Appendix; A Inspection And Maintenance Work - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

Appendix

A Inspection and maintenance work
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. Each time inspection and maintenance work is carried out, carry out the required preparatory and com-
pletion work.
# Maintenance work
1 Record all of the analysis results in the Benchmark Checklist in these
instructions
2 Ask the end user whether any significant problems occur when operating
the product
3 Use the diagnostics system to check the product's fault history
4 Visually inspect whether the air/flue pipe and its opening have been in-
stalled correctly in accordance with the set-up instructions
5 Check that the unit has been installed correctly and the connections have
been secured
6 Check that the condensate pipe is in good condition, that it is leak-tight
and that the drain is correct
7 Check whether all of the externally routed condensate pipes are dimen-
sioned correctly and have been insulated sufficiently (frost protection)
8 Check whether the gas flow rate corresponds with the specifications on
the data plate and lies within the tolerances specified in these instructions
9 If the gas flow rate lies outside of the tolerances specified in these in-
structions, eliminate the fault in accordance with the regulations and the
current technology
10 Check the general condition of the product and, if required, eliminate any
faults that are found
11 Checking and, if required, adjusting the CO₂ content and the CO/CO₂
ratio (air ratio setting)
12 Logging the CO
13 Disconnect the product from the electrical installation
14 Check that the connections/electrical plug connections have been con-
nected correctly/function correctly (product must be voltage-free)
15 Check the product's recirculation at the supply air test point on the air/flue
pipe. If required, inspect the entire air/flue system and, if necessary, cor-
rect the fault
16 Removing dirt from the product and the vacuum chamber
17 Visually check the heat cell to ascertain its condition and detect any cor-
rosion, rust or damage, and carry out maintenance work, if required
18 Check that the gas stopcock and service valves function correctly
19 Check the quality of the heating water: Clarity (clouding), correct inhibitor
and pH value
20 Removing the compact thermal module
21 Check the burner for damage
22 Checking the insulating mats in the combustion area and replacing dam-
aged insulating mats
23 Cleaning the heat exchanger
24 Checking the condensate trap for dirt and cleaning it
25 Installing the compact thermal module
26 Cleaning the strainer in the cold water inlet
27 Check the impeller sensor for dirt/damage
28 If the water volume is insufficient (domestic hot water) or the outlet tem-
perature is insufficient, check the secondary heat exchanger
29 Checking the pre-charge pressure of the expansion vessel
30 Checking the pre-charge pressure in the shift-load cylinder expansion
vessel
31 Reassemble the product
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content (air ratio) and CO/CO
2
Interval
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
ratio Annually
2
Annually
Annually
Annually
Annually
Annually
Annually
Annually
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
Annually
After each time maintenance
work is carried out
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