Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual

Vaillant ECOTEC EXCLUSIVE 627 VU 256/5-7 Installation And Maintenance Instructions Manual Manual pdf 48 page image

Appendix48 Installation and maintenance instructions ecoTEC exclusive 0020193966_011 Main PCB2 Operator control panel PCB3 All-gas sensor4 Gas valve assembly5 Outdoor temperature sensor, flow temperaturesensor (optional, external), DCF receiver6 Circulation pump remote control7 Return temperature sensor8 Flow temperature sensor9 Fan10 Contact thermostat/burner off11 24 V DC room thermostat12 Bus connection (digital room thermostat/control)13 Prioritising diverter valve14 Water pressure sensor15 Cylinder temperature sensor16 Cylinder contact "C1/C2"17 Internal heating circuit flow rate sensor18 Internal pump19 Gas family coding resistor20 Additional relay (select via D.026)21 Circulation pump22 Ignition electrodeF Inspection and maintenance work – OverviewNoteThe table below lists the manufacturer requirements with respect to minimum inspection and maintenance inter-vals. If national regulations and directives require shorter inspection and maintenance intervals, you should ob-serve these instead of the intervals listed in the table.No. Work Inspection(annual)Mainten-ance(must becarried outat regularintervals)1Check the air/flue pipe for leak-tightness and to ensure that it is fastened correctly. Make surethat it is not blocked or damaged and has been installed in accordance with the relevant set-upinstructions.X X2 Check the general condition of the product. Remove any dirt from the product and the vacuumchamber. X X3 Visually inspect the general condition of the product. In doing so, pay particular attention to signsof corrosion, soot and other defects. X X4 Check the gas flow pressure at maximum heat input. If the gas flow pressure is not within thecorrect range, carry out maintenance work. X X5 Check the product's CO₂ content (air ratio) and adjust this, if required. Keep a record of this. X X6 Disconnect the product from the power grid. Check that the electrical plug connections and otherconnections are seated correctly and correct these if necessary. X X7 Close the gas stopcock and the service valves. X8Drain the product on the water side (observe the manometer). Check the pre-charge pressureof the expansion vessel and top the vessel up, if necessary (approx. 0.3 bar below the systemfilling pressure).X9 Remove the compact thermal module. X10Check the insulating mats in the combustion area. If you notice any damage, replace the insu-lating mats. Replace the burner flange seal each time it is opened and accordingly each timemaintenance work is carried out.X11 Clean the heat exchanger. X12 Check the burner for damage and replace it if necessary. X13 Check the condensate trap in the product, clean and fill this, if required. X X14 Install the compact thermal module. Caution: Replace the seals. X15 Open the gas stopcock, reconnect the product to the mains and switch it on. X X16 Open the service valves, fill up the product/heating installation to 1.0-2.0 bar (depending on thestatic height of the heating installation) and start the purging programme P.00. X17 Run a function test for the product and the heating installation – especially the domestic hotwater generation. Then purge the installation again, if required. X X18 Check the gas type. X19 Visually inspect the ignition and burner behaviour. X X20 Check the CO₂ content (the air ratio) of the product again. X