Commissioning checklist 3
0020251823_01 System installation instructions 3
Work Comments/settings
6 Check the brine circuit for leak-tightness
7 Insulate the brine pipes in the house so that they are vapour-diffu-
sion-tight
Prevent condensation.
8 Use cold pipe clips to install the brine pipes in the house Prevent thermal bridges.
9 Use the correct brine fluid Monoethylene glycol, essential for fault-free operation.
10 Use the correct mixing ratio of monoethylene glycol to water 3:7, efficient operation only when the defined mixing ratio
is used
11 Use a refractometer to check the mixing ratio Efficient operation only when the defined mixing ratio is
used
12 Choke the output of the filling pump Reduce the penetration of air in the brine circuit.
13 Sufficiently dimension the VWZ MEH 60's expansion vessel for the
heating circuit
No expansion vessel present in the heat pump.
14 Connect the heat pump via a separately fused plug socket Observe the connection conditions in accordance with
the data plate.
15 Connect the back-up heater from the VWZ MEH 60 via a 400 V con-
nection
Observe the connection conditions in accordance with
the data plate.
16 Use connection terminals when connecting multiple conductors Prevent communication faults.
17 Check all cable connections for tensile strength
18 Visually check all cable connections for damage
3 Commissioning checklist
3.1 VWZ AI
Work Comments/settings
1 Start the installation assistant If it is not started automatically
2
Language Select
3 Check program: Purging of building circuit active Starts automatically, end after approx. 30 minutes
4 Contact details Enter on the VRC 700
5 End the installation assistant? Yes
6 Menu → Installer level → Test menu → Sensor/actuator test
7 Check T.1.63 SP1 temperature Actual cylinder temperature
3.2 VWS 36/4.1 230V
Work Comments/settings
8 Start the installation assistant OK
9 Language Select
10 Freeze protection −10 °C
11 Purge environment and building circuit No
12 Purge building circuit No
13 Check program: Purge environment circuit Yes, test active, end after approx. 30 minutes
14 Contact details Enter on the VRC 700
15 End the installation assistant? Yes
16 Menu → Installer level → Test menu → Sensor/actuator test
17 T.82 Building circuit pressure Check, at least 1500-2000 mbar
18 T.101 Environment circuit pressure Check, at least 1500-2000 mbar
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