Vaillant ecoTEC plus VU Series Installation And Maintenance Instructions Manual page 4

▶ Do not use any electrical switches, mains
plugs, doorbells, telephones or other com-
munication systems in the building.
▶ Close the emergency control valve or the
main isolator.
▶ If possible, close the gas stopcock on the
product.
▶ Warn other occupants in the building by
yelling or banging on doors or walls.
▶ Leave the building immediately and ensure
that others do not enter the building.
▶ Notify the gas supply company or
the Emergency Service Provider
+44 (0) 800 111999 by telephone once you
are outside of 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
condensate trap / siphon, then flue gas
may escape into the room air.
▶ In order to operate the product, ensure that
the condensate trap / siphon is always full.
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 Electricity
The power supply terminals L and N remain
live even if the unit main switch is switched
off.
4
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.
1.3.4 Weight
To prevent injuries when transporting the
product:
▶ Make sure that the product is transported
by at least two people.
1.3.5 Explosive and flammable substances
To prevent explosions and fire:
▶ Do not use the product in storage rooms
that contain explosive or flammable sub-
stances (such as petrol, paper or paint).
1.3.6 High temperatures
To prevent burns:
▶ Only carry out work on components once
they have cooled down.
To prevent material damage that is caused
by heat transfer:
▶ Only solder connectors if the connectors
are not yet screwed to the service valves.
1.3.7 Heating water
Both unsuitable heating water and air in the
heating water may cause material damage to
the product and in the heat generator circuit.
▶ Check the quality of the heating water.
(→ Page 26)
▶ If you use non-diffusion-tight plastic pipes
in the heating installation, ensure that no
air gets into the heat generator circuit.
1.3.8 Neutralisation device
To prevent contamination of the waste water:
▶ Check whether a neutralising unit must
be installed in accordance with national
regulations.
Installation and maintenance instructions ecoTEC plus 0020238195_07