10.3 Inlet pressure check.The appliance is pre-set to give the correct heatinput at the inlet pressure shown in section 2 ofthis manual. No adjustment is necessary.1. Ensure that the appliance is switched OFF, thenfit a pressure gauge at the test point. The testpoint is on the inlet ‘T’ connector (See figure 25).Check the pressure with the appliance alight andset at maximum output.2. After checking, turn off the appliance. Removethe pressure gauge and replace the test pointsealing screw.3. Light the appliance. Turn to the maximum outputposition and test around the sealing screw for gas soundness with a suitable leakdetection fluid.When the above checks from section 10.2 and 10.3 have been completed closethe isolating valve on the inlet ‘T’ connector.11. CERAMIC WALLS INSTALLATION1. Fit the ceramic rear wall inside the “U”bracket on the back face of the burnercompartment. Push the ceramic wall flatagainst the back face of the burnercompartment (See figure 26).2. Fit the ceramic side walls against the sidefaces of the burner compartment. Thebottom edges of the walls should rest in theledges at the sides of the firebox. Slidethem in from the front and ensure that theytouch the rear wall. Be careful not todamage the edges of the sidewalls (See figure 27).Page 31© Baxi Heating U.K. Limited 2009.INSTALLER GUIDEFigure 25. Pressure test pointFigure 27. Ceramic side walls installationFigure 26.