Appendix; A Inspection And Maintenance Work - Vaillant ecoTEC exclusive 627 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 Calibrating the heat generator and measuring the CO/CO₂ content and
gas flow in heating mode
12 Logging the CO₂ content (air ratio) and CO/CO₂ ratio
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 Checking the electrical plug connections
16 Removing dirt from the product and the vacuum chamber
17 Visually check the heat cell to ascertain its condition and detect any
leaks, corrosion, rust or damage, and carry out maintenance work, if
required
18 Check that the gas stopcock and service valves function correctly
19 Checking the quality of the heating water
20 Removing the compact thermal module
21 Checking the burner
22 Checking the insulating mats in the combustion area and replacing dam-
aged insulating mats
23 Cleaning the heat exchanger
24 Clean the condensate siphon and check the condensate discharge pipe
25 Installing the compact thermal module
26 Checking the pre-charge pressure for the internal expansion vessel
27 Reassemble the product
28 Opening the service valves
29 Filling the heating installation
30 Run the test operation on the product/heating installation including hot
water generation (if available) and, if required, purge the product/heating
installation
31 Completing inspection and maintenance work
32 Checking the gas type
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Interval
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
Annually
at regular intervals
at regular intervals
After each time maintenance
work is carried out
Annually
Annually
Annually
Annually
Annually
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