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We reserve the right to make technical changes.
83052300eUK © ait-deutschland GmbH
Above the set external temperature, the second
heat generators remain locked.
Exception:
In the event of a fault and the setting fault with a 2
hg, the second heat generators are released inde-
pendently of the set external temperature.
Tp-defr. Air. Temperature air defrost
A value is only displayed for L/W devices and if the
air defrost is switched on.
Setting for the release temperature for the air de-
frost. Below the set temperature, the air defrosting
is locked.
ATTENTION
Set air defrost only if device type is approved for air
defrost.
TVth. disinf2 TDI setpoint temperature
Setting for the setpoint temperature for the thermal
disinfection in the domestic hot water preparation.
Hysteres.SW Hysteresis of domestic hot water
Setting for the control hysteresis for the domestic
hot water preparation (negative hysteresis).
A
B
D
C
A There will be no request for domestic hot
water preparation in this temperature range
B There will be a request for domestic hot
water preparation in this temperature range
C Domestic hot water target
D negative hysteresis
Flow 2. CP SW Flow 2nd compressor
Domestic hot water
Is only displayed for devices with 2 compressors.
Setting for the ow temperature from which do-
mestic hot water is prepared with a compressor.
Optimisation of the charging time and the attainable
domestic hot water temperatures.
T-outd. max Maximum external temperature
A value is only displayed for L/W devices
Setting for the maximum external temperature from
which the heat pump is locked.
Second heat generators are released as required.
T-outd. min. Minimum external temperature
A value is only displayed for L/W devices.
Setting for the minimum external temperature
under which the heat pump is locked.
Second heat generators are released as required.
T-HS min Minimum heat source temperature
A value is only displayed for S/W- or W/W devices.
Setting for the minimum permissible temperature at
the heat source outow of the heat pump.
for S/W devices:
With AS access, a value above -9 °C can be set (nec-
essary for integration with intermediate exchangers)
for S/W devices:
for W/W devices
The setting is only available with manufacturer access.
T-HG max Maximum hot gas temperature
Setting for the maximum permissible temperature in
the cooling circle of the heat pump.
T-def.airend Temperature air defrost end
A value is only displayed for L/W devices and if the
air defrost is switched on.
Setting for the temperature at which the air defrost-
ing is terminated at the outlet of the evaporator.
page 77, „Overview: Defrost cycle, Air defrost,
Flow Max“
Lowering to Maximum lowering
Setting for the external temperature up to which a
night lowering is carried out.
If the actual external temperature falls below the set
value, the lowering temperature is ignored.
Flow max. ) Maximum ow temperature
If this temperature is exceeded in the ow, a com-
pressor of the heat pump is switched off. This
applies to all supply types!
page 77, „Overview: Defrost cycle, Air defrost,
Flow Max“
Flow max. MC1 Maximum ow temperature
following the charger mixer
Is only displayed if mixing circle 1 is set to charger
mixer. The forward ow sensor at TB1 will then be
used to limit the ow temperature following the
mixer. This means: if the TB1 exceeds the value set
here, the charger mixer will be moved in >Closed<
direction.
min. AT ow max. )
Heat source temperature-dependent adjustment of
the ow temperature.
The outside temperature, up to which the ow max.
temperature with the heat pump may be increased,
is adjusted here.
Below this outside temperature, the actual VL
maximum temperature of the heat pump will fall lin-
earally to the value “Forward ow EG”.
Flow limit of applic. )
Heat source temperature-dependent adjustment of
the ow temperature.
Here, the maximum forward ow temperature of
the heat pump is set at an outside temperature of
-20°C.
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