F Inspection And Maintenance Work - Overview - Vaillant ecoTEC sustain 24 Installation And Maintenance Instructions Manual

Inspection and maintenance work – Overview
F
The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na-
tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of
the intervals listed in the table.
No. Work
Check whether the air/flue pipe is fully leak-tight and has been secured in placed correctly. Make
1 sure that it is not damaged or blocked and that it has been installed correctly in accordance with
the relevant set-up instructions.
Check the general condition of the product. Remove any dirt from the product and the vacuum
2
chamber.
Visually inspect the general condition of the Thermoblock. In doing so, pay particular attention to
3
signs of corrosion, rust and other defects. If you find any damage, carry out maintenance work.
Check the gas flow pressure at maximum heat input. If the gas flow pressure is not within the
4
correct range, carry out maintenance work.
Check the product's CO₂ content (air ratio) and adjust this, if required. Keep a record of this
5
procedure.
Disconnect the product from the power mains. Ensure that the electricity, gas and water connec-
6
tions have been attached correctly and, if required, correct these.
Close the gas isolator cock and the service valves.
7
Drain the product on the water side (observe the pressure gauge). Check the pre-charge pres-
8 sure of the expansion vessel, and top up the vessel if necessary (approx. 0.03 MPa/0.3 bar un-
der the system filling pressure).
Remove the compact thermal module.
9
Check the insulating mats in the combustion area. If you notice any damage, replace the insulat-
10 ing mats. Replace the burner flange insulation each time it is opened and accordingly each time
maintenance is carried out.
Clean the heat exchanger.
11
Make sure that the burner is not damaged. Replace it if necessary.
12
Check the condensate trap in the product, clean and fill this, if required.
13
Install the compact thermal module. Caution: Replace the seals.
14
If the water volume is insufficient or the output temperature is not reached, replace the second-
15
ary heat exchanger if necessary.
Clean the strainer in the cold water inlet. Replace the strainer if impurities can no longer be
removed or if the strainer is damaged. In this case, also check the impeller sensor for dirt and
16
damage, clean the sensor (do not use compressed air for this) and replace the sensor if it is
damaged.
Open the gas isolator cock, reconnect the product to the mains and switch it on.
17
Open the service valves, fill the product or heating installation to 0.1-0.2 MPa/1.0-2.0 bar (de-
18
pending on the static height of the heating installation) and start the purge programme P.00.
Perform a test operation of the product and heating installation, including hot water generation,
19
and purge the system once more if necessary.
20 Carry out a visual inspection on the ignition and combustion behaviour.
21 Check the CO₂ content (the air ratio) of the product again.
Check that no gas, flue gas, hot water or condensate is leaking from the product. Restore leak-
22
tightness if necessary.
23 Record the inspection/maintenance work carried out.
0020253094_01 ecoTEC sustain Installation and maintenance instructions
Appendix
Mainten-
ance
Inspection
(must be
(annual) carried out
at regular
intervals)
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