Appendix
42
Installation and maintenance instructions ecoTEC pure 0020258016_01
F
Inspection and maintenance work
–
Overview
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
Inspection
(annual)
Mainten-
ance
(at least
every
2 years)
1
Check the air/flue pipe for leak-tightness and to ensure that it is fastened correctly. Make sure
that it is not blocked or damaged and has been installed in accordance with the relevant Installa-
tion Manual.
X
X
2
Check the general condition of the product. Remove dirt from the product and from the vacuum
chamber.
X
X
3
Visually inspect the general condition of the compact thermal module. In doing so, pay particular
attention to signs of corrosion, rust and other defects. If you notice any damage, carry out main-
tenance work.
X
X
4
Check the gas connection pressure at maximum heat input. If the gas connection pressure is not
within the correct range, carry out maintenance work.
X
X
5
Check the CO
₂
content (the air ratio) of the product and, if necessary, adjust it. Keep a record of
this.
X
X
6
Disconnect the product from the power mains. Check that the electrical plug connections and
other connections are seated correctly and correct these if necessary.
X
X
7
Close the gas isolator cock and the service valves.
X
8
Drain the product on the water side. Check the pre-charge pressure of the expansion vessel,
and top up the vessel if necessary (approx. 0.03 MPa/0.3 bar under the system filling pressure).
X
9
Remove the compact thermal module.
X
10
Check the insulating mats in the combustion area. If you notice any damage, replace the insulat-
ing mats. Replace the burner flange insulation each time it is opened and accordingly each time
maintenance is carried out.
X
11
Clean the heat exchanger.
X
12
Check the burner for damage and replace it if necessary.
X
13
Check the condensate siphon in the product, clean and fill if necessary.
X
X
14
Install the compact thermal module. Caution: Replace the seals.
X
15
Products with integrated hot water generation only: If the volume of water is insufficient or the
outlet temperature is not reached, replace the secondary heat exchanger if necessary.
X
16
Products with integrated hot water generation only: Clean the strainer in the cold water inlet.
Replace the filter if impurities can no longer be removed or if the filter is damaged. In this case,
also check the impeller sensor for dirt and damage, clean the sensor (do not use compressed air
for this) and replace the sensor if it is damaged.
X
17
Open the gas isolator cock, reconnect the product to the power mains and switch the product on.
X
X
18
Open the service valves, fill the product or heating installation to 0.1-0.2 MPa/1.0-2.0 bar (de-
pending on the static height of the heating installation) and start the purge programme P.00.
X
19
Perform a test operation of the product and heating installation, including hot water generation,
and purge the system once more if necessary.
X
X
20
Visually inspect the ignition and burner behaviour.
X
X
21
Check the CO
₂
content (the air ratio) of the product again.
X
22
Check that no gas, flue gas, hot water or condensate is leaking from the product. Restore leak-
tightness if necessary.
X
X
23
Record the inspection/maintenance work carried out.
X
X
