IEW THINGS DIFFERENTLY DO YOU REALLY NEED TWO BOILERS TO MAKE A CASCADE? THISION L PLUS THINK AGAIN. The NEW THISION L PLUS is a wall mounted boiler with internal cascade. 4 August 2020 www.cibsejournal.com p04.CIBSEMagAug20.indd 4 www.t-l-plus.com 20/07/2020 15:53