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Work
6
Insulate the brine pipes in the house so that they are vapour-diffu-
sion-tight
7
Use cold pipe clips to install the brine pipes in the house
8
Use the correct brine fluid
9
Use the correct mixing ratio of monoethylene glycol to water
10
Use a refractometer to check the mixing ratio
11
Choke the output of the filling pump
12
Sufficiently dimension the gas-fired boiler's expansion vessel for the
heating circuit
13
Connect the heat pump via a separately fused plug socket
14
Use connection terminals when connecting multiple conductors
15
Install a bus coupler in the VR 32 in the gas-fired boiler
17
Check all cable connections for tensile strength
16
Visually check all cable connections for damage
3
Commissioning checklist
3.1
VC 146/5-5, VC 206/5-5, VC 266/5-5
Work
1
Start the installation assistant
Language
2
3
Filling mode: 3-way valve is in mid-position
4
Purge program: Select circ. using +/- Heating circuit
5
Purge program: Select circ. using +/- DHW circuit
6
Target flow temp.
7
DHW temperature
8
Comfort mode
9
Heating partial load
10
Auxiliary relay
11
Accessory relay 1
12
Accessory relay 2
13
Contact details
14
End the installation assistant?
Menu → Installer level → Test programs → Check programs
15
16
P.01 and P.02
17
P.01 and P.02
0020251826_01 System installation instructions
Commissioning checklist 3
Comments/settings
Prevent condensation.
Prevent thermal bridges.
Monoethylene glycol, essential for fault-free operation.
3:7, efficient operation only when the defined mixing ratio
is used
Efficient operation only when the defined mixing ratio is
used
Reduce the penetration of air in the brine circuit.
No expansion vessel present in the heat pump.
Observe the connection conditions in accordance with
the data plate.
Prevent communication faults.
The gas-fired boiler is the second participant in the
eBUS.
Comments/settings
If it is not started automatically
Select
Filling mode, fill the installation to at least 0.1 MPa (1.0
bar) via the return line
the programme ends automatically
the programme ends automatically
75 °C, setting for the maximum target flow temperature
in heating mode
65 °C, setting for the maximum domestic hot water
temperature
Off
Auto
External pump, if present
Circulation pump
External pump, if present
Enter on the VRC 700
Yes
Check the gas connection pressure in accordance with
the installation instructions
Check the CO₂ content in accordance with the installa-
tion instructions
3
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