Vaillant ecoTEC pro 24 Installation And Maintenance Instructions Manual

Also see for ecoTEC pro 24: Instructions for use Instructions for installation and servicing Instructions for installation and servicing Instructions for installation and servicing

Start-up 70020244995_02 ecoTEC pro Installation and maintenance instructions 21H gas in m³/h P gas in kg/hQn,DHWnom.Heatout-putDHWNom. +5% -10% Nom. +5% -10%18.9 18.5 2.00 2.10 1.80 1.47 1.54 1.3223.5 23.0 2.49 2.61 2.24 1.83 1.92 1.6424.5 24.0 2.59 2.72 2.33 1.90 2.00 1.7127.8 27.2 2.94 3.09 2.65 2.16 2.27 1.94Conditions: Gas flow rate not in the permissible range▶ Check all of the piping and ensure that the gas flow ratesare correct.▶ Only put the product into operation once the gas flowrates have been corrected.Conditions: Gas flow rate in the permissible range▶ End the check programme P.01.▶ Allow the boiler to cool down by allowing pump overrun tooperate for a minimum of 2 minutes.▶ Record the boiler maximum gas flow rate onto theBenchmark gas boiler commissioning checklist.7.11.4 Checking the gas flow pressure1. Ensure that the gas inlet working pressure can beobtained with all other gas appliances in the propertyworking.2. Close the gas isolator cock.123. Use a screwdriver to undo the measuring nipple screw(1) (lower screw) at the gas valve.4. Connect a pressure gauge (2) to the measuring nipple(1).5. Open the gas isolator cock.6. Start up the product with the check programme P.01.7. In addition, ensure that maximum heat can be dissip-ated into the heating system by turning up the roomthermostat.8. With the boiler operating at full load check that the gasinlet working pressure at the reference test point com-plies with the requirements.– Permissible gas flow pressure for operation withG20 natural gas: 1.3 … 2.3 kPa (13.0 … 23.0 mbar)– Permissible gas flow pressure for operation withG31 liquid gas: 2.3 … 4.3 kPa (23.0 … 43.0 mbar)9. Should the pressure recorded at the reference test pointin the boiler be lower than indicated check if there isany blockage in the pipework or if the pipework is un-dersized.Conditions: Gas flow pressure not in the permissible rangeCaution.Risk of material damage and operatingfaults caused by incorrect gas connec-tion pressure.If the gas connection pressure lies outsidethe permissible range, this can cause oper-ating faults in and damage to the product.▶ Do not make any adjustments to theproduct.▶ Do not start up the product.▶ If you cannot correct the failure, notify the gas supplycompany and proceed as follows:▶ End the check programme P.01.▶ Allow the boiler to cool down by allowing pump overrunto operate for a minimum of two minutes.▶ Close the gas isolator cock.▶ Remove the pressure gauge and retighten the sealingscrew (1) for the measuring nipple.▶ Open the gas isolator cock.▶ Check the measuring nipple for gas tightness.▶ Close the gas isolator cock.▶ Install the front casing.▶ Disconnect the product from the power mains.▶ You must not start up the boiler.Conditions: Gas flow pressure in the permissible range▶ End the check programme P.01.▶ Allow the boiler to cool down allowing pump overrun tooperate for a minimum of two minutes.▶ Close the gas isolator cock.▶ Remove the pressure gauge and retighten the sealingscrew (1) for the measuring nipple.▶ Open the gas isolator cock.▶ Check the measuring nipple for gas tightness.▶ Install the front casing.▶ Reset boiler controls for normal operation.▶ Record the appliance gas inlet working pressure (kParesp. mbar) in the Benchmark gas boiler commissioningchecklist.