The wiring of the controller determines
the operating mode.
Please take care that the inverter poten-
tial free exit is equipped with gold plated
contacts because of the low intensity
current. The risk of not connecting the
inverter to potential free gold contacts can
over time create corrosions on the con-
tacts in the controller unit or relay without
potential free gold contacts and loose
complete contact to the inverter. This can
cause warranty exclusion.
The use of the solar cell function should
only be activated when solar panels are
available.
USE OF SOLAR CELL FUNCTION
You can operate your DHW HP environmentally friendly and
economically with energy generated by your photovoltaic
solar cell installation. This operation mode uses an increased
setpoint temperature, which can be individually selected and
determines the additional energy storage capacity. In order to
use this kind of operating mode, you have to wire the solar cell
inverter exit to the DHW HP controller terminal block and to
select in the “
SolCel
” menu the desired operating mode “
HP
only
”, “
EL only
” or “
HP + EL
”.
S
ee page 19 - User interface.
WIRING OF A SOLAR CELL INSTALLATION
The potential free contact of the inverter has to be wired to
DHW HP controller. The selected connectors of the terminal
block determine the operating mode possible, when the
inverter contact is closed. The power level of the inverter exit
can be adjusted. Please do select an appropriate power level
in order to ensure a smooth operating (consider the
instructions of the inverter producer).
See
“wiring diagram”, page 18 - Electrical installation”.
WIRING RECOMMENDATIONS
SINGLE INVERTER OPERATION:
Connect the inverter exit to the terminal block CN6 connectors
5 –6 (T3). Bridge terminal block CN6 connectors 5 –6 to
terminal block CN5 connectors 3-4 (T4).
TWO INVERTER OPERATIONS:
Connect the first inverter to terminal block CN6 connectors 5
–6 (T3) for HP operation.
Connect the 2nd inverter to terminal block CN5 connectors 3-4
(T4) for supplementary electrical (EL) operation.
The desired operation mode “
only HP
”, “
only EL
” or “
HP +
EL
” can be selected via the parameter value of the “
SolCel
”
parameter.
You operate your DHW HP with self-generated energy, when
the inverter contact is closed and the „
SolCel
” function is
activated. The display indicates the actual preselected opera-
tion mode “
only HP
”, “
only EL
” or “
HP + EL
”. If the inverter
contact re-opens (not enough energy available) the operation
mode and the display will be reset to normal operating mode.
EXTERNAL CONTROLLED DHW PRODUCTION
If the solar function is deactivated, it will change to normal
operation mode. with the settings of the normal setpoint.
The heat pump operates with a hysteresis of +1 -3°C around
the setpoint. The supplementary heating operates with a
hysteresis of +-1°C.
The setpoint for “
only HP
” can be adjusted in the menu “
SC-HP
” in between 5°C and
Tmax
.
Factory setting is 52°C.
The setpoint for “
only EL
” or “
HP + EL
” can be adjusted in the
menu “
SC-EL
” in between 5°C and
Tmax
.
Factory setting is 53°C.
ENGLISH
34
