22 We reserve the right to make technical changes | 83055600dUK – Translation of the original instruction manual (HMD 2) | ait-deutschland GmbH
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 domestic 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
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
Setting for the minimum external temperature under which
the heat pump is locked.
Second heat generators are released as required.
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 defrosting is
terminated at the outlet of the evaporator.
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.
ow max.
Maximum ow temperature
If this temperature is exceeded in the ow, a compressor of
the heat pump is switched o. This applies to all supply types!
page 44, “Overview: Defrost cycle, Air defrost, Flow Max“
Flow max. MC1
Maximum ow temperature mixing
circuit 1
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 linearally to the value
“low limit of applic.“.
low 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.
For further details, see point “min. AT ow max.” and the
following diagrams:
VL
AT
-20°C
min. AT Flow max.
Flow max.
low limit of applic.
Hysteresis HR
setting for the control hysteresis of the
heating regulator
Set a greater hysteresis for very reactive heating systems, and
a lower hysteresis for less reactive heating systems.
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 Neutral zone
D Return setpoint temperature
K Hysteresis in Kelvin
hysteres.SW
Hysteresis of domestic hot water
Setting for the control hysteresis for the domestic hot water
preparation (negative hysteresis).
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
RT incr.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 ignored and all heat
generators switched o. Always set value higher than the
value of the hysteresis HR.
Release 2 CP
Release 2nd compresso
A value is only displayed for devices with two compressors.
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. 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 independently of the set
external temperature.
Tp-defr.Air.
Temperature air defrost
Setting for the release temperature for the air defrost. Below
the set temperature, the air defrosting is locked.
IMPORTANT
Set air defrost only if device type is approved for air de-
frost.
TVth.disinf2
TDI setpoint temperature
Setting for the setpoint temperature for the thermal
disinfection in the domestic hot water preparation.