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83052300eUK © ait-deutschland GmbH
A
B
2 K
2 K
D
C
E
C
A There will be no request for heating in this
temperature range
B There will be a request for heating in this
temperature range
C Hysteresis
D Neutral zone
E Return setpoint temperature
Hysteresis of output-controlled heat pump
This “Hysteresis HC” function is not available for output
controlled heat pumps. Here the return setpoint is con-
trolled by the output control of the compressor:
a a d c b
+4K
RS
RS Return setpoint
a Continuous operation of the heat pump with
individual heating output
b Switch off as soon as the setpoint is exceeded
by 4 K
c Switch on as soon as the temperature falls
below the return setpoint
d Activating the additional heat generator after
enable time, if the temperature is permanently
below the return setpoint and the compressor
operates with maximum output; switch
back to pure heat pump mode when return
setpoint is reached
RTincr.e max Return increase maximum
Setting for the maximum permissible overshoots of
the return temperature. If the return temperature
is overshot, internal minimum running times are ig-
nored and all heat generators switched off. Always
set value higher than the value of the hysteresis HC.
Release 2 CP Release 2nd compressor
A value is only displayed for devices with two com-
pressors.
Setting of the minimum external temperature from
which the second compressor can be released in
heating mode. Above the set external temperature,
the second compressor remains locked in heating
mode.
Release 2hg Release second heat generator
Setting for the external temperature from which the
second heat generator can be released if required.
determInIng temperatures
In the menu “Service Settings”, select and activate the
menu eld “Temperatures”…
Der Bildschirm wechselt in das Menü „Service Einstel-
lungen Temperaturen“…
Limit Return Return limit
Setting the maximum return setpoint temperatures
in heating mode.
X External temperature
Y Return temperature
A Heating curve end point
B Return limit
(in the example shown: 40°C)
Hysteres HC Hysteresis of heating control
setting for the control hysteresis of the heating
regulator
Set a greater hysteresis for very reactive heat-
ing systems, and a lower hysteresis for less reactive
heating systems.
Example: Hysteresis heating circle return = 2K
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