Vaillant ecoTEC plus Instructions For Installation And Servicing

Also see for ecoTEC plus 415: Instructions for installation and servicing Instructions for use Instructions for installation and servicing

Vaillant ecoTEC plus Instructions For Installation And Servicing Manual pdf 24 page image

Instructions for installation and servicing ecoTEC plus / 0020020828_05246 Natural gas to LPG conversionThe ecoTEC plus is able to be field adjusted for use onLPG – propane G31 gas. To enable conversion the use ofa combustion analyser is necessary.a Caution!After converting from natural gas to LPG, com-mission and check boiler function as describedin commissioning section of the servicing andinstallation instructions.a Caution!This conversion must only be carried out by acompetent person in accordance with the GasSafety (Installation and Use) Regulation 1998.In the UK CORGI registered installers undertakethe work to a safe and satisfactory standard.Before starting any work:• Isolate the electrical supply to the boiler.• Turn off the gas supply at the gas service cock fittedto the appliance.• Turn the gas valve “A” throttle screw (Ref fig.6.1) fullyclockwise.• Turn the “A” throttle screw back anti-clockwise therequired number of turns as stated in Table 9.1 for theboiler installed.• Ensure the gas analyser is set to the correct fuelsetting propane.To obtain conversion follow the procedure as listed below.• Ensure that the gas supply pressure is in the range 34 - 37mbar. The gas inlet working pressure can be checked at thepressure test point on the gas valve (fig 5.3.).• Turn gas supply on.• Ensure there is an external heat demand.• Enter the test programs by holding the “+” key, seefig 6.2. and turning power on.• Press “+” until “P.1” is displayed for max rate.• Press “ i ” to operate appliance in this mode.• Allow appliance to stabilise.• Measure the CO2 at the combustion products testpoint, see fig 9.1.• Check CO2 value (for case off) as stated in table 6.1for the boiler installed.• If required, using a screwdriver, adjust the “A” throttleto obtain correct value. (rotating anti-clockwise toincrease). Appliance will remain in this mode for 15 mi-nutes or exit by pressing “ i ” and “+” simultaneously.• Repeat the process above and select “P.2” for min rate.• Press “ i ” to operate appliance in this mode.• Allow appliance to stabilise.• Check CO 2 value (for case off) as stated in table 9.1for the boiler installed.• If required, using a 2mm allen key, adjust the “B” offsetto obtain correct value. (rotating clockwise to increase)• After checking the combustion, exit by pressing “ i ”and “+” simultaneously• Refit the chassis panel and the inner case. (Note theCO2 will increase slightly).• Fit the LPG conversion label to the type plate.• Lift the control box into place and fit the front casing.• Commission the boiler as described in the Installationand Servicing Instructions supplied with the boiler."A" throttle – "Pmax" rotateto increase"B" offset adjustment"Pmin" rotateto increaseFig. 6.1 Gas control valveFig. 6.2 ecoTEC plus controls6 Natural gas to LPG conversionNat. Gas G20 Propane G31Case off Case on Case off Case on ThrottleCO2% CO2 % CO2% CO2% AdjustmentecoTEC plus 415 9.1 + 0.2 - 0.5 9.3 + 0.2 - 0.5 10.1 + 0.5 - 0.5 10.3 + 0.5 - 0.5 5 turnsecoTEC plus 418 9.1 + 0.2 - 0.5 9.3 + 0.2 - 0.5 10.1 + 0.0 - 1.0 10.3 + 0.0 - 1.0 5 turnsecoTEC plus 428 9.1 + 0.2 - 0.5 9.3 + 0.2 - 0.5 10.5 + 0.3 - 0.8 10.7 + 0.3 - 0.8 5 turnsecoTEC plus 438 8.8 + 0.2 - 0.5 9.0 + 0.2 - 0.5 9.8 + 0.2 - 0.8 10.0 + 0.2 - 0.8 8 turnsTable 6.1