Inspection and maintenance
48
ecoTEC plus installation and maintenance instructions 0020134823_01
13
13.2
Inspection and maintenance work
The following table shows the inspection and maintenance
work that must be carried out at specific intervals.
No. Work
Inspection
(must be
performed
every year)
Service
(regularly, at
least every
2 years)
1
Isolate the boiler from the power mains. Check that the plug connections and other connections are
seated correctly and correct these if necessary.
X
X
2
Close the gas isolator cock and the service valves.
X
3
Check the flue pipe for leak-tightness and correct seating. Make sure that it is not blocked or dam-
aged and has been installed in accordance with the relevant Installation Manual.
X
X
4
Check the general condition of the boiler. Remove general dirt from the boiler and from the vacuum
chamber.
X
X
5
Visually inspect the general condition of the entire heating cell and specifically check for signs of cor-
rosion, soot or other damage. If you notice any damage, carry out maintenance work.
X
X
6
Remove the gas-air mixture unit (burner door with fan and gas valve) (
¬ section 13.5.1
).
X
7
Check all seals in the combustion area. If you see any damage, replace the seals. Replace the burner
door seal every time you open the burner door.
X
8
Clean the heat exchanger by flushing it with a water hose from above (
¬section
13.5.2
).
X
9
Check the burner for dirt and clean if necessary.
X
10
Check the condensate siphon in the boiler, clean and top up if necessary.
X
X
11
Check, and if necessary correct, the charge pressure of the expansion vessel.
X
X
12
Reinstall all of the previously removed components, up to and including the gas-air mixture unit.
X
13
Reinstall the gas-air mixture unit.
Caution: Replace the seals.
X
14
Replace the ignition and monitoring electrode and the associated seals.
X
15
Motorised flue non-return flaps for cascade operation: Check that the flue non-return flap functions
faultlessly.
If required, clean the casing from inside and outside, as well as the shut-off disc and the shaft.
X
16
Open the gas isolator cock, reconnect the boiler to the power mains and switch the boiler on.
X
X
17
Open the service valves, fill the boiler/heating installation to 0.1 - 0.2 MPa (1.0 - 2.0 bar) (depending on
the static height of the heating installation), start purging programme P.0.
X
18
Check the gas connection pressure (gas flow pressure) (
¬section 9.6.3
) at maximum output.
If the gas connection pressure (gas flow pressure) is not within the correct range, carry out mainte-
nance.
X
X
19
Check the CO
2
content of the boiler and, if necessary, adjust it (
¬section
13.1.3
). Keep a record of this.
X
X
20
Perform a test operation of the boiler and heating installation and purge the system if necessary.
X
X
21
Visually inspect the ignition and burner performance.
X
X
22
Check the CO
2
content (air ratio) of the product again.
X
X
23
Check the boiler for gas, flue gas, hot water and condensate leaks and repair if necessary.
X
X
24
Close the front casing.
X
X
25
Record the inspection/maintenance work carried out.
X
X
26
Check the quality of the heating water (hardness level) and log the values in a system book.
If required, use water treatment to correct the water hardness.
X
X
13.2
Inspection and maintenance steps
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