Vaillant ecoFIT pure Series Installation And Maintenance Instructions Manual page 38

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.
Note
For those appliances which are not part of an annual service agreement/policy, maintenance must be carried out
at least every 5 years.
# 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 all of the connections for tightness
7 Check that the condensate pipe is in good condition, that it is leak-tight
and that the drain is correct
8 Check whether all of the externally routed condensate pipes are dimen-
sioned correctly and have been insulated sufficiently (frost protection)
9 Check whether the gas flow rate corresponds with the specifications on
the data plate and lies within the tolerances specified in these instructions
10 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
11 Check the general condition of the product and, if required, eliminate any
faults that are found
12 Carry out the combustion analysis: Measure the CO content, CO₂ content
and the CO/CO₂ ratio. For products with a rear air/flue connection: The
combustion analysis can only be carried out when the unit casing has
been removed; it is not necessary to test these products for flue gas recir-
culation
13 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
14 Disconnect the product from the electrical installation
15 Check and, if required, correct the electrical installation
16 Remove the unit casing, check the condition of all of the functional com-
ponents, in particular for leaks, corrosion, rust, etc. and, if required, repair
any damage
17 Visual inspection of the heat exchanger and burner seals
18 Carefully clean the inside of the product: The air passages to the burner
must be clear and clean
19 Close the installation's gas stopcock and, if required, service valves
20 Check the quality of the heating water: Clarity (clouding), correct inhibitor
and pH value
21 Removing the gas-air mixture unit
22 Checking the burner
23 Cleaning the heat exchanger
24 Check and, if required, replace the insulating mat in the burner area
25 Installing the gas-air mixture unit
26 Cleaning the condensate trap
27 Filling the condensate trap
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Interval
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
at regular intervals
at regular intervals
at regular intervals
at regular intervals
at regular intervals
Annually
Annually
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