52
Instructions on commissioning, maintenance, and troubleshooting for auroSTOR 0020111119_02
7 Commissioning
4
8
6a 6b
15
14
13
12
1
2
5
20
19
10
9
21
11
7
16
17
Fig. 7.1 Checking, flushing, and filling the solar circuit
Key
1 Combined filling and draining tap
2 6 bar expansion relief valve
4 Air
vent
5 Solar
protection vessel
6a Flow line thermometer
6b Return line thermometer
7 Pressure
gauge
8 Flow line ball valve with non-return valve
9 Filter
10 Solar fluid container
11 Combined filling and draining tap
12 Flow rate limiter
13 Solar pump
14 Return line non-return valve
15 3-way ball valve with non-return valve
16 Combined filling and draining tap
17 Return hose
19 Filling pump
21 Vaillant automatic air separator system
You must adhere to the following procedure for the
commissioning of the total system:
>
Check for leak-tightness.
>
Flush the solar circuit with solar fluid.
>
Fill the solar circuit with solar fluid.
>
Set the solar pump.
>
Set the flow rate limiter.
>
Check the controller.
>
Set the hot water thermostat mixer.
i
Only use Vaillant solar fluid for pressure tests,
flushing, and filling.
7.1 Checking
leak-tightness
For the pressure test, first fill the solar circuit with
Vaillant solar fluid (ready mixed).
A self-priming filling pump with a pressure of 2 to 3 bar
is required to fill the solar circuit.
>
Connect the pressure hose of the filling pump (
19
) to the
upper combined filling and draining tap (
1
) of the solar
circuit.
>
Connect the return hose (
17
) to the lower combined fil-
ling and draining tap (
16
) of the solar circuit.
>
Close the 3-way ball valve (
15
).
>
Open the air vent (
4
).
>
Switch the filling pump on.
The solar fluid now flows into the solar circuit.
>
Place enough solar fluid into the container (
10
) to ensure
that the filling pump cannot run dry.
>
Allow the system to pump the solar fluid (ready mixed)
out of the container (
10
) via the combined filling and
draining tap (
1
) until solar fluid runs back out of the
return hose (
17
) and into the container (
10
).
>
Close the combined filling and draining tap (
16
).
>
Let the pressure build to around 4.5 bar.
>
Close the combined filling and draining tap (
1
) and imme-
diately switch the filling pump off.
>
Carry out a visual inspection of the pipes and connec-
tions.
>
Rectify any leaks and then check again.
i
Only flush the solar circuit following
a successful pressure test.
7 Commissioning
