Vaillant ecoTEC pure VC 146/7-2 Operating Instructions Manual page 5

1.3.5 Risk of death due
to changes to the
product or the product
environment
▶ Never remove, bridge or
block the safety devices.
▶ Do not tamper with any of the
safety devices.
▶ Do not damage or remove
any seals on components.
▶ Do not make any changes:
– The product itself
– to the gas, air, water and
electricity supplies
– to the entire flue gas install-
ation
– to the entire condensate
drain system
– to the expansion relief valve
– to the drain pipework
– to constructional condi-
tions that may affect the
operational reliability of the
product
1.3.6 Risk of poisoning
caused by insufficient
supply of combustion air
Conditions: Open-flued opera-
tion
▶ Ensure that there is a suffi-
cient supply of combustion
air.
0020258017_00 ecoTEC pure Operating instructions
1.3.7 Risk of corrosion
damage due to
unsuitable combustion
and room air
Sprays, solvents, chlorinated
cleaning agents, paint, adhes-
ives, ammonia compounds,
dust or similar substances may
lead to corrosion on the product
and in the air/flue pipe.
▶ Ensure that the supply of
combustion air is always free
of fluorine, chlorine, sulphur,
dust, etc.
▶ Ensure that no chemical sub-
stances are stored at the in-
stallation site.
1.3.8 Risk of material damage
caused by frost
▶ Ensure that the heating in-
stallation always remains in
operation during freezing con-
ditions and that all rooms are
sufficiently heated.
▶ If you cannot ensure the op-
eration, have a competent
person drain the heating in-
stallation.
Safety 1
5