Vaillant ecoTEC SERIES Operating Manual

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Vaillant ecoTEC SERIES Operating Manual Manual pdf 15 page image

15Operating manual ecoTEC 0020052777_00a Caution!Inappropriate alterations can cause damage!If your gas-fired boiler still does not start afterthe third attempt to suppress the fault, consulta recognised expert technician company orVaillant Service Solutions for advice.4.7.3 Faults in the air/flue gas routingThe appliances are fitted with a blower. If the blowerdoes not work properly, the appliance will switch itselfoff.The and symbols as well as the error message"F.32" appear in the display.a Caution!Inappropriate alterations can cause damage!If this error message appears consult a recog-nised expert technician company for advice.4.7.4 Feeding the device/heating systemThe filling pressure must be between 1.0 and 2.0 barwhen the system is cold in order for the heating instal-lation to operate properly (see Chapter 4.2.2). If thepressure is less, top up the system with water.If the heating system extends over several floors, thesystem may require a higher filling pressure. Ask yourengineer for details.a Caution!Risk of damage to the gas-fired wall-mountedboiler!Use only clean tap-water to fill the heating sys-tem.The addition of chemicals such as e.g. frost andcorrosion prevention materials (inhibitors) isnot permitted.Otherwise it could result in damage to sealsand diaphragms as well as noises during theheating operation.Vaillant assumes no liability for this and suchconsequential damages.To fill up and to re-fill the heating system, you can nor-mally use tap water. However in exceptions, the waterquality might not be suitable for filling in the heatingsystem (heavily corrosive or extremely calciferouswater). In these kind of situations contact your recog-nised expert technician company.123Fig. 4.14 Filling the heating installationProceed as follows to fill the system:• Open all radiator valves (thermostat valves) of thesystem.• Connect the filling tap of the installation to a coldwater draw-off valve with a hose (your heating engi-neer should have shown you the filling fittings and ex-plained the filling and draining of the system).• Open the filling cock slowly.• Slowly turn the draw-off valve on and top up the sys-tem with water until the required pressure is shown atthe pressure gauge (1) or in the display (3).You can call up the precise value for the pressure in thedisplay.• Activate the pressure display by pressing the "-" but-ton (2). After 5 seconds the display returns to thefeed temperature. You can also switch between thecontinuous display of temperature or pressure bykeeping the "-" button pressed for roughly 5 seconds.• Turn the tap off.• Bleed all the radiators.• Then check the installation pressure at the pressuregauge or display and add more water if necessary.• Close the filling cock and remove the filling hose.Operation 4