Vaillant geoTHERM VWS Series, Руководство по установке

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Installation instructions geoTHERM VWS/VWW 0020057444_01
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When the function is started, the current time of the
start is saved. The day is changed exactly at this time.
After network-off/-on, the floor-drying begins as follows:
Last day before mains off Start after mains on
1 - 15
16
17 - 23
24 - 28
29
1
16
17
24
29
Table 8.2 Progress of the screed floor drying following mains
off/on
If you do not wish to carry out the drying with the speci-
fied temperatures and/or times, you can specify varia-
ble flow temperature setpoints by means of fixed value
controlling (see following section). When doing this, take
note of the applicable compressor hysteresis (settable
via vrDIALOG, see Chap. 8.10).
Legionella protect
The purpose of the "Legionella protect" function is to
kill off germs in the DHW tank and in the pipes.
Once a week, the domestic hot water cylinder is raised
to a temperature of approx. 70 °C.
The expert technician activates the "Legionella protect"
function in the Code level and there can set a starting
time and a starting day (weekday) on which the heating
is to take place (see Table 8.4, Menu C9).
Remote parameter setting/alerting/diagnostics
It is possible to diagnose and adjust the heat pump by
remote commands via vrDIALOG 810/2 or vrnetDIALOG
840/2 or 860/2. You will find more detailed information
on this in the respective manuals.
8.3.3 Auxiliary functions via vrDIALOG:
Using its computer-supported graphics visualisation and
configuration, vrDIALOG 810/2 (eBUS) enables you to
optimise heating appliances and control systems and
thus make use of their energy saving potential. Both of
them enable you to create a visual impression of the
processes in your control system and influence them at
any time. The programmes enable you to record and
graphically prepare system data, to load device configu-
rations and change and save them online and to save in-
formation 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.
See Chap. 8.10.
Acceleration mode
This operating mode simplifies the diagnosis of heat
pump functions by speeding up the energy balancing in
hydraulic plan 1 or 3 by a factor of 60. It is used as a
test function.
See Chap. 8.10.
Fixed value controlling
Using this function you can set, via vrDIALOG, a fixed
flow temperature independently of the weather-control-
led control system. See Chap. 8.10.
8.4 Description of the controller
8.4.1 Possible system circuits
The controller can control the following system circuits:
– one heating circuit,
– one indirectly heated hot water cylinder,
– one hot water circulation pump,
– one buffer circuit.
To expand the system, you can, with the aid of a buffer
circuit, connect up to six additional VR 60 mixer circuit
modules (accessories), each with two mixer circuits.
The mixer circuits are programmed via the controller in
the heat pump operating console.
For convenient operation, you can connect the VR 90
remote control unit for the first eight heating circuits
(see Chap. 4.13).
8.4.2 Energy balance control
Energy balance control is applicable only to hydraulic
systems without buffer cylinders (e.g. Hydraulic Plans 1
and 3).
For economical and fault-free operation of a heat pump,
it is important to regiment the starting of the compres-
sor. The start-up of the compressor is the point at which
the highest loading occurs. Using the energy balance
controller it is possible to minimise the number of heat
pump start-ups without having to forgo the convenience
of a comfortable room environment.
As with other weather-controlled heating controllers,
the controller first measures the outside temperature
and then determines a flow temperature setpoint by
means of a heating curve. The energy balance calcula-
tion is made on the basis of this flow temperature set-
point and the current temperature in the heating circuit
- the difference per minute is measured and totalised:
1 degree minute [°min] = 1 K temperature difference in
the course of 1 minute
The heat pump starts up at a defined heat deficit (se-
lectable on the controller, see Menu C4) and only
switches off again when the supplied heat is equal to
the heat deficit.
The larger the preset negative numerical value is, the
longer the periods for which the compressor is kept run-
ning or at standstill.
8 Controller