Vaillant home combi Installation And Maintenance Instructions Manual

Vaillant home combi Installation And Maintenance Instructions Manual Manual pdf 21 page image

Adapting the unit to the heating installation 80020224355_00 HOME Installation and maintenance instructions 218.1.2 Resetting the remaining burner anti-cyclingtime▶ Hold the button down for more than 3 seconds.◁ is shown in the display.8.2 Setting the pump outputConditions: Modulating pumpThe product is equipped with a speed-regulated high-effi-ciency pump, which adjusts independently to the hydraulicconditions of the heating installation.If the heating installation is equipped with a low loss header,switch off the speed control and set the pump output to afixed value.▶ If required, use diagnostics code d.14 to adjust the set-ting for the operating-mode-dependent pump speed.▶ Set the diagnostics code. (→ Page 15)Overview of diagnostics codes (→ Page 30)Flow rate-pressure curves for 25 kW(pressure measured downstream of the valves)2134607050302040100 500 1000 1500 AB1 Maximum speed (by-pass closed)2 Maximum speed (de-fault setting for the by-pass)3 Minimum speed (defaultsetting for the bypass)4 Flow rate at maximumoutput (ΔT = 20K)A Throughput in circuit(l/h)B Available pressure(kPa)Flow rate-pressure curves for 30 kW(pressure measured downstream of the valves)21 34607050302040100 500 1000 1500 AB1 Maximum speed (by-pass closed)2 Maximum speed (de-fault setting for the by-pass)3 Minimum speed (defaultsetting for the bypass)4 Flow rate at maximumoutput (ΔT = 20K)A Throughput in circuit(l/h)B Available pressure(kPa)Flow rate-pressure curves for 35 kW(pressure measured downstream of the valves)21 34607050302040100 500 1000 1500 AB1 Maximum speed (by-pass closed)2 Maximum speed (de-fault setting for the by-pass)3 Minimum speed (defaultsetting for the bypass)4 Flow rate at maximumoutput (ΔT = 20K)A Throughput in circuit(l/h)B Available pressure(kPa)8.3 Setting the bypassConditions: Modulating pumpIf the pump operating parameter d.14 is set to Auto (∆plimit), the default setting must not be changed.Caution.Risk of material damage caused by incor-rect setting of the high-efficiency pumpWhen the pressure at the bypass valve isincreased (turning clockwise), malfunctionsmay occur if the pump output is set below100%.▶ In this case, set the pump output to5 = 100% using diagnostics parameterd.14.1▶ Regulate the pressure using the adjusting screw (1).▶ Fit the front panel. (→ Page 10)