Rinnai CU199 and CU160 Commercial tankless water heaters have integrated Cascade Logic. Cascade Cables are used to electronically connect up to 24 water heaters together. Once connected, using Cascade Logic the electrical connection will rotate the water heater operation across your system. This helps to ensure the entire system gets equal usage and functions as a single hot water source. In a commercial installation where you may need to use more than one unit, Rinnai offers many Tankless Rack Systems for installation flexibility as well. The Tankless Rack system is available for wall mounted or freestanding installation for two or more units.
The REU-CSA-C1 is a 10 foot cable. One cable is required for each water heater.