4 Set-up and installationInstallation and operating instructions27Gas Combi UnitFloor-standing gas condensing boiler with integrated heat storage008.1543899_02 – 04/2019 – EN4.6.1 Aligning the connections of the heatinginflow and return flowThe connections of the heating supply and return can be directedupwards or backwards in order to adapt it optimally to the structuralconditions of the installation site.The device is supplied with upwards aligned connections asstandard. For this type of connection, the cover hood must be cutout in the area of the heating lines.Fig. 4-19 Cut-out for heating linesThe following conversion steps are required in order to directthe connections to the rear out of the device:1 Remove the protective cover and top thermal insulation(see Chap. 4.4.3).Fig. 4-20 Aligning the heating inflow and return flow upwards2 Pull the two securing clips off the connection couplings(Fig. 4-20, item C).3 Pull off the two connection couplings (Fig. 4-20, item B).CAUTIONWhen working on the hydraulics, pay attention to the in-stallation position of the O-rings to avoid damaging themand causing leaks.▪ Always place O-rings on the part to be inserted after dis-assembly or before assembly (see Fig. 4-21).▪ The heating lines must be connected free of tension viathe plug connectors. Establish a suitable strain relief es-pecially when connecting with flexible lines (not open todiffusion!) (see Fig. 4-24).Fig. 4-21 Hydraulic system plug connectors4 Remove the retaining plate (Fig. 4-20, item A).5 Pull off the sealing plug securing clip (Fig. 4-20, item D).6 Pull out the sealing plug (Fig. 4-20, item E).7 Turn the elbow (Fig. 4-20, item H) 90° to the rear.8 Pull the securing clip off the manifold (Fig. 4-20, item G).
