Hot Spring Spas 1500w circulation heater replacement kit for replacement of current models 2003+ with pressure switch cord.
Has 2 x temperature sensor locations - hi limit and control. 3/4" barbs for tubing connection
This heater kit is for replacement of heater models with a second small wire with internal pressure switch, and includes the following: Inline flow switch and connection tube / clamps
These extra parts are not needed for Hot Spring Spas with heaters that have no separate pressure switch wire, however if fitted to a IQ2020 controller, can be used for additional heater protection by connecting to P34 terminals.