Start-Up; Filling The System; Conditioning The Heating Water - Vaillant ecoTEC exclusive 832 Installation And Maintenance Instructions Manual

6

Start-up

6 Start-up
6.1

Filling the system

6.1.1

Conditioning the heating water

b
Caution!
The use of unsuitable heating water can
cause aluminium corrosion and therefore
result in leaks!
In contrast to steel, grey cast iron or copper,
for example, aluminium reacts with alkaline
heating water (pH value > 8.5) to produce sub-
stantial corrosion.
> When using aluminium, make sure that the
pH value of the heating water is between
6.5 and a maximum of 8.5.
b
Caution!
Risk of material damage if the heating
water is treated with unsuitable frost or
corrosion protection agents!
Frost and corrosion protection agents can
cause changes in the seals, noises during
heating and possibly consequential damage.
> Do not use any unsuitable frost or corro-
sion protection agents.
Mixing additives with the heating water can result in
material damage. However no incompatibility with
Vaillant units has been detected with proper use of the
following products over a long period.
> Follow the instructions provided by the manufacturer
of the additives when using such additives.
Vaillant does not accept any liability for the compatibility
or efficiency of any additives in the rest of the heating
system
Additives for cleaning measures (subsequent flushing
required)
– Fernox F3
– Jenaqua 400
– Sentinel X 300
– Sentinel X 400
26
Additives intended to remain permanently in the sys-
tem
– Fernox F1
– Fernox F2
– Sentinel X 100
– Sentinel X 200
– Fernox Antifreeze Alphi 11
– Sentinel X 500
Additives for frost protection intended to remain per-
manently in the system
– Fernox Antifreeze Alphi 11
– Sentinel X 500
> Inform the operator of the necessary measures if you
have used these additives.
> Inform the operator about the required measures for
frost protection.
> Observe all valid national and technical regulations
when conditioning filling and supplementary water.
Provided the national regulations and technical stand-
ards do not make any greater demands, the following
applies:
> You must condition the heating water in the following
cases:
– If the entire filling and supplementary water quan-
tity during the operating life of the system exceeds
three times the nominal volume of the central
heating system
or
– If the limit values shown in the tables are not
observed.
Total heating Overall hardness at smallest boiler heating
output surface
20 l/kW
kW mol/m
No requirement or
 50
 3
 50 to  200
2
 200 to  600 1.5
 600
0.02
1) On systems with circulation water heaters and for systems
with electric heating elements
2) Of specific system volume (nominal content in litres/heating
output; in the case of multi-boiler systems, the smallest single
heating output is to be used).
These values only apply up to 3 times the system volume for
filling and supplementary water. If three times the system vol-
ume is exceeded, the water must be conditioned in accordance
with the stipulations of the VDI in the same way as if the limit
values in Tab. 6.1 are exceeded (softening, desalting, hardness
stabilisation, and sludging).
Table 6.1 Guide values for the heating water: water hardness
Installation and maintenance instructions ecoTEC exclusive 0020017768_07
2)
> 20 l/kW
< 50 l/kW
3 3
mol/m
2
1)
1.5
0.02
0.02
> 50 l/kW
3
mol/m
0.02
0.02
0.02
0.02