2My Flue Assist is a DRU web application to check whether an intended concentric system is permissible and provides advice on how to adjust the appliance. Go to the DRU Service website for My Flue Assist. The information from the installation manual is always leading.7.3.2 Roof terminal (C31)The roof terminal can end in a sloping and a flat roof.The roof terminal can be supplied with an adhesive plate for a flat roof or with a universally adjustable tile for a sloping roof.When using a roof terminal (C31), the following applies:The construction of the chosen system has to be allowed. The working method below indicates how the permissibility is determined of a concentric system when using a roof terminal.1Count the number of 45° and 90° bends required (15° and 30° bends are also allowed; these are not counted).1Count the total number of whole metres of horizontal pipe length.1Count the total number of metres of vertical and/or sloping pipe length (roof terminal excluded).1Find the number of required bends and the total horizontal pipe length (see table 7-3, columns 1 and 2).1Find the required total vertical and/or sloping pipe length (see table 7-3, row 1).1A box with a letter means that the chosen concentric system is permitted.1Determine the adjustment of the appliance (see table 7-4).1Adjust the appliance correctly with, for instance, a restrictor slide and an air inlet guide (see section 8.2).Roof terminal Maestro 75XTU3-In case of a roof terminal without bends: first connect 0.8 metres of concentric system vertically on the appliance with a diameter of 200/130 mm. After the first 0.8 metres, reduce the concentric system to a 150/100 mm diameter, including a 150/100 mm roof terminal.-In case of a roof terminal with bends: first connect 0.8 metres of concentric system vertically on the appliance with a diameter of 200/130 mm. Make the concentric system with a 200/130 mm diameter, and reduce the concentric system immediately after the last bend to 150/100 mm, including 150/100 mm roof terminal.Installation manual19
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