Setting The Immersion Heater Thermostat; Cold Water Inlet Pressure; Setting The Thermostatic Mixer; Filling And Purging The Product - Vaillant auroSTOR VIH S GB 300/3 BES Installation And Maintenance Instructions Manual

6.2

Setting the immersion heater thermostat

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The hot water temperature is controlled via the immersion
heater thermostat (1).
Conditions: Without a multi-functional module or controller
▶
Set the hot water temperature as you require.
Conditions: With multi-functional module or controller
▶
Set the immersion heater thermostat (1) to its maximum.
The temperature of the immersion heater is regulated via
the temperature sensor that is installed on the carrier in the
electronics box.
6.3

Cold water inlet pressure

The product's efficiency depends on the cold water inlet
pressure.
To achieve optimum efficiency, we recommend a pressure of
at least 2 bar.
6.4

Setting the thermostatic mixer

▶
During initial start-up, set the maximum value.
6.5

Filling and purging the product

Note
It is not permitted to use valves or expansion relief
valves for the purging.
1. Check whether the drain valve is closed.
2. Open the hot water draw-off valves.
3. Open the water supply valve.
4. Let the water flow in order to remove any air bubbles.
5. Close the hot water draw-off valves.
6. Check whether there are any leaks. Check the immer-
sion heater in particular.
7. Open the highest hot water supply valve, and then the
lowest hot water supply valve, and let the water flow.
– Water running time: ≥ 5 min
8. Close all of the draw-off valves.
0020221298_02 auroSTOR Installation and maintenance instructions

Handing the product over to the operator 7

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6.6

Filling and purging the heating circuit

Note
The heating circuit can be filled using a filling
device or a separate filling cock, which is installed
at a location that is easily accessible.
The separate filling cock must be removed after
filling.
If a filling device is used, close the filling valve and
remove the filling device.
If you are not permitted to use a separate filling
cock due to legal provisions, use a pump.
1. Move the lever on the 2-way motorised valve to MAN
OPEN and hold it in this position.
2. Flush out the heating circuit and then fill and purge it.
Consult the installation instructions for the heat gener-
ator.
3. Move the lever to AUTO.
4. Remove the cover for the electrics.
5. Set the product's thermostat and the immersion heater's
thermostat.
– Setting the thermostats: 60 ℃
6. Start up the heat generator.
7. Drain the heating circuit as soon as the operating
temperature has been reached in order to remove any
residue from the heating installation.
8. Fill and purge the heating circuit. Consult the installation
instructions for the heat generator.
6.7

Filling and purging the solar circuit

▶
Consult the solar installation instructions.
7 Handing the product over to the
operator
▶
Once the installation is complete, show the user the loca-
tion and function of the safety devices.
▶
Inform the operator how to handle the product.
▶
In particular, draw attention to the safety information
which the operator must follow.
▶
Inform the operator of the necessity to have the product
maintained according to the specified intervals.
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