A Set DHW temperature
B Heat pump switching hysteresis
("Hysteresis")
C Instantaneous heating water hea-
ter switching hysteresis ("Hys-
teresis; DHW E heating")
D Actual DHW temperature at the
upper cylinder temperature sen-
sor
E Heat pump control state
F Control state, instantaneous heat-
ing water heater
G OFF
H ON
Note
The value selected for "Hysteresis"
should be higher than the expected
temperature drop due to heat losses
in a single night (approx. 5 K).
A lower value for "Hysteresis DHW E
heating" increases the proportion of
electrical DHW heating, i.e. the sys-
tem efficiency drops.
Access
&
"Device settings"
&
"Programming"
&
"DHW"
&
"Hysteresis"
&
or
&
"Hysteresis; DHW E heating"
&
(5/%)
Standard setting Setting range
"Hysteresis" 7.0 K 1.0 to 10.0 K
"Hysteresis; DHW E
heating"
10.0 K 2.0 to 30.0 K
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