Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual page 5

the gas supply company as soon as you
are outside the building.
1.3.2 Flue gas
Flue gases may cause poisoning, while hot
flue gases may also cause burns. Flue gases
must therefore never be allowed to escape
uncontrollably.
What to do if you smell flue gas in the prop-
erty:
▶ Open all accessible doors and windows
fully to provide ventilation.
▶ Switch off the product.
▶ Check the flue gas routes in the product
and the flue gas diversions.
To prevent flue gas exit:
▶ Only operate the product if the air/flue pipe
has been completely installed.
▶ With the exception of short periods for
testing purposes, only operate the product
when the front casing is installed and
closed.
If you operate the product with an empty con-
densate trap / siphon, then flue gas may es-
cape into the room air.
▶ In order to operate the product, ensure that
the condensate trap / siphon is always full.
Condition: Permitted B23 or B23P unit types
with condensate siphon (third-party access-
ory)
– Water seal level: ≥ 200 mm
To ensure that the seals are not damaged:
▶ Instead of grease, use only water or com-
mercially available soft soap to aid installa-
tion.
1.3.3 Air supply
Unsuitable or insufficient combustion and
room air may lead to material damage, but
also to life-threatening situations.
To ensure that the combustion air supply is
sufficient during open-flued operation:
▶ Ensure that the air supply to the product's
installation room is permanently unobstruc-
ted and sufficient in accordance with the
relevant ventilation requirements. This also
applies, in particular, for cupboard installa-
tions.
0020261389_03 ecoTEC plus Installation and maintenance instructions
To prevent corrosion on the product and in
the flue system:
▶ Ensure that the combustion air supply is
free from sprays, solvents, chlorinated
cleaning agents, paint, adhesives, am-
monia compounds, dust or similar sub-
stances.
▶ Ensure that no chemical substances are
stored at the installation site.
▶ If you are installing the product in
hairdressing salons, painter's or joiner's
workshops, cleaning businesses or similar
locations, choose a separate installation
room in which the room air is technically
free of chemical substances.
Validity: Except Great Britain
▶ Ensure that the combustion air is not
routed through chimneys which have
previously been used with oil-fired floor-
standing boilers, or with other boilers,
which could cause soot to build up in the
chimney.
1.3.4 Electricity
The power supply terminals L and N remain
live.
To prevent electric shocks, proceed as fol-
lows before working on the product:
▶ Disconnect the product from the power
supply by switching off all power supplies
at all poles (electrical partition with a con-
tact gap of at least 3 mm, e.g. fuse or cir-
cuit breaker) or remove the mains plug (if
present).
▶ Secure against being switched back on
again.
▶ Wait at least three minutes until the con-
densers have discharged.
▶ Check that there is no voltage.
1.3.5 Weight
To prevent injuries when transporting the
product:
▶ Make sure that the product is transported
by at least two people.
To prevent material damage to the flexible
gas pipe:
▶ Never suspend the compact thermal
module on the flexible gas pipe.
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