Vaillant ecoTEC exclusive SERIES Installation And Maintenance Instructions Manual

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

Contents

25ecoTEC exclusive installation and maintenance instructions / 0020017768_026.3.2 Hot water function• Switch on the appliance.• Turn on a hot water tap fully.• Press "i" to activate the status indicator.When the hot water function is working correctly thedisplay shows "S.14".Fig. 6.9 Display during hot water preparation6.3.3 Subsequent flushing through of the heatingsystem ("hot")• Allow the appliance to run until both the applianceand the heating system have reached their operatingtemperature.• Check the heating system for leaks.• Connect a hose to the drain valve which is located atthe lowest position in the heating system.• Shut off the appliance, open the drain valve and allvent valves on the radiators and allow the water toflow out of the heating system and the boiler quicklyand fully.• Close the drain valve.• Re-fill the heating system with water (see Chapter 6.1.1).• Drain water out of the system until a system pressureof 1.0 bar is reached. (The ideal measured value on thepressure gauge is 0.5 bar plus an extra amount corre-sponding to the highest point of the system above theboiler. A height of 10 m corresponds to a pressure in-crease on the pressure gauge of around1 bar. The pressure must not be less than 1 bar on anyinstallation.)If the system is to be protected by an inhibitor, itshould be added at this stage in accordance with themanufacturer's instructions.Further information can be obtained from Sentinel,Betz Dearborn Ltd., Tel.: 0151 420 9595, or from Fern-ox, Alpha–Fry technologies, Tel.: 0870 8700362.• Re-mount the enclosure of the boiler.• Attach the bottom cover to the boiler by sliding thefront edge of the cover into the lip at the bottom frontedge of the appliance chassis.• Carefully push the rear of the bottom cover upwardsuntil the spring retaining clips engage at the side ofthe appliance. It may be necessary to adapt the bot-tom cover by removing the easy break sections.6.4 Handing over the appliance to the owner• Set the controller for the maximum radiator tempera-ture to the required temperature.• Set the controller for the maximum hot water temper-ature to the required temperature.• Instruct the operator in the safe and efficient opera-tion of the boiler, paying particular attention to thefunctions of:– the ON/OFF switch of the boiler,– the controller for the maximum radiator tempera-ture,– the controller for the maximum hot water tempera-ture (only on combination boilers),– the pressure gauge.• Make the operator acquainted with the operation ofany external controllers.• Explain to the operator the importance of regularmaintenance by a competent heating engineer. It isstrongly recommended that a maintenance contractbe taken out to ensure regular maintenance. Furtherinformation can be obtained from Vaillant Service So-lutions (0870 6060 777).• Enter the operating pressure of the central heatingsystem, the heat feed (in kW) and the temperature dif-ference between the flow and return in the Bench-mark gas boiler commissioning checklist.If the appliance is not installed and commissioned in ac-cordance with manufacturer's instructions this can leadto invalidation of the guarantee (Note: Your legal rightsremain unaffected by this.)• Leave the operating and installation instructions withthe operator of the appliance.h Note!When you have finished the installation, attachthe sticker supplied (835593) to the front caseof the appliance in the user’s language.a Caution!The front cover should only be removed- for initial installation access- for servicing- for testingFor continuous and safe operation the frontcover must be fitted together with a correctlyfitted and sealed flue system.Adapting the appliance to the heating system 7