Settings
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16.5 External control
When an external input is connected, the control unit
performs functions which are set to Yes or is separated
from 0 (Room temperature). When the external input is
no longer connected, the control unit returns to normal
mode. Only installed functions are displayed.
This is where the functions for the external inputs 1 and
2 per heat pump and the external inputs for circuits 2, 3,
etc. are located.
> Heat pump x
>> External input 1, 2
>>> Invert input
B Select Yes if the input signal is to be reversed (i.e.
activated with open contact).
>>> Block compressor x
>>> Block additional heat
>>> Block heating at tripped underfloor temperature
limiter
>>> Block heating
>>> Room temperature
B Set the room temperature that should apply in the
event of enabled external control.
B Value > 0 °C enables the function.
>> Block hot water production
>> Start collector circuit pump
>> Alarm at low pressure in collector circuit
>> Alarm groundwater circuit
Factory setting No
Alternative No/Yes
Tab. 115 Invert input
Factory setting No
Alternative No/Yes
Tab. 116 Blocking
Factory setting No
Alternative No/Yes
Tab. 117 Blocking
Factory setting No
Alternative No/Yes
Tab. 118 Blocking
This function requires the installation of a
safety thermostat to the floor heating circuit
and its connection to the external input.
Factory setting No
Alternative No/Yes
Tab. 119 Blocking
Factory setting No (0.0 °C)
Lowest value 10.0 °C
Highest value 35.0 °C
Tab. 120 Room temperature
Factory setting No
Alternative No/Yes
Tab. 121 Blocking
Factory setting No
Alternative No/Yes
Tab. 122 Start collector circuit pump
Factory setting No
Alternative No/Yes
Tab. 123 Alarm at low pressure in collector circuit
This function requires the installation of a
pressure switch in the collector circuit and
its connection to the external input. In the
event of incorrect pressure in the circuit, the
external input closes, triggering a category A
alarm ( Chapter 17.7).
Factory setting No
Alternative No/Yes
Tab. 124 Alarm groundwater circuit
This function requires the installation of a
pressure or a flow switch in the
groundwater circuit and its connection to
the external input. In the event of incorrect
pressure/flow in the circuit, the external
input closes, triggering a category A alarm
( Chapter 17.7).
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