Vaillant ecoMAX SERIES Instructions For Installation And Servicing

Also see for ecoMAX 613/2 E: Instructions for use Instructions for use Installation instructions Installation instructions

Contents

Vaillant ecoMAX SERIES Instructions For Installation And Servicing Manual pdf 19 page image

19Boiler installation sequence 4Instructions for installation and servicing ecoMAX 194.9 Gas supplyFig. 4.6 Fitting the gas connection ecoMAX 800(picture shows ecoMAX 800)• Connect the compression gas service cock and 15 mmcopper outlet tail as supplied with the appliance andtighten.• Connect a gas supply pipe of not less than 15 mm dia-meter to the copper tail.• Tighten all connections.(Ensure the gas supply pipework is adequately sizedsuch that a 20 mbar gas pressure is available at theboiler inlet at full flow rate).Important note (ecoMAX 835 boiler only):The gas supply pipe must not be less than 22mm diameter.4.10 Central heating flow and return pipeworkFig. 4.7 Central heating flow and return pipework(picture shows ecoMAX 800)Before connecting the heating circuit to the boiler, allpipework and radiators must be thoroughly flushed toremove any installation debris.• Connect the central heating flow and return servicevalves to the appliance.• Connect the 22 mm copper pipe tails to the servicevalves as shown in the illustration and tighten the nuts.• Connect the central heating pipework to the flow andreturn tails.Two additional tubes are supplied with the appliance fortop connection of the flow and return pipework withinthe casing.