326.5.3 Inspecting the water installationCheck the following topics:– Water supplyHas filter valve (accessory "Z261") or shut-off valve and 5 μm water filter respectively beeninstalled in supply line?Have admissible water pressure (1 – 10 bar) and admissible temperature (1 – 40 °C) been ob-served?Does the supply capacity match the steam generator and is the minimum internal diameter of8 mm of the supply pipe maintained throughout the entire length?Are all components and pipes properly secured and are all threaded connections securely tight-ened?Is the water system properly sealed?Does the water supply installation meet the requirements of the local regulations for water instal-lations?– Water drainIs the minimum internal diameter of the drain pipe from the unit to the funnel of ø30 mm main-tained throughout the entire length?Is the minimum internal diameter of the drain pipe from the funnel to the waste water line of thebuilding of ø40 mm maintained throughout the entire length?Has drain pipe been installed with a downslope of at least 15 %?Has the heat resistance of the material used been verified to be at least 100 °C?Is the drain hose properly secured (hose clamps at unit connection tightened)?Is there an air gap (min 2 cm) between the open end of the drain line and the funnel?Does the water drain installation meet the requirements of the local regulations for water instal-lations?