F Inspection And Maintenance Work - Vaillant ecoFIT sustain 615 Installation And Maintenance Instructions Manual

F 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
Note: For products that are not part of the annual service agreement, maintenance must be carried out at least
once every five years.
# Maintenance work
1 Ask the end user whether any significant problems occur when operating
the product
2 Use the diagnostics system to check the product's fault history
3 Visually inspect whether the air/flue pipe and its opening have been in-
stalled correctly in accordance with the set-up instructions
4 Check that the unit has been installed correctly and the connections have
been secured
5 Check all of the connections for tightness
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 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
12 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
13 Disconnect the product from the electrical installation
14 Check and, if required, correct the electrical installation
15 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
16 Visual inspection of the heat exchanger and burner seals
17 Carefully clean the inside of the product: The air passages to the burner
must be clear and clean
18 Close the installation's gas stopcock and, if required, service valves
19 Check the quality of the heating water: Clarity (clouding), correct inhibitor
and pH value
20 Checking the admission pressure of the expansion vessel
21 Removing the gas-air mixture unit
22 Checking the burner
23 Cleaning the condensate trap
24 Filling the condensate trap
25 Cleaning the heat exchanger
0020277252_00 ecoFIT sustain Installation and maintenance instructions
Appendix
Interval
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
Annually
If required, at least every
5 years
If required, at least every
5 years
If required, at least every
5 years
Annually
Annually
If required, at least every
5 years
27
25
26
26
17
26
37