Cleanser And Inhibitor - Vaillant ecoTEC plus Instructions For Installation And Servicing

3 General requirements
3.15

Cleanser and inhibitor

In the case of an existing installation, it is essential that
prior to installing the new boiler the system is thorough-
ly flushed. For optimum performance after installation
of a new system, the boiler and its associated central
heating system should also be flushed. Flushing should
be carried out in accordance with BS7593: 1992 using
a cleanser. For long-term corrosion protection, after
flushing, an inhibitor suitable for stainless steel heat
exchangers should be used, refer to the current issue of
BS 5449 and BS 7593 on the use of inhibitors in central
heating systems.
a Caution!
It is essential that the cleanser is fully
removed from the system after flushing and
before adding inhibitor. Take care to ensure
that all low points in the system are fully drained.
Mixing additives with the heating water can result in ma-
terial damage. However, up to now, no incompatibility
with Vaillant appliances has been detected with proper
use of the following products.
• When using additives, follow the additive manufactur-
er's instructions without exception.
Vaillant accepts no liability for the compatibility of any
additive or its effectiveness in the entire heating sys-
tem.
Additives for cleaning purposes
(subsequent flushing required)
- Fernox F3
- Jenaqua 400
- Sentinel X 300
- Sentinel X 400
Total heating Total hardness at 20 l/kW
output for the smallest boiler heating
surface
kW mol/m
< 50 No requirement or < 3
> 50 to ≤ 200
2
> 200 to ≤ 600
1,5
> 600
0,02
1) with systems equipped with wall-hung boiler and systems with electric heating elements
2) of the specific system volume (nominal capacity in litres/heating output; in case of multiple boiler systems the lowest individual
heating output should be used)
These data only apply up to 3x the system volume for filling and top-up water. Once this triple system volume is exceeded, the
water will have to be treated exactly the same as in case of exceeding the limit values given in table 3.3 (softening, desalination,
hardness stabilisation and desludging).
Table 3.2 Guidelines for the heating water: Water hardness
14
2)
3
1)
Additives intended to remain permanently in the sys-
tem
- Fernox F1
- Fernox F2
- Sentinel X 100
- Sentinel X 200
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 in
case you have used any of these additives.
• Inform the operator of the required procedures for
frost protection.
• Observe the applicable national regulations and tech-
nical standards for the treatment of filling and top-up
water.
Provided the national regulations and technical stand-
ards do not specify any higher requirements, the follow-
ing applies:
• You must treat the heating water
- if the total volume of filling and top-up water ex-
ceeds thrice the nominal volume of the heating sys-
tem over the service life of the system
or
- if the limits given in the following tables are not ad-
hered to.
Total hardness at > 20 l/kW
< 50 l/kW for the smallest boiler
2)
heating surface
mol/m3
2
1,5
0,02
0,02
Instructions for installation and servicing ecoTEC plus 0020020828_07
Total hardness at > 50 l/kW
for the smallest boiler heating
2)
surface
3
mol/m
0,02
0,02
0,02
0,02