554. Support: Balboa Optional Freeze Sensor installation.

Installation of the 22312 Balboa Optional Freeze Sensor is recommend by a licensed spa technician or a licensed contractor who are experienced with spas and hot tubs. This sensor gets plugged into J22 "Aux F" location near the Sensor A connection of the main circuit board. See wiring diagram for location. Apply thermal compound to the bottom side of the sensor (metal side), and ty-wrap the sensor with the metal side (that has the thermal compound on it) facing down onto the water line that would be the coldest in the winter time. This would be a permanent installation. Ty-wraps and thermal compounds are not included, and can be purchased at an electric supply store.