Pentair UltraTemp-E Serie Guide De L'installation page 16

Changing the Set Point (Temperature)
Heat Pump Timer
Relay Remote Control
In relay remote operation, the heat pump is made to start and stop via an external thermostat control. This means
the remote automation controls override the heat pump's local set point.
Serial Remote control (RS485 Cable) for IntelliPool
In serial remote operation, the heat pump is made to start and stop via a serial RS-485 communications link with an
IntelliPool controller. This means the remote automation controls override the heat pump's local set point.
Note: When connected to the RS485 communication cable, the heat pump will not respond to commands from the
control panel display buttons except On/Off.
IntelliPool software version 4.25 or higher is required for UltraTemp functionality.