Vertical cascade flues help comply with CORGI rules
Vertical cascade flues in multi-storey buildings, such as this example from Geminox, help comply with CORGI rules and reduce material use.
Geminox’s vertical cascade flue system enables up to 11 boilers on 11 levels in, say, an apartment block to share a common 110 mm-diameter flue riser and addresses the requirements of CORGI’s Appendix 1, which states that flue joints should be available to inspect. Using this vertical cascade flue only requires flue joints on the branch connection to each compartment and not in the riser itself. Geminox tells us that until recently, this flue system has been specified mostly on listed buildings, but is now being specified for more new-build apartments. The cascade flue system also uses less material than long horizontal flues — about 3 m per apartment compared with 5 to 8 m. The company’s technical team can provide on-site assistance for the first installation and flue design drawings for each project.