OPERATING AND INSTALLATION MANUAL HEAT PUMP COMBI UNIT PKOM4 PAGE 38
USER
GENERALSPECIALIST PERSONNEL
14.6.3 Additional function via E1 contact Depending on the device configuration that
is carried out by the specialist/installer dur-
ing commissioning, the following functions
can be assigned to digital input E1:
External o
This configuration makes it possible to
switch o the heat pump combi unit by
opening an NC contact, e.g. via a central fire
alarm system, pressure box, etc.
ECO mode
Eco mode allows for a higher inherent
power consumption of the photovoltaic sys-
tem. The operating mode is activated via
a digital input signal. This signal is pro-
vided either directly by the inverter or by an
energy management system.
The setpoint for hot water is increased to
a higher level (default setting 75 °C). This
means that the excess current is buered
as heat in the hot water tank.
The heat pump heats the hot water up to
max. 55 °C, the remaining heating power is
supplied by the electric heating element.
A further option is provided by the possibil-
ity of only enabling active cooling in the Eco
mode. This means that cooling by means of
the heat pump is only carried out if there is
excess energy.
Shock ventilation
This function requires the use of a pushbut-
ton, giving the E1 contact a pulse for start-
ing shock ventilation. For the time defined
(default setting 60 min.) the heat pump
combi unit runs on ventilation level 4.
Illustration: Electrical connection of main board
F2
T2AH230V
T10AH230V
T2AH230V
T8AH230V
T500mAH230V
T500mAH230V
M3
M2
M1
M4
S2
E1/T40
H1
K6
K5
K4
3 2 1
3 2 1
3 2 1
3 2 1
T9
3 2 1
3 2 1
4 3 2 1
4 3 2 1
4 3 2 1
4 3 2 1
4 34 3
E1
Hilfseingang
Auxiliary input
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