Vaillant VUW 246/5-3 (H-GB), Installation And Maintenance Instructions Manual

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0020244995_04 ecoTEC pro Installation and maintenance instructions
39
Note
Instead of grease, use only water or com-
mercially available soft soap to aid installa-
tion.
13. Insert the flow and return connections into the heat
exchanger as far as they will go.
14. Make sure that the brackets are seated correctly on the
flow and return connections.
15. Install the compact thermal module. (
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Page 36)
16. Fill and purge the product and, if necessary, the heating
installation. (
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Page 28)
13.6.4 Replacing the expansion vessel
1. Drain the product. (
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Page 36)
1
2
3
4
2. Undo the screwed connection (4) .
3. Remove both screws (1) on the support plate (2) .
4. Remove the support plate (2) .
5. Pull out the expansion vessel (3) towards the front.
6. Insert the new expansion vessel into the product.
7. Screw the new expansion vessel to the water connec-
tion. Use a new seal for this.
8. Attach the support plate using both screws (1) .
9. Fill and purge the product and, if necessary, the heating
installation. (
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Page 28)
13.6.5 Replacing the PCB or the display
Note
If you only replace one component, when the
product is switched on, the new component ad-
opts the parameters that were previously set from
the component that was not replaced.
1. Open the electronics box. (
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Page 24)
2. Replace the PCB or display according to the assembly
and installation instructions supplied.
3. Close the electronics box.
13.6.6 Replacing the PCB and the display
1. Open the electronics box. (
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Page 24)
2. Replace the PCB and display according to the
assembly and installation instructions supplied.
3. Close the electronics box.
4. Press the on/off button on the product. (
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Page 28)
◁
You are automatically taken to D.093 to set the
device specific number.
5. Set the correct value for the relevant product type in ac-
cordance with the table below and confirm by pressing
.
Product type number
VUW 246/5-3 (H-GB) ecoTEC pro
24 7
VUW 286/5-3 (H-GB) ecoTEC pro
28 22
VUW 286/5-3 (P-GB) ecoTEC pro
28 22
◁
The electronics are now set to the product type and
the parameters of all diagnostics codes are set to
default settings.
6. Make the system-specific settings.
13.7 Completing repair work
1. Establish the power supply.
2. Switch the product back on if this has not yet been
done. (
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Page 28)
3. Install the front casing.
4. Open all service valves and the gas stopcock.
13.8 Checking the product for leak-tightness
▶
Check that the product is leak-tight. (
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Page 31)
14 Decommissioning
14.1 Temporarily decommissioning the product
▶
Press the on/off button.
◁
The display goes out.
▶
Close the gas stopcock.
▶
On combination products and products with a connec-
ted domestic hot water cylinder, you must also close the
cold-water isolation valve.
14.2 Permanently decommissioning the product
▶
Press the on/off button.
◁
The display goes out.
▶
Disconnect the product from the power grid.
▶
Close the gas stopcock.
▶
Close the cold-water isolation valve.
▶
Drain the product. (
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Page 36)
15 Recycling and disposal
Disposing of the packaging
▶
Dispose of the packaging correctly.
▶
Observe all relevant regulations.
▶
For detailed information refer to www.vaillant.co.uk.