Using Check Programmes; Checking And Treating The Heating Water/Filling And Supplementary Water - Vaillant ecoTEC exclusive 843 Installation And Maintenance Instructions Manual

7 Start-up
7.6

Using check programmes

Menu → Installer level → Test programs → Check pro-
grams
Display Meaning
P.00 Purging check programme:
The internal pump is cyclically actuated.
The heating circuit and hot water circuit are purged
adaptively by automatically switching the circuits via
the automatic air vent (the cap for the automatic air
vent is loosened at the factory). Hot water circuit
active or Heating circuit active display.
1 x : Start purging
1 x (Cancel): End purge programme
Note
The duration of the purge programme is displayed by
a countdown timer. The programme then ends.
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.04 Reset eGas CH (Central Heating) check programme:
Calling up the programme deletes all of the CH cor-
rection values that have been saved from previous
calibration processes. The products then starts by
fully calibrating the combustion regulation (status
S.09).
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).
P.14 Reset eGas DHW (Domestic Hot Water) check
programme:
Calling up the programme deletes all of the DHW
correction values that have been saved from previ-
ous calibration processes. The products then starts
by fully calibrating the combustion regulation (status
S.19).
7.7 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 installation, check the
quality of the heating water.
Checking 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 installation.
▶
Use a magnetic rod to check whether it contains mag-
netite (iron oxide).
▶
If you ascertain that it contains magnetite, clean the in-
stallation and apply suitable corrosion-protection meas-
ures, or fit a magnetic filter.
18
▶
Check the pH value of the removed water at 25 °C.
▶
If the value is below 8.2 or above 10.0, clean the installa-
tion and treat the heating water.
▶
Ensure that oxygen cannot get into the heating water.
Checking the filling and supplementary water
▶
Before filling the installation, measure the hardness of the
filling and supplementary water.
Treating the filling and supplementary water
▶
Observe all applicable national regulations and technical
standards when treating the filling and supplementary
water.
Provided the national regulations and technical standards
do not stipulate more stringent requirements, the following
applies:
You must treat the heating water in the following cases:
–
If the entire filling and supplementary water quantity dur-
ing the operating life of the system exceeds three times
the nominal volume of the heating installation, or
–
If the guideline values listed in the following table are not
met, or
–
If the pH value of the heating water is less than 8.2 or
more than 10.0.
Total
Water hardness at specific system volume
heating
output ≤ 20 l/kW
ppm
kW
CaCO₃
< 50 < 300 < 3
> 50 200 2
to ≤ 200
> 200 150 1.5
to ≤ 600
> 600 2 0.02
1) Nominal capacity in litres/heating output; in the case of multi-
boiler systems, the smallest single heating output is to be used.
Caution.
Risk of material damage if the heating
water is treated with unsuitable additives.
Unsuitable additives may cause changes in
the components, noises in heating mode and
possibly subsequent damage.
▶
Do not use any unsuitable frost and cor-
rosion protection agents, biocides or seal-
ants.
No incompatibility with our products has been detected to
date with proper use of the following additives.
▶
When using additives, follow the manufacturer's instruc-
tions without exception.
We accept no liability for the compatibility of any additive or
its effectiveness in the rest of the heating system.
Additives for cleaning measures (subsequent
flushing required)
–
Adey MC3+
–
Adey MC5
Installation and maintenance instructions ecoTEC exclusive 0020193968_03
> 20 l/kW
> 50 l/kW
≤ 50 l/kW
mol/ ppm mol/ ppm
m³ CaCO₃ m³ CaCO₃
200 2 2
150 1.5 2
2 0.02 2
2 0.02 2
1)
mol/
m³
0.02
0.02
0.02
0.02