Using Check Programmes; Checking And Treating The Heating Water/Filling And Supplementary Water - Vaillant ecoTEC plus Installation And Maintenance Instructions Manual

7 Start-up
Note
If additional condensing units are connected to the
same flue gas pipe in the heating installation, en-
sure that none of these condensing units are in
operation or start operating throughout the entire
test programme, so that the test result is not dis-
torted.
▶
Perform the gas family check as part of routine product
maintenance work, after replacing components, carrying
out work on the gas route and following gas conversion.
Result Meaning
F.92 See the table of
fault codes in the
appendix
"Successful" Combustion
quality is good.
Unit configur-
ation matches
the specified gas
group.
"Warning" Combustion
quality inad-
equate.
CO₂ content is
incorrect.
F.93 See the table of
fault codes in the
appendix
Note
It is not possible to perform CO₂ measure-
ments during the gas family check.
7.7

Using check programmes

Menu → Installer level → Test programs → Check pro-
grams
22
Measure
See the table of fault
codes in the appendix
None
Start check programme
P.01 and adjust the
CO₂ content with the
adjusting screw in the
Venturi.
If the correct CO₂ con-
tent cannot be set:
Check that the gas re-
strictor is correct (yellow:
G20 natural gas, blue:
G25 natural gas, grey:
Liquid gas) and undam-
aged.
Repeat the gas family
7.8
check.
See the table of fault
codes in the appendix
▶
Checking the quality of the heating water
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Installation and maintenance instructions ecoTEC plus 0020209593_01
Display Meaning
P.00 Purging check programme:
The internal pump is cyclically actuated.
The heating circuit and the hot water circuit are
purged via the automatic air vent (the cap of the
automatic air vent must be released).
1 x : Start heating circuit purging
2 x ( ): Start hot water circuit purging
3 x ( ): Restart heating circuit purging
1 x (Cancel): End purge programme
Note
The purge programme runs for 7.5 min per circuit
and then terminates.
Purging the heating circuit:
Diverter valve in heating position, actuation of in-
ternal pump for 9 cycles: 30 sec. on, 20 sec. off.
Display: Active heating circuit.
Purging the hot water circuit:
After the above-mentioned cycles have run or the
right-hand selection button has been pressed again:
Diverter valve in the hot water position, actuation
of the internal pump as above. Display: Active hot
water circuit.
P.01 Maximum load check programme:
After successful ignition, the product is operated at
maximum heat input.
P.02 Minimum load check programme:
After successful ignition, the product is operated at
minimum heat input.
P.06 Filling mode check programme:
The diverter valve is moved to the mid-position. The
burner and pump are switched off (to fill or drain the
product).
Checking and treating the heating
water/filling and supplementary water
Caution.
Risk of material damage due to poor-qual-
ity heating water
▶
Ensure that the heating water is of suffi-
cient quality.
Before filling or topping up the system, check the quality
of the heating water.
Remove a little water from the heating circuit.
Check the appearance of the heating water.
If you ascertain that it contains sedimentary materials,
you must desludge the system.
Use a magnetic rod to check whether it contains mag-
netite (iron oxide).
If you ascertain that it contains magnetite, clean the sys-
tem and apply suitable corrosion-protection measures, or
fit a magnet filter.
Check the pH value of the removed water at 25 °C.
If the value is below 8.2 or above 10.0, clean the system
and treat the heating water.