switched on.3-C1 Maximum released DHW output • 50 … 100 %3-C2 Circulating pump • OFF• ON3-C3 DHW circulation pump (number ofstarts)• 1: 1 × 3 min/h• 2: 2 × 3 min/h• 3: 3 × 3 min/h• 4: 4 × 3 min/h• 5: 5 × 3 min/h• 6: 6 × 3 min/h• 7: permanentOnly available with DHW circulation pump ON.3-C7 Start thermal disinfection manually • OFF• ONWith activated thermal disinfection, the DHWcylinder is heated up to the set temperature setfor the thermal disinfection and kept at thistemperature for 20 min.3-CA DHW Mode • 0: Comfort mode, in comfort mode, the DHWcylinder is reheated when the temperaturedifferential is 5 K (5 °C) or more.• 1: ECO mode, in ECO mode, the DHW cylinder isreheated when the temperature differential is10 K (10 °C) or more.In comfort mode there is a higher DHW output.3-d1 Pump characteristic • 0: Pump output proportional to the heat output• 1: constant pressure 150 mbar• 2: constant pressure 200 mbar• 3: constant pressure 250 mbar• 4: constant pressure 300 mbar• 5: constant pressure 350 mbar• 6: constant pressure 400 mbar▶ In order to save energy and reduce any flownoise, set a low pump curve( Chapter 13.5, page 55).3-d2 Pump control mode • OFF• ON• ON: Save energy: intelligent shutdown ofheating pump for heating systems withweather-compensated controller. Theheating pump is only switched on if required.3-d3 Min. output of the heating pump • 10 ... 100 % Pump output at minimum heat output. Onlyavailable with pump characteristic 0.3-d4 Max. output of the heating pump • 10 ... 100 % Pump output at maximum heat output. Onlyavailable with pump characteristic 0.3-d6 Overrun time of the heating pump inheating mode• 1 … 2 … 60 minutes• 24 hoursThe pump overrun begins at the end of the heatdemand by the heating controller.