Vaillant ECOTEC PLUS VU 80, Installation And Maintenance Instructions Manual

Page: 9 / 76

ecoTEC plus installation and maintenance instructions 0020134823_01
9
a
Safety
a
2
b
Caution.
Risk of material damage if the heating
water is treated with unsuitable frost or
corrosion protection agents!
Frost and corrosion protection agents may
cause changes in the seals, noises during
heating and may lead to further damage.
>
Do not use any unsuitable frost or corro-
sion protection agents.
Mixing additives with the heating water may result in mate-
rial damage. However, no incompatibility with Vaillant boil-
ers has been detected with proper use of the following
products over a long period.
>
When using additives, follow the manufacturer's instruc-
tions without exception.
Vaillant accepts no liability for the compatibility of any addi-
tive or its effectiveness in the rest of the heating installa-
tion.
Additives for cleaning measures (subsequent
flushing required)
– Fernox F3
– Sentinel X 300
– Sentinel X 400
Additives intended to remain permanently in the
system
– Fernox F1
– Fernox F2
– Sentinel X 100
– Sentinel X 200
Additives for frost protection intended to remain
permanently in the system
– Fernox Antifreeze Alphi 11
– Sentinel X 500
>
Inform the operator about the measures required if you
have used these additives.
>
Inform the operator about the measures required for
frost protection.
Permissible salt content
Heating water
characteristics Unit Low-salt Saline
Electrical conductivity at
25 °C
m
S/cm
<
100 100 - 1500
Appearance
Free of sedimentary
materials
pH value at 25 °C 8.2 - 10.0
1)
8.2 - 10.0
1)
Oxygen mg/l
<
0.1
<
0.02
1) For aluminium and aluminium alloys, the pH value range is
restricted from 6.5 to 8.5.
2.2 Guideline values for heating water: Salt content
Permissible water hardness
b
Caution.
Heating water that is extremely calcifer-
ous or corrosive or contaminated by
chemicals may cause damage to the
boiler.
Unsuitable heating water damages the
seals and diaphragms, blocks components
in the boiler and heating installation
through which the water flows, and causes
noise.
The heating water must fulfil the limit val-
ues based on the system volume in accord-
ance with
fig. 2.1 and, if required, must be
treated.
In addition, the national regulations with
regard to water treatment shall apply.
To treat the water, we recommend treat-
ment plants that work according to the
reverse osmosis process.
>
Condition the water for the initial filling
as well as the water for any subsequent
fillings.