Commissioning checklist 3
0020251825_01 System installation instructions
3
Work
Comments/settings
8
Use the correct brine fluid
Monoethylene glycol, essential for fault-free operation.
9
Use the correct mixing ratio of monoethylene glycol to water
3:7, efficient operation only when the defined mixing ratio
is used
10
Use a refractometer to check the mixing ratio
Efficient operation only when the defined mixing ratio is
used
11
Choke the output of the filling pump
Reduce the penetration of air in the brine circuit.
12
Sufficiently dimension the gas-fired boiler's expansion vessel for the
heating circuit
No expansion vessel present in the heat pump.
13
Install non-return flaps
14
Connect the heat pump via a separately fused plug socket
Observe the connection conditions in accordance with
the data plate.
15
Use connection terminals when connecting multiple conductors
Prevent communication faults.
16
Install a bus coupler in the VR 32 in the gas-fired boiler
The gas-fired boiler is the second participant in the
eBUS.
17
Check all cable connections for tensile strength
18
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
Comments/settings
1
Start the installation assistant
If it is not started automatically
2
Language
Select
3
Filling mode: 3-way valve is in mid-position
Filling mode, fill the installation to at least 0.1 MPa (1.0
bar) via the return line
4
Purge program: Select circ. using +/- Heating circuit
the programme ends automatically
5
Purge program: Select circ. using +/- DHW circuit
the programme ends automatically
6
Target flow temp.
75 °C, setting for the maximum target flow temperature
in heating mode
7
DHW temperature
65 °C, setting for the maximum domestic hot water
temperature
8
Comfort mode
Off
9
Heating partial load
Auto
10
Auxiliary relay
External pump
, if present
11
Accessory relay 1
Circulation pump
12
Accessory relay 2
External pump
, if present
13
Contact details
Enter on the VRC 700
14
End the installation assistant?
Yes
15
Menu
→
Installer level
→
Test programs
→
Check programs
16
P.01 and P.02
Check the gas connection pressure in accordance with
the installation instructions
17
P.01 and P.02
Check the CO
₂
content in accordance with the installa-
tion instructions
