Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

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

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Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual Manual pdf 44 page image

Inspection and maintenance44 Installation and maintenance instructions ecoTEC exclusive 0020017768_0788.2 Filling/draining the heating installation8.2.1 Filling the unit and heating installationThe filling of the appliance and the heating system isdescribed in Section 6.1.8.2.2 Draining the unit> Close the maintenance cocks (if fitted) on the appli-ance.> Open the drain valves on the maintenance cocks.8.2.3 Draining the entire installation> Attach a hose to the filling/draining cock on the sys-tem.> 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.8.3 Servicing the compact thermal module8.3.1 Dismantle compact thermal modulea Danger!Risk of explosion from leaking mixer pipe!The mixer pipe between the gas regulator unitand the burner can only be guaranteed afterit has been inspected at the factory.> Do not open the mixer pipe.a Danger!Risk of scalding and burns from hot compo-nents!There is danger of being burned or scalded atthe compact thermal module and at all water-carrying components.> Allow the components to cool down beforestarting work.The 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.Proceed as follows to dismount it:> Turn the appliance off on the main switch.> Isolate the unit from the electrical mains.> Cut off the gas supply to the device.> Close the maintenance cocks on the appliance.> Remove the front cover from the device.> Swing off the electronic box.543216Fig. 8.2 Dismantling compact thermal module> Remove the screw (3) and remove the air inlet pipe(1) from the inlet spigot on the gas fitting.> Separate the gas supply pipe (6) on the gas fitting.Secure the gas corrugated pipe against twisting bybracing the pipe on the wrench surface while loosen-ing the union nut.b Caution!Risk of damage to the corrugated gas pipe!The corrugated gas pipe may become dam-aged if subjected to stress.> Do not suspend the compact thermal mod-ule by the flexible corrugated gas pipe.> Pull the two plugs of the ignition and grounding linesoff the ignition electrode (4).> Only ecoTEC exclusive 832: Pull the cable plug off thefan motor and the cable off the gas fitting.