How to Set Your Clear Comfort CCW100 or CCW50 Voltage For Version 2.1 CCW100 or CCW50 Systems Clear Comfort’s CCW100 and CCW50 can be powered by 120V or 230V. Please note:If you have a V2.1 CCW100 or CCW50 system, the voltage can easily be set through the system’s ballast switch. If you have a V2.2 CCW100 or CCW50 system, the voltage does not need to be set. How can we help you? Let’s get your questions answered. Go to Help Page