Vaillant ecoMAX 646 Installation And Maintenance Manual

Also see for ecoMAX 646: Instructions for use Installation and maintenance manual

Vaillant ecoMAX 646 Installation And Maintenance Manual Manual pdf 20 page image

Installation and maintenance manual ecoMAX 646 / 0020020158_0220Caution!After the filling process has finished• Close the filling unit and remove the filling hose.• Inspect all connections for leakage.1Fig. 5.1 Bleeding the appliance5.1.3 Hot water side filling and bleedingTo fill the DHW primary circuit, proceed as described inpoint 5.1.2.• Restart the venting program (P.0).5.1.4 Filling the siphon1Fig. 5.2 Filling the siphonDanger!If the device is operated with an empty conden-sate siphon, there is the danger of poisoningthrough escaping flue gases.Therefore, it is mandatory to fill the siphon asdescribed below before start-up.• Screw off the bottom (1) of the condensate siphon(fig. 5.2).• Fill the bottom about 3/4 full with water.• Screw the bottom back on the condensate siphon.5.2 Checking the gas setting5.2.1 Factory gas settingCaution!Ensure the appliance is connected to the cor-rect gas supply that it is intended to be usedon. It is important to check the gas rate andcheck the CO 2 content in the flue gasses, aspart of the commissioning process.The appliances are set ex works to the values listed intable 5.1.The appliance design corresponds to the gas familyavailable on site:• Check the CO2 percentage as described in chapter 5.2.3.Note!Please ask Vaillant customer service about thegas conversion of the appliance.• Check the CO2 percentage as described in chapter 5.2.3.Appliance type ecoMAX 646Appliance design Natural gas HDesignation on the appliance badge II2H3PFactory setting to Wobbe index Ws (in kWh/m3 ),corresponding to 0 °C / 1013 mbar 15.0Factory setting of the hot water output (in kW) 45Factory setting of the heating output (in kW) 35Table 5.1 Overview of factory gas settings5.2.2 Gas inlet working pressureCheck the inlet pressure as described below:• Remove the front case from the boiler.• Close the gas shutoff valve fitted to the boiler.• Loosen the sealing screw marked ”in” (1) on the gasvalve assembly (Fig. 5.3).• Connect a digital or a U gauge (2).• Open the gas shutoff valve fitted to the boiler.• Put the boiler into service (refer to the Instructionsfor Use supplied with the boiler).• Check the U gauge reading and ensure the inlet gaspressure is between the pressures detailed below.5 Initial start up and commissioning