Installation level
Input of the basic setting
30
23 = Solar integration (to MF4 because of PT1000 sen-
sor)
T-SOL PANEL [T-MF4] = Temperature of the solar collec-
tor
T-DHW L [F12]= Temperature of hot water storage tank in
infeed area
ON: T-SOL PANEL > [T-DHW L + MF4 HYST + 5 K]
OFF: T-SOL PANEL < [T-DHW L + MF4 HYST]
The pump is switched on when the temperature of the so-
lar collector exceeds the temperature of the storage tank in
the infeed area (T-DHW L) by the Hysteresis (MF4 HYST +
5 K). Switching off occurs when the temperature drops 5 K
below the switch-on temperature.
Safety/system protection:
OFF: T-DHW B > T-MF4 SETP
ON: T-DHW B < [T-MF4 SETP - 5 K]
Switching off occurs when storage tank temperature ex-
ceeds the set limit temperature (T-MF4 SETP). The pump
is enabled again when the storage tank temperature drops
below the limit temperature by 5 K.
24 = Return flow temperature increase HS1
T-RETURN 1 = Return flow temperature from the installa-
tion [= T-MF1 or 1 - 4].
ON: T-RETURN 1 < T-MF1 SETP
OFF: T-RETURN 1 > [T-MF1 SETP +MF 1 HYST]
The return flow temperature increase pump is switched on
if the return flow temperature drops below the temperature
setting limit (T-MF1 SETP). It is switched off again when
the return flow temperature exceeds the temperature set-
ting limit by the Hysteresis (MF 1 HYST).
25 = Return flow temperature increase HS2
T-RETURN 2 = Return temperature of system
ON: T-RETURN 2 < T-MF1 SETP
OFF: T-RETURN 2 > [T-MF1 SETP +MF 1 HYST]
The return flow temperature increase pump is switched on
if the return flow temperature drops below the temperature
setting limit (T-MF1 SETP). It is switched off again when
the return flow temperature exceeds the temperature set-
ting limit by the Hysteresis (MF 1 HYST).
26 = Return flow temperature increase HS via buffer
storage
ON:
T-BUFFER B [F1] > T-MF1 +MF 1 HYST + 5 K
OFF: T-BUFFER B < T-MF1+MF 1 HYST
The valve to the return flow temperature increase via the
buffer storage is opened if the temperature buffer storage
low [T-BUFFER B] exceeds the return flow temperature of
the installation [sensor 1 or 1 - 4] by the Hysteresis (MF 1
HYST + 5 K). It is switched off again when the temperature
buffer storage low drops below the return flow tempera-
ture.
