The result was two systems incorporating both PP plastic flue and traditional twin wall stainless steel. Centrotherm PP systems rises from each new boiler and water heater complete with non-return valve to high level, offsets to connect into the side of the main Centrotherm header system.
The header travels through the plantroom at high level with a 3 degree fall to allow for the removal of condensate. Before the systems exit the plantroom they convert to Dinak DWJ twin wall. The Dinak system has a 316L stainless steel inner liner , with 30mm insulation and an outer wall of 304L stainless steel this comes with a manufactures warranty of ten years.
The Dinak DWJ twin wall systems exit the plantroom wall and turn to rise vertically via 93 degree base tee with drain points. The flues rise clipped to the building and offset at roof level and then the flues terminate with open terminal ends to help aid the dispersal of the flue gases.