Vaillant ecoTEC PLUS SERIES Installation And Maintenance Manual

Also see for ecoTEC plus 612: Instructions for use Instructions for installation and servicing Installation and maintenance instructions Instructions for use Instructions for installation and servicing

Contents

33Installation and maintenance manual ecoTEC5.4.2 ecoTEC plus filling device (800 series)The ecoTEC plus appliance from the 800 series will bedelivered with a filling device.3124Fig. 5.2 Filling device ecoTEC plus (800 series)• Insert the double check valve (1) of the filling pipe atthe cold water shutoff valve and secure the doublecheck valve with the spring clip (2).• To fill, first open the stop valve (3).• Open the stop valve (4), so that water flows into theheating system. Fill the heating system as described inSection 5.4.4.• Close both stop valves after filling and detach the fill-ing device by pulling the double check valve from thecold water stop valve.NoteBoth stop valves must be closed while operat-ing the heating system and the filling pipe mustbe again detached at the double check valve.Fig. 5.3 Double check valve detached while heating5.4.3 Filling the heating system in ecoTEC pro andecoTEC plus (600 series)The ecoTEC pro appliances and the ecoTEC plus appli-ances from the 600 series do not come with a fillingdevice. In these appliances, water is filled in the heatingsystem through a filling pipe provided onsite.• Join a hose between a cold water dispensing valve andthe filling pipe of the heating system.• To fill, first open the cold water dispensing valve.• Open the stop valve on the filling pipe, so that waterflows into the heating system. Fill the heating systemas described in Section 5.4.4.• After filling, close the stop valve on the filling pipe andthe cold water dispensing valve and remove the fillinghose.5.4.4 Filling the heating system for the first timeNoteAs long as there is insufficient water pressurein the heating system, the display indicatorchanges between the error message F.22 andthe actual pressure indicator when the appli-ance is on.Fill the heating system as follows:• Open all heating element thermostat valves.• Check if both stop cocks on the heater are open.• Only in ecoTEC plus (800 series): Connect the fillingpipe as described in Section 5.4.2.• Only in ecoTEC plus (800 series) and in ecoTEC pro:As described in Section 5.4.3 join a hose between thecold water dispensing valve and the filling pipe of theheating system.• Open the cold water dispensing valve.• Slowly open the filling valve and let the water flow intothe heating system. Ventilate the lowest heating ele-ment until the water flows out at the vent valve with-out bubbles.• Ventilate all other heating elements until the heatingCommissioning Part I 5