The SuperflowTM SFC 160-1 / SFC199-1 now includes an innovative wireless cascade feature which allows up to 8 units to operate together for instances where a single SuperflowTM unit is not large enough. Create a cascade system using multiple SuperflowTM units to meet your domestic hot water and space heating needs with the added benefits of greater efficiency and redundancy. The SuperflowTM wireless cascade system is very easy to set up and flexible enough for your most demanding applications.