Adapting the appliance to the heating system
72
Installation instructions geoTHERM 0020051574_04
9
Last day before mains off
Start after mains on
1 - 15
16
17 - 23
24 - 28
29
1
16
17
24
29
9.2 Floor drying procedure after mains supply Off/On
If you do not wish to complete the floor drying using the
specified temperatures or times, you can specify other flow
target temperatures by means of fixed value control
(
¬
Ch.
9.3.3
)
.
In the process, check the valid compressor
hysteresis (settable via vrDIALOG,
(
¬
Ch.
9.8
).
Legionella protection
The purpose of the “Legionella protect.” function is to kill
off germs in the DHW tank and in the pipes.
Once every week, a connected hot water cylinder is brought
to a temperature of approx. 75 °C.
>
In the code level, enable the “Legionella protect”. func-
tion in accordance with local regulations and in relation
to the size of the cylinder, as required. Enable this func-
tion for cylinders with a drinking water volume of
400 litres or more. Set a start time and a start day
(weekday) at/on which you want the heating to take
place (
Menu C9
) (
¬
Tab.
9.6
).
9.3.3
Additional functions via vrDIALOG
Remote parameter setting/alerting/diagnostics
It is possible to diagnose and set the heat pump via vrDIA-
LOG 810/2 locally or via vrnetDIALOG 840/2 or 860/2 by
remote maintenance. More detailed information can be
found in their
¬ manuals
.
vrDIALOG 810/2 (eBUS) makes it possible to optimise boil-
ers and control systems via computer-assisted graphic visu-
alisation and configuration and thereby make use of energy
saving potential. Both options enable you at any time to
gain a visual impression of, and influence the processes
which take place in the control system at any time. The pro-
grammes enable you to record and graphically prepare sys-
tem data, to load device configurations and change and
save them online or to save information in the form of
reports.
Using vrDIALOG 810/2, you can make all the settings for the
heat pump as well as other settings for optimisation.
Fixed value control
You can use this function to set a fixed flow temperature
via vrDIALOG independently of the control which is influ-
enced by atmospheric conditions.
9.4 Control
principle
9.4.1
Possible heater system circuits
The following heater system circuits can be connected to
the heat pump energy balance controller which is influ-
enced by atmospheric conditions:
– a heater circuit,
– an indirectly heated domestic hot water cylinder,
– a hot water circulation pump,
– a buffer circuit.
To extend the system, a buffer circuit can be used to con-
nect as many as six additional VR 60 mixed circuit modules
(accessories), each with two mixed circuits.
The controller on the operating panel of the heat pump is
used to programme the mixed circuits.
For more convenient operation, you can connect the remote
control units VR 90 for the first six heating circuits
(
¬
Ch.
7.7.1
).
