Bosch HP270-2 Technical Manual page 33

If "POr" ON, the appliance switch On as soon as energy is generated by PV system.
Example.

When in Man mode, HP turn ON to maximize use of PV.

Even in Auto mode (P1 / P2 / P3) and during a standby period, the HP turn ON to maximize use of PV.
The defined programming doesn't have priority over the PV.
If "POr" OFF, even if we have energy from PV system, the HP only switch On at the defined times.
Example:

When HP in Man mode, HP turn ON to maximize use of PV.

In Auto mode (P1 / P2 / P3) and during standby period, the HP keeps OFF even with PV energy
available. The defined programming has priority over PV.
Example 1 – End user wants maximum profit from PV system.
 When SuEL= "On" the HP will only start when T top < T min and PV production is detected and confirmed
during 10 min.
 If the HP reach the normal set point, SuEL="On" and the defined Tma > Set point, the appliance is kept
ON (while the PV signal is active), however and If the PV signal is OFF more than 10 minutes the HP is
switched Off.
 The HP will turn ON if:
 PV signal active more than 10 min, T top < Tma – 3ºC
 T top < T min
 The HP will turn OFF if:
if PV ready (active more than 10min), HP off at PV Set point

 if PV off (inactive more than 10min), HP off at Set point
Example 2 – End user wants profit from PV system and faster recovery and availability of hot water.
 When SuEL= "Off" the HP ignore the PV and will only start when T top < T set – 3ºC and PV production is
detected and confirmed during 10 min.
Page 33 from 56 6-720-821-364 SM HP270 – 250 - 200 2016/12 en