EQJW146F002 EN
85
Functions of the heating circuit
The buffer tank control circuit is deactivated as described in section 6.4. When predefined
gradients of heating characteristic (CO1 > F11 - 0) are used, night mode is not possible in
the buffer tank control circuit. In contrast to an active four-point characteristic (CO1 >
F11 - 1): in this case, a four-point characteristic exists for day and night modes.
Functions
WE
Configuration
Storage tank sensor SF2
1
CO1 > F06 - 1
SLP depending on return flow temperature
0
CO1 > F22 - 1
Parameters
WE
Parameters: value range
Minimum set point to charge buffer tank
AT
PA1 > P16: OT to 90.0 °C
Stop charging of the buffer tank
AT
PA1 > P17: OT to 90.0 °C
Charging temperature boost
6.0 °C
PA1 > P18: 0.0 to 50.0 °C
Lag time of charging pump
1.0
PA1 > P19: 0.0 to 10.0
Solar circuit pump ON
10.0 °C
PA4 > P10: 1.0 to 30.0 °C
Solar circuit pump OFF
3.0 °C
PA4 > P11: 0.0 to 30.0 °C
Max. storage tank temperature
80.0 °C
PA4 > P12: 20.0 to 90.0 °C
Start temperature for boiler pump
60.0 °C
PA5 > P01: 20.0 to 90.0 °C
Boiler pump hysteresis
5.0 °C
PA5 > P02: 0.0 to 30.0 °C
6.6 Summer mode
Summer mode is activated depending on the mean daytime temperature (measured between
7.00 h and 22.00 h) during the adjusted summer time period. If the mean daytime tempera-
ture exceeds the 'Boost' on the number of successive days set in 'No. days until activation',
summer mode is activated on the following day. This means that the valves in all heating cir-
cuits are closed and the circulation pumps are switched off after t = 2 x valve transit time. If
the mean daytime temperature falls below the 'Limit' on the number of successive days set in
'No. days until deactivation', summer mode is deactivated on the following day.
Note
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