Thermor AEROMAX Manual De Instrucciones página 210

Each valve position change requires that you wait a few seconds to be
able to view the effect on the remote control display.
Inlet temperature INLET
-To reduce the difference, gradually reduce the opening of valve V1.
-To increase this difference, gradually open valve V1.
Please note: to ensure the best possible performance, the target temperature
difference between the inlet and outlet is 2°C.
must not exceed outlet temperature
33
OUTLET