Quick Menu Installation Does the waterproofing kit go above or below the membrane? How is the Warmup Waterproofing Kit installed? Do I need a waterproofing kit? Preparing for your project Do I need more than one waterproofing kit? Do I need a waterproofing kit? Do Warmup outdoor controls have GFEP protection? Do I need to provide a transformer to wire in 3-phase? Wiring Do Warmup outdoor controls have GFEP protection? What is the largest breaker allowed by code to power a snow melting system? How many Mats or Amps can I connect to the CommBox? Can I use the Commbox or Resibox with single phase electric? What are the amperage capabilities of each Box at each voltage? Miscellaneous questions Will any third party sensor work with the CommBox or ResiBox? How long should I program my CommBox to melt snow? Can one AirSense be used with two CommBoxes? Programming Where are the DIP switches located on the COMMBOX-600? What do each of the COMMBOX DIP Switches Mean? Programming your COMMBOX-600 Troubleshooting What Does the HI/LO Error message mean on my COMMBOX? What does COMMBOX error code “SensErr 2” mean? What does COMMBOX error code “SensErr 1” mean? Can I use the Commbox or Resibox with single phase electric? The BOX system can be used with single-phase electric power. You can connect up to 120 Amps on the Resibox and 230 amps on the Commbox. The relay contactors are rated 100-600V.