Vaillant ecoTEC exclusive SERIES Installation And Maintenance Instructions Manual

Also see for ecoTEC exclusive 832: Installation and maintenance instructions Installation and maintenance instructions

Contents

ecoTEC exclusive installation and maintenance instructions / 0020017768_02308 Inspection and maintenance8.1 Inspection and maintenance intervalsRegular maintenance and service is recommended toensure permanent safe and efficient operation of theboiler. The frequency of maintenance and service de-pends upon the individual installation conditions andupon the use the appliance is put to. An inspection mustbe performed once a year.d Danger!It is a legal requirement that all maintenancework be only performed by trained personnel(CORGI registered). Inspection and mainte-nance work which is improperly carried out canlead to injury and material damage.In order to ensure all the functions of the Vaillant appli-ance over a long period, only genuine Vaillant spareparts may be used when undertaking maintenance, serv-ice and repair work. Any spare parts which might be re-quired are contained in the current Vaillant spare partscatalogues. Further information can be obtained fromVaillant Customer Service Centres.8.2 General inspection and maintenance instructionsOnly genuine Vaillant spare parts may be used for in-spections, maintenance and repair work to ensure theperfect long-term working order of all functions of yourVaillant appliance and to prevent the allowed series con-dition from being changed.Any spare parts which might be required are listed inthe relevant current spare parts catalogues. Informationcan be obtained from Vaillant Service Solutions(08706060777).Safety instructionsh Note!If it is necessary to keep the main switch on forcertain inspection and maintenance, this is indi-cated in the description of the maintenance task.d Danger!The supply terminals of the device are undervoltage even if the mains switch is off.Always perform the following steps prior to maintenancework:• Switch off the mains switch.• Disconnect the device from the mains supply bypulling the power plug or de-energising the device bymeans of a separator with a contact opening of atleast 3 mm (e. g. fuses or circuit breakers).• Close the gas shut-off valve.• Close the maintenance cocks (if fitted) in the heatingflow and return and the cold water inlet valve on theinlet combination.• Remove the front cover from the device.Always perform the following steps after performingany maintenance work:• Open the heating flow and return and the cold waterinlet valve.• Refill the device, if necessary, with hot water up toa pressure of between 1.0 and 2.0 bar and vent theheating system.• Open the gas shut-off cock.• Re-connect the appliance to the electrical mains byinserting the plug into the wall plug socket and switchthe main switch on.• Check the appliance for gas and water leaks.• If necessary, refill and re-vent the heating system.• Reapply the front cover to the device.• Check all the functions of the appliance.8.3 Filling/draining the heating installation8.3.1 Filling the unit and heating installationThe filling of the appliance and the heating system is de-scribed in Section 6.1.8.3.2 Draining the unit• Close the maintenance cocks (if fitted) on the appliance.• Open the drain valves on the maintenance cocks.8.3.3 Draining the entire installation• Attach a hose to the filling/draining cock on the system.• Bring the open end of the hose to an appropriatedrain point.• Check that the maintenance cocks of the boiler areopen.• Open the filling/drain cock.• Open the bleed valves on the radiators.Start at the highest radiator and then work from thetop to the bottom.• When the water has drained out of the heating sys-tem, close the bleeding valves on the radiators andclose the filling/drain cock again.8.4 Servicing the compact thermal module8.4.1 Dismantle compact thermal moduleThe compact thermal module consists of a speed-con-trolled fan, the gas fitting, the gas mixer pipe for the fanpre-mix burner and the pre-mix burner itself. These fourindividual parts form the compact thermal module com-ponent.d Danger!Danger of explosion through gas leakage!The mixer tube between the gas control unitand burner must not be opened. It can only beguaranteed that this component is gas-tightafter it has been inspected at the factory.d Danger!There is danger of being burned or scalded atthe compact thermal module and at all compo-nents carrying water. Only carry out work onthese components once they have cooled down.8 Inspection and maintenance