Differential temperature constant (∆T-const)

The pump controls to a set differential temperature ∆T_setpoint (e.g. difference from feed and return temperature).

Actual temperature determination:

• Through the internal temperature sensor (not available with “-R7” version) and an external temperature sensor.
• Two external temperature sensors.

NOTICE

The control function ∆T-const. can be used with an external sensor (e.g. PT1000) for “-R7” version. The external sensor is connected to the AI1 or AI2 analogue inputs.

The “internal sensor” as sensor source T1 or T2 is not available with the “-R7” version.