Taco PC605-1 Priority Protection Plug In Powerport Card

The PC605 Priority Protection Plug In Card is a solid state control that helps prevent freezeups in the event of a priority zone failure. If the priority zone calls for heat continuously for more then one hour, power is returned to the space heating (non priority) zones, allowing all zones to function independently. Once the priority zone is satisfied, the PC605's auto reset is activated and the priority zone is again allowed to have priority for up to one hour the next time it calls. The one hour time frame is not adjustable.The red LED light is energized only when the Priority Protection Card is operating in priority override mode.