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8.2
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-inhibition meas-
ures (e.g. fit a magnetite separator).
▶
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
rules when treating the filling and supplementary water.
Provided the national regulations and technical rules do not
stipulate more stringent requirements, the following applies:
You must treat the filling and supplementary 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 pH value of the heating water is lower than 8.2 or
higher than 10.0, or
–
The guideline values listed in the following table are not
met.
Validity: France OR Italy
Total
Water hardness at specific system volume
heat out-
put
≤ 20 l/kW
mol/
kW
°fH
m³
≤ 30
≤ 3
< 50
≤ 20
≤ 2
> 50
to ≤ 200
≤ 15
≤ 1.5
> 200
to ≤ 600
> 600
< 0.5
< 0.05
1) Nominal capacity in litres/heat output; in the case of multi-
boiler systems, the smallest single heat output is to be used.
224
1)
> 20 l/kW
> 40 l/kW
≤ 40 l/kW
°fH
mol/m³
°fH
mol/m³
≤ 15
≤ 1.5
< 0.5 < 0.05
≤ 10
≤ 1.0
< 0.5 < 0.05
< 0.5
< 0.05
< 0.5 < 0.05
< 0.5
< 0.05
< 0.5 < 0.05
Validity: France OR Italy
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 antifreeze and
corrosion inhibitors, biocides or sealants.
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)
–
Fernox F3
–
Sentinel X 300
–
Sentinel X 400
Additives intended to remain permanently in the
installation
–
Fernox F1
–
Fernox F2
–
Sentinel X 100
–
Sentinel X 200
Additives for frost protection intended to remain
permanently in the installation
–
Fernox Antifreeze Alphi 11
–
Sentinel X 500
▶
If you have used the above-mentioned additives, inform
the end user about the measures that are required.
▶
Inform the end user about the measures required for frost
protection.
8.3
Filling and purging the heating installation
1.
Flush the heating installation thoroughly prior to filling.
2.
Open all of the thermostatic valves on the heating in-
stallation and, if required, all other isolation valves.
3.
Check all of the connections and the entire heating
installation for leaks.
Installation and maintenance instructions 8000017440_FT
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